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316 Commits

Author SHA1 Message Date
Michael Eischer
ae7e51382a Fix error on temp file deletion on windows 
Apparently it can take a moment between closing a tempfile marked as
DELETE_ON_CLOSE and it actually being deleted. During that time the file
is inaccessible. Thus just skip deleting the temp file on windows.
 2022-05-09 22:43:26 +02:00
Michael Eischer
cf5cb673fb repository: Use existing method to collect pack ids 2022-04-30 19:14:21 +02:00
Michael Eischer
b335cb6285 repository: Refactor index IDs collection 2022-04-30 19:14:21 +02:00
Michael Eischer
4b01b06f2f repository: Test compressed blobs in StreamPack 2022-04-30 11:34:10 +02:00
Michael Eischer
ec2b25565a repository: test uncompressedLength field and index example 2022-04-30 11:34:10 +02:00
Michael Eischer
9ffb8920f1 repository: run blackbox tests using old and new repo version 2022-04-30 11:34:10 +02:00
Michael Eischer
abe5935693 repository: unify repository version-specific initialization 
Mark the master index as compressed also when initializing a new
repository. This is only relevant for testing.
 2022-04-30 11:34:10 +02:00
Alexander Neumann
8776031f96 Leave allocating slices to the decompress code 2022-04-30 11:34:10 +02:00
Alexander Neumann
5eb05a0afe Configure zstd encoder/decoder 2022-04-30 11:34:10 +02:00
Michael Eischer
2f36e044db Cleanup pack header check 2022-04-30 11:34:10 +02:00
Alexander Neumann
8b11b86383 Add option global --compression 2022-04-30 11:34:10 +02:00
Michael Eischer
7132df529e repository: Increase index size for repo version 2 
A compressed index is only about one third the size of an uncompressed
one. Thus increase the number of entries in an index to avoid cluttering
the repository with small indexes.
 2022-04-30 11:34:10 +02:00
Michael Eischer
66f9048bce repository: Alloc zstd encoder/decoder on demand 2022-04-30 11:34:10 +02:00
Michael Eischer
fd05037e1a repository: recalibrate index batch allocation size 2022-04-30 11:34:10 +02:00
Michael Eischer
6fb408d90e repository: implement pack compression 2022-04-30 11:34:10 +02:00
Michael Eischer
362ab06023 init: Add flag to specify created repository version 2022-04-30 10:07:42 +02:00
Michael Eischer
4b957e7373 repository: Implement index/snapshot/lock compression 
The config file is not compressed as it should remain readable by older
restic versions such that these can return a proper error.

As the old format for unpacked data does not include a version header,
make use of a trick: The old data is always encoded as JSON. Thus it can
only start with '{' or '['. For any other value the first byte indicates
a versioned format. The version is set to 2 for now. Then the zstd
compressed data follows.
 2022-04-30 10:07:42 +02:00
Michael Eischer
e597b99b55 repository: Reduce repack workers to prevent deadlock 
As repack streams packs these occupy one backend connection. Uploading a
new pack also requires a backend connection. To prevent a deadlock
during repack when reaching the backend connections limit, simply limit
the repackWorker count to always leave one connection for uploading.
 2022-04-23 11:28:18 +02:00
Alexander Neumann
a059ef90f8
Merge pull request #3702 from MichaelEischer/extend-config-error 
Print used key name if config fails to load
 2022-04-10 20:25:24 +02:00
Michael Eischer
c2aabb2686 Print used key name if config fails to load 2022-04-09 22:38:18 +02:00
Alexander Neumann
04e054465a
Merge pull request #3475 from MichaelEischer/local-sftp-conn-limit 
Limit concurrent operations for local / sftp backend
 2022-04-09 21:33:00 +02:00
Michael Eischer
7b9ae91e04 copy: Load snapshots before indexes 2022-04-09 12:27:25 +02:00
Michael Eischer
cd783358d3 local: Limit concurrent backend operations 
Use a limit of 2 similar to the filereader concurrency in the archiver.
 2022-04-09 12:21:38 +02:00
Michael Eischer
6408686973 repository: Simplify Blob equality check 2022-03-28 22:09:49 +02:00
Michael Eischer
243698680a crypto: Use helpers for size calculations 2022-03-28 22:09:49 +02:00
Michael Eischer
f78bd14e28 repository: Remove pack implementation details from MasterIndex 2022-03-28 22:09:49 +02:00
Michael Eischer
dc3d77dacc repository: make saveAndEncrypt private 2022-03-28 22:09:49 +02:00
Michael Eischer
6877e7edbb repository: Rename LoadAndDecrypt to LoadUnpacked 
The method is the complement for SaveUnpacked and not for
SaveAndEncrypt. The latter assembles blobs into pack files.
 2022-03-28 22:09:49 +02:00
Michael Eischer
537b4c310a copy: Implement by reusing repack 
The repack operation copies all selected blobs from a set of pack files
into new pack files. For prune the source and destination repositories
are identical. To implement copy, just use a different source and
destination repository.
 2022-03-26 20:47:15 +01:00
Alexander Neumann
e682f7c0d6 Add tests for StreamPack 2022-03-21 21:15:03 +01:00
Michael Eischer
bba8ba7a5b repository: cancel streampack context after error 2022-02-12 20:18:25 +01:00
Michael Eischer
47554a3428 repository: Fix error handling in repack 
When storing a blob fails, this is a fatal error which must not be
retried.
 2022-02-12 20:18:25 +01:00
Michael Eischer
930a00ad54 checker: reuse bufio reader 2022-02-12 20:18:25 +01:00
Michael Eischer
34ebafb8b6 repository: don't crash if blob size is too short 2022-02-12 20:18:25 +01:00
Michael Eischer
becebf5d88 repository: remove unused DownloadAndHash 2022-02-12 20:18:25 +01:00
Michael Eischer
f1e58e7c7f checker: rewrite ReadData to stream packs 2022-02-12 20:18:25 +01:00
Michael Eischer
f40abd92fa restorer: convert to use StreamPack 2022-02-12 20:18:25 +01:00
Michael Eischer
f00f690658 repository: stream packs during repacking 2022-02-12 20:18:25 +01:00
Michael Eischer
c4a2bfcb39 repository: Add StreamPacks function 
The function supports efficiently loading a specified list of blobs from
a single pack in a streaming fashion. That is there's no need for
temporary files independent of the pack size.
 2022-02-12 20:18:25 +01:00
Michael Eischer
153e2ba859 repository: Implement lisiting blobs per pack file 2022-02-12 20:18:24 +01:00
greatroar
8d2996eaaa Replace siphash by hash/maphash 
In Go 1.17.1, maphash has become quite a bit faster than siphash, so we
can drop one third-party dependency. maphash is just an interface to the
standard Go map's hash function, which we already trust for other use
cases.

