[rescue] SS5 mobo

Gerhard Lenerz mail at g-lenerz.de
Tue Mar 2 16:56:49 CST 2004


Tuesday, March 2, 2004, 11:26:25 PM, you wrote:

>> But it had woefully poor memory bandwidth, which saturated at
>> 2.5-5 Megabytes/s depending on the wait state jumper setting.
> That is to low to be reasonible. Maybe 25 to 50 MB/s, but not 2.5 to 5
> MB/s. 2.5 to 5 MB/s is about the speed of the QBus or a quite old SCSI
> disk. Even a VME based Sun4 should have more memory bandwidth.

  if that does say anything in this case - my own measurements with
  STREAM on SS4 (not SS5!) ended in the 50-80MB range depending on the
  CPU frequency and which part of STREAM you are looking at.


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