[CentOS] Really bad KVM disk performance
Marcelo Roccasalva
marcelo-centos at irrigacion.gov.arThu Feb 23 23:12:36 UTC 2012
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On Mon, Feb 20, 2012 at 02:26, Bob Puff <bob at nleaudio.com> wrote: > > Hi Gang, [...] > On my machine's Centos 5.7 x32 guest install: > # hdparm -tT /dev/hda > > /dev/hda: > Timing cached reads: 1864 MB in 2.16 seconds = 863.87 MB/sec > Timing buffered disk reads: 358 MB in 3.08 seconds = 116.17 MB/sec "cached reads" is a measure of linux buffer bandwitdth, not disk performance!!. It should be several thousands... In a real machine, it could be a motherboard problem... -- Marcelo "¿No será acaso que ésta vida moderna está teniendo más de moderna que de vida?" (Mafalda)
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