Difference between revisions of "Manual:Queues - Burst"

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# '''average-rate''' (read-only) : Every 1/16 part of the '''burst-time''', the router calculates the average data rate of each class over the last '''burst-time''' seconds.
 
# '''average-rate''' (read-only) : Every 1/16 part of the '''burst-time''', the router calculates the average data rate of each class over the last '''burst-time''' seconds.
 
# '''actual-rate''' (read-only) : actual traffic transfer rate of the queue
 
# '''actual-rate''' (read-only) : actual traffic transfer rate of the queue
 
==Example 1==
 
  
 
Values:
 
Values:
Line 29: Line 27:
 
'''burst-limit=4M'''
 
'''burst-limit=4M'''
  
'''burst-time=8s'''
+
Client will try to download two 4MB (32Mb) files, first download will start at zero seconds, second download will start at 17th second. Traffic was unused for last minute.
 +
 
 +
==Example Burst-time=16s==
 +
 
 +
 
 +
[[Image:Burst time.16.part1.JPG]]
 +
[[Image:Burst time.16.part2.JPG]]
  
Client will try to download
 
  
 +
Average rate is calculated every 1/16 of burst time, so in this case 1s
  
 +
:Zero second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0)/16=0Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:1,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+4)/16=250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:2,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+4+4)/16=500Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:3,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+4+4+4)/16=750Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:4,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+4+4+4+4)/16=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:5,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+4+4+4+4+4)/16=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:6,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+4+4+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst '''not''' allowed -> '''Actual-rate=2Mbps'''
 +
:7,0  second - average-rate=(0+0+0+0+0+0+0+0+0+4+4+4+4+4+4+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:8,0  second - average-rate=(0+0+0+0+0+0+0+0+4+4+4+4+4+4+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:9,0  second - average-rate=(0+0+0+0+0+0+0+4+4+4+4+4+4+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:10,0 second - average-rate=(0+0+0+0+0+0+4+4+4+4+4+4+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> '''Actual-rate=0Mbps'''
 +
:11,0 second - average-rate=(0+0+0+0+0+4+4+4+4+4+4+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:12,0 second - average-rate=(0+0+0+0+4+4+4+4+4+4+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:13,0 second - average-rate=(0+0+0+4+4+4+4+4+4+2+2+2+2+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:14,0 second - average-rate=(0+0+4+4+4+4+4+4+2+2+2+2+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:15,0 second - average-rate=(0+4+4+4+4+4+4+2+2+2+2+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:16,0 second - average-rate=(4+4+4+4+4+4+2+2+2+2+0+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:17,0 second - average-rate=(4+4+4+4+4+2+2+2+2+0+0+0+0+0+0+0)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:18,0 second - average-rate=(4+4+4+4+2+2+2+2+0+0+0+0+0+0+0+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:19,0 second - average-rate=(4+4+4+2+2+2+2+0+0+0+0+0+0+0+2+2)/16=1375Kbps, average-rate < burst-threshold -> Burst '''is''' allowed -> Actual-rate=4Mbps
 +
:20,0 second - average-rate=(4+4+2+2+2+2+0+0+0+0+0+0+0+2+2+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:21,0 second - average-rate=(4+2+2+2+2+0+0+0+0+0+0+0+2+2+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:22,0 second - average-rate=(2+2+2+2+0+0+0+0+0+0+0+2+2+4+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 +
:23,0 second - average-rate=(2+2+2+0+0+0+0+0+0+0+2+2+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst '''not''' allowed -> Actual-rate=2Mbps
 +
:24,0 second - average-rate=(2+2+0+0+0+0+0+0+0+2+2+4+4+4+4+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:25,0 second - average-rate=(2+0+0+0+0+0+0+0+2+2+4+4+4+4+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:26,0 second - average-rate=(0+0+0+0+0+0+0+2+2+4+4+4+4+2+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:27,0 second - average-rate=(0+0+0+0+0+0+2+2+4+4+4+4+2+2+2+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:28,0 second - average-rate=(0+0+0+0+0+2+2+4+4+4+4+2+2+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 +
:29,0 second - average-rate=(0+0+0+0+2+2+4+4+4+4+2+2+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:30,0 second - average-rate=(0+0+0+2+2+4+4+4+4+2+2+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 +
:31,0 second - average-rate=(0+0+2+2+4+4+4+4+2+2+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
  
[[Image:Burst time.8.part1.JPG]]
 
[[Image:Burst time.8.part2.JPG]]
 
  
  
 +
==Example Burst-time=8s==
  
  
 +
[[Image:Burst time.8.part1.JPG]]
 +
[[Image:Burst time.8.part2.JPG]]
  
