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> I saw your posting and had a question about dbcachenowsync.
> I have been testing OpenLDAP 1.2.x with this option enabled to increase
> write performance. However, I have observed the id2entry.dbb file
> increasing as more data is added to LDAP. In addition, restarting the
> machine does not cause LDAP to loose any data.
> My question is this: When dbcachenowsync is enabled, is slapd never
> synchronizing data to disk or is it just doing it less frequently.
If you mean restarting the machine after a crash, you are either lucky,
or you have been unlucky and you just don't know it yet.
If you have a lot of search/read activity, you will be getting some
flushes as time goes on. The more likely symptoms (in the event
of a slapd or system crash) will be that one of the index files
doesn't get flushed, and an object searched by filter does not
appear even though a base search exists.
My application has lots of write activity, and lots more searches
going on. I survived for quite some time without many problems,
even with slapd crashing. That's a testament to Sleepycat DB's
ability to keep the database files consistent (within themselves).
Finally, I write a sync_daemon() thread to address my particular
If, by restarting the machine, you are including a normal shutdown,
then slapd will be sent the signals it needs to tell it to shut down
and correctly flush everything it hasn't yet flushed.