Re: 8.4 COPY performance regression on Solaris

От: Kenneth Marshall
Тема: Re: 8.4 COPY performance regression on Solaris
Дата: ,
Msg-id: 20090619133349.GI23785@it.is.rice.edu
(см: обсуждение, исходный текст)
Ответ на: 8.4 COPY performance regression on Solaris  (Alan Li)
Ответы: Re: 8.4 COPY performance regression on Solaris  (Tom Lane)
Список: pgsql-performance

Скрыть дерево обсуждения

8.4 COPY performance regression on Solaris  (Alan Li, )
 Re: 8.4 COPY performance regression on Solaris  (Stefan Kaltenbrunner, )
 Re: 8.4 COPY performance regression on Solaris  (Kenneth Marshall, )
  Re: 8.4 COPY performance regression on Solaris  (Tom Lane, )

Hi,

Looking at the XLogInsert() from 8.3 and 8.4, the 8.4
version includes a call to RecoveryInProgress() at
the top as well as a call to TRACE_POSTGRESQL_XLOG_INSERT().
Could either of those have caused a context switch or
cache flush resulting in worse performance.

Cheers,
Ken


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