On Thu, 17 Dec 1998, Robert M. Hyatt wrote:
> > First, that the wsize/rsize need to be set on a linux client to get
> > decent performance reading/writing to sun servers. We use
> > wsize=8192,rsize=8192.
>
> I haven't see this as a problem with recent kernels. I mount files
> from solaris servers on my linux boxes with no problems...
It wasn't a "problem" in that something wouldn't work, it was a
performance issue. To see the performance differential, one needs to
try copying large files (the linux kernel tarball is a good choice or
one can make a really big file with dd). We saw close to an order of
magnitude improvement in NFS write speeds (not reads, which are less
affected) TO a sun server with tuning, as in order of a few hundred
KB/sec -> a few MB/sec (on a switched 100BT connection). You cannot try
this one twice in a row with the same file, BTW, or caching will defeat
the test -- touch it in between. If the problem is finally resolved,
that's great news.
> the only caching issue i have seen is the "noac" option on sun
> automounting that I reported earlier this year. Without this,
> linux writes to a solaris server will run at speeds of around 5kb/sec
> or less. With this option set on the solaris clients, nfs writes
> get about as close to "wire speed" as nfs writes can.
I believe that this is the same thing, although we saw actual corruption
of file images as noted before without it.
rgb
Robert G. Brown http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567 Fax: 919-660-2525 email:[EMAIL PROTECTED]
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