We're trying to upgrade from 8.3.1 to 8.8.1 but my pre-release testing has shown us some performance issues. Examination of the GC log shows that the possible cause may be here:
8.3.1 graphs: https://imgur.com/a/ZM9wdob 8.8.1 graphs: https://imgur.com/a/UzMinwJ The test cycle here is 2 mins with requests; 2 mins no requests; 2 mins requests. You can see the 8.3 gives what I'd expect - fairly consistent heap usage, fairly fast & consistent GC durations. 8.8 however shows steadily increasing heap usage in the first request cycle and a big spike in one of the GC durations. This broad pattern repeats - with sometimes more than one slow GC operation for 8.8 - reliably each time I test. Is there any setting that might have been configured badly that could cause this? Or is it a bug? Thanks Dominic
