Benjamin Budts wrote: > > Hi Laurent, > > Intresting stuff, could you send me your patch and the benchmarks please ? > I think I might try it out.
patch: http://permalink.gmane.org/gmane.comp.emulators.qemu/15969 benchmarks: http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/3373 > thx a lot > > Laurent Vivier wrote: >> Benjamin Budts wrote: >> [snip] >> >>> 1* When i run hdparm -t /dev/sda1 I have 80-85Mbit/s read speed on my >>> guest os (debian etch) >>> >>> If I run it ''in'' a virtual machine (using also debian Etch with >>> 2.6.21.5 kernel) I get : 28-35Mbits... >>> >>> I even tried to put the image on a seperate disk to be able to have >>> more, but I can't get more then 35Mbits out of it... >>> >>> How can I up the disk performance without having to replace >>> everything by SCSI hardware ? >>> >>> >> >> You can improve performance by using virtual SCSI disks. I post some >> benchchmarks with dbench on this list at the end of may (24/05). >> >> QEmu (and thus KVM) doesn't support natively SCSI disk for the PC virtual >> machine. I post a patch the 1st of march on QEmu mailing list to add a >> "-sda" >> parameter to use SCSI disk (but my approach was not approved by >> maintainers). >> The problem with the virtual SCSI is you cannot boot on it because >> there is no >> BIOS to manage it. But you can use it as storage and boot linux using the >> parameter "-kernel" to load directly the kernel from the host disk. >> >> Regards, >> Laurent >> > > -- ------------- [EMAIL PROTECTED] -------------- "Any sufficiently advanced technology is indistinguishable from magic." - Arthur C. Clarke
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