VBart Wrote:

> It most likely that your system memory allocator do not return freed
> memory to the OS.

How can I check this? I suspect this should be part of the OS (Linux)? Could you give me any keyword to read more about this?

I looked at /proc/meminfo after the first and second batch of requests.
The newly allocated memory is categorized as "Active(anon)":

> Active: 36976 kB
> Inactive: 59280 kB
> Active(anon): 34376 kB
> ..
> AnonPages: 34400 kB

vs.

> Active: 71092 kB
> Inactive: 60088 kB
> Active(anon): 68428 kB
> ..
> AnonPages: 68452 kB

Thanks.
Peter