Segment Capture Options
Chapter 4, Xgig TraceControl Capture Configuration
Xgig Analyzer User’s Guide
141
Debugging an Intermittent Loss of Sync
As another example, it may be difficult to track down the cause of a SAS/SATA device losing sync
(LOS error), especially if such a problem happens infrequently for unexplained reasons. You
would likely walk in after a few hours, see that the LOS error had occurred, and the entire trace
buffer would be filled with errors. Your first action would probably be to set a trigger for coding
and disparity errors to see all the events that led us to the LOS; however, there are also several
conditions where a coding/disparity error might cause a LOS, yet these events would not be
relevant to your analysis. These errors might happen at rare instances for a variety of reasons, and
the system can recover from them by retransmitting the frame – these are not the LOS error you
are looking for. You might spend hours taking a trace, only to see later that the error captured has
nothing to do with the LOS issue you are trying to correct.
One way to work towards finding the LOS issue would be to segment the buffer. Now you can
automatically take several traces over a prolonged period of time for coding/disparity errors. If one
of the traces does not demonstrate the LOS condition you are looking for, the next trace on a
separate segment might.
Issues that Have Several Symptoms or Several Possible Diagnoses
Sometimes a particular issue seems to have several symptoms, or you might have several
hypotheses on its cause based on the result of several unique occurrences. If the error happens
infrequently, you can take several traces automatically and see if the events leading up to the error
are the same for each instance of the error.
Compare and Contrast Like Events
For example, you may have a problem where a reset event happens at unexpected times. You could
segment the buffer to take multiple traces, and capture instances of both scheduled and
unscheduled resets. You could then easily compare the different resets within the TraceView
decode display.
Содержание Xgig
Страница 1: ...Xgig Analyzer Version 7 3 User s Guide ...
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Страница 3: ...Viavi Solutions 1 844 GO VIAVI www viavisolutions com Xgig Analyzer Version 7 3 User s Guide ...
Страница 6: ...Xgig Analyzer User s Guide Page iv Version 7 3 December 2015 ...
Страница 7: ...v CONTENTS ...
Страница 15: ...1 PART ONE Using Xgig Analyzer ...
Страница 16: ...PART ONE Using Xgig Analyzer 2 Xgig Analyzer User s Guide ...
Страница 27: ...13 PART TWO Using Xgig TraceControl ...
Страница 28: ...PART TWO Using Xgig TraceControl 14 Xgig Analyzer User s Guide ...
Страница 29: ...15 Chapter 2 About Xgig TraceControl In this chapter Introduction to TraceControl ...
Страница 156: ...Chapter 4 Xgig TraceControl Capture Configuration Segment Capture Options 142 Xgig Analyzer User s Guide ...
Страница 157: ...143 Chapter 5 Template Browser Template Editor In this chapter Template Browser Template Editor ...
Страница 173: ...159 Chapter 6 Xgig TraceControl Hints and Tips In this chapter TraceControl Hints and Tips Keyboard Shortcuts ...
Страница 176: ...Chapter 6 Xgig TraceControl Hints and Tips Keyboard Shortcuts 162 Xgig Analyzer User s Guide ...
Страница 177: ...163 PART THREE Using Xgig Performance Monitor ...
Страница 178: ...PART THREE Using Xgig Performance Monitor 164 Xgig Analyzer User s Guide ...
Страница 179: ...165 Chapter 7 About Xgig Performance Monitor In this chapter Introducing Xgig Performance Monitor ...
Страница 181: ...167 Chapter 8 Getting Started with Xgig Performance Monitor In this chapter Launching Xgig Performance Monitor ...
Страница 192: ...Chapter 9 Xgig Performance Monitor Port Configuration Changing Port Functions 178 Xgig Analyzer User s Guide ...
Страница 223: ...209 PART FOUR Using Xgig TraceView ...
Страница 224: ...PART FOUR Using Xgig TraceView 210 Xgig Analyzer User s Guide ...
Страница 225: ...211 Chapter 11 About Xgig TraceView In this chapter Introducing Xgig TraceView ...
Страница 227: ...213 Chapter 12 Getting Started with Xgig TraceView In this chapter Launching Xgig TraceView Working With Domains ...
Страница 379: ...365 Chapter 15 Xgig TraceView Histograms In this chapter Histogram Overview Histogram Controls ...
Страница 382: ...Chapter 15 Xgig TraceView Histograms Histogram Controls 368 Xgig Analyzer User s Guide ...
Страница 383: ...369 Chapter 16 Xgig TraceView Template Editor In this chapter Using Template Editor ...
Страница 394: ...Chapter 16 Xgig TraceView Template Editor Using Template Editor 380 Xgig Analyzer User s Guide ...
Страница 414: ...Chapter 18 Converting Files from Other Platforms Converting I Tech Files 400 Xgig Analyzer User s Guide ...
Страница 429: ...415 Chapter 20 Xgig Trace View Hints and Tips In this chapter Trace View Hints and Tips Toolbar Keyboard Shortcuts ...
Страница 437: ...423 PART FIVE Using Xgig Expert ...
Страница 438: ...PART FIVE Using Xgig Expert 424 Xgig Analyzer User s Guide ...
Страница 439: ...425 Chapter 21 Xgig Expert In this chapter Key Features of Xgig Expert Opening a Trace Switching to TraceView ...
Страница 442: ...Chapter 21 Xgig Expert 428 Xgig Analyzer User s Guide Figure 194 Xgig Expert Graph View ...
Страница 443: ...429 PART SIX Appendices ...
Страница 444: ...PART SIX Appendices 430 Xgig Analyzer User s Guide ...
Страница 454: ...Appendix C Protocol Display Color Coding 440 Xgig Analyzer User s Guide ...
Страница 461: ...447 INDEX ...
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