Paul B. Henson wrote:
I'm going to bump the production nodes up to 4G, which should be more than enough to run the OS and always have the entire database plus all indexes in memory. I will keep my fingers crossed this problem just goes away, but if it doesn't, what else can I do when it occurs to help track it down?
Use perf (formerly oprofile) and get a trace of slapd's execution during one of these searches. Also get a trace when it is performing normally, for comparison.