TIER-0.2.0 has been released

Tier-0.2.0 adds crash recovery and some bug fixes.

A brief benchmark of tier, flashcache and bcache with fio shows these results:
flashcache
read : io=16635MB, bw=56778KB/s, iops=14194 , runt=300017msec
read : io=872528KB, bw=2908.4KB/s, iops=727 , runt=300007msec
write: io=8237.5MB, bw=28117KB/s, iops=7029 , runt=300001msec
write: io=6038.4MB, bw=20611KB/s, iops=5152 , runt=300001msec

bcache
read : io=20480MB, bw=103370KB/s, iops=25842 , runt=202878msec
read : io=936760KB, bw=3122.4KB/s, iops=780 , runt=300014msec
write: io=15604MB, bw=53263KB/s, iops=13315 , runt=300001msec
write: io=6453.1MB, bw=22025KB/s, iops=5506 , runt=300016msec

tier
read : io=20480MB, bw=167819KB/s, iops=41954 , runt=124965msec
read : io=528236KB, bw=1760.8KB/s, iops=440 , runt=300012msec
write: io=20480MB, bw=172857KB/s, iops=43214 , runt=121323msec
write: io=5091.7MB, bw=17371KB/s, iops=4342 , runt=300141msec

The SSD used in this test had a size of 10GB while the SAS drive had a size of 100GB.

The fio configuration file that was used is:
[global]
bs=4k
ioengine=libaio
iodepth=4
size=20g
direct=1
runtime=60
directory=/mnt/fio
filename=test.file
[seq-read]
rw=read
stonewall
[rand-read]
rw=randread
stonewall
[seq-write]
rw=write
stonewall
[rand-write]
rw=randwrite
stonewall
p5rn7vb
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One Response to TIER-0.2.0 has been released

  1. Jean says:

    That’s wonderful, you killed bcache! People at dm-devel should know this.

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