octoleo/gh-ost
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

beautify

Browse Source
This commit is contained in:
Shlomi Noach 2016-09-01 13:45:37 +02:00
parent 34a7306f4b
commit ad3d1b2384
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/subsecond-lag.md
View File

@ -26,6 +26,8 @@ As a common example, many use [pt-heartbeat](https://www.percona.com/doc/percona
Note `--interval=0.1` to indicate `10` heartbeats per second. Note `--interval=0.1` to indicate `10` heartbeats per second.
You would then provide `--replication-lag-query="select unix_timestamp(now(6)) - unix_timestamp(ts) as ghost_lag_check from your_schema.heartbeat order by ts desc limit 1"` You would then provide
gh-ost ... --replication-lag-query="select unix_timestamp(now(6)) - unix_timestamp(ts) as ghost_lag_check from your_schema.heartbeat order by ts desc limit 1"
Our production migrations use sub-second lag throttling and are able to keep our entire fleet of replicas well below `1sec` lag. Our production migrations use sub-second lag throttling and are able to keep our entire fleet of replicas well below `1sec` lag.