From: Max Reitz <mreitz@redhat.com>
To: Fam Zheng <famz@redhat.com>, qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v7 5/5] qemu-iotests: Add 093 for IO throttling
Date: Fri, 30 Jan 2015 10:30:56 -0500 [thread overview]
Message-ID: <54CBA3B0.70503@redhat.com> (raw)
In-Reply-To: <1422586186-9925-6-git-send-email-famz@redhat.com>
On 2015-01-29 at 21:49, Fam Zheng wrote:
> This case utilizes qemu-io command "aio_{read,write} -q" to verify the
> effectiveness of IO throttling options.
>
> It's implemented by driving the vm timer from qtest protocol, so the
> throttling timers are signaled with determinied time duration. Then we
> verify the completed IO requests are within 10% error of bps and iops
> limits.
>
> "null" protocol is used as the disk backend so that no actual disk IO is
> performed on host, this will make the blockstats much more
> deterministic. Both "null-aio" and "null-co" are covered, which is also
> a simple cross validation test for the driver code.
>
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
> tests/qemu-iotests/093 | 114 +++++++++++++++++++++++++++++++++++++++++++++
> tests/qemu-iotests/093.out | 5 ++
> tests/qemu-iotests/group | 1 +
> 3 files changed, 120 insertions(+)
> create mode 100755 tests/qemu-iotests/093
> create mode 100644 tests/qemu-iotests/093.out
Reviewed-by: Max Reitz <mreitz@redhat.com>
next prev parent reply other threads:[~2015-01-30 15:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-30 2:49 [Qemu-devel] [PATCH v7 0/5] block: Add a qemu-iotests case for IO throttling Fam Zheng
2015-01-30 2:49 ` [Qemu-devel] [PATCH v7 1/5] qemu-io: Account IO by aio_read and aio_write Fam Zheng
2015-01-30 2:49 ` [Qemu-devel] [PATCH v7 2/5] qtest: Add scripts/qtest.py Fam Zheng
2015-01-30 2:49 ` [Qemu-devel] [PATCH v7 3/5] qemu-iotests: Add VM method qtest() to iotests.py Fam Zheng
2015-01-30 2:49 ` [Qemu-devel] [PATCH v7 4/5] qemu-iotests: Allow caller to disable underscore convertion for qmp Fam Zheng
2015-01-30 2:49 ` [Qemu-devel] [PATCH v7 5/5] qemu-iotests: Add 093 for IO throttling Fam Zheng
2015-01-30 15:30 ` Max Reitz [this message]
2015-02-12 16:50 ` [Qemu-devel] [PATCH v7 0/5] block: Add a qemu-iotests case " Stefan Hajnoczi
2015-02-13 2:55 ` Fam Zheng
2015-02-13 10:01 ` Stefan Hajnoczi
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