  
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:27,0 second - average-rate=(2+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
 
:27,0 second - average-rate=(2+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
 
:27,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
 
:27,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
-----
+
:28,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
 
+
:28,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
==Example Burst-time=16s==
+
:29,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
 
+
:29,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps  (1Mb per 0,5sek)
[[Image:Burst time.16.part1.JPG]]
+
:30,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
[[Image:Burst time.16.part2.JPG]]
+
:30,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps  (0Mb per 0,5sek)
 
+
:31,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+0)/8=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
 
 
Average rate is calculated every 1/16 of burst time, so in this case 1s
 
 
 
:Zero second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0)/16=0Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:1,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+4)/16=250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:2,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+4+4)/16=500Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:3,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+4+4+4)/16=750Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:4,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+4+4+4+4)/16=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:5,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+4+4+4+4+4)/16=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:6,0  second - average-rate=(0+0+0+0+0+0+0+0+0+0+4+4+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst '''not''' allowed -> '''Actual-rate=2Mbps'''
 
:7,0 second - average-rate=(0+0+0+0+0+0+0+0+0+4+4+4+4+4+4+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:8,0 second - average-rate=(0+0+0+0+0+0+0+0+4+4+4+4+4+4+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:9,0 second - average-rate=(0+0+0+0+0+0+0+4+4+4+4+4+4+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:10,0 second - average-rate=(0+0+0+0+0+0+4+4+4+4+4+4+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> '''Actual-rate=0Mbps'''
 
:11,0 second - average-rate=(0+0+0+0+0+4+4+4+4+4+4+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:12,0 second - average-rate=(0+0+0+0+4+4+4+4+4+4+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:13,0 second - average-rate=(0+0+0+4+4+4+4+4+4+2+2+2+2+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:14,0 second - average-rate=(0+0+4+4+4+4+4+4+2+2+2+2+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:15,0 second - average-rate=(0+4+4+4+4+4+4+2+2+2+2+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:16,0 second - average-rate=(4+4+4+4+4+4+2+2+2+2+0+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:17,0 second - average-rate=(4+4+4+4+4+2+2+2+2+0+0+0+0+0+0+0)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:18,0 second - average-rate=(4+4+4+4+2+2+2+2+0+0+0+0+0+0+0+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:19,0 second - average-rate=(4+4+4+2+2+2+2+0+0+0+0+0+0+0+2+2)/16=1375Kbps, average-rate < burst-threshold -> Burst '''is''' allowed -> Actual-rate=4Mbps
 
:20,0 second - average-rate=(4+4+2+2+2+2+0+0+0+0+0+0+0+2+2+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:21,0 second - average-rate=(4+2+2+2+2+0+0+0+0+0+0+0+2+2+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:22,0 second - average-rate=(2+2+2+2+0+0+0+0+0+0+0+2+2+4+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
 
:23,0 second - average-rate=(2+2+2+0+0+0+0+0+0+0+2+2+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst '''not''' allowed -> Actual-rate=2Mbps
 
:24,0 second - average-rate=(2+2+0+0+0+0+0+0+0+2+2+4+4+4+4+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:25,0 second - average-rate=(2+0+0+0+0+0+0+0+2+2+4+4+4+4+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:26,0 second - average-rate=(0+0+0+0+0+0+0+2+2+4+4+4+4+2+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:27,0 second - average-rate=(0+0+0+0+0+0+2+2+4+4+4+4+2+2+2+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:28,0 second - average-rate=(0+0+0+0+0+2+2+4+4+4+4+2+2+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
 
:29,0 second - average-rate=(0+0+0+0+2+2+4+4+4+4+2+2+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:30,0 second - average-rate=(0+0+0+2+2+4+4+4+4+2+2+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
:31,0 second - average-rate=(0+0+2+2+4+4+4+4+2+2+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
[[Category:Manual]]
 
[[Category:Manual]]
 
[[Category:Unfinished]]
 
[[Category:Unfinished]]

Revision as of 15:26, 14 October 2008

Theory

Burst is a feature that allows to satisfy queue requirement for additional bandwidth even if required rate is bigger that MIR (max-limit) for a short period of time.

Burst can occur only if average-rate of the queue for the last burst-time seconds is smaller that burst-threshold. Burst must stop if average-rate of the queue for the last burst-time seconds is bigger or equal to burst-threshold

Burst mechanism is simple - if burst is allowed max-limit value is replaced by burst-limit value. When burst is disallowed max-limit value remains unchanged.


