I tried to profile the memory with various tool but I can't see anything. I've tried to use jrockit and set it with 1gb newsize... The problem is still there. It's somethink like if a process on "timer" starts eating all the memory. Does the default configuration of jboss have some process that starts to do something after 13 hours of boot ? Or does it exist some process that starts on a specific condition ? If i restart jboss the problem is solved for some hours and then it comes back. So it can't be something related to the applications client, it must be something else! It's not a memory leak because the system keeps running and the occupied memory varies (it's not always growing). Any hint ? [INFO ][memory ] 3606.617-3607.456: GC 1300258K->84978K (5242880K), 838.964 ms [INFO ][memory ] 7207.491-7208.338: GC 1015477K->93056K (5242880K), 846.489 ms [INFO ][memory ] 10808.386-10809.143: GC 780919K->93621K (5242880K), 756.863 ms [INFO ][memory ] 14409.166-14410.062: GC 859083K->102183K (5242880K), 896.407 ms [INFO ][memory ] 18010.091-18010.828: GC 738553K->93361K (5242880K), 736.318 ms [INFO ][memory ] 21610.866-21611.479: GC 783016K->93796K (5242880K), 612.593 ms [INFO ][memory ] 25211.527-25212.377: GC 877385K->97377K (5242880K), 850.318 ms [INFO ][memory ] 28355.565-28355.750: GC 1182130K->125094K (5242880K), 185.104 ms [INFO ][memory ] 31190.734-31191.483: GC 1086929K->121687K (5242880K), 749.435 ms [INFO ][memory ] 33812.292-33812.424: GC 1169857K->136251K (5242880K), 132.776 ms [INFO ][memory ] 36163.268-36163.471: GC 1147925K->131655K (5242880K), 202.951 ms [INFO ][memory ] 38463.711: parallel nursery GC 1614098K->831714K (5242880K), 494.306 ms [INFO ][memory ] 38480.740: parallel nursery GC 1613714K->830594K (5242880K), 414.318 ms [INFO ][memory ] 38496.893: parallel nursery GC 1613394K->831394K (5242880K), 432.489 ms [INFO ][memory ] 38519.054: parallel nursery GC 1613394K->830594K (5242880K), 423.293 ms [INFO ][memory ] 39757.593-39757.751: GC 1547900K->126597K (5242880K), 157.734 ms [INFO ][memory ] 41986.769-41986.913: GC 1187874K->140813K (5242880K), 144.724 ms [INFO ][memory ] 44345.904-44346.064: GC 1261056K->153070K (5242880K), 160.614 ms [INFO ][memory ] 45160.828: parallel nursery GC 1599799K->824135K (5242880K), 168.815 ms [INFO ][memory ] 45163.988: parallel nursery GC 1599735K->821287K (5242880K), 37.270 ms [INFO ][memory ] 45166.991: parallel nursery GC 1599287K->823368K (5242880K), 42.019 ms [INFO ][memory ] 45169.997: parallel nursery GC 1598968K->820968K (5242880K), 38.009 ms [INFO ][memory ] 45173.002: parallel nursery GC 1598968K->823260K (5242880K), 35.458 ms [INFO ][memory ] 45176.005: parallel nursery GC 1598860K->820860K (5242880K), 37.036 ms [INFO ][memory ] 45179.009: parallel nursery GC 1598860K->823224K (5242880K), 35.218 ms [INFO ][memory ] 45182.002: parallel nursery GC 1598824K->820720K (5242880K), 37.749 ms [INFO ][memory ] 45185.004: parallel nursery GC 1598720K->823120K (5242880K), 35.726 ms [INFO ][memory ] 45187.998: parallel nursery GC 1598720K->820592K (5242880K), 37.297 ms [INFO ][memory ] 45190.995: parallel nursery GC 1598592K->822992K (5242880K), 35.212 ms [INFO ][memory ] 45193.988: parallel nursery GC 1598592K->820592K (5242880K), 37.718 ms [INFO ][memory ] 45196.985: parallel nursery GC 1598592K->822868K (5242880K), 35.630 ms [INFO ][memory ] 45199.978: parallel nursery GC 1598468K->820468K (5242880K), 37.431 ms [INFO ][memory ] 45202.982: parallel nursery GC 1598468K->822681K (5242880K), 35.342 ms [INFO ][memory ] 45205.973: parallel nursery GC 1598281K->820281K (5242880K), 37.172 ms [INFO ][memory ] 45208.925: parallel nursery GC 1598281K->822529K (5242880K), 39.648 ms [INFO ][memory ] 45211.904: parallel nursery GC 1598129K->819688K (5242880K), 41.357 ms View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4058186#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...