On Jun  5,  6:57pm, Takuya Koumoto wrote:
> I got the recent source code(approximately 1997/6/5) and
> build the new kernel on DEC5000/25 with 40MB of memory and
> an RZ25(400MB) HDD. The iozone gives the following results
> on 100MB sequential I/O test. Thanks to Mr. Nishimura, the
> old kernel(2 months ago) gave 1.6MB/sec for writing. Is that
> a known problem?
> 
>         347844 bytes/second for writing the file
>         1360373 bytes/second for reading the file
>         350038 bytes/second for writing the file
>         1322456 bytes/second for reading the file
>         349362 bytes/second for writing the file
>         1337128 bytes/second for reading the file

Hmm - on my DS5000/25 and an RZ25 (but using a 99MB file), I get:

        1255855 bytes/second for writing the file
        1337400 bytes/second for reading the file

This is with a kernel built from sources around May 29 (and I don't know of
any significant changes since then).  This was with the DS5000_25 config
file with the DEBUG option enabled.

I don't know why you would be seeing such a low write performance.

Michael

-- 
Michael L. Hitch			mhitch@montana.edu
Computer Consultant
Information Technology Center
Montana State University	Bozeman, MT	USA