Samsung SC1200-TX problem.

jferg jferg@2boot.com
Sun May 2 12:34:40 1999


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Heling Yi wrote:

> Hi folks,
>
> I have a samsung SC1200-TX rev-1a(with genuine DEC Tulip 21140 on
> board)  ethernet card in a dual celeron computer. My net is 10BaseT.
> The problem is that Samsung ethernet card transmits packets very
> slowly, i.e. 90Kbyte-100Kbyte/sec under Linux(RH 5.2. I tried Kernel
> 2.2.5, 2.2.3, 2.2.2, all have the same problem), but receiving packets
> seems okay(between 700kbyte-1Mbyte/sec). I tried the lastest tulip
> driver(0.91), it doesn't help either. However, the ethernet card works
> flawlessly under windoze( both upload and download at
> 800kbyte-1Mbyte/sec).
>
> diagnostics result is attached.
>
> Any idea? Thank in advance!
>
> Heling

I suspect you are connected via a switch.  Chack the half/full duplex
status of the switch,  Likely ACKs are getting lost and there are lots of
timeouts and retransmits.

->>snip<--


--
Joe Ferguson, ApeX Systems Integration Corp.
Voice:  919.468.8150
FAX:    919.468.5288
email:  jferg@2boot.com



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Heling Yi wrote:
Hi folks,

I have a samsung SC1200-TX rev-1a(with genuine DEC Tulip 21140 on
board)  ethernet card in a dual celeron computer. My net is 10BaseT.
The problem is that Samsung ethernet card transmits packets very
slowly, i.e. 90Kbyte-100Kbyte/sec under Linux(RH 5.2. I tried Kernel
2.2.5, 2.2.3, 2.2.2, all have the same problem), but receiving packets
seems okay(between 700kbyte-1Mbyte/sec). I tried the lastest tulip
driver(0.91), it doesn't help either. However, the ethernet card works
flawlessly under windoze( both upload and download at
800kbyte-1Mbyte/sec).

diagnostics result is attached.

Any idea? Thank in advance!

Heling


I suspect you are connected via a switch.  Chack the half/full duplex status of the switch,  Likely ACKs are getting lost and there are lots of timeouts and retransmits.

->>snip<--
 

-- 
Joe Ferguson, ApeX Systems Integration Corp.
Voice:  919.468.8150
FAX:    919.468.5288
email:  jferg@2boot.com
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