Hi,
Have you tried tracing the garbage collection ->
https://docs.oracle.com/cd/E19159-01/819-3681/abeig/index.html?
Cheers,
Bogdan
On 24/01/2016 13:01, Musall Maik wrote:
Hi,
I have an application that often becomes laggy and shows slow responses almost
every day around 5 pm. The instance has daily scheduled restarts at 5 am, so it
occurs after 12 hours of use. When I restart it preemptively at 3 pm, the
problem does not occur. When I don't, users suffer bad response times on many
requests, but not all.
Users are computing heavy statistics in this application, instance size (mostly
snapshot cache) at that time is usually about 50 GByte, while Xmx is 84 GByte,
and XX:MaxPermSize is 1024m. The biggest instance size I've seen so far in
production is 61 GByte, so 50 seems not like a limit where something weird
happens.
CPU, memory, filesystem, database and network all show nothing special before
and after 5 pm. I monitored the instance with jvisualvm to no avail. I've been
searching for the reason for quite some time now, so I'd appreciate any
suggestion you might have what else to check.
Thanks
Maik
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