From: Eric Sandeen <sandeen@sandeen.net>
To: Smit Shah <getsmit@gmail.com>
Cc: linux-xfs@oss.sgi.com
Subject: Re: XFS Preallocate using ALLOCSP
Date: Tue, 16 Jun 2009 12:32:39 -0500 [thread overview]
Message-ID: <4A37D737.70004@sandeen.net> (raw)
In-Reply-To: <8770d98c0906161028j1cc5cbadl49d30092fddf3dbe@mail.gmail.com>
Smit Shah wrote:
> On 6/16/09, Felix Blyakher <felixb@sgi.com> wrote:
>> On Jun 16, 2009, at 10:16 AM, Eric Sandeen wrote:
>>> Maybe I should ask what the end goal is here. :)
>>>
> Just to see if preallocation using fallocate helps reducing the
> fragmentation and increases the throughput. I guess it wll help
> reduce the fragmentation but the write performance is going to suffer.
Depends on the IO you do, I think. I'd be curious to know exactly how
you're running preallocation & iometer so I could give it a shot, to see
why xfs seems to be doing worse than ext4.
Thanks,
-Eric
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next prev parent reply other threads:[~2009-06-16 17:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-16 0:18 XFS Preallocate using ALLOCSP Smit Shah
2009-06-16 2:00 ` Smit Shah
2009-06-16 3:34 ` Eric Sandeen
2009-06-16 6:44 ` Smit Shah
2009-06-16 7:34 ` Smit Shah
2009-06-16 15:16 ` Eric Sandeen
2009-06-16 16:42 ` Felix Blyakher
2009-06-16 17:28 ` Smit Shah
2009-06-16 17:32 ` Eric Sandeen [this message]
2009-06-16 21:38 ` Smit Shah
2009-06-17 1:04 ` Michael Monnerie
2009-06-16 17:41 ` Felix Blyakher
2009-06-16 21:42 ` Smit Shah
2009-06-16 22:05 ` Eric Sandeen
2009-06-16 22:32 ` Felix Blyakher
2009-06-16 22:19 ` Smit Shah
2009-06-16 22:26 ` Felix Blyakher
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