by Ken Task.
Not going to run them all ... from the list ... think the names are enough for your purposes.
since you had a whoppie of some sort dealing with what looked like to be unoconv
\\assignfeedback_editpdf\\task\\convert_submissions
Anything with 'clean up' in it:
\\logstore_standard\\task\\cleanup_task
\\core\\task\\backup_cleanup_task
\\core\\task\\cache_cleanup_task
\\core\\task\\file_temp_cleanup_task
\\core\\task\\file_trash_cleanup_task
\\core\\task\\session_cleanup_task
\\core_files\\task\\conversion_cleanup_task
\\tool_recyclebin\\task\\cleanup_category_bin
\\tool_recyclebin\\task\\cleanup_course_bin
Remember, your cron hasn't been running for a couple of days? or that's what I gathered.
Good luck!
'spirit of sharing', Ken