Vmetro VBAT-PB, User Manual

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4 Operation
( I )
28 NXfer/s (_) 168 Mbyte/s
(_)
10 W e r / s (_) 8 8 Nbyge/s
(X) 5 W e r / s
(X) 4 8 Mbyte/s
(_)
2 11Xfer/s
(_) 1 6 Mbyte/s
(_) 1 !Offer/9
(_) 8 Mbyte/s
< O k > < C a n c e l >
Bus Transfer Rate Histogram
The Bus transfer rate statistics takes a series of samples with state
(synchronous) sampling and calculates the transfer rate in MTransfers/Sec and
Mbytes/Sec.
Note that the tracer does not collect samples in a period between each trace
when the collected data is being processed. You must select whether the
counters should accumulate the numbers, or reset the numbers for each trace.
You get this function by selecting S t a t i s t i c s from the main window, and
then select F u n c t i o n / B u s T r a n s f e r R a t e .
METRO U13T -325C
Session F u n c t i o n Options
UNE Bus S t a t i s t i c s
Ta r • e t U t i l i t i e s Q u i t H e l •
To t a l Number O f Samples 1 6 3 8 4
Bus L e v e l NXfor/sec
8.99
1 9 . 9 0
2 0 . 0 0
3 8 . 0 0
No Grant 0 . 7 2
To t a l 0 . 7 2
Bus L e v e l ( b y t e / s e c
8.88
0.80
0.00
8.88
No Grant 2 . 9 0
To t a l 2 . 9 0
Immidiate S t a r t
, k . <PF2:Window> <^(11:Nxt wnd>
Bus Tr a n s f e r Rate
8 . 8 8 . 1 8 . 2 0 . 3 0 . 4 8 . 5 0 . 6 8 . 7 0 . 8 8 . 9 1 . 6
I I I
5 6
Sampling
ITC°
State
Figure 37. Bus Transfer Rate histograms. The upper shows transfers per
second, and the lower bytes per second.
Change scale A very convenient function is
Options/Maximum S c a l e . With
this function you can change the scale
for the two histograms individually. On
the figure above is maximum scale for
transfers per second set to 1 MXFers/s,
and for bytes per second to 8 Mbytes/s.
Histo•ram Scale
76 V B T - 3 2 5 User's Manual V M E T R O