| To: | stan@xxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?) |
| From: | Emmanuel Florac <eflorac@xxxxxxxxxxxxxx> |
| Date: | Sat, 7 Apr 2012 10:49:12 +0200 |
| Cc: | Stefan Ring <stefanrin@xxxxxxxxx>, Linux fs XFS <xfs@xxxxxxxxxxx> |
| In-reply-to: | <4F7F7C25.8040605@xxxxxxxxxxxxxxxxx> |
| Organization: | Intellique |
| References: | <CAAxjCEwBMbd0x7WQmFELM8JyFu6Kv_b+KDe3XFqJE6shfSAfyQ@xxxxxxxxxxxxxx> <20350.9643.379841.771496@xxxxxxxxxxxxxxxxxx> <20350.13616.901974.523140@xxxxxxxxxxxxxxxxxx> <CAAxjCEzkemiYin4KYZX62Ei6QLUFbgZESdwS8krBy0dSqOn6aA@xxxxxxxxxxxxxx> <4F7F7C25.8040605@xxxxxxxxxxxxxxxxx> |
Le Fri, 06 Apr 2012 18:28:37 -0500 vous écriviez:
> Creating four 60 drive RAID10 arrays, let alone 60 drive RAID6
> arrays, would be silly.
From my experience, with modern arrays don't make much of a difference.
I've reached decent IOPS (i. e. about 4000 IOPS) on large arrays of up
to 46 drives provided there are enough threads -- more threads than
spindles, preferably.
--
------------------------------------------------------------------------
Emmanuel Florac | Direction technique
| Intellique
| <eflorac@xxxxxxxxxxxxxx>
| +33 1 78 94 84 02
------------------------------------------------------------------------
|
| Previous by Date: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?), Stefan Ring |
|---|---|
| Next by Date: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?), Emmanuel Florac |
| Previous by Thread: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?), Dave Chinner |
| Next by Thread: | Re: XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?), Stan Hoeppner |
| Indexes: | [Date] [Thread] [Top] [All Lists] |