We have received reports that WEC subscriptions for some yet undiscovered reason will stall. The subscription will remain active but just stops working. The svchost.exe process running EventLog shows 0% CPU usage. Microsoft has been made aware of the issue but there is no fix for it yet.
With the release of Supercharger 21.8.4 a new feature has been added, Stalled Subscription Watchdog. This feature is enabled by default after installation by the StalledSubWatchdogEnabled override. There are two override settings to configure this feature:
- StalledSubWatchdogThresholdPercent (default 3)
- StalledSubWatchdogMinSecondsBetweenRetries (default 3600)
A subscription is considered stalling, if meets the following criteria:
- it is enabled
- it doesn't meet the number of healthy forwarders specified by its subscription policy
- the percentage of healthy forwarders is lower than StalledSubWatchdogThresholdPercent
If the watchdog is enabled by StalledSubWatchdogEnabled and the subscription has been stalling for at least StalledSubWatchdogMinSecondsBetweenRetries seconds, a retry will be initiated on the subscription and an Info message will be posted.
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