From: Michal Hocko <mhocko@kernel.org>
To: peter enderborg <peter.enderborg@sonymobile.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Cong Wang <xiyou.wangcong@gmail.com>,
Dave Hansen <dave.hansen@intel.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Mel Gorman <mgorman@suse.de>, Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Vlastimil Babka <vbabka@suse.cz>,
"yuwang.yuwang" <yuwang.yuwang@alibaba-inc.com>
Subject: Re: [PATCH] mm: don't warn about allocations which stall for too long
Date: Thu, 9 Nov 2017 09:52:49 +0100 [thread overview]
Message-ID: <20171109085249.guihvx5tzm77u3qk@dhcp22.suse.cz> (raw)
In-Reply-To: <91bdbdea-3f33-b7c0-8345-d0fa8c7f1cf1@sonymobile.com>
[Please try to trim the context you are replying to]
On Wed 08-11-17 11:30:23, peter enderborg wrote:
[...]
> What about the idea to keep the function, but instead of printing only do a trace event.
I am not sure. I would rather see a tracepoint to mark the allocator
entry. This would allow both 1) measuring the allocation latency (to
compare it to the trace_mm_page_alloc and 2) check for stalls with
arbitrary user defined timeout (just print all allocations which haven't
passed trace_mm_page_alloc for the given amount of time).
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-11-09 8:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-26 11:28 [PATCH] mm: don't warn about allocations which stall for too long Tetsuo Handa
2017-10-26 11:41 ` Michal Hocko
2017-11-08 10:30 ` peter enderborg
2017-11-09 8:52 ` Michal Hocko [this message]
2017-11-09 9:34 ` peter enderborg
2017-11-09 10:09 ` Michal Hocko
2017-11-09 10:19 ` Tetsuo Handa
2017-10-26 14:37 ` Johannes Weiner
2017-10-31 19:32 ` Steven Rostedt
2017-11-01 8:30 ` Vlastimil Babka
2017-11-01 13:38 ` Petr Mladek
2017-11-01 15:36 ` Steven Rostedt
2017-11-02 11:46 ` Petr Mladek
2017-11-02 14:49 ` Steven Rostedt
2017-11-01 15:33 ` Steven Rostedt
2017-11-01 17:42 ` Vlastimil Babka
2017-11-01 17:54 ` Steven Rostedt
2017-11-02 8:53 ` Sergey Senozhatsky
2017-11-02 9:14 ` Sergey Senozhatsky
2017-11-02 14:55 ` Steven Rostedt
2017-11-02 12:55 ` Michal Hocko
2017-11-02 15:56 ` Steven Rostedt
2017-11-02 17:06 ` [PATCH v2] printk: Add console owner and waiter logic to load balance console writes Steven Rostedt
2017-11-02 17:10 ` Steven Rostedt
2017-11-02 17:38 ` Steven Rostedt
2017-11-03 10:19 ` Jan Kara
2017-11-03 11:18 ` Steven Rostedt
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