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【20.03-SP1】用板载网卡测试nginx性能，客户端在流量很低的情况下CPU 占用率达到100%
已完成
#I29L21
缺陷
ricky.z
创建于
2020-12-16 10:42
【环境信息】 系统：arm 源：everything 【问题复现步骤】 1.使用httpress压测工具测试nginx性能，2个clients，其中一个client是1822网卡，一个client是板载TM280网卡（25G） 2.两个client上同时用400并发压测nginx http短连接性能，压测命令： httpress -n 50000000 -c 400 -t 400 http://192.168.4.10:10000/index.html 【预期结果】 各个客户端没有明显热点，CPU占用率差异不大 【实际结果】 1、发现1822网卡的client CPU占用率20%-30%，而TM280网卡上CPU占用达到100%（所有96个核）； 2、TM280 client上看到内核函数__inet_hash_connect和__inet_check_established函数内核占用率达到45%； 如果网络本地端口范围不够可能会造成该问题，但检查发现OS的端口范围是32768-60999，而端口使用量只有18XXX，没到上限，所以非该原因    
【环境信息】 系统：arm 源：everything 【问题复现步骤】 1.使用httpress压测工具测试nginx性能，2个clients，其中一个client是1822网卡，一个client是板载TM280网卡（25G） 2.两个client上同时用400并发压测nginx http短连接性能，压测命令： httpress -n 50000000 -c 400 -t 400 http://192.168.4.10:10000/index.html 【预期结果】 各个客户端没有明显热点，CPU占用率差异不大 【实际结果】 1、发现1822网卡的client CPU占用率20%-30%，而TM280网卡上CPU占用达到100%（所有96个核）； 2、TM280 client上看到内核函数__inet_hash_connect和__inet_check_established函数内核占用率达到45%； 如果网络本地端口范围不够可能会造成该问题，但检查发现OS的端口范围是32768-60999，而端口使用量只有18XXX，没到上限，所以非该原因    
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