  1. burst-limit (NUMBER) : maximal upload/download data rate which can be reached while the burst is allowed
  2. burst-time (TIME) : period of time, in seconds, over which the average data rate is calculated. (This is NOT the time of actual burst)
  3. burst-threshold (NUMBER) : basically this is value of burst on/off switch.
  4. average-rate (read-only) : Every 1/16 part of the burst-time, the router calculates the average data rate of each class over the last burst-time seconds.
  5. actual-rate (read-only) : actual traffic transfer rate of the queue

Values:

limit-at=1M

max-limit=2M

burst-threshold=1500k

burst-limit=4M

Client will try to download two 4MB (32Mb) files, first download will start at zero seconds, second download will start at 17th second. Traffic was unused for last minute.

Example Burst-time=16s

Burst time.16.part1.JPG Burst time.16.part2.JPG


Average rate is calculated every 1/16 of burst time, so in this case 1s

Zero second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0)/16=0Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
1,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+4)/16=250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
2,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+4+4)/16=500Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
3,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+4+4+4)/16=750Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
4,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+4+4+4+4)/16=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
5,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+4+4+4+4+4)/16=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
6,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+4+4+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
7,0 second - average-rate=(0+0+0+0+0+0+0+0+0+4+4+4+4+4+4+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
8,0 second - average-rate=(0+0+0+0+0+0+0+0+4+4+4+4+4+4+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
9,0 second - average-rate=(0+0+0+0+0+0+0+4+4+4+4+4+4+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
10,0 second - average-rate=(0+0+0+0+0+0+4+4+4+4+4+4+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
11,0 second - average-rate=(0+0+0+0+0+4+4+4+4+4+4+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
12,0 second - average-rate=(0+0+0+0+4+4+4+4+4+4+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
13,0 second - average-rate=(0+0+0+4+4+4+4+4+4+2+2+2+2+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
14,0 second - average-rate=(0+0+4+4+4+4+4+4+2+2+2+2+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
15,0 second - average-rate=(0+4+4+4+4+4+4+2+2+2+2+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
16,0 second - average-rate=(4+4+4+4+4+4+2+2+2+2+0+0+0+0+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
17,0 second - average-rate=(4+4+4+4+4+2+2+2+2+0+0+0+0+0+0+0)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
18,0 second - average-rate=(4+4+4+4+2+2+2+2+0+0+0+0+0+0+0+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
19,0 second - average-rate=(4+4+4+2+2+2+2+0+0+0+0+0+0+0+2+2)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
20,0 second - average-rate=(4+4+2+2+2+2+0+0+0+0+0+0+0+2+2+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
21,0 second - average-rate=(4+2+2+2+2+0+0+0+0+0+0+0+2+2+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
22,0 second - average-rate=(2+2+2+2+0+0+0+0+0+0+0+2+2+4+4+4)/16=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps
23,0 second - average-rate=(2+2+2+0+0+0+0+0+0+0+2+2+4+4+4+4)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
24,0 second - average-rate=(2+2+0+0+0+0+0+0+0+2+2+4+4+4+4+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
25,0 second - average-rate=(2+0+0+0+0+0+0+0+2+2+4+4+4+4+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
26,0 second - average-rate=(0+0+0+0+0+0+0+2+2+4+4+4+4+2+2+2)/16=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
27,0 second - average-rate=(0+0+0+0+0+0+2+2+4+4+4+4+2+2+2+2)/16=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
28,0 second - average-rate=(0+0+0+0+0+2+2+4+4+4+4+2+2+2+2+2)/16=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps
29,0 second - average-rate=(0+0+0+0+2+2+4+4+4+4+2+2+2+2+2+2)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
30,0 second - average-rate=(0+0+0+2+2+4+4+4+4+2+2+2+2+2+2+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps
31,0 second - average-rate=(0+0+2+2+4+4+4+4+2+2+2+2+2+2+0+0)/16=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps


