On Wed, Jan 21, 2009 at 08:33:01PM +0100, Stefanik Gábor wrote: > On Wed, Jan 21, 2009 at 8:11 PM, John W. Linville > <linville@xxxxxxxxxxxxx> wrote: > > On Wed, Jan 21, 2009 at 07:22:14PM +0100, Stefanik Gábor wrote: > >> On Wed, Jan 21, 2009 at 4:14 PM, John W. Linville > >> <linville@xxxxxxxxxxxxx> wrote: > >> > On Tue, Jan 20, 2009 at 10:38:08PM -0500, Glenn Burkhardt wrote: > >> >> On Friday 16 January 2009 10:33:13 Bob Copeland wrote: > >> >> > On Thu, Jan 15, 2009 at 5:34 PM, Glenn Burkhardt > >> >> > > >> >> > <gbburkhardt@xxxxxxxxxxx> wrote: > >> >> > > ath5k_pci 0000:00:07.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 > >> >> > > ath5k_pci 0000:00:07.0: registered as 'phy0' > >> >> > > phy0: Selected rate control algorithm 'pid' > >> >> > > >> >> > Can you change the rate control algorithm to minstrel and retry? > >> >> > >> >> I built a 2.6.28.1-9 kernel to get the minstrel code for ath5k. The > >> >> kernel for Suse 11.1 is 2.6.27.7-9. But that means that more could have > >> >> changed besides the rate control code. > >> >> > >> >> It looks like minstrel and pid give about the same result, a bit worse that > >> >> the ath_pci driver right now. Performance seems to vary from day to day. > >> >> I'll experiment some more, and switch transmission channels. I'm not getting > >> >> the really poor performance with ath5k right now. > >> >> > >> >> I haven't looked yet - is there a way to switch to 'pid' rate control without > >> >> rebuilding the kernel? > >> > > >> > If you configure your kernel to include multiple rate control > >> > algorithms then you can use the 'ieee80211_default_rc_algo' module > >> > option for mac80211. Of course, changing that only works if you > >> > rmmod/insmod mac80211. > >> > > >> > John > >> > >> Judging from this, is it really a good idea to hide pid behind EMBEDDED? > > > > I've been wondering about that myself. I'm inclined to think no. > > > > John > > I think EMBEDDED is for options that replace full-featured Linux > components with dumbed-down, "low-profile" equivalents (like SLOB) - > PID vs. minstrel is more like SLAB vs. SLUB. Patches welcome. Bonus points if you find a way to switch algorithms without module unloading and/or to pick different algorithms for different interfaces. John -- John W. Linville Someday the world will need a hero, and you linville@xxxxxxxxxxxxx might be all we have. Be ready. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
