lkml.org 
[lkml]   [2001]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Question] Explanation of zero-copy networking
> considered to be in the "window of scarcity" (today we have 100MBit
> Ethernets and 133++MB/s PCI). Tomorrow our operating system concepts
> have to cope with 1, 10, ?? Gigabit Ethernets, Infiniband ,
> ... who knows.

We had to write our own RPC mechanism because with the standard-stacks
we had no chance of achieving our goals. We would have loved to use
tcp/ip but it was not possible with Linux 2.2.
Today we achieve almost 200MB/s over our RPC stack and this with the
CPU's almost idle. With TCP/IP and Gig-E we only came up to 60-70MB/s
and then the system was completely busy and unresponsive (Linux 2.4 is
supposed to be better but I doubt that we get a CPU load this low
without zerocopy networking).

We would like to look at the zerocopy ideas of Linux 2.4 and try to
implement our RPC mechanism over zerocopy-TCP (if something like this
exists). We just started with this idea and don't know exactly where to
start yet (we are looking for something like a de-facto zerocopy
standard for sockets)... Any ideas are welcome.

Reto
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:52    [W:0.087 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site