[Mono-list] Mono heapshot profiler woes
Nicholas Frechette
zeno490 at gmail.com
Sun Nov 6 18:20:14 EST 2011
Hi,
I just tried without sgen. There is no crash, a log is generated and
there seems to be data inside but heapshot fails to interpret the data
afterwards. It shows 1 object for every snapshot...
I'm not sure if I can manage to create a test case for this. I have a
fairly simple gtk# application, nothing fancy: no interop besides
gtk#, no heavy usage of the GC, mostly simple C# code.
I'll see what I can do next weekend.
On Sun, Nov 6, 2011 at 10:50 AM, Rodrigo Kumpera <kumpera at gmail.com> wrote:
> This sucks, I did hope 2.10.6 would fix it.
> Can you provide a test case for this crash? This way it's a lot easier to
> diagnose and fix it.
>
> On Sat, Nov 5, 2011 at 5:26 PM, Nicholas Frechette <zeno490 at gmail.com>
> wrote:
>>
>> I upgraded to mono 2.10.6, the latest official stable release. I still
>> get a similar result, see below.
>> Are there extra dependencies required for it to work?
>>
>> [mono-2.10] ~/projects/rovisualizer-dev/rovisualizer/bin/Debug @ mono
>> --version
>> Mono JIT compiler version 2.10.6 (tarball Sat Nov 5 14:41:55 EDT 2011)
>> Copyright (C) 2002-2011 Novell, Inc, Xamarin, Inc and Contributors.
>> www.mono-project.com
>> TLS: __thread
>> SIGSEGV: altstack
>> Notifications: epoll
>> Architecture: x86
>> Disabled: none
>> Misc: softdebug
>> LLVM: supported, not enabled.
>> GC: Included Boehm (with typed GC and Parallel Mark)
>>
>> [mono-2.10] ~/projects/rovisualizer-dev/rovisualizer/bin/Debug @
>> ./profile.sh
>> Stacktrace:
>>
>>
>> Native stacktrace:
>>
>> mono-sgen() [0x80e391b]
>> mono-sgen() [0x8129e8b]
>> mono-sgen() [0x805d431]
>> [0x9c740c]
>> mono-sgen() [0x8189ea7]
>> mono-sgen(mono_object_new_alloc_specific+0x28) [0x81676b8]
>> mono-sgen(mono_object_new_specific+0x80) [0x81677b0]
>> mono-sgen(mono_exception_from_name_domain+0x3e) [0x8205ede]
>> mono-sgen(mono_exception_from_name+0x28) [0x8205f78]
>> mono-sgen(mono_get_exception_null_reference+0x23) [0x8206213]
>> mono-sgen() [0x80e4733]
>> mono-sgen() [0x8128866]
>> [0x128fce]
>> [0x15242c]
>> [0x1522bc]
>> [0x151768]
>> [0x155eb8]
>> [0x154f3c]
>> [0x1522dc]
>> [0x151768]
>> [0x151848]
>> [0x1512fc]
>> [0x151150]
>> [0x14f0a8]
>> [0x14ebd0]
>> [0x1a10e4]
>> [0x159ca4]
>> [0x14a36c]
>> [0xf50244]
>> [0x1415bc]
>> [0x141270]
>> [0x128d6c]
>> [0x128f1e]
>> mono-sgen() [0x80621c8]
>> mono-sgen(mono_runtime_invoke+0x3e) [0x81671ee]
>> mono-sgen(mono_runtime_exec_main+0xd8) [0x8169a28]
>> mono-sgen(mono_main+0x1878) [0x80bcdb8]
>> mono-sgen() [0x805707e]
>> /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x3ade37]
>> mono-sgen() [0x8056ed1]
>>
>> Debug info from gdb:
>>
>> Could not attach to process. If your uid matches the uid of the target
>> process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
>> again as the root user. For more details, see
>> /etc/sysctl.d/10-ptrace.conf
>> ptrace: Operation not permitted.
>>
>> =================================================================
>> Got a SIGSEGV while executing native code. This usually indicates
>> a fatal error in the mono runtime or one of the native libraries
>> used by your application.
