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Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot

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  Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot Marco Tamassia <nazgul17@gmail.com> - 2016-04-14 03:00 +0200
    Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot Ben Hutchings <ben@decadent.org.uk> - 2016-04-14 04:10 +0200
      Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot Marco Tamassia <nazgul17@gmail.com> - 2016-04-14 05:20 +0200
        Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot Ben Hutchings <ben@decadent.org.uk> - 2016-04-14 13:30 +0200
    Processed: Re: Bug#820955: linux: When memory all used, cursor  lags, keyboard does not respond, I am forced to reboot owner@bugs.debian.org (Debian Bug Tracking System) - 2016-04-14 04:10 +0200

#53596 — Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot

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Source: linux
Severity: important

Dear Maintainer,

I was running some heavy computations, until cursor started severely
lagging,
keyboard stopped responding, HDD usage led was perpetually on (swap is
turned
off) and I had to hit the power button.

Notice this happened to me multiple times through the years on different
machines (including ana Asus x53Sv laptop and a HP Z230 desktop) and
different
distributions (Debian, Ubuntu, Kubuntu and Mint).

When this happened in the past, System Monitor showed that I was using 100%
of
memory. I even turned swap off with no effect on the issue.

I am confident I can replicate this if necessary. I am happy to provide
additional
information.

I believe the bug is the same reported here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555351
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356
A guy there states that he has been experiencing this problem forever (he
started
using linux in 1999, although he does not report when he first experienced
the
issue), and this is consistent with my experience (I started using it in
2007,
although I cannot remember when I first experienced the issue).



-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

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#53597

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Control: tag -1 moreinfo

Why have you deleted the system information from your report?

How much RAM is in this system?

Have you changed any of the VM sysctl settings?

Does the 'OOM killer' run when you fill up memory?  Which processes
does it kill?

I would generally recommend having a small swap partition, though it
won't help if processes are actively using more data than there is RAM
in the system.

Ben.

-- 
Ben Hutchings
In a hierarchy, every employee tends to rise to his level of incompetence.

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#53599

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Hi Ben,

thanks for your prompt reply. I responded inline, see below. I am happy to
help.

Marco

On 14 April 2016 at 11:58, Ben Hutchings <ben@decadent.org.uk> wrote:

> Control: tag -1 moreinfo
>
> Why have you deleted the system information from your report?
>
I am behind a proxy, so I can't send the report directly with reportbug. I
therefore selected the option to save in a temporary file and just
copy-pasted the content in my previous email.
If you could instruct me on how to generate a report with all the info you
need, I will happily create it.

>
> How much RAM is in this system?
>
16GB.

>
> Have you changed any of the VM sysctl settings?
>
I have no clue what that is, so probably not, unless I did it indirectly,
without knowing it.

>
> Does the 'OOM killer' run when you fill up memory?  Which processes
> does it kill?
>
Can't tell, because I am prevented from inputting anything.

>
> I would generally recommend having a small swap partition, though it
> won't help if processes are actively using more data than there is RAM
> in the system.
>
> Ben.
>
> --
> Ben Hutchings
> In a hierarchy, every employee tends to rise to his level of incompetence.
>



-- 
Marco

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#53605

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On Thu, 2016-04-14 at 13:08 +1000, Marco Tamassia wrote:
> Hi Ben,
> 
> thanks for your prompt reply. I responded inline, see below. I am happy to
> help.
> 
> Marco
> 
> On 14 April 2016 at 11:58, Ben Hutchings <ben@decadent.org.uk> wrote:
> 
> > 
> > Control: tag -1 moreinfo
> > 
> > Why have you deleted the system information from your report?
> > 
> I am behind a proxy, so I can't send the report directly with reportbug. I
> therefore selected the option to save in a temporary file and just
> copy-pasted the content in my previous email.
> If you could instruct me on how to generate a report with all the info you
> need, I will happily create it.

'reportbug kernel' or 'reporting linux-image-$(uname -r)' would
generate a report including system information.

[...]
> > Does the 'OOM killer' run when you fill up memory?  Which processes
> > does it kill?
> > 
> Can't tell, because I am prevented from inputting anything.
[...]

You'll need to log what happens somehow, either netconsole
<https://www.kernel.org/doc/Documentation/networking/netconsole.txt> or
serial console
<https://www.kernel.org/doc/Documentation/serial-console.txt>.

Ben.

-- 
Ben Hutchings
In a hierarchy, every employee tends to rise to his level of incompetence.

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#53598 — Processed: Re: Bug#820955: linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot

Processing control commands:

> tag -1 moreinfo
Bug #820955 [src:linux] linux: When memory all used, cursor lags, keyboard does not respond, I am forced to reboot
Added tag(s) moreinfo.

-- 
820955: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=820955
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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