From: "Michael Ralston" <ralston@stral.net>
To: user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Problem with Real-Time Scheduling
Date: Sun, 26 Oct 2003 16:20:30 +1100 [thread overview]
Message-ID: <000001c39b80$e011fbe0$3d4bd540@celery> (raw)
In-Reply-To: <20031026043958.GN6350@dijkstra.csh.rit.edu>
I've come across a problem with running a user-mode-linux instance with
RR-Scheduling. When I attempt to start a server with chrt the host
system panics. I can start a uml in normal (other) scheduling, and then
change it to RR-Scheduling and it works fine, until I try to stop the
uml... then I get the same kernel panic.
I'm using the skas-3 patch on a 2.4.21 kernel, and 2.4.21-6um. If you
need the specific output of the kernel panic, I can get it...
Just as a related question... how would different scheduling the
different 'threads' of the UML effect performance? As far as I know..
the first 'linux' process actually does all the work and the extra
processes are for the different IO the UML does, eg network, block
devices etc? Would increasing the priority of the IO over the priority
of the main process have an effect on network performance for example?
Michael Ralston
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next prev parent reply other threads:[~2003-10-26 5:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-25 13:05 [uml-devel] uml on iA-64 pierre.gentile
2003-10-25 17:03 ` Jeff Dike
2003-10-26 4:39 ` Matt Zimmerman
2003-10-26 5:20 ` Michael Ralston [this message]
2003-10-26 19:09 ` [uml-devel] Problem with Real-Time Scheduling Jeff Dike
2003-10-26 21:23 ` Nuno Silva
2003-10-29 19:12 ` BlaisorBlade
2003-10-30 0:40 ` Nuno Silva
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