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From: Daniel Wagner <dwagner@suse.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
	James Smart <james.smart@broadcom.com>,
	Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>,
	Sagi Grimberg <sagi@grimberg.me>
Subject: Re: [PATCH 2/2] nvme-fc: Wait with a timeout for queue to freeze
Date: Tue, 6 Jul 2021 10:10:10 +0200	[thread overview]
Message-ID: <20210706081010.dqmg7bxik5gnym5k@beryllium.lan> (raw)
In-Reply-To: <YOQGRwLfLaFGqlVA@T590>

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On Tue, Jul 06, 2021 at 03:29:11PM +0800, Ming Lei wrote:
> > and this seems to confirm, no I/O in flight.
> 
> What is the output of the following command after the hang is triggered?
> 
> (cd /sys/kernel/debug/block/nvme0n1 && find . -type f -exec grep -aH . {} \;)
> 
> Suppose the hang disk is nvme0n1.

see attachement

> No, percpu_ref_is_zero() is fine to be called in atomic mode.

Okay, that is what I hoped for :)

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/sys/kernel/debug/block/nvme0c0n1# find . -type f -exec grep -aH . {} \;
./rqos/wbt/wb_background:4
./rqos/wbt/wb_normal:8
./rqos/wbt/unknown_cnt:0
./rqos/wbt/min_lat_nsec:2000000
./rqos/wbt/inflight:0: inflight 0
./rqos/wbt/inflight:1: inflight 0
./rqos/wbt/inflight:2: inflight 0
./rqos/wbt/id:0
./rqos/wbt/enabled:1
./rqos/wbt/curr_win_nsec:0
./hctx0/cpu39/completed:0 0
./hctx0/cpu39/merged:0
./hctx0/cpu39/dispatched:0 0
./hctx0/cpu38/completed:0 0
./hctx0/cpu38/merged:0
./hctx0/cpu38/dispatched:0 0
./hctx0/cpu37/completed:0 0
./hctx0/cpu37/merged:0
./hctx0/cpu37/dispatched:0 0
./hctx0/cpu36/completed:0 0
./hctx0/cpu36/merged:0
./hctx0/cpu36/dispatched:0 0
./hctx0/cpu35/completed:0 0
./hctx0/cpu35/merged:0
./hctx0/cpu35/dispatched:0 0
./hctx0/cpu34/completed:0 0
./hctx0/cpu34/merged:0
./hctx0/cpu34/dispatched:0 0
./hctx0/cpu33/completed:0 0
./hctx0/cpu33/merged:0
./hctx0/cpu33/dispatched:0 0
./hctx0/cpu32/completed:0 0
./hctx0/cpu32/merged:0
./hctx0/cpu32/dispatched:0 0
./hctx0/cpu31/completed:0 0
./hctx0/cpu31/merged:0
./hctx0/cpu31/dispatched:0 0
./hctx0/cpu30/completed:0 0
./hctx0/cpu30/merged:0
./hctx0/cpu30/dispatched:0 0
./hctx0/cpu29/completed:0 0
./hctx0/cpu29/merged:0
./hctx0/cpu29/dispatched:0 0
./hctx0/cpu28/completed:0 0
./hctx0/cpu28/merged:0
./hctx0/cpu28/dispatched:0 0
./hctx0/cpu27/completed:0 0
./hctx0/cpu27/merged:0
./hctx0/cpu27/dispatched:0 0
./hctx0/cpu26/completed:0 0
./hctx0/cpu26/merged:0
./hctx0/cpu26/dispatched:0 0
./hctx0/cpu25/completed:0 0
./hctx0/cpu25/merged:0
./hctx0/cpu25/dispatched:0 0
./hctx0/cpu24/completed:0 0
./hctx0/cpu24/merged:0
./hctx0/cpu24/dispatched:0 0
./hctx0/cpu23/completed:0 0
./hctx0/cpu23/merged:0
./hctx0/cpu23/dispatched:0 0
./hctx0/cpu22/completed:0 0
./hctx0/cpu22/merged:0
./hctx0/cpu22/dispatched:0 0
./hctx0/cpu21/completed:0 0
