Re: [Tarantool-patches] [PATCH luajit 2/2] profilers: purge generation mechanism

[Maxim Kokryashkin via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

[-- Attachment #1: Type: text/plain, Size: 1073 bytes --]


Hi, Sergey!
Sure, consider this script:
| jit.off()
| misc.sysprof.start{mode = 'C', interval=10}
| for i = 1, 1e7 do tostring(i) end
| misc.sysprof.stop()
 
After running it with luajit you can parse the output
like this:
| $ time -v luajit-parse-sysprof sysprof.bin
 
So, before the patch:
| Maximum resident set size (kbytes): 224928
 
And after the patch:
| Maximum resident set size (kbytes): 32780
 
Which is 85% reduction in memory consumption.
--
Best regards,
Maxim Kokryashkin
 
  
>Вторник, 5 сентября 2023, 14:53 +03:00 от Sergey Bronnikov <sergeyb@tarantool.org>:
> 
>Hi, Max
>
>thanks for the patch. See my comment below.
>
>
>On  8/28/23 18 :23, Maxim Kokryashkin wrote:
>> Since both of the profiler parsers are now processing
>> the events in a stream-like fashion, the generation
>> mechanism is excessive and can be purged. This results
>> in a significant memory consumption drop, especially
>> for the AVL-tree part.
>Would be interesting to see a numbers with memory consumption
>
>before and after the patch.
>
> 
 

[-- Attachment #2: Type: text/html, Size: 1869 bytes --]