Performance problem loading packages

We're having a performance problem with a package since an error occurred. The original error came from the Job Manager whicj was unable to start a thread. Our understanding is that this is a memory related issue and we'll deal with that.

What is realy odd is what happened after that. The package executes from a SQL Agent job that includes 3 other packages. Each package is stored on the file system. Package execution time for the affected package changed from less than a minute to over 5 minutes. The other packages continued to execute normally.

In checking the logs there is large time gap between the start of the SQL Agent step and the first pre-validation message that accounts for 4 minutes, as if there is some issue in loading the package. The issue is ongoing. Does anyone know what happens between the start of the SQL Agent job and the first prevalidate message? Is this some type of caching issue?

SQL Agent step starts at 4:05:27

First Prevalidate message: 4:09:24

Package Execution start: 4:09:57

End Execution 4:10:59

thanks

Peter

Rebooting the server fixed the immediate problem.