Benchmark results on linux/amd64, -benchtime=3s:

name                                             old time/op    new time/op    delta
IndexHasUnknown-8                                  50.6ns ±10%    41.0ns ±19%  -18.92%  (p=0.000 n=9+10)
IndexHasKnown-8                                    52.6ns ±12%    41.5ns ±12%  -21.13%  (p=0.000 n=9+10)
IndexMapHash-8                                     3.64µs ± 1%    2.00µs ± 0%  -45.09%  (p=0.000 n=10+9)
IndexAlloc-8                                        700ms ± 1%     601ms ± 6%  -14.18%  (p=0.000 n=8+10)
IndexAllocParallel-8                                205ms ± 5%     192ms ± 8%   -6.18%  (p=0.043 n=10+10)
MasterIndexAlloc-8                                  319ms ± 1%     279ms ± 5%  -12.58%  (p=0.000 n=10+10)
MasterIndexLookupSingleIndex-8                      156ns ± 8%     147ns ± 6%   -5.46%  (p=0.023 n=10+10)
MasterIndexLookupMultipleIndex-8                    150ns ± 7%     142ns ± 8%   -5.69%  (p=0.007 n=10+10)
MasterIndexLookupSingleIndexUnknown-8              74.4ns ± 6%    72.0ns ± 9%     ~     (p=0.175 n=10+9)
MasterIndexLookupMultipleIndexUnknown-8            67.4ns ± 9%    65.5ns ± 7%     ~     (p=0.340 n=9+9)
MasterIndexLookupParallel/known,indices=25-8        461ns ± 2%     445ns ± 2%   -3.49%  (p=0.000 n=10+10)
MasterIndexLookupParallel/unknown,indices=25-8      408ns ±11%     378ns ± 5%   -7.22%  (p=0.035 n=10+9)
MasterIndexLookupParallel/known,indices=50-8        479ns ± 1%     437ns ± 4%   -8.82%  (p=0.000 n=10+10)
MasterIndexLookupParallel/unknown,indices=50-8      406ns ± 8%     343ns ±15%  -15.44%  (p=0.001 n=10+10)
MasterIndexLookupParallel/known,indices=100-8       480ns ± 1%     455ns ± 5%   -5.15%  (p=0.000 n=8+10)
MasterIndexLookupParallel/unknown,indices=100-8     391ns ±18%     382ns ± 8%     ~     (p=0.315 n=10+10)
MasterIndexLookupBlobSize-8                        71.0ns ± 8%    57.2ns ±11%  -19.36%  (p=0.000 n=9+10)
PackerManager-8                                     254ms ± 1%     254ms ± 1%     ~     (p=0.285 n=15+15)

name                                             old speed      new speed      delta
IndexMapHash-8                                   1.12GB/s ± 1%  2.05GB/s ± 0%  +82.13%  (p=0.000 n=10+9)
PackerManager-8                                   208MB/s ± 1%   207MB/s ± 1%     ~     (p=0.281 n=15+15)

name                                             old alloc/op   new alloc/op   delta
IndexMapHash-8                                      0.00B          0.00B          ~     (all equal)
IndexAlloc-8                                        400MB ± 0%     400MB ± 0%     ~     (p=1.000 n=9+10)
IndexAllocParallel-8                                401MB ± 0%     401MB ± 0%   +0.00%  (p=0.000 n=10+10)
MasterIndexAlloc-8                                  258MB ± 0%     262MB ± 0%   +1.42%  (p=0.000 n=9+10)
PackerManager-8                                    73.1kB ± 0%    73.1kB ± 0%     ~     (p=0.382 n=13+13)

name                                             old allocs/op  new allocs/op  delta
IndexMapHash-8                                       0.00           0.00          ~     (all equal)
IndexAlloc-8                                         907k ± 0%      907k ± 0%   -0.00%  (p=0.000 n=10+10)
IndexAllocParallel-8                                 907k ± 0%      907k ± 0%   +0.00%  (p=0.009 n=10+10)
MasterIndexAlloc-8                                   327k ± 0%      317k ± 0%   -3.06%  (p=0.000 n=10+10)
PackerManager-8                                       744 ± 0%       744 ± 0%     ~     (all equal)
 2021-09-19 16:05:18 +02:00
Alexander Weiss
81876d5c1b Simplify cache logic 2021-09-03 21:01:00 +02:00
Michael Eischer
9aa2eff384 Add plumbing to calculate backend specific file hash for upload 
This enables the backends to request the calculation of a
backend-specific hash. For the currently supported backends this will
always be MD5. The hash calculation happens as early as possible, for
pack files this is during assembly of the pack file. That way the hash
would even capture corruptions of the temporary pack file on disk.
 2021-08-04 22:17:46 +02:00
Ryan Hitchman
77bf148460 backup: add --dry-run/-n flag to show what would happen. 
This can be used to check how large a backup is or validate exclusions.
It does not actually write any data to the underlying backend. This is
implemented as a simple overlay backend that accepts writes without
forwarding them, passes through reads, and generally does the minimal
necessary to pretend that progress is actually happening.

