Recent

« previous next »
Pages: [1]

Author Topic: How to determine maximum memory used by a program?  (Read 1420 times)

Robert.Thompson

  • Jr. Member
  • **
  • Posts: 56
  • "A very bad coder."
    • Google Voice for Canadians
How to determine maximum memory used by a program?
« on: December 31, 2017, 07:24:04 pm »
Hello:

Is there a way to determine the maximum amount of memory that my program used during its' execution?

Thanks,

Rob.
Logged
Lazarus:  1.8.4  2018-11-17
FPC:   3.0.4 x86_64-linux-gtk2
System:   Kernel: 4.15.0-39-generic x86_64 bits: 64 gcc: 7.3.0 Cinnamon 3.8.9 Linux Mint 19 Tara
              Phoenix v: 11JB.M044.20100622.hkk date: 06/22/2010
Intel Core i5 M 460 (-MT-MCP-) arch: Nehalem rev.5 cache: 3072 KB
NVIDIA GeForce 310M

marcov

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 9014
  • FPC developer.
Re: How to determine maximum memory used by a program?
« Reply #1 on: December 31, 2017, 07:39:12 pm »
You can get an idea using the values returned by this call:

https://www.freepascal.org/docs-html/rtl/system/getfpcheapstatus.html

The interpretation is a bit difficult though.
Logged

Robert.Thompson

  • Jr. Member
  • **
  • Posts: 56
  • "A very bad coder."
    • Google Voice for Canadians
Re: How to determine maximum memory used by a program?
« Reply #2 on: January 01, 2018, 03:48:32 pm »
Thank you. :)
Logged
Lazarus:  1.8.4  2018-11-17
FPC:   3.0.4 x86_64-linux-gtk2
System:   Kernel: 4.15.0-39-generic x86_64 bits: 64 gcc: 7.3.0 Cinnamon 3.8.9 Linux Mint 19 Tara
              Phoenix v: 11JB.M044.20100622.hkk date: 06/22/2010
Intel Core i5 M 460 (-MT-MCP-) arch: Nehalem rev.5 cache: 3072 KB
NVIDIA GeForce 310M

devEric69

  • Sr. Member
  • ****
  • Posts: 419
Re: How to determine maximum memory used by a program?
« Reply #3 on: May 16, 2019, 05:09:00 pm »
For information, if the cmem unit is somewhere in "uses" ( http://wiki.lazarus.freepascal.org/CMem ), then GetFPCHeapStatus returns 0 for all memory quantities (normal behaviour).
« Last Edit: May 16, 2019, 05:12:34 pm by devEric69 »
Logged
use: Linux 64 bits (Ubuntu 20.04 LTS).
Lazarus version: 2.0.4 (svn revision: 62502M) compiled with fpc 3.0.4 - fpDebug \ Dwarf3.
Pages: [1]
« previous next »
 

TinyPortal © 2005-2018