Hello, I'm currently testing the KVM part of the new RHEL5.4. I'm using IoZone becnhmark to test IO performance.
For my test I have dedicate a LVM partition to the IoZone benchmark : iozone -a -U /mnt/bench/ -f /mnt/bench/test-file -R -b <file.xls> I use the LVM partition in evry test (inside the VM or outside the VM). Something is strange : IO Disk performance are better in a VM ... I have test a KVM VM with the option cache=none for the disk (system and bench), but the performance are still better ... Well I suppose something (KVM, special optimisation ?) do a cache but I didn't find anything to control the behaviour .... Any idea plz ? Thank you in advance. Regards, -- Guguin Benoit _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
