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DragonFly kernel List (threaded) for 2005-10
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Re: request to nuke gx(4)


From: Mike Porter <mupi@xxxxxxxxx>
Date: Sun, 02 Oct 2005 11:39:32 -0600

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Jeroen Ruigrok/asmodai wrote:
> -On [20051001 14:36], Toma? Bor?tnar (tomaz.borstnar@xxxxxxxx) wrote:
> 
>>can you please also update em driver? Intel has 3.2.15 version of FreeBSD 
>>driver for download which is same as in FreeBSD 5.4. There are some new 
>>GigE cards out there that DFLy does not support them while FreeBSD 4.11 and 
>>FreeBSD 5.4 do.
> 
> 
> Yes please.
> 
> Someone is testing the bandwidths and currently has:
> 
> 300MHz, 288MB RAM with intel pro gigabit NIC:
> Debian Sarge 2.4: 355Mb/s with 200KB window size.
> FreeBSD 6.0-BETA5: 150Mb/s with 200KB window size. 250Mb/s with polling
> enabled.
> FreeBSD 4.11: 300Mb/s with default window size. 323Mb/s with 200KB window
> size.
> DragonFlyBSD snapshot: didnt support NIC.
> OpenBSD 3.7: 128Mb/s with default. 135Mb/s with a 200KB window size
> 2003 server: 405Mb/s with 200KB Window size. 188Mb/s with default settings.
> 2003 server w/SP1:
> 
> *notes:
> FreeBSD 6.0-BETA5 was compiled without debugging enabled.
> Debian 2.4 and 2.6 results were fairly similar 
> 
> Pay attention how 6 is HALF of 4.11's throughput without using polling.  And
> 4.11 as far as I can see in its LINT has no polling support.
> 

I can't speak specifically for 4.11, but earlier versions of the 4.x
family had polling support, I can't imagine they would have removed it.
(At least, there was polling support for certain devices, I used polling
mode on my cheap-o DEC-based card, which tells me that the
polling-support infrastructure was there; whether specific devices used
it or not, I also can't speak to.)

mike
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