Auth speed: UW IMAP + PAM + Kerberos
Andrew Laurence
atlauren at uci.edu
Fri Jul 9 21:40:27 EDT 2004
Hello all,
I'm trying to solve a puzzle. We have a collection of UW IMAP servers
which consult Kerberos for the user auth. The older servers running
RH72 or RH9 and UW2001 are lickety-split in doing this. However, the
newer servers (faster hardware) with RHEL-AS3 and UW2003 are much
slower. It's a comparison of 0.03 seconds to 2.5 seconds - the
difference is quite dramatic.
It occurred to me today that the older machines link directly to the
Kerb libraries, while the newer ones use PAM. Is it absurd to consider
that PAM may be causing a performance lag?
If so, are their known techniques for evaluating PAM/Kerb performance?
Thanks!
-Andrew
--
Andrew Laurence atlauren at uci.edu
Indirect Support Team http://www.oac.uci.edu/~atlauren/
Network & Academic Computing Svcs.
UC Irvine
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