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How to find what an Apache httpd process is doing? - Server Fault
https://serverfault.com/questions/473866/how-to-find-what-an-apache-httpd-process-is-doing
You can use the common strace command to trace what your httpd is doing. your command would be like the folloing: strace -f -o trace.txt /etc/rc.d/init.d/httpd start The "-f" strace option traces child processes as they are created by currently traced processes as a result of the 'fork' system call.
Need help in tracing httpd processes by nobody | cPanel Forums
https://forums.cpanel.net/threads/need-help-in-tracing-httpd-processes-by-nobody.462451/
For past one week, 3-4 random nobody owned processes use 200-300% CPU usage each. I tried to trace it with the help of server support guys but looks like we are looking in the wrong direction. I thought, it might help me to trace the issues by getting views of cPanel forum members. Here are the details of server: CentOS 6.6 Apache 2.4.12 PHP 5.5.23
Tracking hung httpd processes | cPanel Forums
https://forums.cpanel.net/threads/tracking-hung-httpd-processes.1871/
After a period of time one httpd process will begin using 60-90% of the processor and stay that way until Apache gets restarted. If a few hours go by another process or two will join in on the fun equally dividing the 90% processor usage …
Server load, and tracing httpd processes | Web Hosting Talk
https://www.webhostingtalk.com/showthread.php?t=674958
Server load, and tracing httpd processes - I have a server that has server load showing at 25-40 (once it was even 53!), running like that for hours. The server has 4 cpus - …
Server load, and tracing httpd processes
https://www.webhostingtalk.com/printthread.php?t=674958&page=1
Is there any way to trace an httpd processes - which account it's for, or which physical script or URL is calling it? And for top itself, the TIME field on one server of mine is in the format xx:xx (e.g. 3:25), on another it's TIME+ and in the format xx:xx.xx (e.g. …
Apache HTTPD Debugging Guide - The Apache HTTP …
https://httpd.apache.org/dev/debugging.html
Invoke the Task Manager, Choose 'show processes from all users', and modify the View -> Select Columns to include at least the PID and Thread Count. You can change this just once and Task Manager should keep your preference. Now, track down the errant Apache that is hanging. The parent process has about three threads, we don't care about that one.
linux - how to find out all the PID of Apache httpd processes that …
https://serverfault.com/questions/271337/how-to-find-out-all-the-pid-of-apache-httpd-processes-that-are-in-reading-state
2 Answers Sorted by: 4 Try using netstat program with the -l flag to get a list of listening process. You probably want to run it with sudo so that you can use the -p flag to get process PIDs. You might also want the -t flag to only show tcp sockets instead of tcp and udp.
Problems with Apache servers and A LOT of httpd …
https://stackoverflow.com/questions/15922194/problems-with-apache-servers-and-a-lot-of-httpd-processes
After installing mod_evasive, the dozens of httpd processes showing via top were all but eliminated and my mysql CPU load went from an average 100%+ / 99% of the time utilization down to an expected 20% load during heavier query operations. To install mod_evasive, on RHEL (CentOS/Fedora/Redhat) systems, do: yum install -y mod_evasive Restart Apache
Analyzing httpd process through strace – afzalhaque
https://afzalhaque.wordpress.com/2015/09/08/analyzing-httpd-process-through-strace/
Appendix: Detailed Analysis of a Trace Here is a system call trace of Apache 2.0.38 with the worker MPM on Solaris 8. This trace was collected using: truss -l -p httpd_child_pid. The -l option tells truss to log the ID of the LWP (lightweight process--Solaris's form of kernel-level thread) that invokes each system call. Other systems may have…
Monitoring Apache HTTPd
https://www.ibm.com/docs/SSE1JP5_current/src/pages/ecosystem/apache-httpd/index.html
You can manually install HTTPd Tracing Module in following steps: Get the right modules for your HTTP Server version. Copy the modules to your HTTP Server modules folder. Load the modules in your HTTPd configuration file. Download the Modules
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