[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [linux-tr] Slow Turbo Adapters
On Wed, 14 Apr 1999 07:50:48 -0500, Michael R. Eckhoff wrote:
>I've been hearing a lot about slow performance of the token ring driver (around
>3K or so - you could almost do better with a cheap modem :/) lately.
>Every time I hear this, it is the Turbo adapter. Was there a firmware/chip
>change to this adapter that is making it really start running like crap in Auto
>emulation mode? I remember using Turbo's when they first came out in Auto mode
>and saw GREAT performance.
I've got several Turbo adapters in auto 16/4-mode which are all working
nicely. you have to make sure the shared ram (/ramsize) in lanaidc is
set to > 16K)
Setting the ramsize bigger (32, 64) will increase the incoming speed
greatly. Outgoing speed seems to be less affected, and is over
The maximum speed I can get between two Turbo's in Auto mode (both
Linux) is 1200K/sec (2.2.5-ac6 kernel with tr224.tgz tr-code) ideal
conditions and with tcpspray).
I've also been testing IP masquerading through a PII 350 with two Turbo
16/4's (32K shared ram) and got speeds over 1000K/s going through the
You can download "lanaidc.exe" from www.networking.ibm.com (folow
"support" -link) ( TRI164T1.EXE ?)
PS: be carefull with lainaidc, just last week I have broken a Turbo
16/4 whilst playing with it.. it doesn't get recognised anymore, not
even with lanaidc.
Erik De Cock.