Am 26.06.2015 um 12:47 schrieb Steve Clark <sclark@xxxxxxxxxxxxx>:
> On 06/25/2015 06:44 PM, Chris Murphy wrote:
>> Gordon Messmer gordon.messmer at gmail.com Wed Jun 24 01:42:13 UTC 2015
>>
>>> I wondered the same thing, especially in the context of someone who
>>> prefers virtual machines. LV-backed VMs have *dramatically* better disk
>>> performance than file-backed VMs.
>> I did a bunch of testing of Raw, qcow2, and LV backed VM storage circa
>> Fedora 19/20 and found very little difference. What mattered most was
>> the (libvirt) cache setting, accessible by virsh edit the xml config
>> or virt-manager through the GUI. There have been a lot of
> Which setting did you find most effective?
Keep in mind - write caching can improve perf but
also increases data loss on abnormal VM shutdowns
--
LF
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