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详细说明：NULL 博文链接：https://asi12.iteye.com/blog/814440Copyright 2004 Sun Microsystems, InC, 4150 Network Circle, Santa Clara, California 95054, U.S.A. All rights reserved This product or docunent is protected by copyright and distributed under licenses restricting its use, copying, distribution, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors if ar Third-party software, including font technology, is copyrighted and licensed from Sun suppliers Sun, Sun Microsystems, the Sun logo, Solaris, and Open Boot are trademarks or registered trademarks of Sun Microsystems, Inc, in the U. S and other countries All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc in the u. s and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd Federal Acquisitions: Commercial Software -Government Users Subject to Standard License Terms and Conditions Export Laws. Products, Services, and technical data delivered by Sun may be subject to U.S. export controls or the trade laws of other countries. You will comply with all such laws and obtain all licenses to export, re-export, or import as may be required after delivery to You. You will not export or re-export to entities on the most current U.S. export exclusions lists or to any country subject to U. S embargo or terrorist controls as specified in the U.S. export laws. You will not use or provide Products, Services, or technical data for nuclear, missile or chemical biological weaponry end uses DOCUMENTATION IS PROVIDEDAS IS" AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS, AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID THIS MANUAL IS DESIGNED TO SUPPORT AN INSTRUCTOR-LED TRAINING (ILT) COURSE AND IS INTENDED TO BE USED FOR REFERENCE PURPOSES IN CONJUNCTION WITH THE ILT COURSE. THE MANUAL IS NOT A STANDALONE TRAINING TOOL, USE OF THE MANUAL FOR SELF-STUDY WITHOUT CLASS ATTENDANCE IS NOT RECOMMENDED Export Control Classification Number EAR99 assigned 10 September 2004 Please Adobe posts Recycle Copyright 2004 Sun Microsystems Inc. 4150 Network Circle, Santa Clara, California 95054, Etats-Unis. Tous droits reserves Ce produit ou document est protege par un copyright et distribu avec des licences qui en restreignent lutilisation, la copie, la distribution, et la decompilation. Aucune partie de ce produit ou document ne peut etre reproduite sous aucune forme, par quelque moyen que ce soit, sans l'autorisation prealable et ecrite de sun et de ses bailleurs de licence s'il y en a Le logiciel detenu par des tiers, et qui comprend la technologie relative aux polices de caracteres, est protege par un copyright et licencie par des fournisseurs de Sun Sun, Sun microsystems, le logo Sun, Solaris, et Open boot sont des marques de fabrique ou des marques deposes de sun microsystems, Inc, aux Etats-Unis et dans d'autres pay Toutes les marques SPARC sont utilisees sous licence sont des marques de fabrique ou des marques deposes de sPArC International, Inc aux Etats-Unis et dans d'autres pays. Les produits portant les marques SP ARC sont bases sur une architecture developpee par Sun Microsystems, Inc UNIX est une marques depose aux Etats-Unis et dans d'autres pays et licencee exclusivement par X/Open Company, Ltd Legislation en matiere exportations. Les Produits, Services et donnees techniques livres par Sun peuvent etre soumis aux controles americains sur les exportations, ou a la legislation commerciale dautres pays. Nous nous conformerons a lensemble de ces textes et nous obtiendrons toutes licences exportation, de re-exportation ou dimportation susceptibles detre requises apres livraison a Vous. Vous nexporterez, ni ne re-exporterez en aucun cas a des entites figurant sur les listes americaines interdiction deportation les plus courantes, ni vers un quelconque pays soumis a embargo par les Etats-Unis, Ou a des controles anti-terroristes, comme prevu par la legislation americaine en matiere dexportations. Vous nutiliserez, nine fournirez les Produits, Services ou donnees techniques pour aucune utilisation finale liee aux armes nucleaires, chimiques ou biologiques ou aux missiles LA DOCUMENTATION EST FOURNIE EN L ETAT ET TOUTES AUTRES CONDITIONS, DECLARATIONS ET GARANTIES EXPRESSES OU TACITES SONT FORMELLEMENT EXCLUES, DANS LA MESURE AUTORISEE PAR LA LOI APPLICABLE, Y COMPRIS NOTAMMENT TOUTE GARANTIE IMPLICITE RELATIVE A LA QUALITE MARCHANDE, A L'APTITUDEA UNE UTILISATION PARTICULIERE OU A L'ABSENCE DE CONTREFACON CE MANUEL DE REFERENCE DOIT ETRE UTILISE DANS LE CADRE D'UN COURS DE FORMATION DIRIGE PAR UN INSTRUCTEUR (ILT). IL NE S'AGIT PAS D'UN OUTIL DE FORMATION INDEPENDANT. NOUS VOUS DECONSEILLONS DE L'UTILISER DANS LE CADRE D'UNE AUTO-FORMATION Adobe postscript Recycle Table of contents About this course n日日m日■日■日日■■鑫 Preface-xi Course goals Preface-xi Topics Not Covered Preface-xiii How Prepared are you?..................Preface-xiv Introductions......................... Preface-xV How to use Course materials Preface-xvi Conventions… Preface-xV Typographical Conventions………. reface-xviii DTrace Fundamentals 1-1 Objectives...1-1 Relevance ·非·。鲁,。鲁·。音中鲁非。鲁·。