./hctx0/cpu21/merged:0
./hctx0/cpu21/dispatched:0 0
./hctx0/cpu20/completed:0 0
./hctx0/cpu20/merged:0
./hctx0/cpu20/dispatched:0 0
./hctx0/cpu19/completed:0 0
./hctx0/cpu19/merged:0
./hctx0/cpu19/dispatched:0 0
./hctx0/cpu18/completed:0 0
./hctx0/cpu18/merged:0
./hctx0/cpu18/dispatched:0 0
./hctx0/cpu17/completed:0 0
./hctx0/cpu17/merged:0
./hctx0/cpu17/dispatched:0 0
./hctx0/cpu16/completed:0 0
./hctx0/cpu16/merged:0
./hctx0/cpu16/dispatched:0 0
./hctx0/cpu15/completed:0 0
./hctx0/cpu15/merged:0
./hctx0/cpu15/dispatched:0 0
./hctx0/cpu14/completed:0 0
./hctx0/cpu14/merged:0
./hctx0/cpu14/dispatched:0 0
./hctx0/cpu13/completed:0 0
./hctx0/cpu13/merged:0
./hctx0/cpu13/dispatched:0 0
./hctx0/cpu12/completed:0 0
./hctx0/cpu12/merged:0
./hctx0/cpu12/dispatched:0 0
./hctx0/cpu11/completed:0 0
./hctx0/cpu11/merged:0
./hctx0/cpu11/dispatched:0 0
./hctx0/cpu10/completed:0 0
./hctx0/cpu10/merged:0
./hctx0/cpu10/dispatched:0 0
./hctx0/cpu9/completed:0 0
./hctx0/cpu9/merged:0
./hctx0/cpu9/dispatched:0 0
./hctx0/cpu8/completed:0 0
./hctx0/cpu8/merged:0
./hctx0/cpu8/dispatched:0 0
./hctx0/cpu7/completed:0 0
./hctx0/cpu7/merged:0
./hctx0/cpu7/dispatched:0 0
./hctx0/cpu6/completed:0 0
./hctx0/cpu6/merged:0
./hctx0/cpu6/dispatched:0 0
./hctx0/cpu5/completed:0 0
./hctx0/cpu5/merged:0
./hctx0/cpu5/dispatched:0 0
./hctx0/cpu4/completed:0 0
./hctx0/cpu4/merged:0
./hctx0/cpu4/dispatched:0 0
./hctx0/cpu3/completed:0 0
./hctx0/cpu3/merged:0
./hctx0/cpu3/dispatched:0 0
./hctx0/cpu2/completed:0 0
./hctx0/cpu2/merged:0
./hctx0/cpu2/dispatched:0 0
./hctx0/cpu1/completed:0 0
./hctx0/cpu1/merged:0
./hctx0/cpu1/dispatched:0 0
./hctx0/cpu0/completed:0 0
./hctx0/cpu0/merged:0
./hctx0/cpu0/dispatched:0 0
./hctx0/type:default
./hctx0/dispatch_busy:0
./hctx0/active:0
./hctx0/run:0
./hctx0/queued:0
./hctx0/dispatched:       0     0
./hctx0/dispatched:       1     0
./hctx0/dispatched:       2     0
./hctx0/dispatched:       4     0
./hctx0/dispatched:       8     0
./hctx0/dispatched:      16     0
./hctx0/dispatched:      32+    0
./hctx0/io_poll:considered=0
./hctx0/io_poll:invoked=0
./hctx0/io_poll:success=0
./hctx0/sched_tags_bitmap:00000000: 0000 0000 0000 0000
./hctx0/sched_tags:nr_tags=64
./hctx0/sched_tags:nr_reserved_tags=1
./hctx0/sched_tags:active_queues=0
./hctx0/sched_tags:bitmap_tags:
./hctx0/sched_tags:depth=63
./hctx0/sched_tags:busy=0
./hctx0/sched_tags:cleared=0
./hctx0/sched_tags:bits_per_word=8
./hctx0/sched_tags:map_nr=8
./hctx0/sched_tags:alloc_hint={28, 37, 21, 45, 61, 51, 42, 10, 43, 53, 40, 31, 17, 8, 28, 43, 47, 61, 51, 48, 53, 62, 15, 21, 52, 1, 2, 41, 50, 14, 24, 4, 58}
./hctx0/sched_tags:wake_batch=7
./hctx0/sched_tags:wake_index=0
./hctx0/sched_tags:ws_active=0
./hctx0/sched_tags:ws={
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:}
./hctx0/sched_tags:round_robin=0
./hctx0/sched_tags:min_shallow_depth=4294967295
