Russ Allbery wrote:
>Glew, Andy <[EMAIL PROTECTED]> writes:
>
>The cache manager is really slow. I think that's likely most of it. You
>may also want to take a look at using a large memory cache rather than a
>disk cache and see if that increases your performance; I've heard from
>some other sites that that can make a substantial difference.
>
>--
>Russ Allbery ([EMAIL PROTECTED]) <http://www.eyrie.org/~eagle/>
Possibly, but not always. In some tests we ran, if you have enough memory
that the disk cache never has to flush the buffers to disk, the disk cache
outperformed the memory cache. Shouldn't be so, but it is.
I also tried to set up a system to monitor file server performance by
measuring round-trip time on file access requests. File servers with
significantly different capabilities all showed the same round-trip-times.
The file server performance got lost in the (poor) client cache performance.
There is definitely some room to tune the client cache.
--
Dave Thompson <[EMAIL PROTECTED]>
Associate Researcher Department of Computer Science
University of Wisconsin-Madison http://www.cs.wisc.edu/~thomas
1210 West Dayton Street Phone: (608)-262-1017
Madison, WI 53706-1685 Fax: (608)-262-6626
--
