how to use perforce triggered build in jenkins

Using the Jenkins Perforce Plugin you will be able configure a Jenkins job with a Perforce Client.

In a new freestyle job you will havethe options:

1. Advanced Project Options in which you can specify a custom workspace. This is the folder where the P4 Plugin will sync your client. (which can then be referenced later using the WORKSPACE variable)
2. Source Code Management in which you can configure the Perforce client to use, and how to use it.
3. Build Triggers in which you can choose when you want the build. "Poll SCM" polls your Perforce client for any changes made according to the time parameters you specify (H/5 H(0-19) * * * will check every 5 mins from 12:00 to 19:59), while, I believe, "Build Periodically" will trigger the build according to a schedule. (0 H(20) * * * will trigger a build every evening at 20:00)

I believe it's bad practice on Jenkins to force a job to run at a specific time because Jenkins uses HASH values to try and distribute load on its servers, so a better schedule would be (H H(20) * * *) as this would allow the Jenkins master to trigger the build somewhere between 20:00 and 20:59. The specific times are not random, but are generated internally from the job name