From: Tejun Heo <tj@kernel.org>
To: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: akpm@linux-foundation.org, willy@infradead.org, jack@suse.cz,
bfoster@redhat.com, dsterba@suse.com, mjguzik@gmail.com,
dhowells@redhat.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v4 3/4] writeback: add wb_monitor.py script to monitor writeback info on bdi
Date: Mon, 22 Apr 2024 08:32:52 -1000 [thread overview]
Message-ID: <ZiatVDpNb59kmT9V@slm.duckdns.org> (raw)
In-Reply-To: <20240422164808.13627-4-shikemeng@huaweicloud.com>
On Tue, Apr 23, 2024 at 12:48:07AM +0800, Kemeng Shi wrote:
> Add wb_monitor.py script to monitor writeback information on backing dev
> which makes it easier and more convenient to observe writeback behaviors
> of running system.
>
> The wb_monitor.py script is written based on wq_monitor.py.
>
> Following domain hierarchy is tested:
> global domain (320G)
> / \
> cgroup domain1(10G) cgroup domain2(10G)
> | |
> bdi wb1 wb2
>
> The wb_monitor.py script output is as following:
> ./wb_monitor.py 252:16 -c
> writeback reclaimable dirtied written avg_bw
> 252:16_1 0 0 0 0 102400
> 252:16_4284 672 820064 9230368 8410304 685612
> 252:16_4325 896 819840 10491264 9671648 652348
> 252:16 1568 1639904 19721632 18081952 1440360
>
> writeback reclaimable dirtied written avg_bw
> 252:16_1 0 0 0 0 102400
> 252:16_4284 672 820064 9230368 8410304 685612
> 252:16_4325 896 819840 10491264 9671648 652348
> 252:16 1568 1639904 19721632 18081952 1440360
> ...
>
> Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
> Suggested-by: Tejun Heo <tj@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
--
tejun
next prev parent reply other threads:[~2024-04-22 18:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 16:48 [PATCH v4 0/4] Improve visibility of writeback Kemeng Shi
2024-04-22 15:04 ` Matthew Wilcox
2024-04-22 16:48 ` [PATCH v4 1/4] writeback: collect stats of all wb of bdi in bdi_debug_stats_show Kemeng Shi
2024-04-22 18:23 ` Tejun Heo
2024-04-22 16:48 ` [PATCH v4 2/4] writeback: support retrieving per group debug writeback stats of bdi Kemeng Shi
2024-04-22 18:32 ` Tejun Heo
2024-04-23 1:15 ` Kemeng Shi
2024-04-23 0:44 ` SeongJae Park
2024-04-23 1:29 ` Kemeng Shi
2024-04-22 16:48 ` [PATCH v4 3/4] writeback: add wb_monitor.py script to monitor writeback info on bdi Kemeng Shi
2024-04-22 18:32 ` Tejun Heo [this message]
2024-04-22 16:48 ` [PATCH v4 4/4] writeback: rename nr_reclaimable to nr_dirty in balance_dirty_pages Kemeng Shi
2024-04-22 18:33 ` Tejun Heo
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