>> =================================================================
>>
>> ./profile.sh: line 1: 25637 Aborted mono --gc=sgen
>> --profile=log:heapshot rovisualizer.exe
>>
>>
>>
>> On Mon, Oct 31, 2011 at 10:34 AM, Rodrigo Kumpera <kumpera at gmail.com>
>> wrote:
>> > Please try a more current version of mono such as 2.10.7, there have
>> > been
>> > sgen related fixes since 2.10.2.
>> >
>> > On Mon, Oct 31, 2011 at 12:25 PM, Nicholas Frechette <zeno490 at gmail.com>
>> > wrote:
>> >>
>> >> Hi,
>> >> I'm attempting to track down a memory leak in my application.
>> >> I managed to run heapshot a number of times as described in the wiki
>> >> page but unfortunately, now my application fails to start every time
>> >> with the profiler enabled.
>> >>
>> >> Running a debug build on ubuntu 11.04 + mono 2.10.2 produces:
>> >> [mono-2.10] ~/projects/rovisualizer-dev/rovisualizer/bin/Debug @ mono
>> >> --gc=sgen --profile=log:heapshot rovisualizer.exe
>> >> Stacktrace:
>> >>
>> >>
>> >> Native stacktrace:
>> >>
>> >> mono-sgen() [0x80e30eb]
>> >> mono-sgen() [0x81293ab]
>> >> mono-sgen() [0x805d3c1]
>> >> [0x54840c]
>> >> mono-sgen() [0x8188d47]
>> >> mono-sgen(mono_object_new_alloc_specific+0x28) [0x8166bd8]
>> >> mono-sgen(mono_object_new_specific+0x80) [0x8166cd0]
>> >> mono-sgen(mono_exception_from_name_domain+0x3e) [0x8204dbe]
>> >> mono-sgen(mono_exception_from_name+0x28) [0x8204e58]
>> >> mono-sgen(mono_get_exception_null_reference+0x23) [0x82050f3]
>> >> mono-sgen() [0x80e3f03]
>> >> mono-sgen() [0x8127d86]
>> >> [0x8fafc6]
>> >> [0xda520c]
>> >> [0xda49fe]
>> >> [0xda3f2a]
>> >> [0xda911e]
>> >> [0xda774c]
>> >> [0xda4a1e]
>> >> [0xda3f2a]
>> >> [0xda400a]
>> >> [0xda3c74]
>> >> [0xda3ac8]
>> >> [0xda18aa]
>> >> [0xda1588]
>> >> [0x3820e4]
>> >> [0xdadd26]
>> >> [0xd9e36c]
>> >> [0x37d13c]
>> >> [0x36858c]
>> >> [0x368222]
>> >> [0x8fad6e]
>> >> [0x8faf1c]
>> >> mono-sgen() [0x8062158]
>> >> mono-sgen(mono_runtime_invoke+0x3e) [0x816670e]
>> >> mono-sgen(mono_runtime_exec_main+0xd8) [0x8168f48]
>> >> mono-sgen(mono_main+0x1878) [0x80bc9d8]
>> >> mono-sgen() [0x805707e]
>> >> /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x126e37]
>> >> mono-sgen() [0x8056ed1]
>> >>
>> >> Debug info from gdb:
>> >>
>> >> Could not attach to process. If your uid matches the uid of the target
>> >> process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or
>> >> try
>> >> again as the root user. For more details, see
>> >> /etc/sysctl.d/10-ptrace.conf
>> >> ptrace: Operation not permitted.
>> >>
>> >> =================================================================
>> >> Got a SIGSEGV while executing native code. This usually indicates
>> >> a fatal error in the mono runtime or one of the native libraries
>> >> used by your application.
>> >> =================================================================
>> >>
>> >> Aborted
>> >>
>> >>
>> >> -------------------
>> >> Any ideas?
>> >> Thanks,
>> >> Nicholas
>> >> _______________________________________________
>> >> Mono-list maillist - Mono-list at lists.ximian.com
>> >> http://lists.ximian.com/mailman/listinfo/mono-list
>> >
>> >
>
>
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