Re: bad performance on Solaris 10
| От | Robert Lor |
|---|---|
| Тема | Re: bad performance on Solaris 10 |
| Дата | |
| Msg-id | 4434C505.1000205@sun.com обсуждение исходный текст |
| Ответ на | Re: bad performance on Solaris 10 (Chris Mair <list@1006.org>) |
| Ответы |
Re: bad performance on Solaris 10
|
| Список | pgsql-performance |
Chris Mair wrote: >Ok, so I did a few runs for each of the sync methods, keeping all the >rest constant and got this: > >open_datasync 0.7 >fdatasync 4.6 >fsync 4.5 >fsync_writethrough not supported >open_sync 0.6 > >in arbitrary units - higher is faster. > >Quite impressive! > > > > Chris, Just to make sure the x4100 config is similar to your Linux system, can you verify the default setting for disk write cache and make sure they are both enabled or disabled. Here's how to check in Solaris. As root, run "format -e" -> pick a disk -> cache -> write_cache -> display Not sure how to do it on Linux though! Regards, -Robert
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