Go is not cgroup aware and by default will set GOMAXPROCS to the number
of available threads, regardless of whether it is within the allocated
quota. This behaviour causes high amount of CPU throttling and degraded
application performance.
- In the few places where we wrap errors, use the new Go 1.13 "%w"
construction instead of %s or %v.
- Where we create errors with constant strings, consistently use
errors.New and not fmt.Errorf.
- Remove capitalization from errors in the few places where we had that.
A potential practical use is to encode a short version of the hostname
at the beginning of the device ID.
For example:
jb@syno:~/s/g/s/s/c/stvanity $ stvanity abc
Want 15 bits for prefix "ABC", about 3.3e+04 certs to test (statistically speaking)
Found ABCFPWS-JKDIFV3-E5IUAQW-DK53WVR-HY7XWBS-56H33GR-CJQI67Q-VGXRMAW
Saved to cert.pem, key.pem
jb@syno:~/s/g/s/s/c/stvanity $ stvanity $(hostname)
Want 20 bits for prefix "SYNO", about 1e+06 certs to test (statistically speaking)
Trying 554 certs/s, tested 8307 so far in 15s, expect ~32m total time to complete
Trying 543 certs/s, tested 16277 so far in 30s, expect ~32m total time to complete
...
The rest is just a matter of patience.
jb@syno:~/s/g/s/s/c/stvanity $ stvanity syncthing
Want 50 bits for prefix "SYNCTHI-NG", about 1.1e+15 certs to test (statistically speaking)
Trying 529 certs/s, tested 7941 so far in 15s, expect ~67443 years total time to complete
...
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/2986
