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