Linux how long process running

Thanks for visiting DZone today,. Edit Profile. Sign Out View Profile. Over 2 million developers have joined DZone. Here is an easy two-step process to identify process IDs in Unix systems and then determine how long they've been running for. Like 7. Join the DZone community and get the full member experience. Join For Free. But, if you need that, you should probably use process-auditing approach because the timing of running the stat command is going to interfere with accuracy.

There may be more precise or more parseable but less portable ways to get this information. Check the documentation of your ps command or your proc filesystem. The CPU time is in jiffies; I don't know offhand how to find the jiffy value from the shell.

According to the man page:. Edit : Turns out there's a shorter syntax for the above command; see mattdm's answer. This behavior is explicitly designed to return the process start time, which it can do at high resolution, and which the kernel can do accurately without the jiffies hacks since the kernel can obviously simply check the relevant information.

The access, data-modification and status change fields all return the process start time. Quite stupid the support isn't there if you ask me. If you can run time and then execute a command you will get exactly what you are looking for. You cannot do this against an already-running command. Sign up to join this community. The best answers are voted up and rise to the top.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. How to check how long a process has been running? Ask Question.

Asked 10 years, 8 months ago. Active 1 year, 5 months ago. Viewed k times. I would like to avoid doing this by launching the process from a monitoring app. Improve this question.

Add a comment. Active Oldest Votes. An example of a counting process is the number of job arrivals to a queue over time. If a process has the Markov property, it is said to be a Markov counting process.

If you run it, right click on a process and choose Properties it will show you the start time of the process and you can click on the Threads tab there to see individual thread start times.

Note: You may need to select Yes on a pop-up window to approve running Command Prompt as administrator. Once the command prompt is open, type tasklist and press enter to see a list of processes running on your system. You need to specify the number of JVMs to be started, and the JVM profile and execution key that is to be used for them.

Skip to content Android Windows Linux Apple. Home » Windows.