This is a consequence of #1685. When any of the counters in question is specified, the collector stops collecting the other counters after 5-6 successful iterations.

Repro Steps

1. Specify any of the following counters to collect:

• \.NET CLR Memory(??APP_CLR_PROC??)\# Total committed Bytes
• \ASP.NET Applications(??APP_W3SVC_PROC??)\Request Bytes In Total
• \ASP.NET Applications(??APP_W3SVC_PROC??)\Request Bytes Out Total

2. Specify any other counter, or just leave the default counters

Actual Behavior

After deploy, all counters apart from the faulty ones are collected and sent only 5-6 times (a few minutes). After that, nothing is collected (nor sent).

Expected Behavior

Non-faulty counters being collected successfully during the app lifetime.

Version Info

SDK Version : 2.12.1
.NET Version : 4.7
Hosting Info : Azure WebApps