From: Avi Kivity <avi@redhat.com>
To: Arne Kepp <ak@opengeo.org>
Cc: kvm@vger.kernel.org
Subject: Re: Poor write- and overall performance
Date: Mon, 15 Dec 2008 08:38:28 +0200 [thread overview]
Message-ID: <4945FB64.3040109@redhat.com> (raw)
In-Reply-To: <49459A51.7040905@opengeo.org>
Arne Kepp wrote:
> Hi,
>
> I'm testing KVM 80 (prepackaged from lfarkas.org) on CentOS 5.2 (both
> guest and host) and comparing against Xen 3.3.0. The only modification
> I've really made is that I've set noatime on both guest and host. The
> guest is running straight from an LVM volume and is assigned 4 Gb RAM
> and 4 virtual CPUs.
I suggest trying scsi in kvm-81, or setting cache=writeback if you want
to keep using IDE (but be aware of the potential for severe data loss
with the latter option).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-12-15 6:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-14 23:44 Poor write- and overall performance Arne Kepp
2008-12-15 6:38 ` Avi Kivity [this message]
2008-12-15 10:22 ` Henrik Holst
2008-12-15 10:26 ` Avi Kivity
2008-12-15 10:29 ` Henrik Holst
2008-12-20 1:44 ` Arne Kepp
2008-12-20 5:19 ` Ryan Harper
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