Fixes #1542

Example usage:

$ restic -vv --dry-run . | grep add
new       /changelog/unreleased/issue-1542, saved in 0.000s (350 B added)
modified  /cmd/restic/cmd_backup.go, saved in 0.000s (16.543 KiB added)
modified  /cmd/restic/global.go, saved in 0.000s (0 B added)
new       /internal/backend/dry/dry_backend_test.go, saved in 0.000s (3.866 KiB added)
new       /internal/backend/dry/dry_backend.go, saved in 0.000s (3.744 KiB added)
modified  /internal/backend/test/tests.go, saved in 0.000s (0 B added)
modified  /internal/repository/repository.go, saved in 0.000s (20.707 KiB added)
modified  /internal/ui/backup.go, saved in 0.000s (9.110 KiB added)
modified  /internal/ui/jsonstatus/status.go, saved in 0.001s (11.055 KiB added)
modified  /restic, saved in 0.131s (25.542 MiB added)
Would add to the repo: 25.892 MiB
 2021-08-04 21:19:29 +02:00
Alexander Neumann
aef3658a5f Address review comments 2021-01-30 20:02:37 +01:00
Alexander Neumann
16313bfcc9 errcheck: Add error check for MergeFinalIndexes() 2021-01-30 20:02:37 +01:00
Alexander Neumann
75f53955ee errcheck: Add error checks 
Most added checks are straight forward.
 2021-01-30 20:02:37 +01:00
Alexander Neumann
bdfedf1f5b
Merge pull request #3173 from MichaelEischer/unify-index-loading 
Unify index loading
 2021-01-28 13:50:42 +01:00
Michael Eischer
e2b0072441 check: add progress bar to the tree structure check 2021-01-28 11:10:50 +01:00
Michael Eischer
de99207046 repository: tweak comment for packs method 2020-12-22 23:01:58 +01:00
Alexander Weiss
68b74e359e Count packs directly in RebuildIndexFiles 2020-12-22 23:01:58 +01:00
Michael Eischer
b9f5d3fe13 repository: Add test for ForAllIndexes 2020-12-22 22:36:18 +01:00
Michael Eischer
a12c5f1d37 repository: move otherwise unused LoadIndex to tests 2020-12-22 22:36:18 +01:00
Michael Eischer
24474a36f4 repository: deduplicate index loading implementation 2020-12-22 22:36:18 +01:00
Michael Eischer
96904f8972 check: extract parallel index loading 2020-12-22 22:36:18 +01:00
Alexander Neumann
36c5d39c2c Fix issues reported by semgrep 2020-12-11 09:41:59 +01:00
Alexander Neumann
7facc8ccc1
Merge pull request #2505 from aawsome/fix-repo-configfile 
Fix repo configfile
 2020-12-07 07:52:37 +01:00
Alexander Weiss
aa7a5f19c2 Use BlobHandle in index methods 2020-11-22 20:41:12 +01:00
Alexander Weiss
e3013271a6 Harmonize naming 2020-11-22 20:41:12 +01:00
Alexander Weiss
92bd448691 Make BlobHandle substruct of Blob 2020-11-22 20:41:10 +01:00
Alexander Weiss
ce5d630681 Add MasterIndex.PackSize() 2020-11-21 22:13:54 +01:00
Alexander Weiss
c3ddde9e7d Return hdrSize in ListPack 2020-11-21 22:13:54 +01:00
Michael Eischer
1f43cac12d check: Only track data blobs when unused blobs should be reported 
This improves the memory usage of check a lot as it now only has to
track tree blobs when run using the default parameters.
 2020-11-15 18:43:07 +01:00
Alexander Neumann
3c0c0c132b
Merge pull request #3006 from aawsome/new-rebuild-index 
Reimplement rebuild-index and remove /internal/index
 2020-11-15 17:48:43 +01:00
greatroar
ab2b7d7f9a Decrease allocation rate in internal/pack 
internal/repository benchmark results:

name             old time/op    new time/op    delta
PackerManager-8     179ms ± 1%     181ms ± 1%   +0.78%  (p=0.009 n=10+10)

name             old speed      new speed      delta
PackerManager-8   294MB/s ± 1%   292MB/s ± 1%   -0.77%  (p=0.009 n=10+10)

name             old alloc/op   new alloc/op   delta
PackerManager-8    91.3kB ± 0%    72.2kB ± 0%  -20.92%  (p=0.000 n=9+7)

