> What problem exactly you are seeing in the clog, is it the contention
> around CLOGControlLock or generally accessing CLOG is slower. If
> former, then we already have a patch [1] to address it.
It's the contention around CLogControlLock. Thank you for the pointer,
next time I'll try it with the group clog update patch.
--
Alexander Kuzmenkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company