On Wed, Jul 20, 2011 at 06:56:50PM -0400, Mikulas Patocka wrote: > Performance testing --- 10000 dm devices created with dmsetup: > > The numbers are time in seconds to perform these operations: > 1. create 10000 devices > 2. ls -la /sys/block > 3. ls -al /sys/block after a cache flush (echo 3 >/proc/sys/vm/drop_caches) > 4. dmsetup remove_all > > no patches 109 9.8 12 1624 > patch 1 109 9.1 12 15 > patches 1,2 120 0.19 3.0 16 > patches 1,2,3 68 0.17 0.47 12 > patches 1,2,3,4 68 0.15 0.48 11 > all patches 37 0.16 0.46 3.3 Fantastic improvement Mikulas! -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
