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Re: ath(4) HAL in -current vs 5.0
On Mon, 23 Mar 2009, David Brownlee wrote:
On Mon, 23 Mar 2009, Stephen Borrill wrote:
I've been running NetBSD 5.0 with Jared's ath patch on an EeePC 900A. Today
I tried using wi-fi in anger and saw I was getting average ping times of
1600ms (stddev 1416) and 3% packet loss (some ping times over 12000ms!). I
then tried -current (the open-source HAL) which was much better. So I
backported the current HAL to 5.0 and tried again. This gave a fantastic
performance improvement (1.2ms with 1.6ms stddev and 0% packet). I tried
the test a few times to check it was consistent.
I understand the reasons for not pulling this up to netbsd-5 especially
that we are at RC3 (I think: lack of testing on all platforms and problems
with TKIP), but hopefully this will be a useful datapoint.
How much pain would it be to include it in 5.0 as a compiletime
option? It would require people to compile a custom kernel, but
it at least opens that option
Switching between HALs is/was pretty painful. I did this for 4.0 with the
old HAL and ending up duplicating most things and renaming ath to atheee.
However the structure is much cleaner with the new layout, so it might be
much easier now. However, you'll probably still end up battling paths in
conf/files and such like.
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