On Mon, 29 Sep 2008, Arno J. Klaassen wrote:
However, the "request/respones" tests are awfull for my notebook (test
repeated on the notebook for the sake of conviction) :
Is it possible to rerun these tests with a 7.0 kernel of the same general
configuration? That would help us determine if it's a regression between 7.0
and 7.1, or perhaps a more general issue between 6.x and 7.x. I wouldn't
reject a hardware, driver, or general stack issue at this point as things are
still fairly unclear. If it's definitely between 7.0 and 7.1 that the problem
arises, trying a series of kernels spaced at, say, one month intervals in that
period would be quite helpful in narrowing down the source.
Thanks,
Robert N M Watson
Computer Laboratory
University of Cambridge
TCP_RR
Trans.
Rate
per sec
6-stable-x86 9801.58
7-stable-x64 137.61
7-stable-x64 89.35
7-stable-x64 102.29
TCP_CRR
Trans.
Rate
per sec
6-stable-x86 4520.98
7-stable-x64 7.00
7-stable-x64 8.10
7-stable-x64 18.49
UDP_RR
Trans.
Rate
per sec
6-stable-x86 9473.20
7-stable-x64 9.60
7-stable-x64 0.90
7-stable-x64 0.10
I can send you complete results if wanted.
Other possible cause of issue could be link speed/duplex mismatch
or excessive MAC control frames(e.g. pause frames). Does nfe(4)
agree on resolved speed/duplex with link partner?
yes (1000baseTX <full-duplex>)
If they all agree on resolved speed/duplex, would you check number
of pause frames sent/received from link partner? Even though MCP65
supports hardware MAC statistics for pause frames nfe(4) has no
support code yet so you may have to resort to managed switch that
can show Tx/Rx statistics of each port.
aargh; I do have a Netgear GS724TS around where I can connect it to.
This thing should be manageable, but give me some time to
find out how ....
Thanx, Arno
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