Hi,
Running apache on centos server,
i am not able to browse my site due to huge cpu consumption,
Then i monitored cpu using top command,
Below is the output, php-cgi consuming huge cpu,

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21854 octane 19 0 212m 23m 8808 S 26.9 0.7 0:27.21 php-cgi
21782 octane 17 0 212m 23m 8808 S 24.6 0.7 0:34.30 php-cgi
21858 octane 16 0 212m 23m 8808 S 18.3 0.7 0:28.67 php-cgi
21749 octane 15 0 237m 41m 9312 R 14.0 1.2 0:42.54 php-cgi
21833 octane 18 0 212m 23m 8808 S 14.0 0.7 0:28.27 php-cgi
21850 octane 15 0 212m 23m 8808 S 12.3 0.7 0:20.85 php-cgi
21878 octane 18 0 212m 23m 8808 S 12.0 0.7 0:16.74 php-cgi
21757 octane 18 0 212m 23m 8808 S 11.0 0.7 0:41.46 php-cgi
21852 octane 16 0 211m 23m 8808 S 11.0 0.7 0:26.03 php-cgi
21533 octane 18 0 221m 32m 8808 R 10.6 0.9 1:57.95 php-cgi
21773 octane 18 0 212m 23m 8808 S 9.3 0.7 0:40.95 php-cgi
21653 octane 18 0 212m 23m 8808 S 3.0 0.7 1:14.30 php-cgi
16152 mysql 17 0 343m 61m 6960 S 1.0 1.7 0:38.89 mysqld

Thanks
Suresh

Ok...so what do you think we can tell you from that?

Unless you post DETAILS, there's nothing we can help you with. You don't say what version of CentOS or Apache you're using, how many sites you're hosting, network speeds, number of users, type of website(s), etc. ANYTHING that would be relevant to diagnosing a problem on a web server. Basic diagnostics would be to see if there are any error(s) in the Apache or vlogger logs, and check the programs that PHP is running. Have you done ANY of that?

Obviously, the probability of "a silly (in retrospect, o'course) programming bug" is pretty darned near 100%.

And no, I am not making fun of you. The very first program I ever wrote had a bug in it ... and so has every single one since then.

Give us more information, and we will all be pleased to try to help you.

the issue was trozen attack, hosting people get resolved the issue,


Thanks
Suresh