[OpenAFS-devel] Re: openafs is really faster on linux-2.4. than 2.6

[chas williams - CONTRACTOR]

In message <4304686F.20602@ribosome.natur.cuni.cz>,=?windows-1252?Q?Martin_MOKR
EJ=8A?= writes:
>kernel, I ran the same test twice. The first results were discarded
>but the data ended-up in kernel memory so on the second execution
>the data were just written to the disk through afs (from kernel memory).

i guess i am not convinced.  with a 1G cache, i saw the following:

2.4.20(ish), SMP

	relax.12% /usr/bin/time dd if=/dev/zero bs=8k count=700000 of=test.file4
	700000+0 records in
	700000+0 records out
	2.09user 208.03system 8:56.79elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
	0inputs+0outputs (159major+16minor)pagefaults 0swaps

2.6.13-rc3, SMP, PREEMPT

	relax% /usr/bin/time dd if=/dev/zero bs=8k count=700000 of=test.file4
	700000+0 records in
	700000+0 records out
	1.90user 211.66system 9:10.51elapsed 38%CPU (0avgtext+0avgdata 0maxresident)k
	0inputs+0outputs (0major+130minor)pagefaults 0swaps

these results are practically the same.