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From: Sagi Grimberg <sagi@grimberg.me>
To: Yi Zhang <yi.zhang@redhat.com>, Max Gurtovoy <maxg@mellanox.com>
Cc: "open list:NVM EXPRESS DRIVER" <linux-nvme@lists.infradead.org>,
	RDMA mailing list <linux-rdma@vger.kernel.org>
Subject: Re: [bug report] NVMe/IB: reset_controller need more than 1min
Date: Tue, 14 Dec 2021 12:39:28 +0200	[thread overview]
Message-ID: <c6d43a10-44bc-e73a-8836-d75367df049b@grimberg.me> (raw)
In-Reply-To: <CAHj4cs9EazUmtbjPKp5TXO4kRPcSShiYbhmsHwfh7SOTQAeoyw@mail.gmail.com>


>>> Hi Sagi
>>> It is still reproducible with the change, here is the log:
>>>
>>> # time nvme reset /dev/nvme0
>>>
>>> real    0m12.973s
>>> user    0m0.000s
>>> sys     0m0.006s
>>> # time nvme reset /dev/nvme0
>>>
>>> real    1m15.606s
>>> user    0m0.000s
>>> sys     0m0.007s
>>
>> Does it speed up if you use less queues? (i.e. connect with -i 4) ?
> Yes, with -i 4, it has stablee 1.3s
> # time nvme reset /dev/nvme0

So it appears that destroying a qp takes a long time on
IB for some reason...

> real 0m1.225s
> user 0m0.000s
> sys 0m0.007s
> 
>>
>>>
>>> # dmesg | grep nvme
>>> [  900.634877] nvme nvme0: resetting controller
>>> [  909.026958] nvme nvme0: creating 40 I/O queues.
>>> [  913.604297] nvme nvme0: mapped 40/0/0 default/read/poll queues.
>>> [  917.600993] nvme nvme0: resetting controller
>>> [  988.562230] nvme nvme0: I/O 2 QID 0 timeout
>>> [  988.567607] nvme nvme0: Property Set error: 881, offset 0x14
>>> [  988.608181] nvme nvme0: creating 40 I/O queues.
>>> [  993.203495] nvme nvme0: mapped 40/0/0 default/read/poll queues.
>>>
>>> BTW, this issue cannot be reproduced on my NVME/ROCE environment.
>>
>> Then I think that we need the rdma folks to help here...

Max?

  reply	other threads:[~2021-12-14 10:39 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-21 16:12 [bug report] NVMe/IB: reset_controller need more than 1min Yi Zhang
2021-05-21 16:12 ` Yi Zhang
2021-05-21 18:00 ` Sagi Grimberg
2021-05-21 18:00   ` Sagi Grimberg
2021-05-22  4:27   ` Yi Zhang
2021-05-22  4:27     ` Yi Zhang
2021-06-23 10:01     ` Yi Zhang
2021-06-23 10:01       ` Yi Zhang
2021-06-23 21:32       ` Sagi Grimberg
2021-06-23 21:32         ` Sagi Grimberg
2021-06-24 16:14         ` Yi Zhang
2021-06-24 16:14           ` Yi Zhang
2021-12-11  3:01           ` Yi Zhang
2021-12-12  9:45             ` Sagi Grimberg
2021-12-13  6:12               ` Yi Zhang
2021-12-13  9:04                 ` Sagi Grimberg
2021-12-13 17:05                   ` Yi Zhang
2021-12-14 10:39                     ` Sagi Grimberg [this message]
2021-12-14 12:00                       ` Max Gurtovoy
2021-12-15  1:15                         ` Yi Zhang
2021-12-15 12:10                           ` Max Gurtovoy
2021-12-16  2:18                             ` Yi Zhang
2021-12-16 13:21                               ` Max Gurtovoy
2021-12-16 16:32                                 ` Yi Zhang
2021-12-16 17:33                                   ` Haakon Bugge
2021-12-17  7:03                                     ` Yi Zhang
2021-12-17 11:19                                       ` Haakon Bugge
2022-02-14  9:47                                         ` Yi Zhang
2022-02-14 11:00                                           ` Chaitanya Kulkarni
2022-02-14 11:32                                           ` Sagi Grimberg
2022-02-14 12:11                                             ` Max Gurtovoy
2022-02-15 13:52                                               ` Yi Zhang
2022-02-15 14:30                                                 ` Max Gurtovoy
2022-02-21 10:00                                                   ` Yi Zhang
2022-02-23 10:04                                                     ` Max Gurtovoy
2022-02-23 10:30                                                       ` Sagi Grimberg
2022-02-23 11:20                                                         ` Max Gurtovoy
2022-03-01  0:06                                                       ` Yi Zhang
2022-03-16 15:16                                                         ` Sagi Grimberg
2022-03-19  7:29                                                           ` Yi Zhang
2022-03-20 10:50                                                             ` Max Gurtovoy
2022-03-20 13:03                                                               ` Sagi Grimberg
2022-03-20 15:11                                                                 ` Max Gurtovoy
2022-03-21  9:28                                                                   ` Sagi Grimberg
2022-03-21 12:11                                                                     ` Max Gurtovoy

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