[Winpcap-users] What's the upper limit of buffer size?

[Gianluca Varenni]

The upper limit depends on a number of factors. In any case the maximum amount of memory available in kernel mode is in the order of 200MB for a 32bit version of Windows, and 128GB on a 64bit one.

Why do you want to increase the kernel buffer size? As Guy Harris already pointed out on Wireshark-users, increasing the buffer size is a temporary solution: if you are losing packets because your application is too slow (or your disk is too slow), you will keep losing packets.

Have a nice day
GV



  ----- Original Message ----- 
  From: jli 
  To: winpcap-users at winpcap.org 
  Sent: Sunday, March 22, 2009 7:54 PM
  Subject: [Winpcap-users] What's the upper limit of buffer size?


  Hi guys:

        I use winpcap to capture data at 640Mhz and found data drop, when I set kernel buffer to 128MB , winpcap told me that there was no sufficient space, and I just can set it to

  127MB.  Can I get larger kernel buffer ? my laptop has 2 GB physical memory and 1G available.

        



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