Optimal BUFFERS setting for performance?
Hendrik Vermooten
hendrik at zeusa.UUCP
Thu Mar 15 15:48:00 AEST 1990
My machine is a 16MHz 386 with 4.5MB RAM, with a fast disk running XENIX-386.
I do a lot of compiles but I find that I seldom need all my RAM for my
applications. I have increased the BUFFERS setting in the kernel to speed
things up, and since switching from a 28ms to a 14ms drive my bottleneck has
changed from disk to CPU.
How much CPU overhead do extra buffers give? (Assuming we have enough RAM not
to swap a lot) Is there a limit where performance is hampered by increasing
the BUFFERS?
I'd appreciate it if anybody with answers or guidelines would e-mail it to me.
I'll place a follow ups as appropriate.
*** *** Hendrik Vermooten, ZEUS software
* o o * Bang: ..!uunet!ddsw1!olsa99!zeusa!hendrik
O| I |O or hendrik at zeusa.UUCP
| *** |
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