| From: | bricklen <bricklen(at)gmail(dot)com> |
|---|---|
| To: | German Becker <german(dot)becker(at)gmail(dot)com> |
| Cc: | "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: Disk latency goes up during certaing pediods |
| Date: | 2013-07-29 20:06:41 |
| Message-ID: | CAGrpgQ8_sKxbp70dnMNvMSFAsB8duoo2uTHDDkULww_BVZzmSA@mail.gmail.com |
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| Lists: | pgsql-admin |
On Mon, Jul 29, 2013 at 12:41 PM, German Becker <german(dot)becker(at)gmail(dot)com>wrote:
> Luis, The disk only has the WAL (pg_xlog ) directory. Brett, Here are the
> mount options:
>
> /dev/sdb1 on /storage/sdb1 type ext3
> (rw,noatime,data=writeback,errors=remount-ro)
>
> BTW The original fs was ext4, now I am trying with ext3, with the exact
> same results. No noticeable changes using diferent journal modes.
>
> I also tried disabling the journal altogether, which dramatically reduced
> the disk usage, but nevertheless there was this latency spikes.
>
I haven't been following this thread and might have missed it, but did you
show your checkpoint_completion_target?
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