[libvirt] libvirk KVM save (migrate) terribly slow

Nikola Ciprich extmaillist at linuxbox.cz
Thu Dec 10 07:05:12 UTC 2009

I noticed that using libvirt to save running domain is terribly slow,
I mean it can take even 10 minutes to save VM with 2GB RAM, although
the host is almost idle (8CPU, 16GB RAM). If I understand correctly, 
libvirt first pauses the vm and then migrates it to file (optionally through gzip).
Restoring it back to running state is almost instant.
I guess this is not what should be expected, is there something particular 
I should check?
Thanks a lot in advance
with best regards

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