name             old allocs/op  new allocs/op  delta
PackerManager-8     1.38k ± 0%     0.76k ± 0%  -45.20%  (p=0.000 n=10+7)
 2020-11-15 16:51:47 +01:00
Alexander Weiss
30b6a0878a Reimplement rebuild-index 2020-11-15 07:05:09 +01:00
Alexander Weiss
187c8fb259 Parallelize MasterIndex.Save() 2020-11-15 07:05:09 +01:00
Alexander Weiss
1ec628ddf5 Add extraObsolete to MasterIndex.Save 2020-11-15 07:05:09 +01:00
Alexander Weiss
5898cb341f Use CreateIndexFromPacks() in test 2020-11-15 07:05:05 +01:00
Alexander Weiss
43732bb885 Add CreateIndexFromPacks() 2020-11-15 07:04:51 +01:00
greatroar
21b787a4d1 Stop Counters where they're constructed and started 2020-11-09 13:03:31 +01:00
greatroar
ddca699cd2 Replace restic.Progress with new progress.Counter 
This fixes two race conditions while cleaning up the code.
 2020-11-09 12:12:35 +01:00
Alexander Weiss
fd33030556 Use in-memory index to rebuild index in prune 2020-11-06 20:23:30 +01:00
Alexander Weiss
38cc4393f6 Add Masterindex.Save(); Add Index.Packs() 2020-11-06 20:23:30 +01:00
Alexander Weiss
aaf1c44362 Fix #3062 2020-11-05 17:05:42 +01:00
Alexander Neumann
ae5302c7a8 Add comment that keepBlobs is modified 2020-11-05 10:33:38 +01:00
Alexander Neumann
866a52ad4e Remove unneeded seek 
The file returned from DownloadAndHash() is already seeked to the start
of the file.
 2020-11-05 10:31:49 +01:00
Alexander Neumann
a4507610a0 Fix typo 2020-11-05 10:31:49 +01:00
Alexander Neumann
7def2d8ea7 Use a non-constant seed 2020-11-05 10:31:49 +01:00
Alexander Neumann
ee0112ab3b Clarify message about expected error 2020-11-05 10:31:49 +01:00
Michael Eischer
b373f164fe prune: Parallelize repack command 2020-11-05 10:31:49 +01:00
Alexander Neumann
3ff37215df
Merge pull request #2935 from MichaelEischer/upgrade-minio 
Upgrade minio SDK to version 7
 2020-11-02 09:09:10 +01:00
Sergio Rubio
e708628cfd
Remove unused function 
Not currently used, and it'd need to be added to the MasterIndex interface first.
 2020-10-28 13:24:49 +01:00
Alexander Weiss
b44ecde8b0 Fix setting of ID in DecodeIndex 2020-10-17 09:12:58 +02:00
MichaelEischer
4ba237bb93
Merge pull request #3019 from greatroar/refactor-decodeindex 
Refactor index decoding
 2020-10-15 23:22:33 +02:00
greatroar
b27375f5ce defer close(ch) outside repository.RunWorkers 2020-10-14 15:50:16 +02:00
greatroar
720e0ee0c7 if cond { return true }; return false => return cond 2020-10-13 20:56:43 +02:00
greatroar
27db3ec262 Refactor index decoding 
Decoding old-format indices no longer requires loading and decrypting
twice.
 2020-10-13 20:47:50 +02:00
Alexander Neumann
56883817d8
Merge pull request #2990 from MichaelEischer/fix-goreport-warnings 
Fix some goreport warnings
 2020-10-12 20:44:56 +02:00
Michael Eischer
e638b46a13 Embed context into ReaderAt 
The io.Reader interface does not support contexts, such that it is
necessary to embed the context into the backendReaderAt struct. This has
the problem that a reader might suddenly stop working when it's
contained context is canceled. However, this is now problem here as the
reader instances never escape the calling function.
 2020-10-09 22:39:07 +02:00
Michael Eischer
d6cfe857b7 pass proper context into MasterIndex.RebuildIndex 2020-10-09 22:39:07 +02:00
Michael Eischer
a449450021 init: pass proper context to master key generation 
This is no change in behavior as a canceled context did later on cause
the config file creation to fail. Therefore this change just lets the
repository initialization fail a bit earlier.
 2020-10-09 22:37:56 +02:00
Michael Eischer
c458e114d4 pass context to Find / FindSnapshot 
This allows proper interruption of restic while it searches for
snapshots or key files.
 2020-10-09 22:37:56 +02:00
Michael Eischer
45e9a55c62 Wire context into backend layout detection 2020-10-09 22:37:24 +02:00
Michael Eischer
eba5dd831f Fix typos reported by misspell 2020-10-06 14:55:13 +02:00
Michael Eischer
f003410402 init: Add --copy-chunker-params option 
This allows creating multiple repositories with identical chunker
parameters which is required for working deduplication when copying
snapshots between different repositories.
 2020-09-19 16:53:05 +02:00
greatroar
23fcbb275a Remove restic.Cache interface 
It was used in one code path, which then asserted its concrete type as
*cache.Cache.

Privatised some of the interface methods.
 2020-09-18 10:48:13 +02:00
Michael Eischer
c46edcd9d6 error strings should not end with punctuation 2020-09-05 10:07:17 +02:00
Michael Eischer
d0329cf3eb Adjust comments to match name of exported methods 2020-09-05 10:07:16 +02:00
Michael Eischer
4784540f04 repository: Simplify worker group code 2020-09-05 10:07:16 +02:00
Michael Eischer
d9a80e07b9 repository: Simplify index age calculation 2020-09-05 10:07:16 +02:00
Michael Eischer
2f8335554c Remove a few unused variables 2020-09-05 10:06:23 +02:00
Michael Eischer
f4b9544ab2 prune: Add test that repack aborts on wrong blob 2020-08-16 11:34:01 +02:00
Michael Eischer
367449dede prune: Reduce memory allocations while repacking 
The slicing operator `slice[low:high]` default to 0 for the lower bound and
len(slice) for the upper bound when either or both are not specified.
Fix the code to use `cap(slice)` to check for the slice capacity.
 2020-08-16 11:34:01 +02:00
Michael Eischer
7042bafea5 prune: Abort repacking when a pack contains a wrong blob 
If a blob in a pack file can be decrypted successfully but contains data
that results in a different hash than stated in the header pack, then
abort repacking. As both the pack header and the blob are
cryptographically verified this either means than a malicious entity
tampered with the backup or indicates hardware problems on the client.
prune should fail with an error in both cases.
 2020-08-16 11:34:01 +02:00
aawsome
0fed6a8dfc
Use "pack file" instead of "data file" (#2885) 
- changed variable names, especially changed DataFile into PackFile
- changed in some comments
- always use "pack file" in docu
 2020-08-16 11:16:38 +02:00
MichaelEischer
eca0f0ad24
Merge pull request #2863 from aawsome/index-no-duplicates 
Don't save exact duplicates in merged index
 2020-08-08 18:24:14 +02:00
Alexander Weiss
b112533812 Don't save exact duplicates when merging indexes 2020-08-05 06:32:02 +02:00
Alexander Weiss
5e63294355 Add benchmark MasterIndexAlloc 2020-08-05 06:32:02 +02:00
Michael Eischer
05116e4787 prune: Cleanup progress bar handling while repacking 2020-08-03 19:32:46 +02:00
Alexander Neumann
2580eef2aa
Merge pull request #2318 from classmarkets/2175-named-keys 
Allow specifying user and host when adding keys
 2020-08-01 13:06:31 +02:00
Michael Eischer
c847aace35 Rename Index interface to MasterIndex 
The interface is now only implemented by repository.MasterIndex.
 2020-07-25 21:19:46 +02:00
Alexander Weiss
9d1fb94c6c make Lookup() return all blobs 
+ simplify syntax
 2020-07-25 21:18:34 +02:00
greatroar
309598c237 Simplify sortCachedPacksFirst test in internal/repository 
The test now uses the fact that the sort is stable. It's not guaranteed
to be, but the test is cleaner and more exhaustive. sortCachedPacksFirst
no longer needs a return value.
 2020-07-25 12:12:59 +02:00
greatroar
03d23e6faa Speed up blob sorting in internal/repository 
name                    old time/op    new time/op    delta
SortCachedPacksFirst-8     208µs ± 3%     186µs ± 3%  -10.74%  (p=0.000 n=10+8)

