| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Josh Berkus <josh(at)agliodbs(dot)com> |
| Cc: | "Zeugswetter Andreas DAZ SD" <ZeugswetterA(at)spardat(dot)at>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, "Bruce Momjian" <pgman(at)candle(dot)pha(dot)pa(dot)us>, "Bruno Wolff III" <bruno(at)wolff(dot)to>, "Greg Stark" <gsstark(at)mit(dot)edu>, "Russell Smith" <mr-russ(at)pws(dot)com(dot)au>, "Postgres Hackers" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Checkpoint cost, looks like it is WAL/CRC |
| Date: | 2005-07-08 04:12:41 |
| Message-ID: | 8407.1120795961@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Josh Berkus <josh(at)agliodbs(dot)com> writes:
>> If so, please undo the previous patch (which disabled page dumping
>> entirely) and instead try removing this block of code, starting
>> at about xlog.c line 620 in CVS tip:
> Will do. Results in a few days.
Great. BTW, don't bother testing snapshots between 2005/07/05 2300 EDT
and just now --- Bruce's full_page_writes patch introduced a large
random negative component into the timing ...
regards, tom lane
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