Hi Fred,
On Sunday 23 September 2007 00:20, Frederic Bouvier wrote:
> I used a profiler of my own :
>
Excellent! This is almost exactly the type of profiling I hinted at yesterday.
I believe that this is a very debugging tool. Can we add a (slightly modified
version) of this profiling system to the actual simgear code?
>
>
>
>
> It appears that it is the replay subsystem that creates long pauses
> periodically, and sometimes the ai-model subsystem too :
It looks like I have some confirmatory evidence regarding the replay pauses.
Yesterday I left FlightGear running overnight, and found this morning that
the pauses had increased to multiple seconds. So this morning I reran
FlightGear in gdb, and hit ^C when the pauses had become sufficiently long
enough. Here's the stack trace:
gdb) bt
#0 0xb7a4f41c in _int_malloc () from /lib/libc.so.6
#1 0xb7a510c5 in malloc () from /lib/libc.so.6
#2 0xb7bd4477 in operator new () from /usr/lib/libstdc++.so.6
#3 0x0809a8b3 in std::deque<FGReplayData, std::allocator<FGReplayData>
>::_M_push_back_aux (this=0xfc866d0, [EMAIL PROTECTED])
at /usr/include/c++/4.1.2/ext/new_allocator.h:88
#4 0x08099796 in FGReplay::update (this=0xfc866b0, dt=0.83333333333333337)
at /usr/include/c++/4.1.2/bits/stl_deque.h:1045
#5 0x08588c16 in SGSubsystemGroup::Member::update (this=0xfc81140,
delta_time_sec=0.83333333333333337) at subsystem_mgr.cxx:236
#6 0x08589515 in SGSubsystemGroup::update (this=0x8a0bb74,
delta_time_sec=0.83333333333333337) at subsystem_mgr.cxx:127
#7 0x08588dfc in SGSubsystemMgr::update (this=0x8a0bb58,
delta_time_sec=0.83333333333333337) at subsystem_mgr.cxx:296
#8 0x0805255e in fgMainLoop () at main.cxx:509
#9 0x08087211 in GLUTidle () at fg_os.cxx:122
#10 0xb7f581df in glutMainLoop () from /usr/lib/libglut.so.3
#11 0x08056762 in fgMainInit (argc=2, argv=0xbfdcebd4) at main.cxx:1111
#12 0x080512d1 in main (argc=894892171, argv=0x229) at bootstrap.cxx:215
(gdb)
Cheers,
Durk
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