content management system - Definition of Java's CMS GC log lines? -

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Examining a Java Runtime with CMS (Concurrent-Mark-Sweep) GC enabled, What is the definition of << strong>

cms place in the log below? Do I think this is a permanent place? I see the following lines of a small GC event 

  23.481: [G.C. 23.481: [DNFE: 1051 k-> 128 k (1152 k, 0.0029912 sec) 11925 K- > 11027 (13600k), 0.0031697 secs [time: user = 0.00 sys = 0.00, actual = 0.00 sec] 23.492: [Full GC 23.492: [CMS: 108 99K-> 9379K (12448K), 0.2675281 sec ] 11182 of-> 9379 (13600K), [CMS permit: 16383K-> 16359] (16384), 0.2686291 seconds] [time: user = 0.25 sys = 0.00, actual = 0.27 seconds] 23.956: [GC 23.956: [DnFAN: 4224K-> 49 4736K) , 0.0027654 seconds] 13603K-> 9428K (20372k), 0.0029230 secs [time: user = 0.00 sys = 0.01, actual = 0.02 sec]

especially [CMS] : 108 99 -K- & gt; Events of 9379 (12448), 0.2675281 seconds] on 23.492 . Does it show the tenured space labeled as CMS? Is CMS done only on sustainable?

(Disclaimer: not a JVM memory expert;)

If I believe That this type of log shows a drop in CMS has occupied the generation of , which is about the place of the alleged generation.

It can be combined with it, plays that have an important role in controlling things in the old generation.

Is allowed and keeps the old generation in check all the time.


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