--On Thursday, December 14, 2006 3:55 PM -0500 Paul Turgyan pturgyan@umich.edu wrote:
We've seen the slapd's on our mail slaves trying to grow greater than the 2 gigabyte resident set size. I spent two days w/ valgrind looking for memory leaks, but I failed to find anything. I finally discovered that repeatedly binding and unbinding using a SASL/ GSSAPI bind would cause slapd's resident set size and vm size to grow. So I wrote a test program to SASL Bind, issue a search, and unbind. The test program would do this sequence 10000 times before it stopped. The test program always issues the same exact search trying to eliminate any interferance from a growing entry cache and/or idlcache.
Interesting... I've been using SASL/GSSAPI with OpenLDAP for several years, and I agree I see memory growth in the loaded slapd, but it also stabilizes for me after a point. Have you looked at using any alternative memory allocators? I use Hoard instead of the default on my servers, and that has drastically improved memory allocation on my multi-CPU servers. You don't say how many CPU's you've got.
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITS/Shared Application Services Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html