> My test was run with synchronous_commit=off, so I didn't expect the
> group commit patch to have much of an impact. I included it mostly to
> see whether by chance it helped anyway (since it also helps other WAL
> flushes, not just commits) or whether it caused any regression.
Oh, I see.
> One somewhat odd thing about these numbers is that, on permanent
> tables, all of the patches seemed to show regressions vs. master in
> single-client throughput. That's a slightly difficult result to
> believe, though, so it's probably a testing artifact of some kind.
Maybe kernel cache effect?
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp
