Memory allocation for beginner

[7teendev 1]

Hello, 

to begin with, I'm a beginner when it comes to optimization/debugging.
I was looking for possible ways to find server side memory allocation, what is taking up the most/not getting cleaned(memory leak) etc. Because currently my 4 core, ch99 core + db are taking 3,5Gb of RAM.
Does anyone here have experience with jemalloc, Heaptrack, possibly Valgrind?
Which one is best to use in my position?

Honestly I've also tried

 

but I'm not too wise with the OUTPUT.

I'd be grateful for any advice and thank you in advance!

[Punszz 0]

Valrgrind wont help you too much in finding memory leaks, leaks in m2 are much more deeper for valgrind to find..

You better use address sanitizer

[7teendev 1]

Hopefully I will manage.. not many threads about this issue anywhere

Thanks for the direction

I'm finally going somewhere(nowhere) 

==15740==ERROR: AddressSanitizer: heap-use-after-free on address 0x2b90a7b1 at pc 0x290c1671 bp 0xffbf8668 sp 0xffbf8240
READ of size 1 at 0x2b90a7b1 thread T0
    #0 0x290c1670  (/usr/local/lib/gcc11/libasan.so.6+0x48670)
    #1 0x290c1e7c  (/usr/local/lib/gcc11/libasan.so.6+0x48e7c)
    #2 0x8b022c9  (/usr/home/src/Srcs/Server/game/game_r41226+0x8b022c9)
    #3 0x83a326b  (/usr/home/src/Srcs/Server/game/game_r41226+0x83a326b)
    #4 0x83a7dfb  (/usr/home/src/Srcs/Server/game/game_r41226+0x83a7dfb)
    #5 0x892ffa1  (/usr/home/src/Srcs/Server/game/game_r41226+0x892ffa1)
    #6 0x8930c44  (/usr/home/src/Srcs/Server/game/game_r41226+0x8930c44)
    #7 0x89332ee  (/usr/home/src/Srcs/Server/game/game_r41226+0x89332ee)
    #8 0x80a43dc  (/usr/home/src/Srcs/Server/game/game_r41226+0x80a43dc)

0x2b90a7b1 is located 1 bytes inside of 65-byte region [0x2b90a7b0,0x2b90a7f1)
freed by thread T0 here:
    #0 0x290f6d5b  (/usr/local/lib/gcc11/libasan.so.6+0x7dd5b)
    #1 0x83a3253  (/usr/home/src/Srcs/Server/game/game_r41226+0x83a3253)
    #2 0x83a7dfb  (/usr/home/src/Srcs/Server/game/game_r41226+0x83a7dfb)
    #3 0x892ffa1  (/usr/home/src/Srcs/Server/game/game_r41226+0x892ffa1)
    #4 0x8930c44  (/usr/home/src/Srcs/Server/game/game_r41226+0x8930c44)
    #5 0x89332ee  (/usr/home/src/Srcs/Server/game/game_r41226+0x89332ee)
    #6 0x80a43dc  (/usr/home/src/Srcs/Server/game/game_r41226+0x80a43dc)
    #7 0x80a453f  (/usr/home/src/Srcs/Server/game/game_r41226+0x80a453f)

previously allocated by thread T0 here:
    #0 0x290f5f63  (/usr/local/lib/gcc11/libasan.so.6+0x7cf63)
    #1 0x8488486  (/usr/home/src/Srcs/Server/game/game_r41226+0x8488486)
    #2 0x848894b  (/usr/home/src/Srcs/Server/game/game_r41226+0x848894b)
    #3 0x847f14f  (/usr/home/src/Srcs/Server/game/game_r41226+0x847f14f)
    #4 0x83afeef  (/usr/home/src/Srcs/Server/game/game_r41226+0x83afeef)
    #5 0x892f14b  (/usr/home/src/Srcs/Server/game/game_r41226+0x892f14b)
    #6 0x8930d6b  (/usr/home/src/Srcs/Server/game/game_r41226+0x8930d6b)
    #7 0x89332ee  (/usr/home/src/Srcs/Server/game/game_r41226+0x89332ee)
    #8 0x80a43dc  (/usr/home/src/Srcs/Server/game/game_r41226+0x80a43dc)
    #9 0x80a453f  (/usr/home/src/Srcs/Server/game/game_r41226+0x80a453f)

SUMMARY: AddressSanitizer: heap-use-after-free (/usr/local/lib/gcc11/libasan.so.6+0x48670)
Shadow bytes around the buggy address:
  0x457214a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x457214b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x457214c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x457214d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x457214e0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
=>0x457214f0: 00 fa fa fa fa fa[fd]fd fd fd fd fd fd fd fd fa
  0x45721500: fa fa fa fa 00 00 00 00 00 00 00 00 00 fa fa fa
  0x45721510: fa fa 00 00 00 00 00 00 00 00 00 fa fa fa fa fa
  0x45721520: 00 00 00 00 00 00 00 00 00 fa fa fa fa fa 00 00
  0x45721530: 00 00 00 00 00 00 00 fa fa fa fa fa 00 00 00 00
  0x45721540: 00 00 00 00 00 fa fa fa fa fa 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==15740==ABORTING

 

[7teendev 1]

As this comment suggests: LINK

Wouldn't be easier to compile the source into windows(visual code) and debug it from there? Maybe it would be easier?

Edited March 18 by 7teendev

[7teendev 1]

Does anyone know, what should the next steps be? 

[WeedHex 627]

38 minutes ago, 7teendev said:

Does anyone know, what should the next steps be? 

Using Visual Studio features. 

[7teendev 1]

We are talking about server side, so compile it somehow to windows version and run it under visual?

That's about as hard as using AddressSanitizer  

[Punszz 0]

33 minutes ago, 7teendev said:

We are talking about server side, so compile it somehow to windows version and run it under visual?

That's about as hard as using AddressSanitizer  

You compile under freebsd using sanitize flags, asan works only on gcc with share linking