Investigating Kallithea performance issues

[Thomas De Schampheleire]

Hi,

Sometimes the performance of our Kallithea instance takes a hit, such that
page loading can take many many seconds, and it is unclear what causes this.

Could you suggest ways to investigate this?

Things that come to mind:
- how to find database performance problems, how to determine if new
indexes are needed?
- how to detect cache (invalidation) issues? Which parameters to tweak?
- how to detect I/O issues?


All practical hints are welcome.

Thanks,
Thomas
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