Return-path: Received: from ug-out-1314.google.com ([66.249.92.172]:14939 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751095AbZAUTdE convert rfc822-to-8bit (ORCPT ); Wed, 21 Jan 2009 14:33:04 -0500 Received: by ug-out-1314.google.com with SMTP id 39so400663ugf.37 for ; Wed, 21 Jan 2009 11:33:01 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20090121191141.GA14710@tuxdriver.com> References: <200901140003.31693.gbburkhardt@verizon.net> <200901151734.46144.gbburkhardt@verizon.net> <200901202238.08756.gbburkhardt@verizon.net> <20090121151435.GB3643@tuxdriver.com> <69e28c910901211022j7f9c67dfv6392ce043dcff522@mail.gmail.com> <20090121191141.GA14710@tuxdriver.com> Date: Wed, 21 Jan 2009 20:33:01 +0100 Message-ID: <69e28c910901211133n25c1a151nc9ca7172a9de7d3a@mail.gmail.com> (sfid-20090121_203307_644492_54D42799) Subject: Re: poor performance with ath5k; reverting to ath_pci From: =?ISO-8859-1?Q?Stefanik_G=E1bor?= To: "John W. Linville" Cc: Glenn Burkhardt , Bob Copeland , Nick Kossifidis , linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Wed, Jan 21, 2009 at 8:11 PM, John W. Linville wrote: > On Wed, Jan 21, 2009 at 07:22:14PM +0100, Stefanik G=E1bor wrote: >> On Wed, Jan 21, 2009 at 4:14 PM, John W. Linville >> 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 >> >> > >> >> > wrote: >> >> > > ath5k_pci 0000:00:07.0: PCI INT A -> GSI 18 (level, low) -> I= RQ 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 cou= ld 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 con= trol 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 EMBED= DED? > > 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. G=E1bor --=20 Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireles= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html