From: Paolo Bonzini <pbonzini@redhat.com>
To: "Benoît Canet" <benoit.canet@irqsave.net>
Cc: Erik Rull <erik.rull@rdsoftware.de>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Stefan Hajnoczi <stefanha@gmail.com>
Subject: Re: [Qemu-devel] Boot Problems Windows XP guest
Date: Wed, 28 Aug 2013 15:59:35 +0200 [thread overview]
Message-ID: <521E0247.7060202@redhat.com> (raw)
In-Reply-To: <20130828135143.GC6170@irqsave.net>
Il 28/08/2013 15:51, Benoît Canet ha scritto:
>> What is the command line to use for avg bps = 1MB/s, max bps = 0?
> On the monitor it would be:
>
> block_set_io_throttle 1048576 0 0 0 0 0
>
> When configuring throttle on the command line it would be:
>
> -drive file=foo.raw,if=virtio,cache=none,bps=1048576
>
> Also remember that the code is setting bps_max = avg/10 to please guest cfq
> schedulers so a little burst will be done at startup.
Yes, I'm afraid that the burst is problematic here since the current
throttling algorithm doesn't help (and IIUC it behaves as if it had
max=avg/10 due to the 100ms slice time). This is Windows so no CFQ
here. Do you need to set bps_max=1 or will bps_max=0 work too?
Paolo
next prev parent reply other threads:[~2013-08-28 13:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-26 9:52 [Qemu-devel] Boot Problems Windows XP guest Erik Rull
2013-08-27 7:38 ` Stefan Hajnoczi
2013-08-27 20:26 ` Erik Rull
2013-08-27 21:31 ` Paolo Bonzini
2013-08-27 21:37 ` Anthony Liguori
2013-08-28 8:05 ` Erik Rull
2013-08-28 11:05 ` Paolo Bonzini
2013-08-28 7:50 ` Stefan Hajnoczi
2013-08-28 9:07 ` Erik Rull
2013-08-28 13:14 ` Paolo Bonzini
2013-08-28 13:34 ` Benoît Canet
2013-08-28 13:41 ` Paolo Bonzini
2013-08-28 13:51 ` Benoît Canet
2013-08-28 13:59 ` Paolo Bonzini [this message]
2013-08-28 14:05 ` Benoît Canet
2013-08-28 14:05 ` Paolo Bonzini
2013-08-28 14:26 ` Benoît Canet
2013-08-28 18:21 ` Erik Rull
2013-08-28 18:40 ` Benoît Canet
2013-08-28 19:22 ` Erik Rull
2013-08-29 7:53 ` Erik Rull
2013-08-29 9:25 ` Benoît Canet
2013-08-29 14:51 ` Erik Rull
2013-08-29 14:55 ` Paolo Bonzini
2013-08-29 15:31 ` Erik Rull
2013-08-28 13:19 ` Stefan Hajnoczi
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=521E0247.7060202@redhat.com \
--to=pbonzini@redhat.com \
--cc=benoit.canet@irqsave.net \
--cc=erik.rull@rdsoftware.de \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@gmail.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;
as well as URLs for NNTP newsgroup(s).