From: Wen Gong <wgong@qti.qualcomm.com>
To: Dave Taht <dave@taht.net>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: RE: [PATCH 2/7] ath10k: change max RX bundle size from 8 to 32 for sdio
Date: Wed, 4 Sep 2019 04:43:21 +0000 [thread overview]
Message-ID: <259d8d7f8c2a4c428ae14ff211c83c1a@aptaiexm02f.ap.qualcomm.com> (raw)
In-Reply-To: <87k1apnyyo.fsf@taht.net>
> -----Original Message-----
> From: Dave Taht <dave@taht.net>
> Sent: Wednesday, September 4, 2019 12:10 AM
> To: Wen Gong <wgong@qti.qualcomm.com>; ath10k@lists.infradead.org;
> linux-wireless@vger.kernel.org
> Subject: [EXT] Re: [PATCH 2/7] ath10k: change max RX bundle size from 8 to
> 32 for sdio
>
>
> In terms of deeply grokking what increasing buffering to achieve high
> bandwidth on a testbench, vs what it can do to clobber latency in the
> real world at low bandwidths, I tend to point folk at:
>
> https://www.youtube.com/watch?v=Rb-UnHDw02o&t=25m40s
>
> where I got a whole bunch of hackers to stand up and act like packets
> in an aggregating FIFO wifi queue.
>
> This key section is only 8 minutes long, and I promise, y'all laugh
> at least 3 times at the demonstration.
>
> At the time, also, the ath10k was so overbuffered that on one test
> I could try to start 100 flows, and only get five.
>
> https://lwn.net/Articles/705884/
>
> and on my slides:
>
> https://blog.linuxplumbersconf.org/2016/ocw//system/presentations/3963/
> original/linuxplumbers_wifi_latency-3Nov.pdf
>
Hi Dave,
So your mean is change 8 to 32 will impact latency? It will increase latency of rx?
>
> 0xFFFEFFFF
next prev parent reply other threads:[~2019-09-04 4:43 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 11:55 [PATCH 0/7] ath10k: improve throughout of tcp/udp TX/RX of sdio Wen Gong
2019-08-20 11:55 ` [PATCH 1/7] ath10k: enable RX bundle receive for sdio Wen Gong
2019-08-27 7:40 ` Nicolas Boichat
2019-08-27 8:02 ` Wen Gong
2019-08-27 8:08 ` Nicolas Boichat
2019-08-28 4:25 ` Wen Gong
2019-08-20 11:55 ` [PATCH 2/7] ath10k: change max RX bundle size from 8 to 32 " Wen Gong
2019-08-20 12:23 ` Toke Høiland-Jørgensen
2019-08-21 6:01 ` Wen Gong
2019-08-21 10:02 ` Toke Høiland-Jørgensen
2019-08-27 7:42 ` Nicolas Boichat
2019-08-28 2:31 ` Wen Gong
2019-09-03 16:09 ` Dave Taht
2019-09-04 4:43 ` Wen Gong [this message]
2019-09-04 13:34 ` Dave Taht
2019-09-05 10:12 ` Wen Gong
2019-08-20 11:55 ` [PATCH 3/7] ath10k: add workqueue for RX path of sdio Wen Gong
2019-09-04 2:31 ` Wen Gong
2019-08-20 11:55 ` [PATCH 4/7] ath10k: disable TX complete indication of htt for sdio Wen Gong
2019-08-20 12:23 ` Toke Høiland-Jørgensen
2019-08-21 6:20 ` Wen Gong
2019-08-21 10:10 ` Toke Høiland-Jørgensen
2019-08-21 10:20 ` Wen Gong
2019-08-22 12:12 ` Toke Høiland-Jørgensen
2019-08-23 2:46 ` Wen Gong
2019-08-23 8:39 ` Toke Høiland-Jørgensen
2019-08-27 7:56 ` Nicolas Boichat
2019-08-28 4:24 ` Wen Gong
2019-09-04 2:33 ` Wen Gong
2019-08-20 11:55 ` [PATCH 5/7] ath10k: add htt TX bundle " Wen Gong
2019-09-04 2:34 ` Wen Gong
2019-08-20 11:55 ` [PATCH 6/7] ath10k: enable alt data of TX path " Wen Gong
2019-09-04 2:36 ` Wen Gong
2019-08-20 11:55 ` [PATCH 7/7] ath10k: enable napi on RX " Wen Gong
2019-09-04 2:37 ` Wen Gong
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