On Mon, 2013-12-09 at 11:29 +0100, michallos wrote: > "on production" - no I can't profile it (because of huge overhead) ... Maybe > with dynamic tracing but we can't do it right now.
https://blogs.oracle.com/nbprofiler/entry/visualvm_1_3_released First section: "Sampler In The Core Tool". > After server restart, delta time reset to 15-20 seconds so it is not caused > by the mergeFactor. Unless your merges are cascading so that the amount of concurrent merges is growing. But with fast storage and a lot of RAM for write cache, that does not sound probable. > We have SSD and 70GB RAM (it is enough for us). Sounds like more than enough for a 120GB index. - Toke Eskildsen, State and University Library, Denmark
