linux-kernel - Re: xfs: very slow after mount, very slow at umount

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 27 Jan 2011 19:59:51 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Dave Chinner <david@...morbit.com>
CC:	Stan Hoeppner <stan@...dwarefreak.com>,
	Christoph Hellwig <hch@...radead.org>,
	Alex Elder <aelder@....com>,
	Linux Kernel <linux-kernel@...r.kernel.org>, xfs@....sgi.com
Subject: Re: xfs: very slow after mount, very slow at umount

On 11-01-27 06:41 PM, Dave Chinner wrote:
> On Thu, Jan 27, 2011 at 10:12:23AM -0500, Mark Lord wrote:
..
>> Can you recommend a good set of mkfs.xfs parameters to suit the characteristics
>> of this system? 
> 
> http://xfs.org/index.php/XFS_FAQ#Q:_I_want_to_tune_my_XFS_filesystems_for_.3Csomething.3E

That entry says little beyond "blindly trust the defaults".
But thanks anyway (really).

> And perhaps you want to consider the allocsize mount option, though
> that shouldn't be necessary for 2.6.38+...

That's a good tip, thanks.
>From my earlier posting:

>   /dev/sdb1 on /var/lib/mythtv type xfs
> (rw,noatime,allocsize=64M,logbufs=8,largeio)

Maybe that allocsize value could be increased though.
Perhaps something on the order of 256MB might do it.

Thanks again!
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/