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ExecutorElassus
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PostPosted: Mon Dec 10, 2012 10:35 pm    Post subject: Audacious is leaking memory? Reply with quote

So, this is weird. For me, the lates version of audacious (3.3.2 presently, but also a version before) steadily increases its memory footprint. I'm not sure what's doing it (it's just sitting there with playback stopped) but after a day it's taking up over 500MB.

Is there any way to track this issue down? To find out what exactly is causing the leakage?

Cheers,

EE
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audiodef
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PostPosted: Tue Dec 11, 2012 2:11 pm    Post subject: Reply with quote

If you start it from a terminal, does it produce any output?
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ExecutorElassus
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PostPosted: Thu Dec 13, 2012 5:32 pm    Post subject: Reply with quote

no terminal output (sorry for the delay; I wanted to run it for a couple days from a terminal to check), but if I attach strace to it, I get a nonstop scroll of this:

Code:
writev(3, [{"5\30\4\0\330_k\2\23\0`\2r\0\r\0\212\4\6\0\331_k\2\330_k\2D\2\0\0"..., 372}, {NULL, 0}, {"", 0}], 3) = 372
recvfrom(3, "A\0\311f\330_k\2\3\0\202\0+\0`\2\0\20\10\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 0, NULL, NULL) = 128
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 3, 0) = 0 (Timeout)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 3, 248) = 1 ([{fd=3, revents=POLLIN}])
recvfrom(3, "U\2\322f\354\"\220*\3\24\4\0\20\0\0\0\0\0\0\24\24\24\24\24\0\0\3\37%\2\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 3, 152) = 0 (Timeout)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 3, 0) = 0 (Timeout)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(3, 0x67f2f4, 4096, 0, 0, 0)    = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=3, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=3, revents=POLLOUT}])
Any ideas what that's all about?

Cheers,

EE
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franzf
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PostPosted: Fri Dec 14, 2012 1:22 am    Post subject: Reply with quote

Could you install valgrind and run audacious through it?
$ valgrind --leak-check=full audacious
It will produce a leak summary when you close audacious. (probably you want to pipe it into a file as it's likely to get much)

Alternatively (if the memcheck does not tell you there is a memory leak) you can use massif
$ valgrind --tool=massif audacious
You will get a massif.log, which you can upload somewhere in link here (you may also want to have a look at it with massif-visualizer)
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ExecutorElassus
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PostPosted: Sat Dec 15, 2012 10:45 pm    Post subject: Reply with quote

well this is weird.

After a few days, I noticed boincmgr doing the same thing as audacious, with a similar output in strace. So this might not be audacious at all, but both of them trying to query/write something that isn't working.

I'll check out valgrind, and let you know what it spits out.

Cheers,

EE
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ExecutorElassus
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PostPosted: Sun Dec 16, 2012 12:16 am    Post subject: Reply with quote

sigh. valgrind says:

Code:
==8571== Memcheck, a memory error detector
==8571== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==8571== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==8571== Command: audacious
==8571== Parent PID: 28262
==8571==

valgrind:  Fatal error at startup: a function redirection
valgrind:  which is mandatory for this platform-tool combination
valgrind:  cannot be set up.  Details of the redirection are:
valgrind: 
valgrind:  A must-be-redirected function
valgrind:  whose name matches the pattern:      strlen
valgrind:  in an object with soname matching:   ld-linux-x86-64.so.2
valgrind:  was not found whilst processing
valgrind:  symbols from the object with soname: ld-linux-x86-64.so.2
valgrind: 
valgrind:  Possible fixes: (1, short term): install glibc's debuginfo
valgrind:  package on this machine.  (2, longer term): ask the packagers
valgrind:  for your Linux distribution to please in future ship a non-
valgrind:  stripped ld.so (or whatever the dynamic linker .so is called)
valgrind:  that exports the above-named function using the standard
valgrind:  calling conventions for this platform.  The package you need
valgrind:  to install for fix (1) is called
valgrind: 
valgrind:    On Debian, Ubuntu:                 libc6-dbg
valgrind:    On SuSE, openSuSE, Fedora, RHEL:   glibc-debuginfo
valgrind: 
valgrind:  Cannot continue -- exiting now.  Sorry.

so, uh, dumb question: what's the package that provides debugging for glibc on gentoo?

Cheers,

EE
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franzf
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PostPosted: Sun Dec 16, 2012 5:03 am    Post subject: Reply with quote

put "-ggdb" into your CFLAGS and check the FEATURES-Variable: you want to set "splitdebug". Check "man make.conf" if you are unsure.

// edit:
Of course you need to rebuild glibc to make use of the new CFLAGS/FEATURES ;)
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