Re: pgsql-server/src backend/storage/buffer/bufmgr ...
| От | Bruce Momjian |
|---|---|
| Тема | Re: pgsql-server/src backend/storage/buffer/bufmgr ... |
| Дата | |
| Msg-id | 200401301041.i0UAfPk01658@candle.pha.pa.us обсуждение |
| Ответ на | Re: pgsql-server/src backend/storage/buffer/bufmgr ... (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-committers |
Tom Lane wrote: > Jan Wieck <JanWieck@Yahoo.com> writes: > > Now doing fsync() or fdatasync() of possibly dozens of files in a row, > > forcing the kernel to do one scattered file after another, letting the > > disk heads dance like step-chicken on a hot tin ... that will be an > > improvement, oh boy. > > I'm not convinced it would be so bad. Normally you'd only be issuing > those operations at checkpoint time, and if the bgwriter has been doing Agreed, I don't have a problem with fsync() during checkpoint instead of sync. I had problems with fsync from the background writer and performance. Let me post ideas to hackers & win32 list. -- 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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