./hctx0/sched_tags:breserved_tags:
./hctx0/sched_tags:depth=1
./hctx0/sched_tags:busy=0
./hctx0/sched_tags:cleared=0
./hctx0/sched_tags:bits_per_word=64
./hctx0/sched_tags:map_nr=1
./hctx0/sched_tags:alloc_hint={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
./hctx0/sched_tags:wake_batch=1
./hctx0/sched_tags:wake_index=0
./hctx0/sched_tags:ws_active=0
./hctx0/sched_tags:ws={
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:}
./hctx0/sched_tags:round_robin=0
./hctx0/sched_tags:min_shallow_depth=4294967295
./hctx0/tags_bitmap:00000000: 0000 0000
./hctx0/tags:nr_tags=32
./hctx0/tags:nr_reserved_tags=1
./hctx0/tags:active_queues=0
./hctx0/tags:bitmap_tags:
./hctx0/tags:depth=31
./hctx0/tags:busy=0
./hctx0/tags:cleared=0
./hctx0/tags:bits_per_word=4
./hctx0/tags:map_nr=8
./hctx0/tags:alloc_hint={12, 9, 9, 18, 27, 3, 7, 0, 28, 6, 28, 12, 21, 19, 1, 23, 27, 24, 6, 17, 15, 1, 10, 19, 27, 2, 24, 26, 30, 2, 26, 20, 18, 22, 19, 3, }
./hctx0/tags:wake_batch=3
./hctx0/tags:wake_index=0
./hctx0/tags:ws_active=0
./hctx0/tags:ws={
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:}
./hctx0/tags:round_robin=0
./hctx0/tags:min_shallow_depth=4294967295
./hctx0/tags:breserved_tags:
./hctx0/tags:depth=1
./hctx0/tags:busy=0
./hctx0/tags:cleared=1
./hctx0/tags:bits_per_word=64
./hctx0/tags:map_nr=1
./hctx0/tags:alloc_hint={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
./hctx0/tags:wake_batch=1
./hctx0/tags:wake_index=0
./hctx0/tags:ws_active=0
./hctx0/tags:ws={
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:}
./hctx0/tags:round_robin=0
./hctx0/tags:min_shallow_depth=4294967295
./hctx0/ctx_map:00000000: 0000 0000 00
./hctx0/flags:alloc_policy=FIFO SHOULD_MERGE|TAG_QUEUE_SHARED|4
./sched/starved:0
./sched/batching:0
./write_hints:hint0: 0
./write_hints:hint1: 0
./write_hints:hint2: 0
./write_hints:hint3: 0
./write_hints:hint4: 0
./state:SAME_COMP|NONROT|IO_STAT|INIT_DONE|STATS|REGISTERED|NOWAIT
./pm_only:0
./poll_stat:read  (512 Bytes): samples=0
./poll_stat:write (512 Bytes): samples=0
./poll_stat:read  (1024 Bytes): samples=0
./poll_stat:write (1024 Bytes): samples=0
./poll_stat:read  (2048 Bytes): samples=0
./poll_stat:write (2048 Bytes): samples=0
./poll_stat:read  (4096 Bytes): samples=0
./poll_stat:write (4096 Bytes): samples=0
./poll_stat:read  (8192 Bytes): samples=0
./poll_stat:write (8192 Bytes): samples=0
./poll_stat:read  (16384 Bytes): samples=0
./poll_stat:write (16384 Bytes): samples=0
./poll_stat:read  (32768 Bytes): samples=0
./poll_stat:write (32768 Bytes): samples=0
./poll_stat:read  (65536 Bytes): samples=0
./poll_stat:write (65536 Bytes): samples=0


/sys/kernel/debug/block/nvme0c0n2# find . -type f -exec grep -aH . {} \;
./rqos/wbt/wb_background:4
./rqos/wbt/wb_normal:8
./rqos/wbt/unknown_cnt:0
./rqos/wbt/min_lat_nsec:2000000
./rqos/wbt/inflight:0: inflight 0
