> I'm running Red Hat 7.3 with their stock 2.4.18-3 kernel on an IBM
> T30. Once every few hours X locks up for 5-10 seconds while the disk
> grinds. If I type in an Xterm the characters are not echoed until the
> disk grinding stops. Then they all come out in a bunch and life is back
> to normal.
> I asked about this on kernelnewbies but the only response was something
> regarding some kind of change to the 'elevator code' but they didn't
> know of a solution.
The problem is, since 2.4.19-pre5 the elevator has changed to give more
throughput but also introduce pauses and even stops while disk i/o.
Redhat's 2.4.18 is not 2.4.18 but something 2.4.19ish(-pre|-pre-ac or so).
> I would like very much for this behavior to go away as it is extremely
> annoying. If there is a patch please let me know where I can get it.
There are some hacks. One by Andrea Arcangeli, one by Neil Schemenauer and one
by Con Kolivas and me. Search the archives please (lowlat elevator/io
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