Example Burst-time=8s

Burst time.8.part1.JPG Burst time.8.part2.JPG


Average rate is calculated every 1/16 of burst time, so in this case 0,5s

Zero second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0)/8=0Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
0,5 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+2)/8=250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
1,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+0+2+2)/8=500Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
1,5 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+0+2+2+2)/8=750Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
2,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+0+2+2+2+2)/8=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
2,5 second - average-rate=(0+0+0+0+0+0+0+0+0+0+0+2+2+2+2+2)/8=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
3,0 second - average-rate=(0+0+0+0+0+0+0+0+0+0+2+2+2+2+2+2)/8=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
3,5 second - average-rate=(0+0+0+0+0+0+0+0+0+2+2+2+2+2+2+1)/8=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
4,0 second - average-rate=(0+0+0+0+0+0+0+0+2+2+2+2+2+2+1+1)/8=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
4,5 second - average-rate=(0+0+0+0+0+0+0+2+2+2+2+2+2+1+1+1)/8=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
5,0 second - average-rate=(0+0+0+0+0+0+2+2+2+2+2+2+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
5,5 second - average-rate=(0+0+0+0+0+2+2+2+2+2+2+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
6,0 second - average-rate=(0+0+0+0+2+2+2+2+2+2+1+1+1+1+1+1)/8=2250Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
6,5 second - average-rate=(0+0+0+2+2+2+2+2+2+1+1+1+1+1+1+1)/8=2375Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
7,0 second - average-rate=(0+0+2+2+2+2+2+2+1+1+1+1+1+1+1+1)/8=2500Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
7,5 second - average-rate=(0+2+2+2+2+2+2+1+1+1+1+1+1+1+1+1)/8=2625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
8,0 second - average-rate=(2+2+2+2+2+2+1+1+1+1+1+1+1+1+1+1)/8=2750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
8,5 second - average-rate=(2+2+2+2+2+1+1+1+1+1+1+1+1+1+1+1)/8=2625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
9,0 second - average-rate=(2+2+2+2+1+1+1+1+1+1+1+1+1+1+1+1)/8=2500Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
9,5 second - average-rate=(2+2+2+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2375Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
10,0 second - average-rate=(2+2+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2250Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
10,5 second - average-rate=(2+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
11,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
11,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
12,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
12,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
13,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
13,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+0)/8=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
14,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+0+0)/8=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
14,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+0+0+0)/8=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
15,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+0+0+0+0)/8=1500Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
15,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+0+0+0+0+0)/8=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
16,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+0+0+0+0+0+0)/8=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
16,5 second - average-rate=(1+1+1+1+1+1+1+1+1+0+0+0+0+0+0+0)/8=1125Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
17,0 second - average-rate=(1+1+1+1+1+1+1+1+0+0+0+0+0+0+0+0)/8=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
17,5 second - average-rate=(1+1+1+1+1+1+1+0+0+0+0+0+0+0+0+1)/8=1000Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
18,0 second - average-rate=(1+1+1+1+1+1+0+0+0+0+0+0+0+0+1+2)/8=1125Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
18,5 second - average-rate=(1+1+1+1+1+0+0+0+0+0+0+0+0+1+2+2)/8=1250Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
19,0 second - average-rate=(1+1+1+1+0+0+0+0+0+0+0+0+1+2+2+2)/8=1375Kbps, average-rate < burst-threshold -> Burst is allowed -> Actual-rate=4Mbps (2Mb per 0,5sek)
19,5 second - average-rate=(1+1+1+0+0+0+0+0+0+0+0+1+2+2+2+2)/8=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
20,0 second - average-rate=(1+1+0+0+0+0+0+0+0+0+1+2+2+2+2+1)/8=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
20,5 second - average-rate=(1+0+0+0+0+0+0+0+0+1+2+2+2+2+1+1)/8=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
21,0 second - average-rate=(0+0+0+0+0+0+0+0+1+2+2+2+2+1+1+1)/8=1500Kbps, average-rate = burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
21,5 second - average-rate=(0+0+0+0+0+0+0+1+2+2+2+2+1+1+1+1)/8=1625Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
22,0 second - average-rate=(0+0+0+0+0+0+1+2+2+2+2+1+1+1+1+1)/8=1750Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
22,5 second - average-rate=(0+0+0+0+0+1+2+2+2+2+1+1+1+1+1+1)/8=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
23,0 second - average-rate=(0+0+0+0+1+2+2+2+2+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
23,5 second - average-rate=(0+0+0+1+2+2+2+2+1+1+1+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
24,0 second - average-rate=(0+0+1+2+2+2+2+1+1+1+1+1+1+1+1+1)/8=2250Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
24,5 second - average-rate=(0+1+2+2+2+2+1+1+1+1+1+1+1+1+1+1)/8=2375Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
25,0 second - average-rate=(1+2+2+2+2+1+1+1+1+1+1+1+1+1+1+1)/8=2500Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
25,5 second - average-rate=(2+2+2+2+1+1+1+1+1+1+1+1+1+1+1+1)/8=2500Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
26,0 second - average-rate=(2+2+2+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2375Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
26,5 second - average-rate=(2+2+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2250Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
27,0 second - average-rate=(2+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2125Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
27,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
28,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
28,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
29,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
29,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
30,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=2Mbps (1Mb per 0,5sek)
30,5 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/8=2000Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)
31,0 second - average-rate=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+0)/8=1875Kbps, average-rate > burst-threshold -> Burst not allowed -> Actual-rate=0Mbps (0Mb per 0,5sek)