Subject: RE: zbufs for NetBSD
To: None <email@example.com, kyle.unice@L-3com.com>
From: None <kyle.unice@L-3com.com>
Date: 09/06/2002 14:11:31
Recieving and transmitting large volumes of data is where zbufs would be a
help. NetBSD on large data transmits of memory mapped files does a minimal
amount of coping, but recieving large amounts of data is another question.
Does NetBSD perform the same way when receiving data from the network to a
memory mapped file?
When recieving data that is measured in megabytes per second, and with
networks moving to 10 Megabytes (100Mbit/sec) to 100 Megabytes
(1000Mbits/sec), it would seem that doing a zero copy recieve would be
advantageous. Preallocating recieve buffers and managing VM tables would
seem a faster solution than memcpy when dealing with megabytes/sec data
From: Jason R Thorpe [mailto:firstname.lastname@example.org]
Sent: Friday, September 06, 2002 11:08 AM
Cc: email@example.com; firstname.lastname@example.org
Subject: Re: zbufs for NetBSD
On Fri, Sep 06, 2002 at 10:53:10AM -0600, kyle.unice@L-3com.com wrote:
> Just wanted to follow up and see what decision (if any) has been made
> zbufs and NetBSD.
No decision has been reached, as far as I can tell. I think I still need
a lot of convincing that they're really necessary :-)
-- Jason R. Thorpe <email@example.com>