Bug#498328: linux-image-2.6.26-1-amd64: nice is not "fair": mouse jumps and chars repeated in terminal
Hi Havis, I'm forwarding your reply to the bug log, so the maintainer
can have a better idea of the situation.
Given your workaround (I'm not going to replicate) it's even more
clearer a bug in the kernel needing to be fixed before Lenny release.
Sandro
On Tue, Sep 23, 2008 at 12:18, Havis <juraj.kvasnica@gmail.com> wrote:
> Hi, I have same problems like you.
> I have Debian Lenny with 2.6.26-1-686 kernel
> I have been running boinc for a long time
> and these issues appeard on my PC after
> I started using kernels with CFS scheduler (2.6.24+)
> my hw is:
> CPU: Pentium 4 2.8GHz HT
> RAM: 2GB DDR 400MHz
> MB: ABIT IC7-G
> HDD: Hitachi 500GB, Hitachi 250GB, Maxtor 120GB (all 7200rpm)
>
> A solution for me was to turn off HyperThreading in BIOS.
> I think that -nice 19 processes have too high priority
> and that -nice 19 behavior should be changed
> so that these tasks get only _free_ (not used) CPU clocks.
>
>
> Sandro Tosi wrote:
>> severity 498328 important
>> thanks
>>
>> On Tue, Sep 9, 2008 at 09:24, Sandro Tosi <matrixhasu@gmail.com> wrote:
>> > Package: linux-image-2.6.26-1-amd64
>> > Version: 2.6.26-4
>> > Severity: normal
>> >
>> > Hello,
>> > I updated 2 days ago to this kernel, and I start notice pretty soon this
>> > problem: when I execute a program of mine (even with nice -n 19), with 4
>> > parallel thread (it's cpu bound), the system completely slow down, the mouse
>> > starts jumping (not a smooth movement), switching to other application is
>> > really slow and the programs starts repeating input chars randomly (verified
>> > with amsn and gnome-terminal): this is what I came out trying a "ls /proc...":
>> >
>> > $ lllllllllllllllllllllllllllllllllllllllllllllllllllls /procccccccccccccccccccccccc/2808
>>
>> Today the situation was much more worst (after 3 days of uptime):
>> while trying to access to mysql from terminal, I start typing 'm' char
>> and then the drama begins: the 'm' char was repeating forever (and
>> it's not a faulty keyboard, since I remove the battery and the flow
>> kept going) in every window I choose, both terminals, xchat,
>> iceweasel, etc. in the current virtual desktop and in others
>>
>> After a while, the whole machine start "ranting": switching to other
>> virtual desktop result in freezed windows, trying to exit from the DE
>> (xfce in this case) was not possible since xfce-panel was not
>> responding, and not even ssh from another pc worked!!
>>
>> Please treat this as a grave bug (I didn't raise the severity to that
>> level because I still don't know if it's RC or not). I renew my offer
>> to support you in any way to debug & fix it. I saw a -5 was released:
>> I'll try it but from changelog it doesn't seem to address this
>> problem.
--
Sandro Tosi (aka morph, Morpheus, matrixhasu)
My website: http://matrixhasu.altervista.org/
Me at Debian: http://wiki.debian.org/SandroTosi
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