That was exactly what I needed. Derby is being started via Glassfish and the stdout of the "-verbose:gc" is going nowhere.
Funny that this option is never mentioned in a page like: http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html#par_gc.ergonomics Thank you very much! Brett -----Original Message----- From: Kristian Waagan [mailto:[email protected]] Sent: Wednesday, February 22, 2012 7:50 AM To: [email protected] Subject: Re: Trying to start derby network server with properties to monitor garbage collection On 22.02.2012 12:02, Knut Anders Hatlen wrote: > "Bergquist, Brett"<[email protected]> writes: > >> Tried adding “-verbose:gc” to the “startNetworkServer” script, but I >> cannot find out where the garbage collection statistics output should >> appear? > It is printed to the console in my environment: You can also try -Xloggc:file. Don't think you need -verbose:gc then, but some of the other GC-related flags may affect the output. Regards, -- Kristian > > % DERBY_OPTS=-verbose:gc > /code/derby/releases/db-derby-10.8.2.2-bin/bin/startNetworkServer > Wed Feb 22 11:56:20 CET 2012 : Security manager installed using the Basic > server security policy. > Wed Feb 22 11:56:21 CET 2012 : Apache Derby Network Server - 10.8.2.2 - > (1181258) started and ready to accept connections on port 1527 > [GC 16896K->1312K(64768K), 0.0116008 secs] > [GC 18208K->2584K(64768K), 0.0106343 secs] > [GC 19480K->3885K(64768K), 0.0133624 secs] > [GC 20781K->4147K(64768K), 0.0076451 secs] >
