From owner-freebsd-hackers  Mon Dec  3  1:21:58 2001
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To: Matthew Dillon <dillon@apollo.backplane.com>
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Subject: Re: Patch #3 (TCP / Linux / Performance) 
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Date: Mon, 03 Dec 2001 11:21:52 +0200
From: Danny Braniss <danny@cs.huji.ac.il>
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this is what i get, it's between a dell 2540 (dual PIII/900) and an Intel Sl2
(dual PIII/1g). both are using intel's em driver.

majadara> ./tbench 1 bagel
Throughput 12.4785 MB/sec (NB=15.5981 MB/sec  124.785 MBit/sec)
majadara> ./tbench 2 bagel
Throughput 18.1598 MB/sec (NB=22.6998 MB/sec  181.598 MBit/sec)
majadara> ./tbench 4 bagel
Throughput 26.966 MB/sec (NB=33.7076 MB/sec  269.66 MBit/sec)
majadara> ./tbench 6 bagel
Throughput 31.4915 MB/sec (NB=39.3644 MB/sec  314.915 MBit/sec)
majadara> ./tbench 8 bagel
Throughput 33.6752 MB/sec (NB=42.0939 MB/sec  336.752 MBit/sec)
./tbench 10 bagel
Throughput 34.8712 MB/sec (NB=43.589 MB/sec  348.712 MBit/sec)
./tbench 15 bagel
Throughput 37.002 MB/sec (NB=46.2526 MB/sec  370.02 MBit/sec)
 ./tbench 20 bagel
Throughput 37.0574 MB/sec (NB=46.3217 MB/sec  370.574 MBit/sec)

it starts very nice, but maxes out at about 37MB/sec.
btw, before the patch tbench was moving bits (not bytes :-) at turtle speed
(i thought that it was hung, but tcpdump showed some trafffic :-)

good work! now lets see if nfs/tcp is ok again.

danny



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