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2014 Jan 26
1
Icecast 2.4 beta4 memory leak
Hello!
I started the IceCast using Valgrind, just like you suggested before.
It started with ~37MB of residend memory used by the Valgrind process
and then started to grow steadily after the IceS stream start.
I waited till the memory used by Valgrind reached ~79MB and stopped
the IceS stream. The Valgrind memory usage also stopped to grow. I
waited for several hours and checked the memory again. It showed only a
negligible memory usage growth.
So one may conclude that the Icecast memory usage grows ONLY when
some IceS stream is connected to it. I don't...
2012 Apr 17
2
[LLVMdev] InstCombine adds bit masks, confuses self, others
...enchmarks/SciMark2-C/scimark2 27.491 23.596 -14.2% -66mB
MultiSource/Benchmarks/Olden/bisort/bisort 0.360 0.428 +19.0% +75mB
MultiSource/Benchmarks/Olden/bh/bh 1.074 1.287 +19.9% +79mB
(Running on Sandy Bridge, x86-64)
I'll try to figure out why.
/jakob
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2012 Apr 16
0
[LLVMdev] InstCombine adds bit masks, confuses self, others
On Tue, Apr 17, 2012 at 12:23 AM, Jakob Stoklund Olesen <stoklund at 2pi.dk>wrote:
> I am not sure how best to fix this. If possible, InstCombine's
> canonicalization shouldn't hide arithmetic progressions behind bit masks.
The entire concept of cleverly converting arithmetic to bit masks seems
like the perfect domain for DAGCombine instead of InstCombine:
1) We know the
2014 Jan 26
3
Icecast 2.4 beta4 memory leak
Hi,
On 01/25/2014 11:47 PM, v_2e at ukr.net wrote:
> I have tested the newly released IceCast 2.4beta4 and again found a
> noticeable memory leak in it.
Can you please run Icecast under Valgrind?
I'm personally using:
valgrind -v --time-stamp=yes --leak-check=full --show-reachable=yes
icecast -c /etc/icecast2/icecast.xml
With our experiments so far we were not able to see such
2012 Apr 16
5
[LLVMdev] InstCombine adds bit masks, confuses self, others
Look at this silly function:
$ cat small.c
unsigned f(unsigned a, unsigned *p) {
unsigned x = a/4;
p[0] = x;
p[1] = x+x;
return p[1] - 2*p[0];
}
GCC turns this into straightforward code and figures out the 0 return value:
shrl $2, %edi
movl %edi, (%rsi)
addl %edi, %edi
movl %edi, 4(%rsi)
movl $0, %eax
ret
LLVM optimizes the code:
$ clang -O -S -o- small.c -emit-llvm
define i32