| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Greg Stark <gsstark(at)mit(dot)edu>, Russell Smith <mr-russ(at)pws(dot)com(dot)au>, josh(at)agliodbs(dot)com, Postgres Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Checkpoint cost, looks like it is WAL/CRC |
| Date: | 2005-07-07 15:51:35 |
| Message-ID: | 8784.1120751495@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Tom Lane wrote:
>> The point here is that fsync-off is only realistic for development
>> or playpen installations. You don't turn it off in a production
>> machine, and I can't see that you'd turn off the full-page-write
>> option either. So we have not solved anyone's performance problem.
> Yes, this is basically another fsync-like option that isn't for
> production usage in most cases. Sad but true.
Just to make my position perfectly clear: I don't want to see this
option shipped in 8.1. It's reasonable to have it in there for now
as an aid to our performance investigations, but I don't see that it
has any value for production.
regards, tom lane
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