[eepro100] Performance prob. (again)

Nate Amsden subscriptions@graphon.com
Mon, 26 Feb 2001 14:15:29 -0800

Arthur Rinkel wrote:
> Hi,
> I'm having some disappointing results with a eepro100 (with i82557) and
> allthough I've tried several things to fix it, nothing helped so far...
> The (Rx) speed doesn't seem to exceed 2MB/s or so; the NIC is installed in
> a Pentium system running 133MHz. A TCP/IP stack "test" with a prg called
> ttcp resulted in a (top) speed of 5,8MB/s, so I'm guessing the CPU is
> capable of doing 4-5MB/s of network throughput. Or is this incorrect?

what are you doing that shows only 2MB/s ? if it's doing a file transfer
i'd be its the HDD that is the bottleneck. what are the rest of the specs
on that system? ram? hd? etc..

try running bonnie on the system or something else to see how fast
your disk can write(bonnie is a hdd benchmark). 2MB/s i would consider
fast for an IDE disk(during writes..reads are faster)

              -------Sequential Output-------- ---Sequential Input-- --Random--
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
          100  2084 78.5 11371 37.5  7752 57.3  2402 87.4 83453 91.3 7557.8 98.3

that's what i get on one of my systems. P3-800 512MB ECC ram, and that
particular drive is a 10.1GB IBM 7200RPM IDE drive. no special
hdparm tweaks or anything.


Nate Amsden
System Administrator