linux-kernel - Re: [patch 0/7] improve memcg oom killer robustness v2

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Message-Id: <20130916172405.740B7FBD@pobox.sk>
Date:	Mon, 16 Sep 2013 17:24:05 +0200
From:	"azurIt" <azurit@...ox.sk>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	Michal Hocko <mhocko@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	<linux-mm@...ck.org>, <cgroups@...r.kernel.org>, <x86@...nel.org>,
	<linux-arch@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/7] improve memcg oom killer robustness v2

> CC: "Michal Hocko" <mhocko@...e.cz>, "Andrew Morton" <akpm@...ux-foundation.org>, "David Rientjes" <rientjes@...gle.com>, "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>, "KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>, linux-mm@...ck.org, cgroups@...r.kernel.org, x86@...nel.org, linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
>On Mon, Sep 16, 2013 at 05:05:43PM +0200, azurIt wrote:
>> > CC: "Johannes Weiner" <hannes@...xchg.org>, "Andrew Morton" <akpm@...ux-foundation.org>, "David Rientjes" <rientjes@...gle.com>, "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>, "KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>, linux-mm@...ck.org, cgroups@...r.kernel.org, x86@...nel.org, linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
>> >On Mon 16-09-13 16:13:16, azurIt wrote:
>> >[...]
>> >> >You can use sysrq+l via serial console to see tasks hogging the CPU or
>> >> >sysrq+t to see all the existing tasks.
>> >> 
>> >> 
>> >> Doesn't work here, it just prints 'l' resp. 't'.
>> >
>> >I am using telnet for accessing my serial consoles exported by
>> >the multiplicator or KVM and it can send sysrq via ctrl+t (Send
>> >Break). Check your serial console setup.
>> 
>> 
>> 
>> I'm using Raritan KVM and i created keyboard macro 'sysrq + l' resp. 'sysrq + t'. I'm also unable to use it on my local PC. Maybe it needs to be enabled somehow?
>
>Can you 'echo t >/proc/sysrq-trigger'?



# ls -la /proc/sysrq-trigger
ls: cannot access /proc/sysrq-trigger: No such file or directory
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