jde log size of job launched through scheduler increases rapidly whenever scheduler server is reatrt

Hi experts,

I have observed that whenever I restart scheduler server then log size of job launched by scheduler increases rapidly(it goes to anywhere between 10-5000KB).This happens for first 15 mins when scheduler server is restarted and then everything settle down after 15 mins(log size come down to normal).I am curious to know whether it is normal after scheduler restart? Also jobs are completing successfully. we don't have any job launching issue.But only thing is that jde log size increases very rapidly.