What influences young generation pause times?

Matt Khan matt.khan at db.com
Tue Apr 20 13:30:32 PDT 2010

>> You might need a VM with this fix. 6782663: Data produced by 
PrintGCApplicationConcurrentTime and PrintGCApplicationStoppedTime is not 
OK so that's the early access for 6u21 by the looks of it. I'll repeat a 
run on that JVM (and with the safepoint stats).

>> If the log doesn't show a [GC...] line at a safepoint, then there is 
not GC activity during it 
does this mean that the actual time stopped due to GC is the one 
immediately after the GC line? 

>> You could use -XX:+PrintSafepointStatistics etc. to figure these out.
which other flags should I look at?


Matt Khan
GFFX Auto Trading
Deutsche Bank, London


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