[3659] in linux-net channel archive
Performance numbers for 100Mb/s adapters
daemon@ATHENA.MIT.EDU (Rakesh Dubey)
Sat Jul 13 01:48:52 1996
Date: Thu, 11 Jul 1996 16:21:37 -0700
From: Rakesh Dubey <rakesh@arp.com>
To: linux-net@vger.rutgers.edu
Reply-to: rakesh@arp.com
The de4x5 driver source (for DECchip21x40 based adapters) has the
following lines:
The driver has been tested on a relatively busy network using the DE425,
DE434, DE435 and DE500 cards and benchmarked with 'ttcp': it transferred
16M of data to a DECstation 5000/200 as follows:
TCP UDP
TX RX TX RX
DE425 1030k 997k 1170k 1128k
DE434 1063k 995k 1170k 1125k
DE435 1063k 995k 1170k 1125k
DE500 1063k 998k 1170k 1125k in 10Mb/s mode
All values are typical (in kBytes/sec) from a sample of 4 for each
measurement. Their error is +/-20k on a quiet (private) network and also
depend on what load the CPU has.
Has anyone done similar tests for 100Mb/s adapters? Any idea of
performance? What I am interested in how much can Linux saturate 100Mb
networks (i.e. is it CPU bound or I/O bound)? Some numbers that I have
seen from Windows/Netware land seem to indicate that these operating
systems can deliver upto 80-90Mb/s traffic (non-UDP) while using about
20-25% of CPU.
Any ideas/hints/guesses appreciated. Thanks.
-rakesh
