What kind of collection? if its par new I wouldn't worry. On Thu, Apr 21, 2016 at 2:02 PM, Sotirios Delimanolis <sotodel...@yahoo.com> wrote:
> Should this be of any concern? Are the corresponding threads spending too > long in this JNI critical region and delaying GC? > > I don't get that impression at all from the GC log timings. They're very > reasonable. > > On Thursday, April 21, 2016 10:57 AM, Jake Luciani <jak...@gmail.com> > wrote: > > > It's only used by the Snappy and LZ4 Compressors > > On Thu, Apr 21, 2016 at 1:54 PM, Sotirios Delimanolis < > sotodel...@yahoo.com> wrote: > > According to this Oracle document > <https://blogs.oracle.com/g1gc/entry/g1_gc_glossary_of_terms>, GCLocker > Initiated GC > > is triggered when a JNI critical region was released. GC is blocked > when any thread is in the JNI Critical region. > If GC was requested during that period, that GC is invoked after all > the threads come out of the JNI critical region. > > What part of Cassandra's implementation does anything with JNI? > > In our GC logs, this is by far the most common reason for GC pauses. > > > > > -- > http://twitter.com/tjake > > > -- http://twitter.com/tjake