name                    old alloc/op   new alloc/op   delta
SortCachedPacksFirst-8     213kB ± 0%     139kB ± 0%  -34.62%  (p=0.000 n=10+10)

name                    old allocs/op  new allocs/op  delta
SortCachedPacksFirst-8     1.03k ± 0%     1.03k ± 0%   -0.19%  (p=0.000 n=10+10)
 2020-07-25 12:12:59 +02:00
greatroar
b10acd2af7 Test and benchmark blob sorting in internal/repository 2020-07-25 12:12:58 +02:00
Alexander Weiss
a666a6d576 Add tests and merge indexes in index benchmarks 2020-07-22 21:54:02 +02:00
Alexander Weiss
e388d962a5 Merge final indexes together for faster index access 2020-07-22 21:54:02 +02:00
Alexander Weiss
3b7a3711e6 Add more realistic index benchmarks 
+ reduce test size of BenchmarkMasterIndexLookupParallel
 2020-07-21 07:18:20 +02:00
greatroar
7bda28f31f Chaining hash table for repository.Index 
These are faster to construct but slower to access. The allocation rate
is halved, the peak memory usage almost halved compared to standard map.

Benchmark results on linux/amd64, -benchtime=3s -count=20:

name                                            old time/op    new time/op    delta
PackerManager-8                                    178ms ± 0%     178ms ± 0%     ~     (p=0.231 n=20+20)
DecodeIndex-8                                      4.54s ± 0%     4.30s ± 0%   -5.20%  (p=0.000 n=18+17)
DecodeIndexParallel-8                              4.54s ± 0%     4.30s ± 0%   -5.22%  (p=0.000 n=19+18)
IndexHasUnknown-8                                 44.4ns ± 5%    50.5ns ±11%  +13.82%  (p=0.000 n=19+17)
IndexHasKnown-8                                   48.3ns ± 0%    51.5ns ±12%   +6.68%  (p=0.001 n=16+20)
IndexAlloc-8                                       758ms ± 1%     616ms ± 1%  -18.69%  (p=0.000 n=19+19)
IndexAllocParallel-8                               234ms ± 3%     204ms ± 2%  -12.60%  (p=0.000 n=20+18)
MasterIndexLookupSingleIndex-8                     122ns ± 0%     145ns ± 9%  +18.44%  (p=0.000 n=14+20)
MasterIndexLookupMultipleIndex-8                   369ns ± 2%     429ns ± 8%  +16.27%  (p=0.000 n=20+20)
MasterIndexLookupSingleIndexUnknown-8             68.4ns ± 5%    74.9ns ±13%   +9.47%  (p=0.000 n=20+20)
MasterIndexLookupMultipleIndexUnknown-8            315ns ± 3%     369ns ±11%  +17.14%  (p=0.000 n=20+20)
MasterIndexLookupParallel/known,indices=5-8        743ns ± 1%     816ns ± 2%   +9.87%  (p=0.000 n=17+17)
MasterIndexLookupParallel/unknown,indices=5-8      238ns ± 1%     260ns ± 2%   +9.14%  (p=0.000 n=19+20)
MasterIndexLookupParallel/known,indices=10-8      1.01µs ± 3%    1.11µs ± 2%   +9.79%  (p=0.000 n=19+20)
MasterIndexLookupParallel/unknown,indices=10-8     222ns ± 0%     269ns ± 2%  +20.83%  (p=0.000 n=16+20)
MasterIndexLookupParallel/known,indices=20-8      1.06µs ± 2%    1.19µs ± 2%  +12.95%  (p=0.000 n=19+18)
MasterIndexLookupParallel/unknown,indices=20-8     413ns ± 1%     530ns ± 1%  +28.19%  (p=0.000 n=18+20)
SaveAndEncrypt-8                                  30.2ms ± 1%    30.4ms ± 0%   +0.71%  (p=0.000 n=19+19)
LoadTree-8                                         540µs ± 1%     576µs ± 1%   +6.73%  (p=0.000 n=20+20)
LoadBlob-8                                        5.64ms ± 0%    5.64ms ± 0%     ~     (p=0.883 n=18+17)
LoadAndDecrypt-8                                  5.93ms ± 0%    5.95ms ± 1%     ~     (p=0.247 n=20+19)
LoadIndex-8                                       25.1ms ± 0%    24.5ms ± 1%   -2.54%  (p=0.000 n=18+17)

