On 03/23/2013 06:42 AM, Thomas Knauth wrote: > Hi Eric, > > thanks for the reply. This indeed solved my issue. Suspending is much > faster without the artificial throttle. > > On a related note: I'm curious about the baseline resume latency. It takes > about 5 seconds to resume an instance with a tiny amount of state (500 MB > dump size). The data is all in the page cache. I measure the time it takes > the 'virsh restore <dump file>' command to return. > > Any opinions on what could be the issue here? I've also linked to a figure > illustrating the problem. Resume speed scales nicely with increased dump > size, but the baseline penalty feels awfully high
Sorry, but I haven't ever profiled it to see where the problems might lie. It sounds like it might be an interesting project if you want to take it on, but I don't have the time to spend on it myself at the moment. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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