| From: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | RBN <rbn(dot)ggl(at)gmail(dot)com> |
| Cc: | pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: fsync tests |
| Date: | 2010-06-11 04:27:03 |
| Message-ID: | AANLkTilG7mMQhkJRneAAgL6qVgbas_YgS8QSlPk9GpwL@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-admin |
On Sun, Jun 6, 2010 at 5:07 PM, RBN <rbn(dot)ggl(at)gmail(dot)com> wrote:
>
>
> I ran test_fsync on a local ext 3 partition and on a raid jfs SSD array
> 8x32GB RAID10. The local disk returned quickly and gave what looks like
> acceptable results. However, the RAID looks pretty bad. Any one have any
> idea why fsync would take so long on an SSD RAID 10.
Are you just running 1 loop? Those numbers are worse than bad if
you're running one loop.
How are the SSD drives attached to your machine? HW RAID, JBOD HW
Caching, direct HBA?
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