Network Instruments GigaStor User Manual page 56

Maximum number of intervals
Number of duration intervals with microbursts: The Detail Chart shows the count of microbursts that
occurred in each duration interval. There can only be one microburst per duration interval This number is
also used to calculate the percent of duration intervals with microbursts.
Table 5 (page 56) shows how changing one variable changes the calculations and can affect what you
see in your charts.
Table 5: Changing interval, duration, or MB Utilization
Interval
5
ms
Bits/sec in Interval 2,500,000100,000,000 5,000,000 5,000,0005,000,000 5,000,000 5,000,0005,000,0005,000,000
Bytes/sec in 309,672 12,338,304 61,688,484 617,826 617,826
Interval
Bytes/sec in 319,500 12,500,000 625,000,000 625,000 625,000
Interval with IFG
Megabytes/sec 0.298
# of packets/ 204
Interval
Max # of 5
microbursts in
Interval
Max bits of 500,000 500,000
duration from
Utilization
Threshold
# of bits per 250,000 250,000
Duration for
microburst
# of packets in 20.319 20.319
Duration
1)
Frame size is 1514, Frame bits are 12,304, Capture adapter speed is 1 Gb, and Network utilization is 50%.
2)
Duration is 1 millisecond.
3)
Microburst Utilization threshold is 50%.
4)
Interval is 10 milliseconds.
5)
Microburst Utilization.
56 | GigaStor™ (pub. 25.Apr.2014)
Interval Interval
200 1,2,3
1 s
1 , 2 , 3 1,2,3
ms
11.921 59.605
8,128 40,638
200 1,000
500,000
250,000
20.319
Duration Duration Duration
1 100 10
1,3, 4 1,3,4 1,3,4
ms µs µs
617,826 617,826 617,826 617,826
625,000 625,000 625,000 625,000
0.596 0.596 0.596
407 407 407
10 100 1,000
500,000 50,000 5,000
250,000 25,000 2,500
20.319 2.032 0.203
MB MB MB
Util Util Util
1,2,4, 5 1,2,4 1,2,4
10% 50% 90%
0.596 0.596 0.596
407 407 407
10 10 10
500,000 500,000 500,000
50,000 250,000 450,000
4.064 20.319 36.573