name                                            old speed      new speed      delta
PackerManager-8                                  296MB/s ± 0%   296MB/s ± 0%     ~     (p=0.229 n=20+20)
SaveAndEncrypt-8                                 139MB/s ± 1%   138MB/s ± 0%   -0.71%  (p=0.000 n=19+19)
LoadBlob-8                                       177MB/s ± 0%   177MB/s ± 0%     ~     (p=0.890 n=18+17)
LoadAndDecrypt-8                                 169MB/s ± 0%   168MB/s ± 1%     ~     (p=0.227 n=20+19)

name                                            old alloc/op   new alloc/op   delta
PackerManager-8                                   91.8kB ± 0%    91.8kB ± 0%     ~     (p=0.772 n=12+19)
IndexAlloc-8                                       786MB ± 0%     400MB ± 0%  -49.04%  (p=0.000 n=20+18)
IndexAllocParallel-8                               786MB ± 0%     401MB ± 0%  -49.04%  (p=0.000 n=19+15)
SaveAndEncrypt-8                                  21.0MB ± 0%    21.0MB ± 0%   +0.00%  (p=0.000 n=19+19)

name                                            old allocs/op  new allocs/op  delta
PackerManager-8                                    1.41k ± 0%     1.41k ± 0%     ~     (all equal)
IndexAlloc-8                                        977k ± 0%      907k ± 0%   -7.18%  (p=0.000 n=20+20)
IndexAllocParallel-8                                977k ± 0%      907k ± 0%   -7.17%  (p=0.000 n=19+15)
SaveAndEncrypt-8                                    73.0 ± 0%      73.0 ± 0%     ~     (all equal)
 2020-07-19 13:58:22 +02:00
greatroar
255ba83c4b Parallel index benchmarks + benchmark optimizations 
createRandomIndex was using the global RNG, which locks on every call
It was also using twice as many random numbers as necessary and doing
a float division in every iteration of the inner loop.

BenchmarkDecodeIndex was using too short an input, especially for a
parallel version. (It may now be using one that is a bit large.)

Results on linux/amd64, -benchtime=3s -count=20:

name                                     old time/op    new time/op       delta
PackerManager-8                             178ms ± 0%        178ms ± 0%           ~     (p=0.165 n=20+20)
DecodeIndex-8                              13.6µs ± 2%  4539886.8µs ± 0%  +33293901.38%  (p=0.000 n=20+18)
IndexHasUnknown-8                          44.4ns ± 7%       44.4ns ± 5%           ~     (p=0.873 n=20+19)
IndexHasKnown-8                            49.2ns ± 3%       48.3ns ± 0%         -1.86%  (p=0.000 n=20+16)
IndexAlloc-8                                802ms ± 1%        758ms ± 1%         -5.51%  (p=0.000 n=20+19)
MasterIndexLookupSingleIndex-8              124ns ± 1%        122ns ± 0%         -1.41%  (p=0.000 n=20+14)
MasterIndexLookupMultipleIndex-8            373ns ± 2%        369ns ± 2%         -1.13%  (p=0.001 n=20+20)
MasterIndexLookupSingleIndexUnknown-8      67.8ns ± 3%       68.4ns ± 5%           ~     (p=0.753 n=20+20)
MasterIndexLookupMultipleIndexUnknown-8     316ns ± 3%        315ns ± 3%           ~     (p=0.846 n=20+20)
SaveAndEncrypt-8                           30.5ms ± 1%       30.2ms ± 1%         -1.09%  (p=0.000 n=19+19)
LoadTree-8                                  527µs ± 1%        540µs ± 1%         +2.37%  (p=0.000 n=19+20)
LoadBlob-8                                 5.65ms ± 0%       5.64ms ± 0%         -0.21%  (p=0.000 n=19+18)
LoadAndDecrypt-8                           7.07ms ± 2%       5.93ms ± 0%        -16.15%  (p=0.000 n=19+20)
LoadIndex-8                                32.1ms ± 2%       25.1ms ± 0%        -21.64%  (p=0.000 n=20+18)

name                                     old speed      new speed         delta
PackerManager-8                           296MB/s ± 0%      296MB/s ± 0%           ~     (p=0.159 n=20+20)
SaveAndEncrypt-8                          138MB/s ± 1%      139MB/s ± 1%         +1.10%  (p=0.000 n=19+19)
LoadBlob-8                                177MB/s ± 0%      177MB/s ± 0%         +0.21%  (p=0.000 n=19+18)
LoadAndDecrypt-8                          141MB/s ± 2%      169MB/s ± 0%        +19.24%  (p=0.000 n=19+20)

name                                     old alloc/op   new alloc/op      delta
PackerManager-8                            91.8kB ± 0%       91.8kB ± 0%           ~     (p=0.826 n=19+12)
IndexAlloc-8                                786MB ± 0%        786MB ± 0%         +0.01%  (p=0.000 n=20+20)
SaveAndEncrypt-8                           21.0MB ± 0%       21.0MB ± 0%         -0.00%  (p=0.012 n=20+19)

name                                     old allocs/op  new allocs/op     delta
PackerManager-8                             1.41k ± 0%        1.41k ± 0%           ~     (all equal)
IndexAlloc-8                                 977k ± 0%         977k ± 0%         +0.01%  (p=0.022 n=20+20)
SaveAndEncrypt-8                             73.0 ± 0%         73.0 ± 0%           ~     (all equal)
 2020-07-19 13:58:05 +02:00
greatroar
02bec13ef2 Fix repository_test.BenchmarkSaveAndEncrypt 
The benchmark was actually testing the speed of index lookups.

name              old time/op    new time/op        delta
SaveAndEncrypt-8     101ns ± 2%    31505824ns ± 1%    +31311591.31%  (p=0.000 n=10+10)

name              old speed      new speed          delta
SaveAndEncrypt-8  41.7TB/s ± 2%       0.0TB/s ± 1%         -100.00%  (p=0.000 n=10+10)

name              old alloc/op   new alloc/op       delta
SaveAndEncrypt-8     1.00B ± 0%  20989508.40B ± 0%  +2098950740.00%  (p=0.000 n=10+10)

name              old allocs/op  new allocs/op      delta
SaveAndEncrypt-8      0.00             123.00 ± 0%            +Inf%  (p=0.000 n=10+9)

