[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-users] disk performance about half in domU? + question about XenSource


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Johnn Tan <linuxweb@xxxxxxxxx>
  • Date: Mon, 13 Aug 2007 17:16:30 -0400
  • Delivery-date: Mon, 13 Aug 2007 14:17:00 -0700
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:subject:content-type:content-transfer-encoding; b=jFtSb7I2F45oH9U6nxJGgrB68J59oyD5QpHTvik+kyagbUFAnQoMcsZnXqfK4lLbwfjLoSq21XLHj7c9PygNjO6WQbcsUJy9zpvWWdqMfKRSowKPiV9mKQewm2/2AD9mbypYbR4zcuMkyp81xp46HnAXUXc75Am8kXm0q01gTMY=
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Based on some tests we ran, it seems the biggest performance hit you get from running within domU is from disk I/O. We did some mysql read and write tests, and for both, our performance is about half that compared to native. Has that been others' experience?

Is there any way to make this better? We are using physical partitions. In contrast, cpu/memory tests appear to be near native.


Does buying commercial Xen (XenSource) help in anyway? Do they have optimized disk drivers?

johnn

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.