Re: further testing on IDE drives
От | Bruce Momjian |
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Тема | Re: further testing on IDE drives |
Дата | |
Msg-id | 200310101839.h9AIdJn03045@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: further testing on IDE drives (Josh Berkus <josh@agliodbs.com>) |
Ответы |
Re: further testing on IDE drives
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Список | pgsql-performance |
Josh Berkus wrote: > Bruce, > > > Yes. If you were doing multiple WAL writes before transaction fsync, > > you would be fsyncing every write, rather than doing two writes and > > fsync'ing them both. I wonder if larger transactions would find > > open_sync slower? > > Want me to test? I've got an ide-based test machine here, and the TPCC > databases. I would be interested to see if wal_sync_method = fsync is slower than wal_sync_method = open_sync. How often are we doing more then one write before a fsync anyway? -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
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