Thread (9 messages) 9 messages, 6 authors, 2012-02-19

Re: XFS memory recomendation?

From: Stan Hoeppner <hidden>
Date: 2012-02-18 01:58:50

On 2/16/2012 8:49 PM, Dave Chinner wrote:
On Thu, Feb 16, 2012 at 12:50:57PM +0100, Assarsson, Emil wrote:
quoted
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
quoted
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?

-- 
Stan

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