I guess the bad performance it goes with the writing. For example on decompression of a big tar.gz, installing rpm packages. Also on restoring a MySQL Database...<br><br>The first clue when i knew that something were wrong was on the FS formating stage. It took really long time to format 40 GB to ext3. I did the same on other machine with a sata disk... surprise! same software and hardware config except for the inferior disk type and did it in no time.<br>
<br>Regards Francisco.<br><br><div class="gmail_quote">2009/5/19 Christopher G. Stach II <span dir="ltr"><<a href="mailto:cgs@ldsys.net">cgs@ldsys.net</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">----- "Francisco Pérez" <<a href="mailto:fperez.x@gmail.com">fperez.x@gmail.com</a>> wrote:<br>
<br>
> OK, here it is:<br>
><br>
> name = "vm01"<br>
> uuid = "2fa05fe5-9b52-3527-5bf5-efb88555c567"<br>
> maxmem = 5836<br>
> memory = 5836<br>
> vcpus = 1<br>
> bootloader = "/usr/bin/pygrub"<br>
> on_poweroff = "destroy"<br>
> on_reboot = "restart"<br>
> on_crash = "restart"<br>
> vfb = [ ]<br>
> disk = [ "tap:aio:/var/lib/xen/images/vm01.img,xvda,w" ]<br>
> vif = [ "mac=00:16:3e:15:6f:cd,bridge=xenbr0" ]<br>
><br>
> Thanks.<br>
<br>
</div>What kind of "disk performance"? Read? Write? Random? Linear?<br>
<br>
As for general tuning, use block devices (LVM) unless you have to do otherwise. Do you do a large amount of I/O in general? Do you have dom0's CPU pinned to an unshared core?<br>
<br>
--<br>
<font color="#888888">Christopher G. Stach II<br>
</font><div><div></div><div class="h5"><br>
<br>
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