2003-11-13 18:58:15

by Eric Whiting

[permalink] [raw]
Subject: Re: 2.4 vs. 2.6 nfs client performance

Trond Myklebust wrote:
>
> > This is not the same test, nor the same results as Jason's, but
> > here is some more data from bonnie and dd tests.This shows some
> > write performance difference between 2.4 and 2.6 eric
>
> How about vs. 2.4.23?

2.4.23 looks good -- see below -- these are acceptable numbers for a 100M
network. I reran the 2.6.0-test6-mm4 benchmarks and it still is much slower than
the the 2.4.23.

Question for Jason: -- are you running the 4/4 vm layout in your kernel? My
2.6.0-test6-mm4 has the 4/4 vm enabled -- which can have an impact on
performance. I'll tetest with 2.6.0-test9 without the mm1 and 4/4 vm enabled.

eric


Linux host 2.4.23-rc1 #2 SMP Thu Nov 13 11:30:02 MST 2003 i686 athlon i386
GNU/Linux
/test> bonnie -s 100
Writing with putc()... done: 9228 kB/s 52.0 %CPU
Rewriting... done: 9435 kB/s 6.0 %CPU
Writing intelligently...done: 9235 kB/s 4.0 %CPU

/test> rm file;time dd if=/dev/zero of=file bs=1 count=10000000
10000000+0 records in
10000000+0 records out

real 0m20.086s
user 0m3.120s
sys 0m16.740s


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