On 20.08.19 09:12, Christoph Hellwig wrote:
On Tue, Aug 20, 2019 at 02:58:33PM +0800, Hillf Danton wrote:
On Tue, 20 Aug 2019 05:05:14 +0200 Christoph Hellwig wrote:
Tobias, plase try this patch:
New version below:
---
From b8a805e93be5a5662323b8ac61fe686df839c4ac Mon Sep 17 00:00:00
Wen Gong writes:
> Tx complete message from firmware cost bus bandwidth of sdio, and bus
> bandwidth is the bollteneck of throughput, it will effect the bandwidth
> occupancy of data packet of TX and RX.
>
> This patch disable TX complete indication from firmware for htt data
> packet, it
Wen Gong writes:
> The max bundle size support by firmware is 32, change it from 8 to 32
> will help performance. This results in significant performance
> improvement on RX path.
What happens when the hardware doesn't have enough data to fill a
bundle? Does it send a smaller one, or does it
The transmission utilization ratio for sdio bus for small packet is
slow, because the space and time cost for sdio bus is same for large
length packet and small length packet. So the speed of data for large
length packet is higher than small length.
Test result of different length of data:
data
For tcp RX, the quantity of tcp acks to remote is 1/2 of the quantity
of tcp data from remote, then it will have many small length packets
on TX path of sdio bus, then it reduce the RX packets's bandwidth of
tcp.
This patch enable napi on RX path, then the RX packet of tcp will not
feed to tcp
The default credit size is 1792 bytes, but the IP mtu is 1500 bytes,
then it has about 290 bytes's waste for each data packet on sdio
transfer path for TX bundle, it will reduce the transmission utilization
ratio for data packet.
This patch enable the small credit size in firmware, firmware will
From: Alagu Sankar
The existing implementation of initiating multiple sdio transfers for
receive bundling is slowing down the receive speed. Combining the
transfers using a bundle method would be ideal.
The transmission utilization ratio for sdio bus for small packet is
slow, because the space
Tx complete message from firmware cost bus bandwidth of sdio, and bus
bandwidth is the bollteneck of throughput, it will effect the bandwidth
occupancy of data packet of TX and RX.
This patch disable TX complete indication from firmware for htt data
packet, it results in significant performance
The max bundle size support by firmware is 32, change it from 8 to 32
will help performance. This results in significant performance
improvement on RX path.
Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-7-QCARMSWP-1.
Signed-off-by: Wen Gong
---
drivers/net/wireless/ath/ath10k/htc.h
The bottleneck of throughout on sdio chip is the bus bandwidth, to the
patches are all to increase the use ratio of sdio bus.
udp-rxudp-txtcp-rxtcp-tx
without patches(Mbps) 320180 170 151
with patches(Mbps) 450410 400
The thread of read rx message by sdio bus from firmware is
synchronous, it will cost much time for process the left part
of rx message which includes indicate the rx packet to uppper
net stack. It will reduce the time of read from sdio.
This patch move the indication to a workqueue, it results in
On Tue, Aug 20, 2019 at 02:58:33PM +0800, Hillf Danton wrote:
>
> On Tue, 20 Aug 2019 05:05:14 +0200 Christoph Hellwig wrote:
> >
> > Tobias, plase try this patch:
> >
New version below:
---
>From b8a805e93be5a5662323b8ac61fe686df839c4ac Mon Sep 17 00:00:00 2001
From: Christoph Hellwig
Date:
On Tue, 20 Aug 2019 05:05:14 +0200 Christoph Hellwig wrote:
>
> Tobias, plase try this patch:
>
A minute!
> --
> >From 88c590a2ecafc8279388f25bfbe1ead8ea3507a6 Mon Sep 17 00:00:00 2001
> From: Christoph Hellwig
> Date: Tue, 20 Aug 2019 11:45:49 +0900
> Subject: dma-direct: fix zone selection
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