I am looking at my performance profile of one of my slowest requests, and I see an AWAIT_TIME of more than 6 seconds, but I am not able to get any more information regarding it. How do I figure out what exactly the process is "waiting on"?
what does AWAIT_TIME exactly mean in the Azure profiler?
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From Azure's documentation:
Waiting (AWAIT_TIME)
AWAIT_TIMEindicates the code is waiting for another task to complete. This typically happens with C# 'await' statement. When the code does a C# 'await', the thread unwinds and returns control to the thread-pool, and there is no thread that is blocked waiting for the 'await' to finish. However, logically the thread that did the await is 'blocked' waiting for the operation to complete. TheAWAIT_TIMEindicates the blocked time waiting for the task to complete.+Blocked Time
BLOCKED_TIMEindicates the code is waiting for another resource to be available, such as waiting for a synchronization object, waiting for a thread to be available, or waiting for a request to finish.So it's waiting on something necessary to continue with processing. We have had the same problem of long
AWAIT_TIMEwith file uploads and it turned out the request was waiting for the Request's stream to be read (ReadAsMultiPartAsync()for us)... If you look at the code inRecASPRequestand_RtlUserThreadStart, you'll probably the culprit...