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IDL cache info (was re: openldap versions and silent exit)

Rich Graves wrote:

On Wed, 11 Aug 2004, Quanah Gibson-Mount wrote:
Howard gave me a general rule of thumb:

For BDB, idlcachesize should be equal to cachesize in slapd.conf

For HDB, idlcachesize should be 3 times cachesize in slapd.conf.

Howard, why the difference?

I touched on this in a previous reply. back-hdb manages its DN info differently than back-bdb; in simple terms, it uses a large number of small IDLs while back-bdb uses a smaller number of large IDLs.

Do the internal cache structures get slower with size?

Not appreciably. They're AVL trees, so they stay pretty efficient as the number of cache items grows.
-- Howard Chu
Chief Architect, Symas Corp. Director, Highland Sun
http://www.symas.com http://highlandsun.com/hyc
Symas: Premier OpenSource Development and Support