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SubjectRe: [CFT] delayed allocation and multipage I/O patches for 2.5.6.

--On Monday, March 11, 2002 22:00:57 -0800 Andrew Morton <> wrote:

> "help, help - there's no point in just one guy testing this" (thanks Randy).

Will you accept the testing of a gal? ;)
> This is an update of the delayed-allocation and multipage pagecache I/O
> patches. I'm calling this a beta, because it all works, and I have
> other stuff to do for a while.

Here are the dbench throughput results on an 8-way SMP with 2GB memory.
These are run with 64 then 128 clients 15 times each averaged. It looked
pretty good.
Running with more than 180 clients caused the system to hang, after
a reset there was much filesystem corruption. This happened twice. Probably
related to filling up disk space. There are no ServerRaid drivers for 2.5 yet
so the biggest disks on this system are unusable. lockmeter results are forthcoming (day or two).

Running dbench on an 8-way SMP 15 times each.

2.5.6 clean

Clients Avg

64 37.9821
128 29.8258

2.5.6 with everything.patch

Clients Avg

64 41.0204
128 30.6431


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