[jira] [Created] (GEODE-7483) Add support for new Oracle ZGC garbage collector

["Alex Dubrouski (Jira)" <ji...@apache.org>]

Alex Dubrouski created GEODE-7483:
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             Summary: Add support for new Oracle ZGC garbage collector
                 Key: GEODE-7483
                 URL: https://issues.apache.org/jira/browse/GEODE-7483
             Project: Geode
          Issue Type: Improvement
          Components: client/server
            Reporter: Alex Dubrouski


Good afternoon,

We have a POC Geode cluster and few regions have pretty short TTLs for keys, thus sometimes we experience spikes in garbage collection pauses due to eviction of large amount of weak references. I tried to switch cluster to Oracle new ZGC (it supposed to process weak roots concurrently, so theoretically there will be trade off long pauses for CPU usage spikes), but I am getting this error when starting a server:
{code:java}
[error 2019/11/20 13:01:58.302 PST <main> tid=0x1] No tenured pools found.  Known pools are: [(Name=CodeHeap 'non-nmethods';Type=Non-heap memory;UsageThresholdSupported=true), (Name=Metaspace;Type=Non-heap memory;UsageThresholdSupported=true), (Name=ZHeap;Type=Heap memory;UsageThresholdSupported=true), (Name=CodeHeap 'profiled nmethods';Type=Non-heap memory;UsageThresholdSupported=true), (Name=CodeHeap 'non-profiled nmethods';Type=Non-heap memory;UsageThresholdSupported=true)]
{code}
(OpenJDK v13.0.1)

Could you please implement support for new generation of low pause garbage collectors?

Thanks.

 

Regards,

Alex Dubrouski



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