Pfthb

Here is a graph showing periodic CPU usage:

Here is the story:

11/08 12:30 to 11/08 23:25 at or near 100% cpu (11-hours)

11/08 23:25 to 11/09 01:40 at or neat 001% cpu (2 hours)

11/09 01:40 to 11/09 07:40 at or near 100% cpu (6 hours)

11/09 07:40 to 11/09 10:40 at or near 001% cpu (3 hours)

11/09 10:40 to 11:09 17:15 at or near 100% cpu (7 hours)

at 11/09 17:15 I stopped website for 1 min, restarted and less than 1% CPU at the time of this writing.

Prior to 11/08 cpu usage rarely exceeded 15% since 10/08/2018

Google Analytics: 6 users, 77 page views, avg. session duration: 15:13 minutes.

Given the above information there appears to be no correlation to site requests and the 100% cpu usage.

Looking at Azure's cpu usage graph there seems to be a pattern affecting nmcrg.azurewebsites.net It appears to be a periodic pegging of the CPU from some other process.

There are 5 other web sites on this VM, but they are all running well below 10% cpu time. Just the NMCRG.Net site is showing 100% cpu.

Running the same web app locally on IIS does no show any affect like the above cpu usage.

There is no apparent DDOS attack given the request over this period.

The application is an ASP.Net MVC Core 2.1

Azure says the app is healthy....restart of app does not seem to fix CPU usage.