TFS resets every 1 hour which makes plugin code disabled

Hi,

I found TFS Production server is triggering this reset every 1 hour and my server side plugin code is not triggered when work item is saved at that time (few seconds)

Any idea about it?

Thanks

Divya

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TF200030: Team Foundation Server completed group synchronization for the following group: Sync Tree.

Incremental sync (current cycle start time (UTC) 4/23/2015 7:00:11 PM, cycle duration 1.00:00:00, number of syncs per cycle 24).

Application Domain: TfsJobAgent.exe

Service Host:       3537ad05-4b2c-446f-8bcc-a81bb9a3d235 (TEAM FOUNDATION)