[sheepdog-users] Performance without cache
sirio81 at gmail.com
Wed Aug 21 10:56:54 CEST 2013
2013/8/21 MORITA Kazutaka <morita.kazutaka at gmail.com>:
> Can you give us the complete sheep command line options and the qemu
> tree you are using?
Yesterday I was using the master branch of sheep and qemu 1.6.50 (from git).
Both have been downloaded and compiled yesterday morning (~7 utc).
Note: qemu was compiled on my laptop (always debian wheezy).
Sheep was run like this
sheep -n size=20000 /mnt/sheep/dsk01,/mnt/sheep/dsk01/obj,/mnt/sheep/dsk02
Now I'm running
QEMU emulator version 1.6.0 (the branch taken from
And latest master of sheep
I removed the object cache option (I was not using it anyway. cache=directsync)
sheep -n /mnt/sheep/dsk01,/mnt/sheep/dsk01/obj,/mnt/sheep/dsk02
> (The output of 'git log -1 --oneline' on your
> qemu directory may help us.)
git log -1 --oneline
81017d9 sheepdog: check simultaneous create in resend_aioreq
Now option '-n' is working fine!
I get 45-60 M/s.
dd if=/dev/zero of=/mnt/small/c bs=1M count=512 oflag=direct
qemu-system-x86_64 -name wheezy_template -enable-kvm -drive
file=sheepdog:big,if=virtio -drive file=sheepdog:small,if=virtio -m
512 -smp 2
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