[ILUG] Bigger pipes...
drjolt+ilug at redbrick.dcu.ie
Wed Apr 25 19:01:18 IST 2001
Quoting <20010425174109.B70E02BD25 at thalassa.netnoteinc.com>
by Justin Mason <jm at netnoteinc.com>:
> kevin lyda said:
> > since nfs allows for caching, uses larger buffers and uses udp, i'm a
> > bit lost on the "extra overhead" argument. not sure who mentioned it,
> > but i'm curious as to a justification for the comment.
> 'twas me...
> It's actually old advice from Solaris, so it may not apply to Linux as
> much, but basically, it makes sense:
> - let a process on one machine read the file sequentially, which is more
> likely to be optimised than the NFS-read case (only slightly more
> likely, but...);
> - then use TCP, which, I thought, was more likely to be good for big
> blats over a local LAN than UDP.
> Might be wrong about the latter though. (and judging by Kenn's results,
> yes I am ;)
I just tried with a pair of Solaris systems, which default to NFS3
over TCP, and NFS was still faster than netcat.
"Where am I supposed to find coelacanths at this time of day?"
"Process doesn't concern me. I'm a high level thinker."
David Murphy - For PGP public key, send mail with Subject: send-pgp-key
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