[2870] in linux-net channel archive
Re: Slow ethernet/NE2000 with all 1.3 kernels (1.2 is fine)
daemon@ATHENA.MIT.EDU (SkiBum)
Sat May 11 16:43:45 1996
Date: Thu, 9 May 1996 11:56:33 -0300 (ADT)
From: SkiBum <p7gz@unb.ca>
To: Jamie Lokier <jamie@rebellion.co.uk>
cc: Paul Gortmaker <gpg109@rsphy1.anu.edu.au>, linux-kernel@vger.rutgers.edu,
linux-net@vger.rutgers.edu
In-Reply-To: <m0uGv01-000Lq3C@phascolarctid.rebellion.co.uk>
On Tue, 7 May 1996, Jamie Lokier wrote:
> I've done some tests sending raw ethernet packets using SOCK_PACKET,
> with 1.2.13 and 1.3.81 on exactly the same machine. The software
> configuration is identical (I simply brought up different kernels).
> The program is included at the end of this message so people can see if
> the same problem exists with non-NE2000 cards.
>
> I hope SOCK_PACKET has abolutely nothing to with the TCP window. The
> ISA bus speed is the same for both kernels, as it's the same machine
> within a few minutes.
>
> New summary: 1.2.13 -> ~ 1197k/s raw data transmission rate
> 1.3.81 -> ~ 745k/s raw data transmission rate
>
> Included below are the detailed results and the program.
>
> Enjoy,
> -- Jamie Lokier
>
> Results:
>
> Linux 1.2.13:
>
> mustelid:~# ./etherspray
> Transmitted 7570000 bytes in 6.321147 seconds (1197.6k/sec).
>
> Linux 1.3.81:
>
> mustelid:~# ./etherspray
> Socket destroy delayed (r=0 w=64740)
> Transmitted 7570000 bytes in 10.091485 seconds (750.1k/sec).
>
> Linux 1.3.97 gives similar results to 1.3.81. (I tested it on
> a similar, but different machine).
I get pretty good performance on 1.3.99.
abyss ~ #./etherspray
Transmitted 7570000 bytes in 6.125325 seconds (1235.9k/sec).
abyss ~ #./etherspray
Transmitted 7570000 bytes in 6.123016 seconds (1236.3k/sec).
abyss ~ #./etherspray
Transmitted 7570000 bytes in 6.123433 seconds (1236.2k/sec).
That's on a 3-Com 3c595 running in 10MBit mode.
Brad Borgald Networks
Computing Services University of New Brunswick
Fredericton New Brunswick, Canada, Electrical Engineering
p7gz@unb.ca root@force.crt .unb.ca bborgald@hhnov1.unb.ca
Linux! Solomon, No Fear! GUS PnP, The North Face
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