View the current number of concurrent requests of Apache

We often need to check the number of httpd processes for optimization (that is, the number of concurrent requests that Apache can process in prefork mode ):

Linux Command:

PS-Ef | grep httpd | WC-l

The result is the number of concurrent requests that Apache can process. This value is automatically adjusted based on the load.

# Ps-Ef | grep httpd | WC-l
27

PS-EF is to view all processes, and then filter the process information you want through grep

Parameter description:-e displays all processes in the full-F format.

# Ps-Ef | grep httpd

Parameter description: Check all httpd processes.

# Ps-Ef | grep httpd | WC-l

Parameter description: Check all httpd processes and output only the number of file lines through WC-L.

WC command
WC-C filename: displays the number of bytes of a file.
WC-M filename: display the number of characters in a file
WC-l filename: display the number of lines in a file
WC-l filename: display the maximum length of a file
WC-W filename: display the number of words in a file
run wc wc1.txt directly:
[ROC [email protected] programming] $ WC wc1.txt
3 5 16 wc1.txt
the output information is as follows: number of lines, number of characters, and number of bytes.