[Bug 550409] Re: Slow disk IO for all guests with all disc modes and types.

[Fabian Henniges]

Successfully started kvm without libvirt and with additional -drive options: cache=writeback,aio=native 
Copied 1,3GB to windows guest share over GB network with 41MB/s sustained transfer rate. 
Windows and linux Guests are running very smooth again. 
Maybe libvirt should use those -drive options by default?!

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Slow disk IO for all guests with all disc modes and types.
https://bugs.launchpad.net/bugs/550409
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