On 2009-12-15 2:18 PM, Ayee Goundan wrote: > I apologize for the delay. Please use Sasi Subramaniam as your first > point of contact for OpenWRT related questions, while cc'ing Senthil > Balasubramanian. Sasi will coordinate appropriate help within the > organization to provide as quick a response as possible.
Hi Sasi, I've quoted my initial problem description below. Please let me know if you have any questions about my details of my test setup. Thanks, - Felix >> I'm running OpenWrt with our Linux 2.6.30 based kernel and ath9k from >> compat-wireless on two identical devices based on AR7240 and AR9283 >> (Python+Merlin). The devices are 'Rocket M5' by Ubiquiti Networks. >> One of them is configured to run as an AP, the other one is >> connected to >> it as STA. >> >> The main problem that I have been unable to track down so far is that >> whenever I run traffic through those two devices, I get very bad >> throughput (max. 60 mbit/s, mostly only 50 mbit/s). >> Rate control stats show that the rate in use is mostly 216 >> MBit/s, with >> a low packet error rate (fluctuating between 0 and 7%). >> Packet captures >> from an external device confirm this. Aggregation is >> definitely working >> properly, and the CPU load on both devices usually stays well >> below 50%. >> >> I also ran similar tests with ath9k on completely different hardware, >> with exactly the same issues. The other hardware combinations that I >> tested were Intel IXP4xx based boards with AR5416, AR9160 and AR9220 >> based cards. The kernel that I used on those boards was 2.6.28. >> >> I can rule out issues with the Kernel or the Ethernet driver, since a >> modified version of the Carrier LSDK driver is performing well in the >> same setup (I included the carrier driver in the same firmware build >> that I tested ath9k with). >> >> The weird part to this is that whenever I run the same set of >> tests with >> an older MacBook as STA against one of the ath9k devices as AP, I get >> more than 95 MBit/s in both directions (limited by the Ethernet >> connection speed). I also ran the same tests with a Ralink >> RT2870 device >> instead of the MacBook card, with equally good results. >> >> I've spent a considerable amount of time trying to track this >> issue down >> (including comparing register traces against a working >> driver), with no >> promising lead so far, so I'd appreciate any help from your side. _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
