[Winpcap-users] pcap_sendqueue_transmit() has 128MB limit?

Janne Heikkinen janne.m.heikkinen at helsinki.fi
Sat Apr 25 05:31:26 PDT 2009

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 calls,
> 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 the
> 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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