./rqos/wbt/inflight:1: inflight 0
./rqos/wbt/inflight:2: inflight 0
./rqos/wbt/id:0
./rqos/wbt/enabled:1
./rqos/wbt/curr_win_nsec:0
./hctx0/cpu39/completed:0 0
./hctx0/cpu39/merged:0
./hctx0/cpu39/dispatched:0 0
./hctx0/cpu38/completed:0 0
./hctx0/cpu38/merged:0
./hctx0/cpu38/dispatched:0 0
./hctx0/cpu37/completed:0 0
./hctx0/cpu37/merged:0
./hctx0/cpu37/dispatched:0 0
./hctx0/cpu36/completed:0 0
./hctx0/cpu36/merged:0
./hctx0/cpu36/dispatched:0 0
./hctx0/cpu35/completed:0 0
./hctx0/cpu35/merged:0
./hctx0/cpu35/dispatched:0 0
./hctx0/cpu34/completed:0 0
./hctx0/cpu34/merged:0
./hctx0/cpu34/dispatched:0 0
./hctx0/cpu33/completed:0 0
./hctx0/cpu33/merged:0
./hctx0/cpu33/dispatched:0 0
./hctx0/cpu32/completed:0 0
./hctx0/cpu32/merged:0
./hctx0/cpu32/dispatched:0 0
./hctx0/cpu31/completed:0 0
./hctx0/cpu31/merged:0
./hctx0/cpu31/dispatched:0 0
./hctx0/cpu30/completed:0 0
./hctx0/cpu30/merged:0
./hctx0/cpu30/dispatched:0 0
./hctx0/cpu29/completed:0 0
./hctx0/cpu29/merged:0
./hctx0/cpu29/dispatched:0 0
./hctx0/cpu28/completed:0 0
./hctx0/cpu28/merged:0
./hctx0/cpu28/dispatched:0 0
./hctx0/cpu27/completed:0 0
./hctx0/cpu27/merged:0
./hctx0/cpu27/dispatched:0 0
./hctx0/cpu26/completed:0 0
./hctx0/cpu26/merged:0
./hctx0/cpu26/dispatched:0 0
./hctx0/cpu25/completed:0 0
./hctx0/cpu25/merged:0
./hctx0/cpu25/dispatched:0 0
./hctx0/cpu24/completed:0 0
./hctx0/cpu24/merged:0
./hctx0/cpu24/dispatched:0 0
./hctx0/cpu23/completed:0 0
./hctx0/cpu23/merged:0
./hctx0/cpu23/dispatched:0 0
./hctx0/cpu22/completed:0 0
./hctx0/cpu22/merged:0
./hctx0/cpu22/dispatched:0 0
./hctx0/cpu21/completed:0 0
./hctx0/cpu21/merged:0
./hctx0/cpu21/dispatched:0 0
./hctx0/cpu20/completed:0 0
./hctx0/cpu20/merged:0
./hctx0/cpu20/dispatched:0 0
./hctx0/cpu19/completed:0 0
./hctx0/cpu19/merged:0
./hctx0/cpu19/dispatched:0 0
./hctx0/cpu18/completed:0 0
./hctx0/cpu18/merged:0
./hctx0/cpu18/dispatched:0 0
./hctx0/cpu17/completed:0 0
./hctx0/cpu17/merged:0
./hctx0/cpu17/dispatched:0 0
./hctx0/cpu16/completed:0 0
./hctx0/cpu16/merged:0
./hctx0/cpu16/dispatched:0 0
./hctx0/cpu15/completed:0 0
./hctx0/cpu15/merged:0
./hctx0/cpu15/dispatched:0 0
./hctx0/cpu14/completed:0 0
./hctx0/cpu14/merged:0
./hctx0/cpu14/dispatched:0 0
./hctx0/cpu13/completed:0 0
./hctx0/cpu13/merged:0
./hctx0/cpu13/dispatched:0 0
./hctx0/cpu12/completed:0 0
./hctx0/cpu12/merged:0
./hctx0/cpu12/dispatched:0 0
./hctx0/cpu11/completed:0 0
./hctx0/cpu11/merged:0
./hctx0/cpu11/dispatched:0 0
./hctx0/cpu10/completed:0 0
./hctx0/cpu10/merged:0
./hctx0/cpu10/dispatched:0 0
./hctx0/cpu9/completed:0 0
./hctx0/cpu9/merged:0
./hctx0/cpu9/dispatched:0 0
./hctx0/cpu8/completed:0 0
./hctx0/cpu8/merged:0
./hctx0/cpu8/dispatched:0 0
./hctx0/cpu7/completed:0 0
./hctx0/cpu7/merged:0
./hctx0/cpu7/dispatched:0 0
./hctx0/cpu6/completed:0 0
./hctx0/cpu6/merged:0
./hctx0/cpu6/dispatched:0 0
