[Winpcap-users] pcap_sendqueue_transmit() has 128MB limit?
adagiograzioso at gmail.com
Mon Apr 27 20:34:11 PDT 2009
Sorry to jump in - but I'm curious. Why even 2-3 queues? Why not just
1 queue in a loop? (Assuming of course that we are transferring the
same packet and not transferring different types of packet which would
require 2-3 MB and hence 2-3 queues)
On Tue, Apr 28, 2009 at 4:32 AM, Gianluca Varenni
<gianluca.varenni at cacetech.com> wrote:
> I would just use a 2-3 queues and not much more than that.
> ----- Original Message -----
> From: "Janne Heikkinen" <janne.m.heikkinen at helsinki.fi>
> To: <winpcap-users at winpcap.org>
> Sent: Saturday, April 25, 2009 5:31 AM
> Subject: Re: [Winpcap-users] pcap_sendqueue_transmit() has 128MB limit?
>> Lainaus "Gianluca Varenni" <gianluca.varenni at cacetech.com>:
>>> Even if you need to transmit at gigabit rates, I wouldn't use a queue of
>>> more than 1-2 MB. Using large sendqueue reduces the number of system
>>> but it gives a hard time to the I/O manager because that large chunk of
>>> virtual address space needs to be paged in and locked into memory when
>>> driver needs to access it. This is extremely time consuming when you use
>>> large buffers.
>> So if I would use 1000 1MB send queues there wouldn't be much delay
>> between different queues?
>> - Janne
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