[Winpcap-users] Using WipCap to reduce CPU%

[Donald Woo]

I believe it's from the socket read.

dw





Loris Degioanni <loris.degioanni at cacetech.com>
Sent by: winpcap-users-bounces at winpcap.org
08/29/2006 12:34 AM
Please respond to winpcap-users

 
        To:     winpcap-users at winpcap.org
        cc: 
        Subject:        Re: [Winpcap-users] Using WipCap to reduce CPU%


Is the cpu load caused by winpcap or by the read from the socket?
If the cause is WinPcap, You're definitely polling, and you should check 
the to_ms parameter of pcap_open_live().

Loris


Donald Woo wrote:
> 
> I'm writing a VB .Net app to captured TCP/IP data from a source,  it is 
> sending 406 byte packets approx. every 1 msec.  I can perform this 
> capture but at a very high cost to the
> cpu,  somewhere between 98-100% !!!!    This is just from calling the 
> stream read off the socket
> 
>                         'read data from socket
>                         Dim nNumReadBytes As Integer = 
> m_nsReadStream.Read(m_bReadBuffer, 0, g_nNumBytesToRead)
> 
> Can I use this to take the load off the cpu or do I need a packet 
> capture card?
> 
> 
> dw
> 
> 
> 
> 
> 
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