./hctx0/cpu5/completed:0 0
./hctx0/cpu5/merged:0
./hctx0/cpu5/dispatched:0 0
./hctx0/cpu4/completed:0 0
./hctx0/cpu4/merged:0
./hctx0/cpu4/dispatched:0 0
./hctx0/cpu3/completed:0 0
./hctx0/cpu3/merged:0
./hctx0/cpu3/dispatched:0 0
./hctx0/cpu2/completed:0 0
./hctx0/cpu2/merged:0
./hctx0/cpu2/dispatched:0 0
./hctx0/cpu1/completed:0 0
./hctx0/cpu1/merged:0
./hctx0/cpu1/dispatched:0 0
./hctx0/cpu0/completed:0 0
./hctx0/cpu0/merged:0
./hctx0/cpu0/dispatched:0 0
./hctx0/type:default
./hctx0/dispatch_busy:0
./hctx0/active:0
./hctx0/run:0
./hctx0/queued:0
./hctx0/dispatched:       0     0
./hctx0/dispatched:       1     0
./hctx0/dispatched:       2     0
./hctx0/dispatched:       4     0
./hctx0/dispatched:       8     0
./hctx0/dispatched:      16     0
./hctx0/dispatched:      32+    0
./hctx0/io_poll:considered=0
./hctx0/io_poll:invoked=0
./hctx0/io_poll:success=0
./hctx0/sched_tags_bitmap:00000000: 0000 0000 0000 0000
./hctx0/sched_tags:nr_tags=64
./hctx0/sched_tags:nr_reserved_tags=1
./hctx0/sched_tags:active_queues=0
./hctx0/sched_tags:bitmap_tags:
./hctx0/sched_tags:depth=63
./hctx0/sched_tags:busy=0
./hctx0/sched_tags:cleared=0
./hctx0/sched_tags:bits_per_word=8
./hctx0/sched_tags:map_nr=8
./hctx0/sched_tags:alloc_hint={7, 2, 30, 8, 28, 25, 10, 60, 21, 58, 59, 43, 12, 22, 1, 0, 37, 7, 8, 28, 10, 53, 6, 28, 16, 47, 11, 29, 28, 12, 21, 59, 37, 25}
./hctx0/sched_tags:wake_batch=7
./hctx0/sched_tags:wake_index=0
./hctx0/sched_tags:ws_active=0
./hctx0/sched_tags:ws={
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=7, .wait=inactive},
./hctx0/sched_tags:}
./hctx0/sched_tags:round_robin=0
./hctx0/sched_tags:min_shallow_depth=4294967295
./hctx0/sched_tags:breserved_tags:
./hctx0/sched_tags:depth=1
./hctx0/sched_tags:busy=0
./hctx0/sched_tags:cleared=0
./hctx0/sched_tags:bits_per_word=64
./hctx0/sched_tags:map_nr=1
./hctx0/sched_tags:alloc_hint={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
./hctx0/sched_tags:wake_batch=1
./hctx0/sched_tags:wake_index=0
./hctx0/sched_tags:ws_active=0
./hctx0/sched_tags:ws={
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:     {.wait_cnt=1, .wait=inactive},
./hctx0/sched_tags:}
./hctx0/sched_tags:round_robin=0
./hctx0/sched_tags:min_shallow_depth=4294967295
./hctx0/tags_bitmap:00000000: 0000 0000
./hctx0/tags:nr_tags=32
./hctx0/tags:nr_reserved_tags=1
./hctx0/tags:active_queues=0
./hctx0/tags:bitmap_tags:
./hctx0/tags:depth=31
./hctx0/tags:busy=0
./hctx0/tags:cleared=0
./hctx0/tags:bits_per_word=4
./hctx0/tags:map_nr=8
./hctx0/tags:alloc_hint={12, 9, 9, 18, 27, 3, 7, 0, 28, 6, 28, 12, 21, 19, 1, 23, 27, 24, 6, 17, 15, 1, 10, 19, 27, 2, 24, 26, 30, 2, 26, 20, 18, 22, 19, 3, }
./hctx0/tags:wake_batch=3
./hctx0/tags:wake_index=0
./hctx0/tags:ws_active=0
./hctx0/tags:ws={
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:   {.wait_cnt=3, .wait=inactive},
