From: Vasiliy Tolstov <v.tolstov@selfip.ru>
To: Andrey Korolyov <andrey@xdel.ru>
Cc: libvir-list@redhat.com, QEMU <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] strange behavior when using iotune
Date: Mon, 24 Nov 2014 19:56:16 +0400 [thread overview]
Message-ID: <CACaajQtWChG_sq5SO5kSKG31sMDvGtH_X+rrkhp+1Q1H5uJJ+Q@mail.gmail.com> (raw)
In-Reply-To: <CABYiri_1quB1a59G57oHSyyT=K+2KCfesMDuhJooRu2V2E7_=Q@mail.gmail.com>
2014-11-24 17:18 GMT+03:00 Andrey Korolyov <andrey@xdel.ru>:
> I am not sure for friendliness of possible dd interpretations for new
> leaky bucket mechanism, as its results can be a little confusing even
> for fio (all operations which are above the limit for long-running
> test will have 250ms latency, putting down score numbers in most
> popular tests like UnixBench), also w/o sync options these results are
> almost meaningless. May be fio with direct=1|fsync=1 (for fs) will
> give a more appropriate numbers in your case.
My fail. I'm forget to add iflag=direct to dd. Now all fine i get is
around 20 MB/s which compared to 5000 iops.
Thanks.
--
Vasiliy Tolstov,
e-mail: v.tolstov@selfip.ru
jabber: vase@selfip.ru
prev parent reply other threads:[~2014-11-24 15:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-24 12:02 [Qemu-devel] strange behavior when using iotune Vasiliy Tolstov
2014-11-24 13:57 ` Andrey Korolyov
2014-11-24 14:09 ` Vasiliy Tolstov
2014-11-24 14:18 ` Andrey Korolyov
2014-11-24 15:56 ` Vasiliy Tolstov [this message]
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