using 7.3.0 (499) on IIS8.5
I'm seeing significant delays in the log on process, between 30 and 40sec. In addition, the CPU usage on the webserver spikes to 60% (from 0) and the memory usage increases to over 700MB, from around 250MB when idle (memory is released after the log on process completes).
The delay and cpu/memory spikes only appear if no one has logged on for a while (after app pool recycle ??). I did a db trace on a "delayed log on" (to check if I'm having a db issue) and can see two (time) gaps between queries coming in - first one is about 10sec, the second one around 30sec. All queries complete within milliseconds.
I also traced a "quick log on" and there's significantly less happening there. There is a whole block of sp's being executed on the "delayed" log on that don't happen during the "quick log on": AddScheduleHistory, AddEventLog, PurgeEventLog, UpdateScheduleHistory and GetVocabularies.
What's the application doing there and is there any way to tune this?
Is anyone else seeing this?
TIA - Marcus.