./hctx0/tags:}
./hctx0/tags:round_robin=0
./hctx0/tags:min_shallow_depth=4294967295
./hctx0/tags:breserved_tags:
./hctx0/tags:depth=1
./hctx0/tags:busy=0
./hctx0/tags:cleared=1
./hctx0/tags:bits_per_word=64
./hctx0/tags:map_nr=1
./hctx0/tags:alloc_hint={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
./hctx0/tags:wake_batch=1
./hctx0/tags:wake_index=0
./hctx0/tags:ws_active=0
./hctx0/tags:ws={
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:   {.wait_cnt=1, .wait=inactive},
./hctx0/tags:}
./hctx0/tags:round_robin=0
./hctx0/tags:min_shallow_depth=4294967295
./hctx0/ctx_map:00000000: 0000 0000 00
./hctx0/flags:alloc_policy=FIFO SHOULD_MERGE|TAG_QUEUE_SHARED|4
./sched/starved:0
./sched/batching:0
./write_hints:hint0: 0
./write_hints:hint1: 0
./write_hints:hint2: 0
./write_hints:hint3: 0
./write_hints:hint4: 0
./state:SAME_COMP|NONROT|IO_STAT|INIT_DONE|STATS|REGISTERED|NOWAIT
./pm_only:0
./poll_stat:read  (512 Bytes): samples=0
./poll_stat:write (512 Bytes): samples=0
./poll_stat:read  (1024 Bytes): samples=0
./poll_stat:write (1024 Bytes): samples=0
./poll_stat:read  (2048 Bytes): samples=0
./poll_stat:write (2048 Bytes): samples=0
./poll_stat:read  (4096 Bytes): samples=0
./poll_stat:write (4096 Bytes): samples=0
./poll_stat:read  (8192 Bytes): samples=0
./poll_stat:write (8192 Bytes): samples=0
./poll_stat:read  (16384 Bytes): samples=0
./poll_stat:write (16384 Bytes): samples=0
./poll_stat:read  (32768 Bytes): samples=0
./poll_stat:write (32768 Bytes): samples=0
./poll_stat:read  (65536 Bytes): samples=0
./poll_stat:write (65536 Bytes): samples=0


[-- Attachment #3: Type: text/plain, Size: 158 bytes --]

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  reply	other threads:[~2021-07-06  8:10 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-25 10:16 [PATCH 0/2] Handle update hardware queues and queue freeze more carefully Daniel Wagner
2021-06-25 10:16 ` [PATCH 1/2] nvme-fc: Update hardware queues before using them Daniel Wagner
2021-06-27 13:47   ` James Smart
2021-06-29  1:32   ` Ming Lei
2021-06-29 12:31   ` Hannes Reinecke
2021-06-25 10:16 ` [PATCH 2/2] nvme-fc: Wait with a timeout for queue to freeze Daniel Wagner
2021-06-27 14:04   ` James Smart
2021-06-29  1:39   ` Ming Lei
2021-06-29  7:48     ` Daniel Wagner
2021-07-05 16:34     ` Daniel Wagner
2021-07-06  7:29       ` Ming Lei
2021-07-06  8:10         ` Daniel Wagner [this message]
2021-07-06  8:45           ` Ming Lei
2021-07-06  8:59             ` Daniel Wagner
2021-07-06 12:21               ` Daniel Wagner
2021-07-07  2:46                 ` Ming Lei
2021-06-29 12:31   ` Hannes Reinecke
2021-06-25 12:21 ` [PATCH 0/2] Handle update hardware queues and queue freeze more carefully Daniel Wagner
2021-06-25 13:00   ` Ming Lei
2021-06-29  1:31     ` Ming Lei

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