From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-ve0-x230.google.com ([2607:f8b0:400c:c01::230]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WkThf-0004nR-J4 for ath10k@lists.infradead.org; Wed, 14 May 2014 07:34:16 +0000 Received: by mail-ve0-f176.google.com with SMTP id jz11so1873687veb.21 for ; Wed, 14 May 2014 00:33:52 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <1399942355-19993-1-git-send-email-apenwarr@gmail.com> <1400015472-4647-1-git-send-email-apenwarr@gmail.com> Date: Wed, 14 May 2014 15:33:52 +0800 Message-ID: Subject: Re: [PATCH v3] ath10k: support get/set antenna configurations. From: Yeoh Chun-Yeow List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Avery Pennarun Cc: Vu Hai NGUYEN , Patrick CARNEIRO RODRIGUEZ , Ben Greear , "ath10k@lists.infradead.org" I also try to confirm using debug_mask in ath10k and it seems also 3 spatial streams: [ 3826.320000] ath10k: rx skb 86533480 len 1534 vht80 rate_idx 7 vht_nss 3 freq 5180 band 1 flag 0x40600000 fcs-err 0mic-err 0 ----- Chun-Yeow On Wed, May 14, 2014 at 3:22 PM, Yeoh Chun-Yeow wrote: > Here is the screenshot of my wireshark capture. I am seeing 3 spatial > streams instead of 1 after setting the antennas. > > --- > Chun-Yeow > > On Wed, May 14, 2014 at 3:18 PM, Avery Pennarun wrote: >> On Wed, May 14, 2014 at 2:25 AM, Yeoh Chun-Yeow wrote: >>> Here is from the fw_stats: >>> >>> ath10k PEER stats (1) >>> ================= >>> >>> Peer MAC address 04:f0:21:0c:a5:1c >>> Peer RSSI 43 >>> Peer TX rate 877500 >>> Peer RX rate 877500 >>> >>> TCP throughput is roughly around 151Mbps. >> >> In my tests it's easy to achieve >151 Mbps with a 40 MHz channel and >> 2x2. So if you're using an 80 MHz channel (twice the speed) and only >> one antenna (half the speed) you could still get 151 Mbps pretty >> easily. >> >> I wouldn't be surprised if your speed is being limited by something >> else, maybe the host CPU or a slow interconnect on the station or AP >> (USB perhaps?), so it doesn't look "worse" with only one antenna >> because it should be at least twice as good when operating normally. >> >> If you use wireshark or tcpdump you should be able to check the MCS >> level of the packets and see that it's lower with fewer antennas. >> >> Have fun, >> >> Avery _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k