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Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq

From Bart Van Assche <bart.vanassche@sandisk.com>
Newsgroups linux.kernel
Subject Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq
Date 2017-02-10 19:30 +0100
Message-ID <t9o7g-73R-11@gated-at.bofh.it> (permalink)
References <t8hKx-5Nk-1@gated-at.bofh.it> <t9myt-5Vq-11@gated-at.bofh.it> <t9mIa-5ZB-15@gated-at.bofh.it>
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On 02/10/2017 08:49 AM, Paolo Valente wrote:
>> $ grep '^C.*_MQ_' .config
>> CONFIG_BLK_MQ_PCI=y
>> CONFIG_MQ_IOSCHED_BFQ=y
>> CONFIG_MQ_IOSCHED_DEADLINE=y
>> CONFIG_MQ_IOSCHED_NONE=y
>> CONFIG_DEFAULT_MQ_BFQ_MQ=y
>> CONFIG_DEFAULT_MQ_IOSCHED="bfq-mq"
>> CONFIG_SCSI_MQ_DEFAULT=y
>> CONFIG_DM_MQ_DEFAULT=y
>>
> 
> Could you reconfigure with none or mq-deadline as default, check
> whether the system boots, and, it it does, switch manually to bfq-mq,
> check what happens, and, in the likely case of a failure, try to get
> the oops?

Hello Paolo,

I just finished performing that test with the following kernel config:
$ grep '^C.*_MQ_' .config
CONFIG_BLK_MQ_PCI=y
CONFIG_MQ_IOSCHED_BFQ=y
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_NONE=y
CONFIG_DEFAULT_MQ_DEADLINE=y
CONFIG_DEFAULT_MQ_IOSCHED="mq-deadline"
CONFIG_SCSI_MQ_DEFAULT=y
CONFIG_DM_MQ_DEFAULT=y

After the system came up I logged in, switched to the bfq-mq scheduler
and ran several I/O tests against the boot disk. Sorry but nothing
interesting appeared in the kernel log.

Bart.

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Thread

[WIP PATCHSET 0/4] WIP branch for bfq-mq Paolo Valente <paolo.valente@linaro.org> - 2017-02-07 18:30 +0100
  [WIP PATCHSET 1/4] blk-mq: pass bio to blk_mq_sched_get_rq_priv Paolo Valente <paolo.valente@linaro.org> - 2017-02-07 18:30 +0100
    Re: [WIP PATCHSET 1/4] blk-mq: pass bio to blk_mq_sched_get_rq_priv Jens Axboe <axboe@kernel.dk> - 2017-02-10 17:20 +0100
  [WIP PATCHSET 3/4] Embed bfq-ioc.c and add locking on request queue Paolo Valente <paolo.valente@linaro.org> - 2017-02-07 18:30 +0100
  [WIP PATCHSET 2/4] Move thinktime from bic to bfqq Paolo Valente <paolo.valente@linaro.org> - 2017-02-07 18:30 +0100
  Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Bart Van Assche <Bart.VanAssche@sandisk.com> - 2017-02-10 17:20 +0100
    Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Paolo Valente <paolo.valente@linaro.org> - 2017-02-10 18:00 +0100
  Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Bart Van Assche <Bart.VanAssche@sandisk.com> - 2017-02-10 17:50 +0100
    Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Paolo Valente <paolo.valente@linaro.org> - 2017-02-10 18:00 +0100
      Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Bart Van Assche <bart.vanassche@sandisk.com> - 2017-02-10 19:30 +0100
        Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Paolo Valente <paolo.valente@linaro.org> - 2017-02-10 21:00 +0100
  Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Paolo Valente <paolo.valente@linaro.org> - 2017-02-10 20:40 +0100
  Re: [WIP PATCHSET 0/4] WIP branch for bfq-mq Bart Van Assche <Bart.VanAssche@sandisk.com> - 2017-02-10 20:40 +0100

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