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Re: Power Mac G4 hangs under heavy IO load



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Hello,

On May 31, 2012, at 3:18 PM, Mihkel Ader wrote:

5.99.59 ran fine, 6.0 BETA and 6.99.7 (at least) have the following problem:

The machine becomes unresponsive after a few minutes when stressing the disks
(try to build NetBSD, copy files from one disk to another, cat disk
image to disk device).

Unresponsive means that it can be pinged, but no keyboard input is
possible on console,
can't SSH in, OTOH some programs like top in an existing SSH session
keep working
(quitting top would leave an unresponsive terminal window though). The
machine hangs
forever - it doesn't come back when the disk activity should have finished.

An anomaly in top output - the gzcat process would show CPU usage, but
the summary
line says 100% idle.

No messages in system logs or dmesg.

Does this still happen with a more recent -current kernel ( recent as in less than a week old ) ?

have fun
Michael

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