Re: 2.4 vs. 2.6 nfs client performance

[Eric Whiting <ewhiting@amis.com>]

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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