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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/12/29 14:07:11 UTC
[GitHub] [incubator-nuttx] a-lunev opened a new pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
a-lunev opened a new pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112
## Summary
Supported ARM CR4 core in bcm43xxx driver and bcm43455 chip in particular.
## Impact
bcm43xxx driver
## Testing
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1003250220
Thanks @a-lunev we are trying your new config:).
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[GitHub] [incubator-nuttx] xiaoxiang781216 merged pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 merged pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002695292
BTW, how much frequency do your host MCU run on?
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[GitHub] [incubator-nuttx] a-lunev commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
a-lunev commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1003244976
> One more question:), @a-lunev how much throughput you can achieve at 120MHz?
I prepared configuration file (#5130) for Photon board (120 MHz host MCU, BCM43362 Wi-Fi chip) to measure wlan performance.
Based on the current state of the master branch:
- the peak TCP payload throughput (unbuffered mode) is about 13 Mbit/s
- the peak UDP payload throughput (unbuffered mode, CRC enabled) is about 17 Mbit/s
- the peak UDP payload throughput (unbuffered mode, CRC disabled) is about 20 Mbit/s
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[GitHub] [incubator-nuttx] a-lunev commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
a-lunev commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002717244
> BTW, how much frequency do your host MCU run on?
I tested at 120 MHz, 200 MHz and 400 MHz (ARM CM3/CM7). The higher host MCU frequency, the higher the driver performance. I suppose it may be even better at frequencies higher than 400 MHz.
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[GitHub] [incubator-nuttx] a-lunev edited a comment on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
a-lunev edited a comment on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1003244976
> One more question:), @a-lunev how much throughput you can achieve at 120MHz?
I prepared configuration file (#5130) for Photon board (120 MHz host MCU, BCM43362 Wi-Fi chip) to measure wlan performance.
Based on the current state of the master branch:
- the peak TCP payload throughput (unbuffered mode) is about 13 Mbit/s
- the peak UDP payload throughput (unbuffered mode, checksum enabled) is about 17 Mbit/s
- the peak UDP payload throughput (unbuffered mode, checksum disabled) is about 20 Mbit/s
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[GitHub] [incubator-nuttx] haodi-ioe commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
haodi-ioe commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002849834
Thanks a lot for your performance results，we are now debuging on bcm43438 and will refer your reply.
@xiaoxiang781216 ♡
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002865041
One more question:), @a-lunev how much throughput you can achieve at 120MHz?
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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002619200
@a-lunev could you share some performance and stability data about bcm43xxx? We are very interested in the quality of this driver.
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[GitHub] [incubator-nuttx] a-lunev commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular
Posted by GitBox <gi...@apache.org>.
a-lunev commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002637498
> @a-lunev could you share some performance and stability data about bcm43xxx? We are very interested in the quality of this driver.
I have tested the performance neither based on a raw network traffic nor based on UDP.
Concerning TCP network traffic the peak payload throughput I observed is about 22-23 Mbit/s for BCM43362 chip, about 25 Mbit/s for BCM43438 chip, and about 40 Mbit/s for BCM43455 chip. The performance depends on different factors such as the performance of host CPU, radio-frequency interference etc.
The driver stability looks not bad if the network traffic is not high (less than the peak). If the network traffic is about to the peak, the driver (or chip) sometimes hangs up for some reason. In my previous PRs I fixed some stability issues, however as I can see there are still some hidden ones.
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