At Tue, 27 Aug 2013 21:35:35 +0900, Hitoshi Mitake wrote: > > Current dog issues request for gathering VDI information in a > sequential manner (parse_vdi()). This way is not scalable when a > number of VDIs becomes larger. > > This patch parallelize parse_vdi() with work queue. Some dog > commands which call parse_vdi() can enjoy performance improvement. > > The below is an sample of dog vdi list. The test is done on 16 > nodes cluster which has 3000 VDIs. > > Before: > $ time sh -c "dog/dog vdi list -a 10.68.13.1 > /dev/null" > sh -c "dog/dog vdi list -a 10.68.13.1 > /dev/null" 8.81s user 0.24s system > 70% cpu 12.876 total > > After: > % time sh -c "dog/dog vdi list -a 10.68.13.1 > /dev/null" > sh -c "dog/dog vdi list -a 10.68.13.1 > /dev/null" 14.35s user 2.02s system > 209% cpu 7.816 total
user time + system time > total time Is this really correct? Thanks, Kazutaka -- sheepdog mailing list [email protected] http://lists.wpkg.org/mailman/listinfo/sheepdog
