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Solaris Dynamic Tracing Guide
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Document Information

Preface

1.  Introduction

2.  Types, Operators, and Expressions

3.  Variables

4.  D Program Structure

5.  Pointers and Arrays

6.  Strings

7.  Structs and Unions

8.  Type and Constant Definitions

9.  Aggregations

10.  Actions and Subroutines

11.  Buffers and Buffering

Principal Buffers

Principal Buffer Policies

switch Policy

fill Policy

fill Policy and END Probes

ring Policy

Other Buffers

Buffer Sizes

Buffer Resizing Policy

12.  Output Formatting

13.  Speculative Tracing

14.  dtrace(1M) Utility

15.  Scripting

16.  Options and Tunables

17.  dtrace Provider

18.  lockstat Provider

19.  profile Provider

20.  fbt Provider

21.  syscall Provider

22.  sdt Provider

23.  sysinfo Provider

24.  vminfo Provider

25.  proc Provider

26.  sched Provider

27.  io Provider

28.  mib Provider

29.  fpuinfo Provider

30.  pid Provider

31.  plockstat Provider

32.  fasttrap Provider

33.  User Process Tracing

34.  Statically Defined Tracing for User Applications

35.  Security

36.  Anonymous Tracing

37.  Postmortem Tracing

38.  Performance Considerations

39.  Stability

40.  Translators

41.  Versioning

Glossary

Index

Principal Buffers

The principal buffer is present in every DTrace invocation and is the buffer to which tracing actions record their data by default. These actions include:

exit()
printf()
trace()
ustack()
printa()
stack()
tracemem()

The principal buffers are always allocated on a per-CPU basis. This policy is not tunable, but tracing and buffer allocation can be restricted to a single CPU by using the cpu option.

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