Re: New BETA of Broadcom 440x chipset driver

On Mon, 2003-08-25 at 16:56, Duncan Barclay wrote:
> Hi
> 
> I think I have fixed the RX packet loss and memory corruption problems with
> the previous version of the driver. Please try the code at
> 
> http://people.freebsd.org/~dmlb/bcm-0308252140.tar.gz
> 
> I have manged to get full link speed ftping large files in both direction.
> Also, I have successfully populated an empty /usr/src tree with cvsup whilst
> up and downloading 50MB files.

This is _much_ nicer so far.  My interactive sessions (i.e. SSH,
checking mail, logging into AIM, etc.) are all much quicker and much
more reliable.

> 
> Would people please try this and feed back good and bad experiences. I would
> be interested if people could run their favorite net bench marks with the
> hw.bcm_rx_quick sysctl set to 1 (default) and 0. Setting to zero forces the
> driver to copy data from the NIC, one causes the driver to do a small 44
> byte memory shuffle. Whilst wire speed should not differ, time spent in the
> interrupt routine should be less with the sysctl set to 1.

I'll try with 0 later, but 1 seems pretty good.  I haven't done a big
transfer yet, though.

> 
> Please do not use on a "valuable" system. The problem that this release
> tries to fix sometimes resulted in kernel memory corruption.

:-) Too late.  My laptop is pretty important, but it's the only machine
I have that can use this driver.

Joe

> 
> All the best
> 
> Duncan
> 
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