At 06:13 PM 08/29/01 +0200, jmruiz@boe.es wrote:
>In solaris I get the following:
>  SZ
> 103  << Before malloc
>  SZ
>13311  << After malloc
>  SZ
>13311   << after first free
>  SZ
>13311   << second malloc - memory reused
>  SZ
>13311   << after second  free
>
>So, in Solaris, the memory is not returned to the OS, even if we do
>not longer use part of it. 

Are you sure that's not an issue with the OS *reporting* the memory?  Seems
amazing that the OS wouldn't get the memory back.

I just ran on FreeBSD 4.3-STABLE with minor change to ps:

  VSZ  RSS
  856  364
  VSZ  RSS
98620  480
  VSZ  RSS
 1024  480
  VSZ  RSS
10792  480
  VSZ  RSS
 1024  480

Here's my Linux machine:

  VSZ  RSS
 1108  356
  VSZ  RSS
98768  372
  VSZ  RSS
 1108  368
  VSZ  RSS
10876  372
  VSZ  RSS
 1108  368

And here's Solaris 2.6:
  SZ  VSZ  RSS
 103  824  632
  SZ  VSZ  RSS
12311 98488  648
  SZ  VSZ  RSS
12311 98488  648
  SZ  VSZ  RSS
12311 98488  656
  SZ  VSZ  RSS
12311 98488  656




Bill Moseley
mailto:moseley@hank.org