Bug 237453

Summary: Xenstored slowing system down even with paused domains
Product: [Fedora] Fedora Reporter: Adam Huffman <bloch>
Component: xenAssignee: Daniel Berrange <berrange>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: bstein, katzj, xen-maint
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Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2008-02-26 19:06:16 EST Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Adam Huffman 2007-04-23 06:28:39 EDT
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):

How reproducible:

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Additional info:

The Linux domU is using LVM partitions, the other one is using file-backed
storage in /var/lib/xen/images
Comment 1 Daniel Berrange 2007-04-23 08:03:09 EDT
Known problem reported upstream:


Not aware of any current work to re-writing XenStored to not suck yet :-(
Comment 2 Daniel Berrange 2007-04-25 15:44:45 EDT
The performance problems are even worse  in Xen 3.0.5   


I am experimenting with ways to address it....
Comment 3 Chris Lalancette 2008-02-26 19:06:16 EST
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.