-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 André,
On 1/21/15 3:13 PM, André Warnier wrote: > Mike Seda wrote: >> Is it advisable to have the following JVM option set in Tomcat 7 >> (with Java 7)? -XX:+DisableExplicitGC >> >> Or will this prevent Tomcat itself from calling System.gc() when >> it needs to? >> > > Tomcat is probably not doing that anyway (I'll let someone else > answer that part), but there might be some monitoring/control > application running, which could be using that. > > > The reason I am thinking of this, is that I have a couple of > installations where because of an unruly webapp leaving tons of > connections open in CLOSE_WAIT state, I am using a jmxsh script > regularly, to provoke such GC's to clean them up. If I set the > option above, that script would probably fail, and the system would > slowly get to an inoperative state. I'm interested... if you add -XX:+DisableExplicitGC and try your JMX-based gc-caller, does it still invoke the gc? I know that sounds stupid, but I wonder if the JMX bean's "gc" method just calls System.gc() or if it uses something under the covers that will still work. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJUwAt5AAoJEBzwKT+lPKRY6oUP/jSwhawcq18sOid3ESIODrEO DLOCxw+EOTbiuxcpYfc0F0Wy4wokMeSpB4Yst/vhi/fli8li9458XqmL/X6AqpHA BMQL2vq0ZFxZokgk/9sZ2CuARmmKUjQwNZl86Dl3sbSV7o/uPoM/FJ5s7MmZkefC dWESL8UgkKyywAVmHnh9bNwQeQtv762U82aEECQZewo2zx7rx7xWDnMDGmmLGgqe QwHlBMw7Mwh9GLbQJ9F4tUA4OhMAqJivXVpb2YN+m1CBURJywLYYzye0ayUORfyt Wyk5iw/g048tykmyotTucDuEF8L87vd2xBEBjgL8w1gFWU4jhg8II0/MBmYgafrz p6qcE3jl6bH2Qmaf4Wt0+nLNLwWat4J4LhDjqCbY0Q4QeBeEC0Iw7PPFGPYnZKyR xJtLxMMq5XMq1JupKfdh/2qInPxqv3h3PkKOCCJVDy/Zo2PT5fViN5mktNEBuBQa 17lITWm9IwpR41xHFvz21fWGMTSx8/EhWj7qsNWz4CiephrHpPXr1p3HV+jG9EnK vV06cgDnBi9UprvbtbF+qVRabMBGq2Idr4JnTY8muG+QShC7UYDeRWrlSXm/4rU7 oBPuCh1PfI0qiz7saOaAn1Dyq8ZsW3sfG7vRfPYVNBM/ow20X8p5oFhMopYYYxYn ScJqskl/HxOdD2nUiq65 =wqJr -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
