On 04/27/2013 10:13 PM, Stefan Priebe wrote:
Hello list,
today i was testing next branch against bobtail using a testcluster. I
upgraded this bobtail one to next branch.
I used QEMU 1.4.1 with librdb (for next branch i applied josh writeback
patch). My Testsystem had 5 Hosts with one OSD each and set replication
to 2.
All values where done with 8 jobs in parallel using fio in Qemu Guest.
I'm not seeing the same. Although my tests were with Bonnie++ I actually
noticed a very big increase.
The biggest increase was write performance which went up a lot going
from Bobtail to next, but with next VMs (Qemu 1.2.2) are a lot more
snappier.
The benchmarks don't give me a huge difference in read performance, but
my VMs feel a lot faster however.
Wido
bobtail:
rand 4k: write: io=164316KB, bw=1783KB/s, iops=445, runt= 92136msec
rand 4k: read : io=1117MB, bw=12710KB/s, iops=3177, runt= 90028msec
seq 4m: write: io=8588MB, bw=97233KB/s, iops=23, runt= 90444msec
seq 4m: read : io=83616MB, bw=951227KB/s, iops=232, runt= 90013msec
next branch:
write: io=177236KB, bw=1963KB/s, iops=490, runt= 90284msec
read : io=223628KB, bw=2408KB/s, iops=601, runt= 92875msec
write: io=25936MB, bw=294443KB/s, iops=71, runt= 90199msec
read : io=69856MB, bw=794585KB/s, iops=193, runt= 90025msec
Greets,
Stefan
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