Re: allocation memory in Java

2017-11-20 Thread Wojciech Kudla 
I don't think I had any issues with symbol resolution and stack unwinding
with the default fastdebug build (provided that the frame pointers are
preserved).
Can anyone shed some light on what the benefits of
 --with-native-debug-symbols=internal are?

On Mon, 20 Nov 2017, 21:56 John Hening,  wrote:

> With perf. OpenJDK might need to be configured with debug symbols:
>> --with-native-debug-symbols=internal
>>
>
> @Aleksey, when I try to configure openjdk8 with that option I get an error:
>
> configure: error: unrecognized options: --with-native-debug-symbols
>
>
> Exactly, I I downloaded jdk8u and I
>
> ./configure --enable-debug --with-freetype-include=/usr/include/freetype2/
> --with-freetype-lib=/usr/lib/x86_64-linux-gnu/ --with-native-debug-symbols
> =internal
>
> Can you help?
>
>
>
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Re: allocation memory in Java

2017-11-20 Thread John Hening 

>
> With perf. OpenJDK might need to be configured with debug symbols: 
> --with-native-debug-symbols=internal 
>

@Aleksey, when I try to configure openjdk8 with that option I get an error:

configure: error: unrecognized options: --with-native-debug-symbols


Exactly, I I downloaded jdk8u and I  

./configure --enable-debug --with-freetype-include=/usr/include/freetype2/ 
--with-freetype-lib=/usr/lib/x86_64-linux-gnu/ --with-native-debug-symbols=
internal

Can you help?

 

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Re: allocation memory in Java

2017-11-20 Thread Aleksey Shipilev 
On 11/18/2017 01:45 PM, John Hening wrote:
> Thanks for your replies :)
> 
> @Aleksey, how to get that?
> 
> |-17.12%0.00%org.openjdk.Allperf-31615.map-0x7faaa3b2d125-16.59%OptoRuntime::new_instance_C
> -11.49%InstanceKlass::allocate_instance 
> 2.33%BlahBlahBlahCollectedHeap::mem_allocate  point to GC 0.35%AllocTracer::send_allocation_outside_tlab_event|
> 
> I mean, how to get a such stacktrace with profiling information? I see 
> perf-31615.map what indicates
> on perf.

With perf. OpenJDK might need to be configured with debug symbols: 
--with-native-debug-symbols=internal

-Aleksey



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