From: "jianchao.wang" <jianchao.w.wang@oracle.com>
To: Paolo Valente <paolo.valente@linaro.org>
Cc: linux-block <linux-block@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>, Shaohua Li <shli@fb.com>,
Mark Brown <broonie@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: Re: testing io.low limit for blk-throttle
Date: Mon, 23 Apr 2018 14:35:04 +0800 [thread overview]
Message-ID: <5921aa86-37d9-a85d-18da-ff363ff83cf2@oracle.com> (raw)
In-Reply-To: <94F005D5-EC8B-4830-AD5B-489117F7DC60@linaro.org>
Hi Paolo
On 04/23/2018 01:32 PM, Paolo Valente wrote:
> Thanks for sharing this fix. I tried it too, but nothing changes in
> my test :(>
That's really sad.
> At this point, my doubt is still: am I getting io.low limit right? I
> understand that an I/O-bound group should be guaranteed a rbps at
> least equal to the rbps set with io.low for that group (of course,
> provided that the sum of io.low limits is lower than the rate at which
> the device serves all the I/O generated by the groups). Is this
> really what io.low shall guarantee?
I agree with your point about this even if I'm not qualified to judge it.
On the other hand, could you share your test case and blk-throl config here ?
Thanks
Jianchao
next prev parent reply other threads:[~2018-04-23 6:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-22 9:23 testing io.low limit for blk-throttle Paolo Valente
2018-04-22 13:29 ` jianchao.wang
2018-04-22 15:53 ` Paolo Valente
2018-04-23 2:19 ` jianchao.wang
2018-04-23 5:32 ` Paolo Valente
2018-04-23 6:35 ` jianchao.wang [this message]
2018-04-23 7:37 ` Paolo Valente
2018-04-23 8:26 ` jianchao.wang
2018-04-23 6:05 ` Joseph Qi
2018-04-23 7:35 ` Paolo Valente
2018-04-23 9:01 ` Joseph Qi
2018-04-24 12:12 ` Paolo Valente
2018-04-25 12:13 ` Joseph Qi
2018-04-26 17:27 ` Paolo Valente
2018-04-27 3:27 ` Joseph Qi
2018-04-27 5:14 ` Paolo Valente
2018-04-26 18:32 ` Tejun Heo
2018-04-27 2:09 ` jianchao.wang
2018-04-27 2:40 ` Joseph Qi
2018-05-03 16:35 ` Paolo Valente
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