(The actual speed is ca. 131MiB/s.)
 2020-07-05 17:41:42 +02:00
Alexander Weiss
1361341c58 don't save duplicate packIDs when using internal/repository/Index.Store 2020-06-14 07:56:24 +02:00
Alexander Weiss
ce4a2f4ca6 save packIDs and duplicates separately 
A side remark to the definition of Index.blob:

Another possibility would have been to use:
blob       map[restic.BlobHandle]*indexEntry

This would have led to the following sizes:
key: 32 + 1 = 33 bytes
value: 8 bytes
indexEntry:  8 + 4 + 4 = 16 bytes
each packID: 32 bytes

To save N index entries, we would therefore have needed:
N * OF * (33 + 8) bytes + N * 16 + N * 32 bytes / BP = N * 82 bytes

More precicely, using a pointer instead of a direct entry is the better memory choice if:
OF * 8 bytes + entrysize < OF * entrysize <=> entrysize > 8 bytes * OF/(OF-1)
Under the assumption of OF=1.5, this means using pointers would have been the better choice
if sizeof(indexEntry) > 24 bytes.
 2020-06-14 07:56:21 +02:00
Alexander Weiss
cf979e2b81 make offset and length uint32 2020-06-14 07:50:19 +02:00
Michael Eischer
d92e2c5769 simplify index code 2020-06-14 07:50:19 +02:00
Alexander Weiss
7419844885 add changelog, benchmark, memory calculation 2020-06-14 07:50:15 +02:00
Alexander Weiss
d3c59d18e5 Fix inconsistency of saving/loading config file 
Fix saving/loading config file: Always set ID to a zero ID.
 2020-06-13 16:30:23 +02:00
MichaelEischer
dd7b4f54f5
Merge pull request #2709 from greatroar/minio-sha256 
Use Minio's optimized SHA-256
 2020-06-12 23:32:58 +02:00
MichaelEischer
735a8074d5
Merge pull request #2773 from aawsome/index-uploads+knownblobs 
Fix non-intuitive repo behavior
 2020-06-12 22:41:04 +02:00
Alexander Weiss
70347e95d5 disable index uploads for prune command 
+ modifications of changelog
 2020-06-12 09:24:38 +02:00
Alexander Weiss
91906911b0 Fix non-intuitive repository behavior 
- The SaveBlob method now checks for duplicates.
- Moves handling of pending blobs to MasterIndex.
  -> also cleans up pending index entries when they are saved in the index
  -> when using SaveBlob no need to care about index any longer
- Always check for full index and save it when storing packs.
  -> removes the need of an index uploader
  -> also removes the verbose "uploaded intermediate index" messages
- The Flush method now also saves the index
- Fix race condition when checking and saving full/non-finalized indexes
 2020-06-11 13:05:23 +02:00
MichaelEischer
6856d1e422
Merge pull request #2749 from aawsome/fix-fullindex 
Change condition for full index
 2020-06-10 20:40:19 +02:00
Alexander Weiss
8c1261ff02 changed condition for full index 2020-06-07 22:00:49 +02:00
greatroar
f97a680887 Fix repository benchmarks 
BenchmarkLoad{AndDecrypt,Blob} were spending between 38% and 50% of
their time measuring SHA-256 performance in their checks.
 2020-04-28 07:57:29 +02:00
greatroar
42a3db05b0 Use Minio's optimized SHA-256 
internal/repository benchmarks on an Intel i7-3770k:

name               old speed      new speed       delta
PackerManager-8     209MB/s ± 1%    291MB/s ± 1%  +38.94%  (p=0.008 n=5+5)
SaveAndEncrypt-8    112MB/s ± 1%    135MB/s ± 1%  +20.25%  (p=0.008 n=5+5)
 2020-04-28 07:57:18 +02:00
greatroar
e7d7b85d59 Merge Repository.{LoadBlob,loadBlob} 
Pushing the allocation logic down into the former loadBlob body means
that fewer allocations have to be performed:

name              old time/op    new time/op    delta
LoadTree-8           478µs ± 1%     481µs ± 2%    ~     (p=0.315 n=9+10)
LoadBlob-8          11.6ms ± 1%    11.6ms ± 2%    ~     (p=0.393 n=10+10)
LoadAndDecrypt-8    13.3ms ± 3%    13.3ms ± 3%    ~     (p=0.905 n=10+9)
LoadIndex-8         33.6ms ± 2%    33.2ms ± 1%  -1.15%  (p=0.028 n=10+9)

name              old alloc/op   new alloc/op   delta
LoadTree-8          41.2kB ± 0%    41.1kB ± 0%  -0.23%  (p=0.000 n=10+10)
LoadBlob-8          2.28kB ± 0%    2.18kB ± 0%  -4.21%  (p=0.000 n=10+10)
LoadAndDecrypt-8    2.10MB ± 0%    2.10MB ± 0%    ~     (all equal)
LoadIndex-8         5.22MB ± 0%    5.22MB ± 0%    ~     (p=0.631 n=10+10)

name              old allocs/op  new allocs/op  delta
LoadTree-8             652 ± 0%       651 ± 0%  -0.15%  (p=0.000 n=10+10)
LoadBlob-8            24.0 ± 0%      23.0 ± 0%  -4.17%  (p=0.000 n=10+10)
LoadAndDecrypt-8      30.0 ± 0%      30.0 ± 0%    ~     (all equal)
LoadIndex-8          30.2k ± 0%     30.2k ± 0%    ~     (p=0.610 n=10+10)

