With the PAM/PHM change in 1.13, would you expect any observable change in memory or CPU usage? (just curiousโwe rolled most of our apps on one server onto 1.13 Alpha 2, and we plan to observe them for 24 hours)
more PAM, so likely slighly reduced memory but given that most maps are small, doubt it makes a ton of difference.
if you see anything, let us know
I'll see how the JVMs compare across all our servers tomorrow, when it's been running for 24 hours. Based on the 5 hours since I deployed it, it does look like reduced memory usage but it's probably a bit too early to call it.
An apples-to-apples comparison shows no noticeable change in memory usage, between 1.12.5 and 1.13.0 Alpha 2, after that deploy/restart about 24 hours ago. Sorry for the earlier false report ๐
After 24 hours, I am seeing lower heap, specifically lower old gen usage. But that may be just due to how long the same process has been running on the other servers. I feel comfortable pushing this onto our other servers tho', at this point...
lower old gen would make sense to me wrt fewer PHMs (which can live for a long time via structural sharing)
Would you expect as much as 50MB lower? (200MB -> 150MB) I should have restarted at least one of the other servers' processes at the same time for a true comparison ๐
Pushed 1.13 Alpha 2 to another server, and also restarted the 1.12.5 app on yet another server. I'll get a true apples-to-apples comparison tomorrow!
I don't have an expectation - will totally depend on usage