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Measures reported by Exc2013HttpQueTest
By monitoring request queues to every Exchange application pool, administrators can identify those application pools that have too many requests pending and those with a high request rejection rate. This is exactly what the Exc2013HttpQueTest test does.
This test auto-discovers the application pools and reports the length of request queues and rejection rate of requests in queue for each application pool. This way, the test sheds light on those application pools that suffer from processing pains.
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| Arrival_rate |
Indicates the rate at which requests are arriving in the request queue of this application pool. |
Reqs/Sec |
A high rate could indicate a probable request overload on an application pool. |
| Cur_que_size |
Indicates the current number of requests in the queue of this application pool. |
Number |
If this value increases consistently, it could indicate that the application pool is not processing requests quickly. Compare the value of this measure across pools to identify the pool with a processing bottleneck. |
| Rejected_req |
Indicates the number of requests in this application pool's queue that were rejected. |
Number |
A non-zero value is desired for this measure. |
| Cache_hit_rate |
Indicates the rate of cache hits from the queue of this application pool. |
Hits/sec |
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| Rejection_rate |
Indicates the rate at which this application pool rejected requests in the queue. |
Reqs/Sec |
Compare the value of this measure across pools to know which pool rejects queued requests frequently. |
| Max_queue_age |
Indicates the age of the oldest request in the queue. |
Reqs/Sec |
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