Add timing data to all Com_ counters in SHOW STATUS

Bug #589480 reported by Baron Schwartz on 2010-06-04
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server moved to

Bug Description

For workload analysis, it would be very helpful to have timing data for all of the Com_ counters in SHOW STATUS.

For example, if you see a spike in query time, which types of commands consumed the time? If a particular type of query is run more frequently, then graphs of the Com_ counters will show that. But if the query is run the same amount of times but has an unstable query plan and isn't using an index sometimes, the counters will be the same and the response time is what will change.

Another example: has the ratio of time spent executing reads -vs- writes changed? Or, how much time is spent executing writes? These answers can be helpful to understand things such as whether the slave is likely to start falling behind soon. Examining a graph of the sum of the response time of all the write queries can show whether there is more execution time than wall-clock time, which will cause the slave to fall behind.

Here's a sample of current output:


What I'd like to see is


And so forth. This should be a floating-point number in seconds. Or, an integer with microseconds elapsed. Either is fine for me.

Vadim Tkachenko (vadim-tk) wrote :


Please use percona-server to report bugs.

affects: percona-patches → percona-server
Changed in percona-server:
assignee: nobody → Oleg Tsarev (tsarev)
status: New → Confirmed
importance: Undecided → Wishlist
milestone: none → 5.1-11.1
Changed in percona-server:
milestone: 5.1-11.1 → 5.1-12.0
Changed in percona-server:
milestone: 5.1.47-12.0 → 5.1-12.0
Changed in percona-server:
milestone: 5.1-12.0 → 5.1-13.0
Changed in percona-server:
milestone: 5.1-13.0 → none
Stewart Smith (stewart) on 2011-05-25
Changed in percona-server:
assignee: Oleg Tsarev (tsarev) → nobody
status: Confirmed → Triaged

Percona now uses JIRA for bug reports so this bug report is migrated to:

To post a comment you must log in.
This report contains Public information  Edit
Everyone can see this information.

Other bug subscribers