I/O Bound Procs Clobbering Responsiveness

Karel Volný kvolny at redhat.com
Tue Nov 8 11:17:56 UTC 2011


I'm afraid the problem is not specific to Fedora ... I see 
something similar on my Gentoo box after upgrading kernel from 
2.6.39 to 3.0.6

I haven't tried with USB but I can see whole system being pretty 
slow if there is high SATA load.

And also I had to stop bitcoin computations on my GPU, as the GUI 
became totally unresponisve while running poclbm - this didn't 
happen with previous kernel, I could run the computations in the 
background while working with the GUI.

/me is thinking about kernel downgrade ...


On Monday 07 of November 2011 17:36:10 Chuck Forsberg WA7KGX 
N2469R wrote:
> This a subjective comment, but it seems that I/O bound procs
> such as disk copy are seriously impacting GUI response more
> than before.   For example, switching windows can take 30
> seconds or more.  Indeed it appears the system has halted
> except that the clock seconds keep ticking away.
> Setup:  R6550 8GB Fedora 16 64 bit accessed via TigerVNC over
> a gigabit LAN.

Karel Volný
QE BaseOs/Daemons Team
Red Hat Czech, Brno
tel. +420 532294274
(RH: +420 532294111 ext. 8262074)
xmpp kavol at jabber.cz
:: "Never attribute to malice what can
::  easily be explained by stupidity."
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