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SubjectRe: 2.6.12-rc2-mm3
On Monday 11 April 2005 04:25, Andrew Morton wrote:
> - The anticipatory I/O scheduler has always been fairly useless with SCSI
>   disks which perform tagged command queueing.  There's a patch here from Jens
>   which is designed to fix that up by constraining the number of requests
>   which we'll leave pending in the device.
>   The depth currently defaults to 1.  Tunable in
>   /sys/block/hdX/queue/iosched/queue_depth
>   This patch hasn't been performance tested at all yet.  If you think it is
>   misbehaving (the usual symptom is processes stuck in D state) then please
>   report it, then boot with `elevator=cfq' or `elevator=deadline' to work
>   around it.
> - More CPU scheduler work.  I hope someone is testing this stuff.

Something is not quite right here. I built rc2-mm3 and booted (uni processor, amd64, preempt on).
mm3 lasted about 30 mins before locking up with a dead keyboard. I had mm2 reboot a few times
over the last couple of days too.

11-mm3 uptime of 2 weeks+
12-rc2-mm2 reboots once every couple of days
12-rc2-mm3 locked up within 30 mins using X using kmail/bogofilter

My serial console does not seem to want to work. Has anything changed with this support?

Ed Tomlinson

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