Description of problem: This morning I have found my machine to be very slow and it seems xenstored is the culprit. I have two active domUs so I paused them via virt-manager to see if that would alleviate the problem but it doesn't seem to have made much difference. System load is currently 4 and all disk I/O operations are very slow. Version-Release number of selected component (if applicable): xen-3.0.3-8.fc6.x86_64 How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: The Linux domU is using LVM partitions, the other one is using file-backed storage in /var/lib/xen/images
Known problem reported upstream: http://lists.xensource.com/archives/html/xen-devel/2006-10/msg00487.html Not aware of any current work to re-writing XenStored to not suck yet :-(
The performance problems are even worse in Xen 3.0.5 http://lists.xensource.com/archives/html/xen-devel/2007-04/msg00663.html I am experimenting with ways to address it....
This report targets FC6, which is now end-of-life. Please re-test against Fedora 7 or later, and if the issue persists, open a new bug. Thanks