Package: linux-2.6 Version: 2.6.32-29 While I was running a qemu-kvm virtual machine, I placed the virtual disk on one of my btrfs partition and it results in very low I/O performance. Comparing with an Ext3/4 host partition, it slows several times.
The test I ran was installing Squeeze using d-i beta2 netinst ISO image, using expert installation mode: 1. The one using btrfs got nearly stopped at approximately 33% (it's the time to start installing base system, i.e. installing apt/aptitude). It takes about 1 hour to go forward to 50%, with my hard disk making a lot of noise, and finally I shut down the virtual machine. 2. The other one using ext4, which I tried to compare the performance, can finish the installation in ~45 minutes. The two partition are exactly the same hard disk, actually I formatted the previous btrfs partition to ext4 when I ran the test. -- Regards, Aron Xu -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
