Wireshark-dev: Re: [Wireshark-dev] New packet list - out of memory?
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From: Bill Meier <wmeier@xxxxxxxxxxx>
Date: Mon, 05 Oct 2009 12:58:20 -0400
Anders Broman wrote:

Hi,
Experimenting loading the file there is 163 calls to VirtualAlloc()
~1.630 GB memory used
Changing #define EMEM_ALLOCS_PER_CHUNK (EMEM_PACKET_CHUNK_SIZE / 512) 
to:
#define EMEM_ALLOCS_PER_CHUNK (EMEM_PACKET_CHUNK_SIZE / 64)

Gives only 26 VirtualAlloc() so it seems like we waist a huge amount of
memory...
15 VirtualAlloc() with 32 bytes.

Is there a reason not to change to:
#define EMEM_ALLOCS_PER_CHUNK (EMEM_PACKET_CHUNK_SIZE / 32) ?
A data point: A few days ago while working on bug #2375 I noticed that on Windows that if I defined the env logicals to not use se_alloc & etc that *much* less memory was required to load a capture. (20% of that used with se_alloc & etc ? I don't quite remember). 

I haven't yet tried this on Linux.


Bill