I'm seeing higher results with cache=writeback. A few comparison runs show thats there's a decent bit of variation per run: writeback: 41.1, 41.2, 39.3, 39.7, 39.1 none: 42.2, 33.3, 35.2, 30.4, 30.6 I know these tests are not very conclusive but I'm not seeing a huge difference between the two cache modes. > On 05/04/11 18:55, Chris Webb wrote: >> -drive file=sheepdog:test,if=ide,index=0 >> >> I'm only getting around 5MB/s with the same write test. > > Try cache=none in your drive declaration, I noticed similar I/O > performance even with LVM backed volumes in recent KVM, until I disabled > the cache. > -- > sheepdog mailing list > sheepdog at lists.wpkg.org > http://lists.wpkg.org/mailman/listinfo/sheepdog > |