From: jesper@krogh.cc
To: Andrey Korolyov <andrey@xdel.ru>
Cc: jesper@krogh.cc, linux-mm@kvack.org
Subject: Re: High system load and 3TB of memory.
Date: Sat, 14 Mar 2015 18:25:19 +0100 [thread overview]
Message-ID: <a0dcd8d7307e313474d4d721c76bb5a9.squirrel@shrek.krogh.cc> (raw)
In-Reply-To: <CABYiri81_RAtJizfpOdNPc6m9_Q2u0O35NX0ZhO1cxFpm866HQ@mail.gmail.com>
> On Sat, Mar 14, 2015 at 8:05 PM, <jesper@krogh.cc> wrote:
>> Hi
>> I have a 3.13 (ubuntu LTS) server with 3TB of memory and under certain
>> load
>> conditions it can spiral off to 80+% system load. Per recommendation on
>> IRC
>> yesterday I have captured 2 perf reports (I'm new to perf, so I'm not
>> sure they tell precisely whats needed.
>>
>> Bad situation (high sysload 80%+)
> Hi Jesper, please take a look on
> http://marc.info/?l=linux-mm&m=141605213522925&w=2, there is a long
> and unfinished discussion as it seems very problematic to make a
> deterministic reproduction of the bug in our environments. If you can
> observe same lockups with more ease, it`ll help a lot in the issue
> pinning and fixing.
Hi Andrey.
Yes it looks indeed familiar. I can do a fair amount of testing and our
normal production load triggers the problem 6-10 times per day and I'm
willing to garther data to help move forward. What do you suggest is next?
Jesper
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next prev parent reply other threads:[~2015-03-14 17:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-14 17:05 jesper
2015-03-14 17:14 ` Andrey Korolyov
2015-03-14 17:25 ` jesper [this message]
2015-03-14 17:33 ` Andrey Korolyov
2015-03-18 14:15 ` Vlastimil Babka
2015-03-18 15:14 ` Jesper Krogh
2015-03-19 12:51 ` Joonsoo Kim
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