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

[Xen-devel] 2.4.29-xenU VBD performance (problem)


  • To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
  • From: Pasi Kärkkäinen <pasik@xxxxxx>
  • Date: Mon, 14 Feb 2005 14:24:33 +0200
  • Delivery-date: Mon, 14 Feb 2005 12:26:50 +0000
  • List-id: List for Xen developers <xen-devel.lists.sourceforge.net>

Hi!

In dom0 (2.6.10-xen0), I'm able to write to lvm-volume at 35 - 40 MB/sec
(megabytes per second). Measured with:
"sync; date; dd if=/dev/zero of=/dev/vg0/lv0 bs=1024k count=100; sync; date"

But, under domU (2.4.29-xenU), using that same lvm-volume as VBD, I only get 
around 
10 - 12 MB/sec write performance measured in the same way.

What could cause this? This is a test-box, and I was only running one xenU
domain, and both the dom0 and domU were idle (besides that dd performance
measurement).

Thanks!

-- Pasi Kärkkäinen
       
                                   ^
                                .     .
                                 Linux
                              /    -    \
                             Choice.of.the
                           .Next.Generation.


-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_ide95&alloc_id396&op=click
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel


 


Rackspace

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