[pypy-dev] Are there any methods to view pypy gc log?

[Ryan Gonzalez]

On July 15, 2015 3:42:17 AM CDT, Yicong Huang <hengha.mao at gmail.com> wrote:
>Great thanks!
>We tried gc log, and got a piece of below output.
>However, it is hard to read.
>Is it possible to get some common metrics, e.g. timestamp of GC
>occourred,
>gc paused time, gc count?
>We found there is a tool gcanalyze.py might help. But the tool depends
>on
>rpython module.
>How to run the tool?

Grab the PyPy source. The rpython module is inside it.

>
>starting gc state:  SCANNING
>stopping, now in gc state:  MARKING
>[1cca56e7e5d61f] gc-collect-step}
>[1cca56e7e63793] {gc-collect-step
>starting gc state:  MARKING
>number of objects to mark 158 plus 59
>stopping, now in gc state:  SWEEPING
>[1cca56e820f113] gc-collect-step}
>[1cca56e8218863] {gc-collect-step
>starting gc state:  SWEEPING
>
>
>On Wed, Jul 15, 2015 at 4:03 PM, Maciej Fijalkowski <fijall at gmail.com>
>wrote:
>
>> PYPYLOG=gc:- would give you some idea, but nothing that can help you
>> tune the GC. We usually just measure total time with various GC
>> parameters
>>
>> On Wed, Jul 15, 2015 at 9:59 AM, Yicong Huang <hengha.mao at gmail.com>
>> wrote:
>> > From the document, we saw there are some GC tuning parameters.
>> > But we've no ideas how to evaluate the tuning.
>> > As for java, it is able to output friendly gc log.
>> > Are there any similar output avaiable in pypy?
>> >
>> > _______________________________________________
>> > pypy-dev mailing list
>> > pypy-dev at python.org
>> > https://mail.python.org/mailman/listinfo/pypy-dev
>> >
>>
>
>
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