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From Bradley Wagner <bradley.wag...@hannonhill.com>
Subject Re: 100% usage and hanging on startup of Spring/Hibernate app in Tomcat 5.5 on Ubuntu 7
Date Thu, 03 Sep 2009 20:02:07 GMT
This is odd. After setting permgen to 128m with "-XX:MaxPermSize=128m" I'm
seeing it hang again. What's odd is that the PermGen space appears to be
totally used up at 26MB and not expanding, unless I'm reading it wrong.
Heap after GC invocations=10 (full 0):
 PSYoungGen      total 47296K, used 2831K [0xb0870000, 0xb4150000,
0xb4150000)
  eden space 36992K, 0% used [0xb0870000,0xb0870000,0xb2c90000)
  from space 10304K, 27% used [0xb3740000,0xb3a03e30,0xb4150000)
  to   space 10624K, 0% used [0xb2c90000,0xb2c90000,0xb36f0000)
 PSOldGen        total 466048K, used 16623K [0x94150000, 0xb0870000,
0xb0870000)
  object space 466048K, 3% used [0x94150000,0x9518bea8,0xb0870000)
 PSPermGen       total 26240K, used 26114K [0x8c150000, 0x8daf0000,
0x94150000)
  object space 26240K, 99% used [0x8c150000,0x8dad0a50,0x8daf0000)
}
VM-Thread 9737526 9770673 9771284
GC-Thread 0 entries: 8
[ old-to-young-roots-task 9750971 9766007 ]
[ thread-roots-task 9766013 9766016 ]
[ scavenge-roots-task 9766017 9766024 ]
[ scavenge-roots-task 9766024 9766028 ]
[ scavenge-roots-task 9766029 9766032 ]
[ scavenge-roots-task 9766033 9766504 ]
[ scavenge-roots-task 9766505 9766506 ]
[ steal-task 9766507 9770612 ]
GC-Thread 1 entries: 19
[ old-to-young-roots-task 9737771 9756587 ]
[ serial-old-to-young-roots-task 9756590 9762460 ]
[ scavenge-roots-task 9762462 9762465 ]
[ scavenge-roots-task 9762466 9762481 ]
[ thread-roots-task 9762482 9762500 ]
[ thread-roots-task 9762506 9762516 ]
[ thread-roots-task 9762516 9762534 ]
[ thread-roots-task 9762535 9762552 ]
[ thread-roots-task 9762553 9762558 ]
[ thread-roots-task 9762558 9762565 ]
[ thread-roots-task 9762565 9762567 ]
[ thread-roots-task 9762567 9762569 ]
[ thread-roots-task 9762570 9762572 ]
[ thread-roots-task 9762572 9762574 ]
[ thread-roots-task 9762574 9762580 ]
[ thread-roots-task 9762580 9762584 ]
[ thread-roots-task 9762585 9770048 ]
[ steal-task 9770050 9770591 ]
[ waitfor-barrier-task 9770592 9770632 ]
{Heap before GC invocations=11 (full 0):
 PSYoungGen      total 47296K, used 39823K [0xb0870000, 0xb4150000,
0xb4150000)
  eden space 36992K, 100% used [0xb0870000,0xb2c90000,0xb2c90000)
  from space 10304K, 27% used [0xb3740000,0xb3a03e30,0xb4150000)
  to   space 10624K, 0% used [0xb2c90000,0xb2c90000,0xb36f0000)
 PSOldGen        total 466048K, used 16623K [0x94150000, 0xb0870000,
0xb0870000)
  object space 466048K, 3% used [0x94150000,0x9518bea8,0xb0870000)
 PSPermGen       total 26624K, used 26570K [0x8c150000, 0x8db50000,
0x94150000)
  object space 26624K, 99% used [0x8c150000,0x8db42ab0,0x8db50000)
10.307: [GC


On Thu, Sep 3, 2009 at 3:58 PM, Caldarale, Charles R <
Chuck.Caldarale@unisys.com> wrote:

> > From: Bradley Wagner [mailto:bradley.wagner@hannonhill.com]
> > Subject: Re: 100% usage and hanging on startup of Spring/Hibernate app
> > in Tomcat 5.5 on Ubuntu 7
> >
> > Hmm, I'm going to try again with more explicit PermGen space as it
> > seems to be out of it.
>
> Try it, but I'd be surprised if it had any effect.  The values shown are
> for the current size of PermGen, not the maximum to which it may expand.
>  That's usually 64m, unless you've changed it.
>
>  - Chuck
>
>
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