Hi, Talking about VM, some prefer virtulbox, some VMWare. Don't know how many of you prefer kvm. I'm wondering if you could do the speed benchmark of your preferred VM, and compare the result to that of your host.
The reason that I'm asking -- recently I noticed that my kvm is extremely slow, its disk access seems at least 10 times slower (*12 hours* to restore a 600M partition?!). Googling revealed that's a known problem. e.g., http://blog.kagesenshi.org/2008/03/qemu-slow-disk-throughput.html "... I uses Qemu for hosting the guest OS for my development environment. For 2 days, I keep wondering why Zope/Plone loads damn slow on the qemu machine eventhough I have allocated both cores of the processor, and 512RAM for it. 15 minutes simply to start up is really not desirable. I kept on investigating and guess what: [root@unapcict ~]# /sbin/hdparm -t /dev/hda /dev/hda: Timing buffered disk reads: 18 MB in 3.03 seconds = 5.95 MB/sec Just for a comparison, the host hdd's speed: [root@Nobuyuki ~]# /sbin/hdparm -t /dev/sdc /dev/sdc: Timing buffered disk reads: 174 MB in 3.01 seconds = 57.71 MB/sec Darn.. So, thats what the reason. . . " See, it *IS* at least 10 times slower. Please comment. Thanks -- Tong (remove underscore(s) to reply) http://xpt.sourceforge.net/techdocs/ http://xpt.sourceforge.net/tools/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/ii4gtl$1r1$1...@dough.gmane.org
