This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-users] Best Practices for PV Disk IO?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Best Practices for PV Disk IO?
From: Christopher Chen <muffaleta@xxxxxxxxx>
Date: Mon, 20 Jul 2009 17:26:15 -0700
Delivery-date: Mon, 20 Jul 2009 17:26:52 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=8MhyLOo8aICDou2bJit+sd4ElL2MMYAPDNMlNNKH6h0=; b=KHPZb/1ilUSMT+3UKAT3Ba1Z/jcoEzICIq7mMyd/3Ifxu/K/6VdUV8PrseKnCzsKaZ l862kntcp3woa2foh5PCBdhQaRfqBRfjCnNdZZnaaAj8+V5BgaIwrkdSfsIqNrRnqm+a EPjaUZFhWh4Jz4jnDW/fL/fdu8MKn4PPl7GS4=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=qIq4+Qx3f21VDY+SwkR+HwM7ck4N6eDw1fvBeVQ46Mc/B0PzzSBmYyRDK42IJPhKKJ rxJRRAQqsR01lg2q4uInL+M4NWRKmrB0jO9kcMtLFK/CFOCkr7aHGdfPmNgNkYgsdQCM VVBor1W4H9i7GP5x8t0ICiQeWv7OiE0q/Ag3M=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
I was wondering if anyone's compiled a list of places to look to
reduce Disk IO Latency for Xen PV DomUs. I've gotten reasonably
acceptable performance from my setup (Dom0 as a iSCSI initiator,
providing phy volumes to DomUs), at about 45MB/sec writes, and
80MB/sec reads (this is to a IET target running in blockio mode).

As always, reducing latency for small disk operations would be nice,
but I'm not sweating it. I just wondering if anyone's experienced
similar behavior, and if they've found ways to improve performance.



Chris Chen <muffaleta@xxxxxxxxx>
"The fact that yours is better than anyone else's
is not a guarantee that it's any good."
-- Seen on a wall

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>