Still, please don't :)
At least drop_caches before testing.
Hi!
In this case, using dd is quite acceptable.
----- Original Message -----
From: vitalif@xxxxxxxxxx
To: "Fyodor Ustinov" <ufm@xxxxxx>
Cc: "EDH - Manuel Rios Fernandez" <mriosfer@xxxxxxxxxxxxxxxx>,
"ceph-users" <ceph-users@xxxxxxx>
Sent: Tuesday, 3 September, 2019 15:18:23
Subject: Re: Re: Strange hardware behavior
Please never use dd for disk benchmarks.
Use fio. For linear write:
fio -ioengine=libaio -direct=1 -invalidate=1 -name=test -bs=4M
-iodepth=32 -rw=write -runtime=60 -filename=/dev/sdX
--
With best regards,
Vitaliy Filippov
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