Michael Mey
2006-Feb-09 16:37 UTC
[Xen-users] strange behaviour of domU - i/o performance tests
Hi, I am currently making some i/o performance tests within domUs with iozone3. One scenario is a domU with file-backed VBDs (root and swap) as sda1 and sda2 lying on an nfs-kernel-server (2.6.14.4 - Debian Sarge). The exact iozone command is: iozone -a -R -b result.xls -f /tmp/iozone.test -n 1m -g 256m -i 0 -i 1 As soon as the iozone-test comes to a filesize of 132M, the complete! system (including dom0) hangs, no more access possible! Every time the complete system has to be rebooted. I experienced this behaviour both with Xen 3.0.0 and Xen 3.0.1 compiled from source. It is an reproducable error. I''d appreciate if anyone had a clue on why this is happening or had made some similar experience. Thanks, regards, Michael -- ---------------------------------------------------------------------------------------- Michael Mey Thinking Objects Software GmbH | mailto: michael.mey@to.com Lilienthalstrasse 2/1 | phone: +49 711 88770-147 70825 Stuttgart-Korntal, Germany | fax: +49 711 88770-449 ---------------------------------------------------------------------------------------- _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
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