From: Eric Sandeen <sandeen@redhat.com>
To: stan@hardwarefreak.com
Cc: "Assarsson, Emil" <Emil.Assarsson@sonyericsson.com>,
"xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: XFS memory recomendation?
Date: Fri, 17 Feb 2012 18:17:46 -0800 [thread overview]
Message-ID: <4F3F0A4A.7050708@redhat.com> (raw)
In-Reply-To: <4F3F05D4.1020705@hardwarefreak.com>
On 2/17/12 5:58 PM, Stan Hoeppner wrote:
> On 2/16/2012 8:49 PM, Dave Chinner wrote:
>> On Thu, Feb 16, 2012 at 12:50:57PM +0100, Assarsson, Emil wrote:
>>> Hi,
>>>
>>> Are there any recommendations about how much memory I need based
>>> on the size of the file system and/or amount of files? For
>>> example: how much memory would be optimal for a 20TB file system
>>> with 3000000 files?
>>
>> /me shrugs
>>
>>> I guess it depends on the usage pattern?
>>
>> Totally.
>
> Allow me to drag the OP's question under a different light...
>
> I have a 20TB XFS filesystem with 3000000 files. What is the minimum
> amount of system RAM I will need to run an xfs_check or xfs_repair or
> xfs_[tool] on this filesystem, assuming Linux has been put into a low
> overhead state, and said tool[s] has access to the bulk of the system
> memory?
>
> Is there a formula available so any XFS user can calculate this
> xfs_[tools] RAM requirement, given FS size X and file count Y?
>
http://xfs.org/index.php/XFS_FAQ#Q:_Which_factors_influence_the_memory_usage_of_xfs_repair.3F
-Eric
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next prev parent reply other threads:[~2012-02-18 2:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-16 11:50 XFS memory recomendation? Assarsson, Emil
2012-02-17 2:49 ` Dave Chinner
2012-02-17 13:05 ` Michael Monnerie
2012-02-17 15:27 ` Assarsson, Emil
2012-02-18 1:14 ` Eric Sandeen
2012-02-18 1:58 ` Stan Hoeppner
2012-02-18 2:17 ` Eric Sandeen [this message]
2012-02-19 13:16 ` Michael Monnerie
2012-02-19 21:00 ` Eric Sandeen
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