name              old speed      new speed      delta
LoadBlob-8        86.4MB/s ± 1%  85.9MB/s ± 2%    ~     (p=0.393 n=10+10)
LoadAndDecrypt-8  75.4MB/s ± 3%  75.4MB/s ± 3%    ~     (p=0.858 n=10+9)
 2020-04-23 10:04:20 +02:00
greatroar
be5a0ff59f Centralize buffer allocation and size checking in Repository.LoadBlob 
Benchmark results for internal/repository:

name              old time/op    new time/op    delta
LoadTree-8           479µs ± 2%     478µs ± 1%   ~     (p=0.780 n=10+9)
LoadBlob-8          11.6ms ± 2%    11.6ms ± 1%   ~     (p=0.631 n=10+10)
LoadAndDecrypt-8    13.2ms ± 2%    13.3ms ± 3%   ~     (p=0.631 n=10+10)

name              old alloc/op   new alloc/op   delta
LoadTree-8          41.2kB ± 0%    41.2kB ± 0%   ~     (all equal)
LoadBlob-8          2.28kB ± 0%    2.28kB ± 0%   ~     (all equal)
LoadAndDecrypt-8    2.10MB ± 0%    2.10MB ± 0%   ~     (all equal)

name              old allocs/op  new allocs/op  delta
LoadTree-8             652 ± 0%       652 ± 0%   ~     (all equal)
LoadBlob-8            24.0 ± 0%      24.0 ± 0%   ~     (all equal)
LoadAndDecrypt-8      30.0 ± 0%      30.0 ± 0%   ~     (all equal)

name              old speed      new speed      delta
LoadBlob-8        86.2MB/s ± 2%  86.4MB/s ± 1%   ~     (p=0.594 n=10+10)
LoadAndDecrypt-8  75.7MB/s ± 2%  75.4MB/s ± 3%   ~     (p=0.617 n=10+10)
 2020-04-23 10:04:20 +02:00
MichaelEischer
16710454f4
Merge pull request #2628 from MichaelEischer/one-element-pack-lists 
cache: Don't sort one element pack lists
 2020-04-18 17:09:06 +02:00
MichaelEischer
a1352906e2
Merge pull request #2622 from greatroar/optimize-packer-manager 
Fix PackerManager benchmark and optimize hashing.Writer
 2020-04-18 12:46:34 +02:00
Peter Schultz
90fc639a67 Allow specifying user and host when adding keys 
The username and hostname for new keys can be specified with the new
--user and --host flags, respectively. The flags are used only by the
`key add` command and are otherwise ignored.

This allows adding keys with for a desired user and host without having
to run restic as that particular user on that particular host, making
automated key management easier.

Co-authored-by: James TD Smith <ahktenzero@mohorovi.cc>
 2020-03-23 13:11:10 +01:00
rawtaz
7d9300efca
Merge pull request #2637 from greatroar/unused 
Remove Go 1.5 compatibility code
 2020-03-18 22:22:15 +01:00
greatroar
4de12bf593 Remove restic.RandReader 
math/rand.Rand has implemented Reader since Go 1.6. The repacking tests
are not deterministic, but they weren't before, either.
 2020-03-09 10:00:28 +01:00
Michael Eischer
b46cc6d57e repository: Don't sort one element pack lists 
When loading a blob, restic first looks up pack files containing the
blob. To avoid unnecessary work an already cached pack file is preferred.
However, if there is only a single pack file to choose from (which is
the normal case) sorting the one-element list won't change anything.
Therefore avoid the unnecessary cache check in that case.
 2020-03-07 10:26:06 +01:00
greatroar
b592614061 Improve PackerManager benchmark 
The previous benchmark spent much of its time allocating RNGs and
generating too many random numbers. It now spends 90% of its time
hashing and half of the rest writing to files.

name             old time/op    new time/op    delta
PackerManager-8     319ms ± 1%     247ms ± 1%  -22.48%  (p=0.000 n=20+18)

name             old speed      new speed      delta
PackerManager-8   143MB/s ± 1%   213MB/s ± 1%  +48.63%  (p=0.000 n=10+18)

name             old alloc/op   new alloc/op   delta
PackerManager-8     635kB ± 0%      92kB ± 0%  -85.48%  (p=0.000 n=10+19)

name             old allocs/op  new allocs/op  delta
PackerManager-8     1.64k ± 0%     1.43k ± 0%  -12.76%  (p=0.000 n=10+20)
 2020-03-05 22:30:03 +01:00
greatroar
b7c3039eb2 Remove Go 1.5 compatibility code from PackerManager benchmark 
This alone is enough to speed up the benchmark by ~10%.
 2020-03-05 22:29:06 +01:00
Alexander Neumann
c50f91b7f9
Merge pull request #2602 from greatroar/no-bufpool 
Remove sync.Pool from internal/repository
 2020-03-01 10:50:57 +01:00
greatroar
8526cc6647 Remove sync.Pool from internal/repository 
The pool was used improperly, causing more allocations to be
performed than without it.

name              old time/op    new time/op    delta
SaveAndEncrypt-8    36.8ms ± 2%    36.9ms ± 2%    ~     (p=0.218 n=10+10)

name              old speed      new speed      delta
SaveAndEncrypt-8   114MB/s ± 2%   114MB/s ± 2%    ~     (p=0.218 n=10+10)

name              old alloc/op   new alloc/op   delta
SaveAndEncrypt-8    21.1MB ± 0%    21.0MB ± 0%  -0.44%  (p=0.000 n=10+10)

name              old allocs/op  new allocs/op  delta
SaveAndEncrypt-8      79.0 ± 0%      77.0 ± 0%  -2.53%  (p=0.000 n=10+10)
 2020-02-29 17:54:46 +01:00
greatroar
4f6fd9fb98 Remove remnant of Go 1.9 compatibility code from tests 2020-02-26 22:23:38 +01:00
rawtaz
d8da9c4401
Merge pull request #2577 from alrs/fix-internal-errs 
internal: Fix code and test dropped errors
 2020-02-12 23:41:54 +01:00