Re: Linux/PostgreSQL scalability issue - problem with 8 cores

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От Jakub Ouhrabka
Тема Re: Linux/PostgreSQL scalability issue - problem with 8 cores
Дата
Msg-id 478CD535.6030004@comgate.cz
обсуждение исходный текст
Ответ на Re: Linux/PostgreSQL scalability issue - problem with 8 cores  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Linux/PostgreSQL scalability issue - problem with 8 cores  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-performance
 > Huh.  One transaction truncating a dozen tables?  That would match the
 > sinval trace all right ...

It should be 4 tables - the shown log looks like there were more truncates?

 > You might be throwing the baby out with the bathwater,
 > performance-wise.

Yes, performance was the initial reason to use truncate instead of
delete many years ago. But today the truncated tables usualy contain
exactly one row - quick measurements now show that it's faster to issue
delete instead of truncate in this case.

Again, many thanks for your invaluable advice!

Kuba

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