Comment 1 for bug 1945003

Here's a fix:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1945003-vand-tracker-serialize

To test, do about 20 Vandelay imports (if you don't already have a bunch of session data). Load the Recent Imports interface and confirm many sessions are displayed, but the number of pcrud processes remains well lower than the number of sessions.

On my test VM with 20 recent imports, my open-ils.pcrud drone count never exceeds 7 (which is 1 over min-child + min-idle).