[Mageia-dev] Fwd: Re: [Cooker] System can stall under heavy IOs with slow storage devices
ftg at roadrunner.com
Tue Dec 20 13:26:19 CET 2011
I've been noticing this symptom for a while now especially when running
programs that copy large files using large buffer sizes. It's worse
than just firefox, as the entire desktop will freeze for minutes at a time.
This change/workaround cleared this up entirely for me. If we haven't
incorporated this yet, we should consider doing so.
-------- Original Message --------
Subject: Re: [Cooker] System can stall under heavy IOs with slow
Date: Mon, 19 Dec 2011 19:36:02 +0100
From: Florian Hubold <doktor5000 at arcor.de>
Reply-To: cooker at mandrivalinux.org
To: cooker at mandrivalinux.org
Am 19.12.2011 10:26, schrieb Franck Bui:
> I've noticed a regression on my system which can stall some applications
> (most notably firefox) during very very long time (> 10 mins).
Man, you're my hero, trying to find out what causes this since some months now.
At least two thumbs up! :)
> It's apparently related to transparent huge pages and I found that it
> had already been described by LWN here a month ago:
> Unlike what it's stated in the article, the regression is not really
> hard to trigger in my case: just plug a USB stick, copy on it a big
> file, then try to use firefox...
> To fix this, simply try to disable THP:
> echo madvise>/sys/kernel/mm//transparent_hugepage/enabled
> and firefox should work as expected now.
> So, if no one objects, the plan is to simply default the THP stuff to
> "madvise" for desktop flavour where an application has to ask
> explicitly huge page otherwise it will be disabled.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Mageia-dev