[Assist] Really bad disk I/O or CPU time sharing.

Guilherme Vieira super.driver.512 at gmail.com
Thu Sep 25 19:29:43 UTC 2014

Oh, sorry for the spam, but here's the usual important information:

   - uname -a: Linux filgaia 3.16.1-1-libre #1 SMP PREEMPT Thu Aug 14
   15:55:12 UYT 2014 x86_64 GNU/Linux.
   - cat /proc/cpuinfo /proc/meminfo: http://pastebin.com/rGsneRe7.
   - cat /proc/sys/fs/file-max: 390102.
   - Xorg -version: http://pastebin.com/Xc0XJxZx.

Please let me know if you think any other information could be helpful.

Atenciosamente / Sincerely,
Guilherme Prá Vieira

On Thu, Sep 25, 2014 at 4:22 PM, Guilherme Vieira <
super.driver.512 at gmail.com> wrote:

> Hi, all. I've had the same problem on two different laptops in which I've
> installed Parabola, and I've had the same problem using gNewSense, IIRC.
> Basically disk access gets impaired very easily. I just did a system
> update right now and while the packages were being installed, my music
> player kept skipping. I'm not sure if that's caused by a buffer underrun
> due to bad disk I/O, or if it's having trouble decoding due to high CPU
> load.
> Since the computer doesn't feel slow at times like this, and just seems to
> "skip a beat" every now and then (quite noticeably,) I'm much more inclined
> to think it's an I/O problem.
> None of this ever happened on Windows using these two laptop computers.
> Also when Xorg or sometimes Firefox crashes, *the whole* system gets
> hogged, in such a way that I can't switch to or use the TTYs (if I manage
> to switch to them) and the computer doesn't respond to the physical power
> off button (ACPI request stuck on X...?)
> Please let me know if anyone knows how to troubleshoot these kinds of
> issues.
> A friend of mine mentioned ulimit (max open files by user,) which in my
> computer is set to 1024 (soft) / 4096 (hard,) even though the system-wide
> configuration is set to 300k+. Should I raise the maximum number of open
> files for my user or should I lower the system-wide number? Are they too
> high or too low? Could they be causing these issues?
> TIA.
> Atenciosamente / Sincerely,
> Guilherme Prá Vieira
> <http://www.linkedin.com/in/n2liquid>
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