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

[Michal Hocko]

On Mon 16-09-13 17:05:43, azurIt wrote:
> > CC: "Johannes Weiner" <hannes@xxxxxxxxxxx>, "Andrew Morton" <akpm@xxxxxxxxxxxxxxxxxxxx>, "David Rientjes" <rientjes@xxxxxxxxxx>, "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@xxxxxxxxxxxxxx>, "KOSAKI Motohiro" <kosaki.motohiro@xxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
> >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?

Probably yes. echo 1 > /proc/sys/kernel/sysrq should enable all sysrq
commands. You can select also some of them (have a look at
Documentation/sysrq.txt for more information)
-- 
Michal Hocko
SUSE Labs
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