Re: Linux and Network Flight Recorder

Jamie Lokier (lkd@tantalophile.demon.co.uk)
Thu, 24 Jun 1999 00:37:25 +0200

yodaiken@chelm.cs.nmt.edu wrote:
> Is it known that zero copy is the only way to deliver this? Last time
> I looked at it, memory was much faster than networks.

Zero-copy delivers.
Some benchmarks from a user-space network implementation:

Zero-copy 115Mbyte/s 6% CPU
Single-copy 82Mbyte/s 97% CPU

- Alteon ACEnic Tigon-2 PCI
- 400MHz Pentium II (single processor)
- BX chipset
- 64Mb main memory
- 512k L2 cache

I don't very much is actually _done_ with that data though.

enjoy,
-- Jamie

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