Hi
I'm sure that Robert can provide us with some interesting numbers.
I have just tested routing performance on a AMD opteron 270 (dual core),
here I can route 400 kpps (tg3 netcards on PCI-X). I use the kernel
module "pktgen" to generate the packets (64 bytes in size).
Cheers,
Jesper Brouer
--
-------------------------------------------------------------------
MSc. Master of Computer Science
Dept. of Computer Science, University of Copenhagen
Author of http://www.adsl-optimizer.dk
-------------------------------------------------------------------
On Wed, 31 May 2006, Andreas John wrote:
Hi,
Maybe:
Khan, Sohel; Waheed, Abdul (2003): High Performance Routing on
PCshttp://www.ccse.kfupm.edu.sa/~sohel/networking/references/Routing.pdf
A rule of thumb:
- with current COTS hardware and (standard) PCI Bus, you can reach the
maximum of the PCI bus bandwidth. That's 1 GB/s, e.h. two NICs with 500
Meg/s each ( one in and one out )
- with PCI-X and in the future PCI-express you'll for sure be able to
reach more performance. I didnt find a sponsor for a test-lab yet :)
- in DoS secnarios it may get worse :/ I heavily depends on driver type
(polling and NAPI preferred). The problem with the performace is
_always_ the number of interrupts, nothing else is a bottleneck (well,
we didn't talk about thousands of iptables rules yet, but you ask for a
'maximum').
- The question you have to ask in high-performance scenarios is not
"MBit/s" but MPPS (megapackets per seconds). FreeBSD and Linux broke the
1 MPPS barrier some time ago (on dual xeons).
rgds,
Andreas
Fermín Galán Márquez wrote:
Hi,
I wonder about the performance of a Linux box used as router (I guest I'm
not the first :). Althought I know it mainly depends on the hardware, I'm
trying to find some references on the topic or comparations with other
routing solutions (FreeBSD box used as router, Cisco, etc). For example,
http://facweb.cti.depaul.edu/jyu/Publications/Yu-Linux-TSM2004.pdf
(althought is related with Linux-briding more than with Linux-routing) shows
in Figure 14 that with an AMD Duron 1.3GHz 512M RAM a throughput of 90 Mbps
can be achieved.
Anybody knows any other similar analysis, please?
Best regards,
--------------------
Fermín Galán Márquez
CTTC - Centre Tecnològic de Telecomunicacions de Catalunya
Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860
Castelldefels, Spain
Room 1.02
Tel : +34 93 645 29 12
Fax : +34 93 645 29 01
Email address: [EMAIL PROTECTED]
_______________________________________________
LARTC mailing list
LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
