[FS#891] Slow download speed over Ethernet (wpj344, QCA8334)

LEDE Bugs lede-bugs at lists.infradead.org
Thu Jul 6 02:26:45 PDT 2017


A new Flyspray task has been opened.  Details are below. 

User who did this - HenryGiraldo (HenryGiraldo) 

Attached to Project - LEDE Project
Summary - Slow download speed over Ethernet (wpj344, QCA8334)
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - 
Version: Reboot (SNAPSHOT, r4512+1-f3ae0f8), master/trunk
Device: wpj344 (Switch 	QCA8334)
Problem: Slow download speed over Ethernet, upload works fine.
Steps to reproduce: Use iperf tool to perform network throughput test.

root at LEDE:~# iperf3 -s
-----------------------------------------------------------                                
Server listening on 5201                     
-----------------------------------------------------------                                
Accepted connection from 192.168.1.200, port 51144                                         
[  5] local 192.168.1.1 port 5201 connected to 192.168.1.200 port 51146                    
[ ID] Interval           Transfer     Bandwidth                                            
[  5]   0.00-1.00   sec   294 KBytes  2.41 Mbits/sec                                       
[  5]   1.00-2.00   sec   390 KBytes  3.20 Mbits/sec                                       
[  5]   2.00-3.00   sec   192 KBytes  1.58 Mbits/sec                                       
[  5]   3.00-4.00   sec   291 KBytes  2.39 Mbits/sec                                       
[  5]   4.00-5.00   sec  99.0 KBytes   810 Kbits/sec                                       
[  5]   5.00-6.00   sec  79.2 KBytes   649 Kbits/sec                                       
[  5]   6.00-7.00   sec   281 KBytes  2.31 Mbits/sec                                       
[  5]   7.00-8.00   sec   165 KBytes  1.36 Mbits/sec                                       
[  5]   8.00-9.00   sec   262 KBytes  2.14 Mbits/sec                                       
[  5]   9.00-10.00  sec   117 KBytes   961 Kbits/sec                                       
[  5]  10.00-10.01  sec  0.00 Bytes  0.00 bits/sec                                         
- - - - - - - - - - - - - - - - - - - - - - - - -                                          
[ ID] Interval           Transfer     Bandwidth                                            
[  5]   0.00-10.01  sec  0.00 Bytes  0.00 bits/sec                  sender                 
[  5]   0.00-10.01  sec  2.12 MBytes  1.78 Mbits/sec                  receiver

Using exactly the same node and the same setup and reverting:

commit 967b6be118e3217e8d6a28df9c615d3255e7b1ae     
Author: Vittorio Gambaletta    
Date:   Sun Mar 26 10:08:20 2017 +0200              

    ar8327: Add workarounds for AR8337 switch.

The new results are:

root at LEDE:~# iperf3 -s    
-----------------------------------------------------------                                             
Server listening on 5201  
-----------------------------------------------------------                                             
Accepted connection from 192.168.1.200, port 50800  
[  5] local 192.168.1.1 port 5201 connected to 192.168.1.200 port 50802                                 
[ ID] Interval           Transfer     Bandwidth     
[  5]   0.00-1.00   sec  27.5 MBytes   230 Mbits/sec                                                    
[  5]   1.00-2.01   sec  24.1 MBytes   201 Mbits/sec                                                    
[  5]   2.01-3.00   sec  23.5 MBytes   198 Mbits/sec                                                    
[  5]   3.00-4.01   sec  24.1 MBytes   201 Mbits/sec                                                    
[  5]   4.01-5.00   sec  27.4 MBytes   231 Mbits/sec                                                    
[  5]   5.00-6.00   sec  25.1 MBytes   210 Mbits/sec                                                    
[  5]   6.00-7.00   sec  28.3 MBytes   238 Mbits/sec                                                    
[  5]   7.00-8.00   sec  30.2 MBytes   253 Mbits/sec                                                    
[  5]   8.00-9.00   sec  21.6 MBytes   181 Mbits/sec                                                    
[  5]   9.00-10.00  sec  28.6 MBytes   241 Mbits/sec                                                    
[  5]  10.00-10.01  sec   181 KBytes   128 Mbits/sec                                                    
- - - - - - - - - - - - - - - - - - - - - - - - -   
[ ID] Interval           Transfer     Bandwidth     
[  5]   0.00-10.01  sec  0.00 Bytes  0.00 bits/sec                  sender                              
[  5]   0.00-10.01  sec   261 MBytes   218 Mbits/sec             receiver   



 

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=891



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