Messages in this thread | | | Date | Fri, 11 Feb 2000 16:51:48 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: elevator-starvation-4 (2.2.14 && 2.3.42) |
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On Thu, 10 Feb 2000, Bruce Thompson wrote:
>[..] In a case where >requests are being generated faster than the driver can deal with >them then no matter how we order the request queue, we've got a >problem.
Just think when one user grabs TV or when an user writes on an NFS server with a gigabit network. Or think a CPU intensive program that generate a flood of output on disk (a common strace -o /tmp/o can do exactly that with a fast enough CPU and a slow enough HD).
I use `cp /dev/zero .` to do that testing just to emulate the effect of the possible real world scenarios.
`cp /dev/zero .` usually shows the hang because usually CPU is faster than HD.
Andrea
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