From: Andrew Haley <aph@redhat.com>
To: java@gcc.gnu.org
Subject: Re: GC leaks debugging
Date: Mon, 04 Apr 2011 08:13:00 -0000 [thread overview]
Message-ID: <4D997D8C.9060903@redhat.com> (raw)
In-Reply-To: <BANLkTinPa=OE3EufbbwmXxXnjYF-idey7w@mail.gmail.com>
On 03/04/11 18:59, Erik Groeneveld wrote:
> On Sun, Apr 3, 2011 at 7:14 PM, Erik Groeneveld <erik@cq2.nl> wrote:
>> On Sat, Apr 2, 2011 at 11:38 AM, Erik Groeneveld <erik@cq2.nl> wrote:
>>>
>>>> Note that in the information you posted, the GC was scanning around 7.5MB of roots conservatively. It might be worth checking what those regions are.
> [...]
>> So I am now off into JvCreateJavaVM,
>
> and I found that the 7.5 MB roots are the static data area of libgcj
> itself. The GC calls back -- the last arg being the size:
>
> _Jv_GC_has_static_roots(../gccinstall/lib/libgcj.so.12, 0xb704f000, 7544028)
>
> and since libgcj is in 'the store' (_Jv_print_gc_store() prints
> "../gccinstall/lib/libgcj.so.12"), it tells the GC to scan its static
> data area conservatively.
>
> As of yet I don't understand why this static area is so big, and what
> could be on it, but when I lay myself to rest, the little gray cells
> will sing to me (free after Hercules Poirot ;-).
It'll mostly be introspection data. Every class and every method has
this, and it can get to be quite large. I doubt it's the cause of
your memory leak unless there's a bug elsewhere.
Andrew.
next prev parent reply other threads:[~2011-04-04 8:13 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-01 8:39 Erik Groeneveld
2011-04-01 8:45 ` Andrew Haley
2011-04-01 9:03 ` Erik Groeneveld
2011-04-01 9:34 ` Andrew Haley
2011-04-02 0:27 ` Boehm, Hans
2011-04-02 9:39 ` Erik Groeneveld
2011-04-03 17:15 ` Erik Groeneveld
2011-04-03 18:00 ` Erik Groeneveld
2011-04-04 8:13 ` Andrew Haley [this message]
2011-04-04 8:53 ` Erik Groeneveld
2011-04-04 9:48 ` Andrew Haley
2011-04-05 4:44 ` Boehm, Hans
2011-04-05 8:58 ` Andrew Haley
2011-04-05 6:50 ` Erik Groeneveld
2011-04-05 9:02 ` Andrew Haley
2011-04-05 12:02 ` Erik Groeneveld
2011-04-05 12:55 ` Andrew Haley
2011-04-06 14:30 ` Erik Groeneveld
2011-04-06 18:33 ` Andrew Haley
2011-04-06 18:39 ` David Daney
2011-04-07 17:43 ` Erik Groeneveld
2011-04-08 8:12 ` Erik Groeneveld
2011-04-08 13:56 ` Andrew Haley
2011-04-08 15:35 ` David Daney
2011-04-08 15:53 ` Erik Groeneveld
2011-04-08 15:57 ` Andrew Haley
2011-04-08 15:48 ` Erik Groeneveld
2011-04-09 1:17 ` Boehm, Hans
2011-04-09 8:47 ` Andrew Haley
2011-04-09 10:56 ` Erik Groeneveld
2011-04-10 11:03 ` Erik Groeneveld
2011-04-12 18:43 ` Erik Groeneveld
2011-04-13 8:11 ` Andrew Haley
2011-04-13 12:11 ` Bryce McKinlay
2011-04-13 14:27 ` Andrew Haley
2011-04-14 8:36 ` Erik Groeneveld
2011-04-14 8:43 ` Andrew Haley
2011-04-14 10:02 ` Erik Groeneveld
2011-04-14 10:50 ` Andrew Haley
2011-04-15 7:32 ` Erik J Groeneveld
2011-04-01 17:41 ` David Daney
2011-04-02 16:21 ` Erik Groeneveld
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