jmeter壓測配置

windows上面修改最大使用端口數和time_await等待時間

註冊表須要添加兩個配置，位置：
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters

 

MaxUserPort :65534

TcpTimedWaitDelay:30

 

然而這麼配置了以後，壓測一段時間任然會有connect use錯誤提示出現，懷疑是jmeter沒有重用keep alive，官方配置發現有三個配置參數比較可疑：

# Idle connection timeout (Milliseconds) to apply if the server does not send

# Keep-Alive headers (default 0)

# Set this > 0 to compensate for servers that don't send a Keep-Alive header

# If <= 0, idle timeout will only apply if the server sends a Keep-Alive header

httpclient4.idletimeout=10000

# Check connections if the elapsed time (Milliseconds) since the last

# use of the connection exceed this value

httpclient4.validate_after_inactivity=0

# TTL (in Milliseconds) represents an absolute value.

# No matter what, the connection will not be re-used beyond its TTL.

httpclient4.time_to_live=0

 

這麼調整了配置以後仍是不靠譜，jmeter.properties，user.properties這兩個文件都修改過，任然有錯誤出現。

 

 

最好在官方發現這麼一段話：

Use KeepAlive

 

JMeter sets the Connection:  keep-alive header. This does not work properly with the default HTTP implementation, as connection re-use is not under user-control. It does work with the Apache HttpComponents HttpClient implementations.

 

懷疑是jmeter使用的client的問題，把Http Request->Advanced裏面的Client Implement選擇爲Java以後，問題解決，1000併發跑了很久都沒有出錯㋡