[sheepdog-users] [sheepdog users] cluster snapshot VS qemu-img

Valerio Pachera sirio81 at gmail.com
Mon Aug 18 10:45:37 CEST 2014

I've been testing cluster snapshot with the new --multithread option.

converting the same vdi:

cluster snapshot --multithread
time 4'14''
dog cpu 42%
sheep cpu 23%
I/O nic input: 116Mbit/s

qemu-img convert
time 2'13''
qemu-img cpu 20%
sheep cpu 45%
I/O nic input: 205Mbit/s
Restore: 6'01''

cluster snapshot (without --multithread)
time 3'27''
dog cpu 55%
sheep cpu 30%
I/O nic input: 140Mbit/s
Note: cpu % was not always constant
Note: this test has been run after the snapshot restore.

Sheepdog daemon version 0.8.0_304_g7beecc9
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