[jboss-user] [Installation, Configuration & DEPLOYMENT] - Re: OutOfMemoryError on Windows

[scauwe]

Hi Peter,
I think you hit the seak spot. If I double the perm space to 128M, I can loop over 9500 'records'.
Turning on garbadge collection debugging, I see that when the perm space is getting full, it removes a long list of on-the-fly generated classes. It needs 4 Full GC cycles and more then 30 seconds to do this. At then end, the perm space and tenure space have enough free memory, but it still generates an OutOfMemoty exception.
The gc log gives the following 4 successive garbadge collections:

  | 405.633: [Full GC 405.633: [Tenured: 197077K->194077K(932096K), 2.9671419 secs] 197235K->194077K(1036928K), [Perm : 131071K->130711K(131072K)], 2.9672640 secs]
  | 410.008: [Full GC 410.008: [Tenured: 194077K->194452K(932096K), 2.1127909 secs] 214844K->194452K(1036928K), [Perm : 131071K->131071K(131072K)], 2.1128859 secs]
  | 412.138: [Full GC 412.138: [Tenured: 194452K->194452K(932096K), 2.0313302 secs] 194603K->194452K(1036928K), [Perm : 131071K->131071K(131072K)], 2.0314277 secs]
  | 414.258: [Full GC 414.258: [Tenured: 194452K->119631K(932096K), 26.2546285 secs] 194874K->119631K(1036928K), [Perm : 131071K->60643K(131072K)], 26.2547290 secs]
  | 
Any clue why after having cleaned up all the memory, and having more then enough free memory, it is still returning an OutOfMemoryError?

Does the memory allocation have some sort of 'timeout'? (I tried decreasing the perm space so it would take less time, but this did not help.)

Stefaan

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