From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail2.candelatech.com ([208.74.158.173]) by merlin.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bmKpo-00056e-U1 for ath10k@lists.infradead.org; Tue, 20 Sep 2016 13:11:44 +0000 Message-ID: <57E13407.9040705@candelatech.com> Date: Tue, 20 Sep 2016 06:05:11 -0700 From: Ben Greear MIME-Version: 1.0 Subject: Re: Issue with ATH10K driver with 802.11 a/g mode datarates References: <20160919041857.M30046@universe.cdotb.ernet.in> <57E01220.3060302@candelatech.com> <20160920033049.M23541@cdot.in> <57E0BBFF.4070206@candelatech.com> <20160920070228.M20774@cdot.in> In-Reply-To: <20160920070228.M20774@cdot.in> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Sridhar Konabathini , Adrian Chadd Cc: Michal Kazior , Horse , "ath10k@lists.infradead.org" , Raj Joshi You normally need to add 30-60 db of attenuation to get best throughput when directly cabling with SMA cables. Please try adding more attenuation. What firmware are you using on the T1024RDB? Maybe also try using a different firmware version to see if that helps. Thanks, Ben On 09/20/2016 01:04 AM, Sridhar Konabathini wrote: > Hi, > Yes, we are doing the testing in an isolation chamber (no attenuators used), antennas > are connected to RF card via SMA cable. Tx power is 5dBm. we are not suspecting Lanforge > as it gives required throughput in different WiFi setup. > here Device Under test is T2014 based card. > > Regards, > Sridhar > > On Mon, 19 Sep 2016 21:33:03 -0700, Ben Greear wrote >> LANforge is going to be running a modified driver and firmware, though likely >> it is no worse at performance in this case than stock code. >> >> What is the device under test? >> >> And, are you in an isolation chamber, using SMA cables, attenuation, etc? >> >> There are lots of things that can impact wifi throughput so you have to provide >> lots more details in order for anyone to understand why the throughput might be >> less than expected. >> >> And if it is specific to LANforge, please send email to support@candelatech.com >> >> Thanks, >> Ben >> >> On 09/19/2016 08:46 PM, Sridhar Konabathini wrote: >>> Hi, >>> I didnt try with ath9k drivers on the same setup. >>> >>> we are using WiFi capacity test tool on Lanforge to test the performance, this > will >>> generate the traffic. we are selecting the UDP protocol (packet - 1472 Bytes). >>> >>> As per TEC spec. required data rates are given below. >>> >>> Mode Asso. rate Throughput >>> >>> 802.11a 54 Mbps 28 Mbps >>> >>> 802.11g 54 Mbps 28 Mbps >>> >>> But we are getting only 26-27Mbps, how to improve this throughput ? >>> >>> [TEC(Telecommunication Engineering Centre, Govt. India) is a technical body, >>> prepares specification of common Telecom standards.] >>> >>> Regards, >>> Sridhar >>> >>> >>> On Mon, 19 Sep 2016 10:22:26 -0700, Adrian Chadd wrote >>>> .... and what's "TEC specification" ? >>>> >>>> - >>>> a >>>> >>>> On 19 September 2016 at 09:28, Ben Greear wrote: >>>>> Out of curiosity, does ath9k perform at the required rates in a similar >>>>> setup? >>>>> >>>>> Sending tcp, udp, or some other protocol? How are you generating the >>>>> traffic? >>>>> >>>>> Thanks, >>>>> Ben >>>>> >>>>> >>>>> On 09/18/2016 09:26 PM, Sridhar Kondabathini wrote: >>>>>> >>>>>> Hi, >>>>>> >>>>>> When we are testing 802.11 a/g mode throughput measurements on >>>>>> T1024RDB ( we used >>>>>> kernel-3.12; ath10k drivers backported from 4.4;hostapd 2.5 for 11AC >>>>>> support), then we >>>>>> are getting 26-27 Mbps , which is not meeting the required TEC >>>>>> specification (which is >>>>>> ~28 Mbps). How can we increase the throughput in these modes. >>>>>> >>>>>> Can you please help on this. >>>>>> >>>>>> >>>>>> >>>>>> Regards, >>>>>> >>>>>> Sridhar Kondabathini, >>>>>> Research engineer, >>>>>> PSG lab, >>>>>> Center for Development Of Telematics >>>>>> 9480484821. >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Disclaimer: >>>>>> ---------- >>>>>> This email and any files transmitted with it are confidential and intended >>>>>> solely >>>>>> for >>>>>> the use of the individual or entity to whom they are addressed. If you >>>>>> are not the >>>>>> intended recipient you are notified that disclosing, copying, distributing >>>>>> or taking >>>>>> any >>>>>> action in reliance on the contents of this information is strictly >>>>>> prohibited. The >>>>>> sender does not a >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> ath10k mailing list >>>>>> ath10k@lists.infradead.org >>>>>> http://lists.infradead.org/mailman/listinfo/ath10k >>>>>> >>>>> >>>>> >>>>> -- >>>>> Ben Greear >>>>> Candela Technologies Inc http://www.candelatech.com >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> ath10k mailing list >>>>> ath10k@lists.infradead.org >>>>> http://lists.infradead.org/mailman/listinfo/ath10k >>>> >>>> _______________________________________________ >>>> ath10k mailing list >>>> ath10k@lists.infradead.org >>>> http://lists.infradead.org/mailman/listinfo/ath10k >>> >>> >>> Regards, >>> >>> Sridhar Kondabathini, >>> Research engineer, >>> PSG lab, >>> Center for Development Of Telematics >>> 9480484821. >>> >>> >>> >>> >>> Disclaimer: >>> ---------- >>> This email and any files transmitted with it are confidential and intended solely >>> for >>> the use of the individual or entity to whom they are addressed. If you are not the >>> intended recipient you are notified that disclosing, copying, distributing or taking >>> any >>> action in reliance on the contents of this information is strictly prohibited. The >>> sender does not a >>> >> >> -- >> Ben Greear >> Candela Technologies Inc http://www.candelatech.com >> >> _______________________________________________ >> ath10k mailing list >> ath10k@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/ath10k > > > Regards, > > Sridhar Kondabathini, > Research engineer, > PSG lab, > Center for Development Of Telematics > 9480484821. > > > > > Disclaimer: > ---------- > This email and any files transmitted with it are confidential and intended solely > for > the use of the individual or entity to whom they are addressed. If you are not the > intended recipient you are notified that disclosing, copying, distributing or taking > any > action in reliance on the contents of this information is strictly prohibited. The > sender does not a > -- Ben Greear Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k