Delay in job start from sequence

[deployDS]

Hi

I have a Job Sequence (Sequence P) as follows

Multi Instance Server Job (Job A) -> Job XY -> Multi instance Server Job (Job B).

We are often noticing that there is a lag before either Job A/ Job B is started.

Following are the log messages
1. 7/11/2010 11:45:41 PM Starting Job Sequence P.
2. 7/11/2010 11:45:41 PM Environment variable settings:
3. 7/11/2010 11:45:41 PM Starting new run of checkpointed Sequence job
4. 7/11/2010 11:49:37 PM (Job A.33342)): Job run requested

There is more than 3 min lost between message 3 and 4. There are good number of similar flows and the small time is adding up to a considerable overhead in the batch cycle. I cannot think of any thing other than assigning/gathering parameters between step 3 and 4. Not sure what is causing delay..any advice would be of help.

Job XY always starts without a delay but i see an inconsistent lag for both Job A and Job B