From: Christian Borntraeger <borntraeger@de.ibm.com>
To: "Fabian Deutsch" <fabian.deutsch@gmx.de>
Cc: kvm@vger.kernel.org
Subject: Re: Network poblems using virtio and tap.
Date: Sat, 6 Sep 2008 09:40:27 +0200 [thread overview]
Message-ID: <200809060940.27765.borntraeger@de.ibm.com> (raw)
In-Reply-To: <20080901124245.96790@gmx.net>
Am Montag, 1. September 2008 schrieb Fabian Deutsch:
> Hey.
>
> I'm observing some network problems when using virtio and a tap if.
> The trouble is a drop of network troughput from abot 90Mbit/s to about
90kbit/s,
> after about 1.7 TB of transferred data.
>
> Setup
> Host:
> - Fedora 8, nearly all updates
> - Intel(R) Xeon(R) CPU X3210 @ 2.13GHz
> - 8GB RAM
> - 2 Guests
>
> Guest:
> - Fedora 9 all updates
> - virtio nic using tap
> - samba sharing a mountpoint using an iscsi target
Can you tell us what host kernel and what guest kernel you are using? The were
some changes to tun/tap for virtio lately which could make a difference.
Christian
next prev parent reply other threads:[~2008-09-06 7:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-01 12:42 Network poblems using virtio and tap Fabian Deutsch
2008-09-05 11:47 ` Fabian Deutsch
2008-09-06 7:40 ` Christian Borntraeger [this message]
2008-09-06 12:04 ` Fabian Deutsch
2008-09-06 12:26 ` richard lucassen
2008-09-06 13:47 ` Fabian Deutsch
2008-09-06 15:34 ` richard lucassen
2008-09-07 20:05 ` richard lucassen
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=200809060940.27765.borntraeger@de.ibm.com \
--to=borntraeger@de.ibm.com \
--cc=fabian.deutsch@gmx.de \
--cc=kvm@vger.kernel.org \
/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