From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 21C333B2A4 for ; Thu, 1 Mar 2018 20:10:05 -0500 (EST) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4CFA16076C; Fri, 2 Mar 2018 01:10:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1519953004; bh=Ot0lKnnH2KRa55sKDHIC9n6n/PNRui+BsaZS5pf/pxs=; h=Subject:To:References:Cc:From:Date:In-Reply-To:From; b=YIhp1wTgDG3cdl1ZP8QZDtQA9qA9eDCIFNqyYYe7qYqnblISlt2KuFKTdAWc71jYu 2fKmmssD1rflcxX+6PL7wu30Fouk6X6pIchFplqkr2/vPkdW1cyXcbfJ0I0sXxejW6 qUe/FZDwwrSmGJ6YLr7X1XIjUyQvPWOAZmYbXJT4= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED,T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from [10.62.84.94] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: ryanhsu@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4C93360251; Fri, 2 Mar 2018 01:10:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1519953003; bh=Ot0lKnnH2KRa55sKDHIC9n6n/PNRui+BsaZS5pf/pxs=; h=Subject:To:References:Cc:From:Date:In-Reply-To:From; b=WS4nxjbaMDdj7uOmYnNSAgAwYJegIlF9Tiqv8hNrdyxn1ql95q1V+MdRmY3oReipo SvmSUAJojbx/nwy3jtkoUO2YoVgfAb9eriSY4UMf6tIJn+cqcq0T3ca+Wu1rohe9js mPkrRTlQlM4yNA9v3IacUJLV5vcElG/LmIAQq4/o= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4C93360251 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=ryanhsu@codeaurora.org To: Jonathan Morton , =?UTF-8?Q?Toke_H=c3=b8iland-J=c3=b8rgensen?= References: <20180202151105.30043-1-toke@toke.dk> <40f644f6-ecfa-c31b-ce98-3491c954d6b1@qti.qualcomm.com> <41B51538-B1F5-4611-AAB4-923C585FF3DA@toke.dk> Cc: "make-wifi-fast@lists.bufferbloat.net" , "linux-wireless@vger.kernel.org" From: Ryan Hsu Message-ID: Date: Thu, 1 Mar 2018 17:09:47 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Fri, 02 Mar 2018 05:16:25 -0500 Subject: Re: [Make-wifi-fast] [PATCH] mac80211: Adjust TSQ pacing shift X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Mar 2018 01:10:05 -0000 On 02/14/2018 12:23 AM, Jonathan Morton wrote: >> On 14 Feb, 2018, at 10:18 am, Toke Høiland-Jørgensen wrote: >> >> Why does the CPU usage go up >7? > Just as a guess, it's generating extra packets which are then laboriously discarded and retransmitted. > > - Jonathan Morton I think for 11n, like ath9k, it might be good enough for 8, but for 11ac could aggregate a little more. Yes, and CPU usage goes up after 6 or 7, might due to it generates extra packets but the physical bus is capping the throughput, so that we can't see much throughput difference after (or maybe my setup is not optimal, assumed we should be seeing around 550-600Mbps for TCP in 11ac), but only the CPU usage increased. -- Ryan Hsu