# Orin TCP 和 UDP 吞吐率对比

**URL:** <https://forums.developer.nvidia.com/t/orin-tcp-udp/290737>\
**Category:** Jetson AGX Orin\
**Tags:** chinese, ethernet\
**Created:** [April 24, 2024, 11:57am UTC](https://forums.developer.nvidia.com/t/orin-tcp-udp/290737 "2024-04-24T11:57:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![809656875](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/809656875/32/122779_2.png) [@809656875](https://forums.developer.nvidia.com/u/809656875)\
**Post date:** [April 24, 2024, 11:57am UTC](https://forums.developer.nvidia.com/t/orin-tcp-udp/290737/1 "2024-04-24T11:57:26Z")

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Hi NV team:

我在使用两台ORIN进行网络速率的测试，测试的方式如下：  
在一台ORIN（ip 为192.168.1.102）执行,  
iperf3 -s  
另一台ORIN（ip 为192.168.1.103）  
测试TCP速率命令是  
iperf3 -c 192.168.1.102 -b0  
速率能达到9.3Gbits/s左右

 ![图片](https://global.discourse-cdn.com/nvidia/original/4X/3/b/2/3b27a1dfd549fc0b911c0f92afffdadab010426c.png)

测试UDP命令时  
iperf3 -c 192.168.1.102 -u -b0 -l 65507

 ![图片](https://global.discourse-cdn.com/nvidia/original/4X/e/9/e/e9e48fbf2323a6249994c1d1cd9436bd3c380749.png)  
速率仅为到3.7Gbits/s左右

我也尝试增大套接字缓冲区，比如用如下命令：  
echo 16777216 \> /proc/sys/net/core/rmem\_max  
echo 16777216 \> /proc/sys/net/core/rmem\_default  
echo 16777216 \> /proc/sys/net/core/wmem\_max  
echo 16777216 \> /proc/sys/net/core/wmem\_default  
但并未有多大改善效果。  
所以想请问一下，如何再提升UDP的速率。

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<div class="post-metadata">

**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\
**Post date:** [April 25, 2024, 2:35am UTC](https://forums.developer.nvidia.com/t/orin-tcp-udp/290737/3 "2024-04-25T02:35:18Z")

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Please try to set the MTU from 1500 to higher value.

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<div class="post-metadata">

**Author:** ![809656875](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/809656875/32/122779_2.png) [@809656875](https://forums.developer.nvidia.com/u/809656875)\
**Post date:** [April 26, 2024, 9:43am UTC](https://forums.developer.nvidia.com/t/orin-tcp-udp/290737/4 "2024-04-26T09:43:07Z")

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您好 wayneWWW,  
mtu改位9000之后，达到了9Gbits/s的速率，显著提升。  
还想请问下，我如何能使中断均衡到每个CPU啊，现在是绑定在CPU0.

 ![图片](https://global.discourse-cdn.com/nvidia/original/4X/3/4/5/345c5a49dc51e66de91e46a146a9087d87de54ef.png)

我使用如下的方法没有效果  
我查到eth0.common\_irq 中断号为70  
echo fff \> /proc/irq/70/smp\_affinity  
后无效果；