saslauthd performance anxiety

[Rob Siemborski]

On Wed, 1 Jan 2003 simon.brady at otago.ac.nz wrote:

> Since it's hard to predict peak usage, I'm tempted to run the daemon with
> the -n0 option so it can spawn as required. However, a colleague has
> pointed out that if something blows up then spawn-on-demand could kill the
> server - with a fixed-size pool, auth requests would fail but the system
> would keep going.

At CMU, before we went to using the doors IPC method (due to unix domain
socket issues under load on solaris), we used a value for -n of 2x our 5
minute connection rate peak (which we have from historical graphs).

If you are on Solaris, I highly recommend the doors IPC method over the
UNIX socket method, since we began to see very bizarre problems under
load.

-Rob

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Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456
Research Systems Programmer * /usr/contributed Gatekeeper