Re: Memory trashing? Virtual memory question.

From	mhx@iae.nl (mhx)
Newsgroups	comp.lang.forth
Subject	Re: Memory trashing? Virtual memory question.
Date	2024-09-30 15:21 +0000
Organization	novaBBS
Message-ID	<d039b668ce34bd3330fcb4497d8649b7@novabbs.com> (permalink)
References	<nnd$0b021237$626a8881@55133cc8c31c4c51> <nnd$56a65fea$30328e9e@fe5292c2aea63e4d> <f9e2a709183796c9cee0d60d24b0cf89@www.novabbs.com> <nnd$70fe424a$27f9d60b@74640bc44a399edf>

Show all headers | View raw

On Mon, 30 Sep 2024 9:53:32 +0000, albert@spenarnc.xs4all.nl wrote:

I played around with it some more on Windows 11.

FORTH> .TICKER-INFO
AMD Ryzen 7 5800X 8-Core Processor, timer & PROCESSOR-CLOCK of 4192MHz
Peak WorkingSetSize    = 650 kB
Current WorkingSetSize = 631 kB
Total memory size      = 31 GB
Available memory size  = 16 GB
 ok
FORTH> 0 VALUE am1  ok
FORTH> TIMER-RESET   #2000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.215 seconds elapsed. ok

FORTH> TIMER-RESET   #2000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.155 seconds elapsed. ok

Faster the second time.

FORTH> TIMER-RESET   #8000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.902 seconds elapsed. ok

FORTH> TIMER-RESET   #8000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.616 seconds elapsed. ok

FORTH> TIMER-RESET   #8000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.583 seconds elapsed. ok

FORTH> TIMER-RESET   #8000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.586 seconds elapsed. ok

With 8 GB the OS apparently is busy in the background and takes 4x as
long, a linear increase.

FORTH> TIMER-RESET   #1000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.076 seconds elapsed. ok

If we go back to 1 GB the memory/diskspace is apparently pooled.

FORTH> TIMER-RESET   #12000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 1.120 seconds elapsed. ok

The timing suggests that the pool is increased, not build from 0.

FORTH> TIMER-RESET   #12000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.908 seconds elapsed. ok
FORTH> TIMER-RESET   #12000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.881 seconds elapsed. ok

FORTH> TIMER-RESET   #12000000000 ALLOCATE ?ALLOCATE TO am1  .ELAPSED 
am1 FREE ?ALLOCATE 0.883 seconds elapsed. ok

FORTH> .TICKER-INFO
AMD Ryzen 7 5800X 8-Core Processor, timer & PROCESSOR-CLOCK of 4192MHz
Peak WorkingSetSize    = 12075 kB
Current WorkingSetSize = 631 kB
Total memory size      = 31 GB
Available memory size  = 16 GB

The WorkingSetSize reflects the program's size + allocated memory.
AFAIR, this was a lot worse a few years ago.
Mysteriously, available memory size is still 16 GB.

-marcel

Back to comp.lang.forth | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-09-23 14:18 +0200
  Re: Memory trashing? Virtual memory question. David Schultz <david.schultz@earthlink.net> - 2024-09-23 08:27 -0500
    Re: Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-09-24 11:47 +0200
      Re: Memory trashing? Virtual memory question. Schlomo Goldberg <schlomo.goldberg@mailinator.com> - 2024-10-10 19:38 +0000
        Re: Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-10-11 10:37 +0200
  Re: Memory trashing? Virtual memory question. anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2024-09-23 16:48 +0000
    Re: Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-09-24 14:33 +0200
      Re: Memory trashing? Virtual memory question. Paul Rubin <no.email@nospam.invalid> - 2024-09-24 11:11 -0700
  Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-23 17:51 +0000
    Re: Memory trashing? Virtual memory question. minforth@gmx.net (minforth) - 2024-09-23 18:19 +0000
      Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-23 19:10 +0000
        Re: Memory trashing? Virtual memory question. minforth@gmx.net (minforth) - 2024-09-24 07:47 +0000
  Re: Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-09-24 14:20 +0200
    Re: Memory trashing? Virtual memory question. antispam@fricas.org (Waldek Hebisch) - 2024-09-30 02:40 +0000
    Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-30 07:26 +0000
      Re: Memory trashing? Virtual memory question. albert@spenarnc.xs4all.nl - 2024-09-30 11:53 +0200
        Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-30 15:21 +0000
          Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-30 17:42 +0000
            Re: Memory trashing? Virtual memory question. mhx@iae.nl (mhx) - 2024-09-30 21:50 +0000
      Re: Memory trashing? Virtual memory question. John Ames <commodorejohn@gmail.com> - 2024-09-30 07:54 -0700

csiph-web