Date: Thu, 10 Oct 1996 10:29:58 -0400 (EDT) From: Charles Henrich <henrich@crh.cl.msu.edu> To: dfr@render.com (Doug Rabson) Cc: simokawa@sat.t.u-tokyo.ac.jp, lite2@freebsd.org Subject: Re: Delayed write patch Message-ID: <199610101429.KAA00237@crh.cl.msu.edu> In-Reply-To: <Pine.BSF.3.95.961010131427.10204p-100000@minnow.render.com> from Doug Rabson at "Oct 10, 96 01:17:25 pm"
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> Thanks for the patch. It improves performance for my SGI from ~720k/sec
> to ~870k/sec. I modified the patch (and the nfs_dwrite patch) slightly
> and added comments to try to explain what is happening. Could you check
> the comments to make sure they agree with your understanding of the
> problem and I will commit this patch to current probably tomorrow.
A few more observations.
I did more performance tests with the v2 UDP, as per usual all were not good.
I did notice that the system was being locked out during the tests, but not
solid, I.e. after a few seconds my other transactions (to different NFS hosts)
would make it out and back.
I then switched the TCP v3, this didnt help at first? After about the third
test everything starting running extremely well, however I do not believe the
results. After completing my tests I attempted to unmount the sun, no such
luck "device busy". It took a reboot (which reported "Unabl to unmount") to
clear that up.
Next test, after the clean boot. CP the netscape binary to the partition, that
worked fine. However, when I then did an rm on the netscape binary, my system
locked up dead solid.
I think im going to back out those patches :)
-Crh
Charles Henrich Michigan State University henrich@msu.edu
http://pilot.msu.edu/~henrich
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