From: Russell Cattelan <cattelan@thebarn.com>
To: Jan Derfinak <ja@mail.upjs.sk>
Cc: "Hendrik ." <chasake@yahoo.com>, xfs@oss.sgi.com
Subject: Re: Poor VMWare disk performance on XFS partition
Date: Mon, 24 Mar 2008 09:00:04 -0500 [thread overview]
Message-ID: <47E7B3E4.1020205@thebarn.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0803240126501.4354@alienAngel.home.sk>
Jan Derfinak wrote:
> On Sun, 23 Mar 2008, Hendrik . wrote:
>
>
>> I've been converting some of my drives from EXT3 to
>> XFS a while ago. Now I notice poor disk performance
>> when using XFS as underlying filesystem for a VMware
>> virtual drive. I did some experiments and it really
>> seems to be the XFS filesystem 'trashing' the speed of
>> a VMware Windows XP guest.
>>
>
> Mount XFS partition with "nobarrier" option. I'm using also
> logbufs=8,logbsize=256k for vmware.
>
> jan
>
>
I can verify that ... barriers are killers when running vmware guest
disk/memory images.
The preallocation would also help out quite bit if you don't mind
dedicating the
disk space vs the sparse file method, which allow for over subscribing
the physical
space. Going through once in a while and shutting down the guests and
defragmenting
it a good idea.
I would be interested to find out the results of seekwatcher on shutdown
but I have also seen the long shutdowns.
-Russell
next prev parent reply other threads:[~2008-03-24 13:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-23 14:50 Poor VMWare disk performance on XFS partition Hendrik .
2008-03-23 20:42 ` Eric Sandeen
2008-03-24 4:02 ` Andi Kleen
2008-03-24 0:41 ` Jan Derfinak
2008-03-24 14:00 ` Russell Cattelan [this message]
2008-03-24 15:24 ` Peter Grandi
2008-03-24 18:56 ` Jan Derfinak
2008-03-24 19:12 ` Josef 'Jeff' Sipek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=47E7B3E4.1020205@thebarn.com \
--to=cattelan@thebarn.com \
--cc=chasake@yahoo.com \
--cc=ja@mail.upjs.sk \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox