Ok I thought I got something wrong when I reviewed the thread I was reading, this hole thread was in my trash folder (who would figure) Will post results Rogerio 2010/11/1 Larry Finger <Larry.Finger@xxxxxxxxxxxx>: > On 10/31/2010 11:39 PM, Herton Ronaldo Krzesinski wrote: >> I have seen the throughput issue, but on my tests it wasn't so bad. >> Usually max I got on testing was 24M while close to the AP, and it goes >> into lower speeds when going more far away, but takes a good number of >> meters to go down to 1M. >> >> Anyway of course something isn't right. I started reviewing realtek GPL >> code (their ieee80211 drivers) and code in rtl8187 in the kernel, doing >> many tests and verifying things, trying to understand and check some >> register writes etc. (hard with missing doc or other info). >> >> I did some cleanups, and discovered two bad things in the code. After >> the fixes, I can get normal rates (up to 54M close to the AP) without >> issue. I'll soon post the patch series to be included in >> wireless-testing, for now just for test I attach them to be easier (hope >> it isn't stripped by ML, and yes they start on 0003 through 0011 :P), >> check if with it you get better results. >> >> The patches that matter (shown by my tests) are: >> 0010-rtl8187-remove-uneeded-setting-of-anaparam-write.patch >> 0011-rtl8187-restore-anaparam-registers-after-reset-with-.patch >> >> but they depend on some previous patches in the series (better apply >> all), and I diffed on a tree with Thadeu's patch applied already. There >> is more cleanups and checking to do, but I probably will submit this >> initial series and later come with more ones, as with this initial >> series the throughput issue should be solved. > > Good work. As you noted, patches 3 - 9 did not make any difference in the > transmit throughput. From a distance of 2 m from the AP, my 8187B yielded up to > 11.4 Mb/s and an indicated rate of 24 M. Applying patch 10 raised those numbers > to 17.5 Mb/s and 48 M. Adding patch 11 raised them again to 26.9 Mb/s and 54 M, > thus getting full throughput for the 8187B and a transmit rate increase of 2.4X. > > As expected, these changes had no affect on the RTL8187L. Note: The 8187L gets > values of 23.0 Mb/s and 54M - there may be a little performance gain to be > obtained from the driver. > > You should submit these patches now, and feel free to add my "Acked-by:" to them. > > Larry > -- > 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 > -- 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
