From: Marcelo Tosatti <mtosatti@redhat.com>
To: Gerd von Egidy <lists@egidy.de>
Cc: kvm-devel@lists.sourceforge.net
Subject: Re: disappointing speed with virtio_blk
Date: Wed, 16 Apr 2008 20:40:55 -0300 [thread overview]
Message-ID: <20080416234055.GA4869@dmt> (raw)
In-Reply-To: <200804170105.50963.lists@egidy.de>
On Thu, Apr 17, 2008 at 01:05:50AM +0200, Gerd von Egidy wrote:
> Hi Marcelo,
>
> > virtio-blk is doing synchronous IO which blocks the guest CPU.
> >
> > This is especially bad for write intensive loads where the guest
> > will hang in the host write throttling logic.
> >
> > In the meantime please try the following patch:
> >
> > http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg14732.html
>
> Thank you for this hint.
>
> I tried it this evening with kvm 66 - which should include your patch, right?
Hi Gerd,
No its not included. The issue is being worked on.
-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
next prev parent reply other threads:[~2008-04-16 23:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-13 21:04 disappointing speed with virtio_blk Gerd von Egidy
2008-04-13 21:22 ` Charles Duffy
2008-04-13 21:55 ` Gerd von Egidy
2008-04-14 0:29 ` Marcelo Tosatti
2008-04-16 23:05 ` Gerd von Egidy
2008-04-16 23:40 ` Marcelo Tosatti [this message]
2008-04-18 21:27 ` Gerd von Egidy
2008-04-18 21:49 ` Marcelo Tosatti
2008-04-18 22:32 ` Gerd von Egidy
2008-04-14 1:41 ` Anthony Liguori
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=20080416234055.GA4869@dmt \
--to=mtosatti@redhat.com \
--cc=kvm-devel@lists.sourceforge.net \
--cc=lists@egidy.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.