On 05/26/2017 04:08 PM, Alberto Garcia wrote:
On Fri 26 May 2017 02:47:55 PM CEST, Anton Nefedov wrote:
Tried the another machine; about 10% improvement here
[...]
[root@localhost ~]# fio --name=randwrite --blocksize=4k
--filename=/dev/sdb --rw=randwrite --direct=1 --ioengine=libaio
--size=2g --io_size=32m
In my tests I sometimes detected slight performance decreases in that
HDD scenario but using 'write' instead of 'randwrite' (and --runtime=60
instead of --io_size).
Can you try and see how that works for you?
Berto
For me it keeps giving pretty much the same result before and after
write: io=512736KB, bw=8545.4KB/s, iops=2136, runt= 60004msec
/Anton