普··看普 1-2 Additional resources 1-3 DTrace Features. ................................................................................1-4 Transient Failures................1-4 Debugging transient Failures DTrace Capabilities...........1-6 DTrace Architecture …1-7 Probes and probe providers .......1-7 DTrace Components 鲁非看·音。音,·自。普非 ·····.·············:· 1-8 DTrace Tour∴ ·4非鲁。普非自。非 1-11 Listing probes 1-11 Writing d scripts.…… 1-20 Using DTrace .2-1 Objectives……… ···:··············· Relevance 2-2 Additional resources 2-3 DTrace Performance Monitoring Capabilities.......2-4 Features of the DTrace Performance monitoring Capabilities 2-4 Aggregations.……..….…...2-4 Examining Performance Problems Using the vminfo Provider 2-8 Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. Sun Services, Revision A The vminfo probes……2-9 Finding the Source of Page Faults Using vminfo P robes 音自申。自鲁非·l·自。鲁音··。自。看·鲁非 2-11 Examining performance Problems Using the sysinfo Provider 2-17 The sysinfo probes ........................2-18 USing the quantize Aggregation Function With the sysinfo probes ·“·····“·· .2-21 Finding Cross-Calls…………….2-22 Examining performance Problems using the io Provider 2-26 The io probes…......….........-26 Information available when io probes fire. ....................2-27 Finding I/ O Problems… 2-32 Obtaining System Call Information…………………2-36 The sysco1 1 Provider… 。鲁。·“自。鲁·。着·B非。鲁番。B·鲁。鲁,自非非。·。鲁鲁 2-36 D Language variables……………,,,,,.,,.,..,2-43 Associative arrays....... 2-44 Thread- Local variables∴….......2-45 Timing a system call 2-46 Following a System Call 2-48 Creating D Scripts That Use Arguments 2-53 Built- in macroⅤ ariables∴2-54 PID Argument Example 2-55 Executable Name Argument Example………2.56 Custom Monitoring tools………………….259 Debugging Applications With dTrace. 1■■■■■■■■■■■日■自日■■■ 3-1 Objectives… 3-1 Relevance 3-2 Additional resources ·.···:·..···:·········· 鲁鲁非 3-3 Application Profiling ............................3-41 The pid Provider...... ··;·“ The profile provider...........3-20 Application variables ·非非 ………….3-29 Displaying process global variables..........3-29 Displaying library global variables……………334 Transient System Call errors 3-37 User Stack Traces on System Call Failures………………3-38 Processes using a lot of system Time 3-40 Open Files 3-44 Accessing System Call Pointer Arguments…… 3-44 Displaying names of files being opened.........3-47 ynamic Performance Tuning and Troubleshooting With dTrace Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. Sun Services, Revision A Finding System Problems With DTrace 41 Objectives.... 4-1 Relevance............ 4-2 Additional resources∴….......... 4-3 Accessing Kernel variables .4-4 USing the d language to Access Kernel Symbols………-4 Monitoring Kernel variables…………-5 Accessing Kernel Data Structures 4-6 Accessing lock Contention Information……4-12 Displaying Read Call Information……………………………4-18 Tracing read Calls System-Wide........4-18 Tracing Read Calls Using the iosnoop d D Script..4-21 Aggregating Read Data…………………………………4-21 Using the Anonymous Tracing Facility 4-24 Creating an Anonymous Enabling……………4-24 Performing Anonymous Tracing……… 4-25 Using the Speculative Tracing Facility……4-28 Speculative Tracing Functions 4-29 Speculative Tracing Example 4-30 Application Debugging With Speculative Tracing....4-32 DTrace privileges 4-36 USing the Least privilege Facility…………4-36 Kernel- DestructiⅤ e actions∴......4-37 Setting dtrace User privileges 4-37 Setting dtrace Process Privileges……………4. Summarizing the dtrace Privilege levels……….4-45 Troubleshooting DTrace Problems.……,…,…,,…,…,……51 Objectives Relevance Additional resources 鲁··音···。··。非D音·,。自非。非申自非非非。·非自·非 ··.4·:·· Minimizing dtrace performance Impact…………………….15-4 Limiting Enabled Probes…… 5-4 USing Aggregations…….….….….….…….….155 Using Cacheable Predicates……………… Using and Tuning dTrace Buf 5-8 Principal buffers 5-8 Principal buffer policies .:·····:··· 曹专鲁 DTrace Option settings The switch Buffer policy 5-10 The fi11 Buffer policy…………… 5-12 The ring Buffer policy 5-13 Other buffers 5-14 Buffer Resizing policy…… 5-14 Debugging DTrace Scripts……… 5-15 avoiding Syntax errors in D Scripts 5-15 Avoiding run- -Time Errors in D Scripts………………5-17 Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. Sun Services, Revision A Actions and Default action A-2 Data Recording Actions……………A-3 The void trace( expression) Action……………2-3 The void tracemem(address, size t nbytes) Action. . A-3 The void printf(string format, .. )Action...A-3 The printa actior A-10 The stack( Action… A-12 The ustackO Action A-13 Destructive actions A-16 Process Destructive actions 非鲁音非音看·普··。D鲁音鲁,非非非着音,非。音。鲁 A-16 Kernel destructive Actions.................A-17 pecial Actions A-20 Actions associated With Speculative tracing The void exit( int status) Action…….∴…A4-20 -21 Subroutines A-21 The void *alloca(size t size)Subroutine....A-21 The string basename(char *str) Subroutine....A-22 The void bcopy(void *src, void *dest, size t size)Subroutine .A-22 The string clearpath(char *str) Subroutine...A-22 The void copyin(uintptr t addr, size t size) S subroutine A-23 The string copyinstr(uintptr t addr) Subroutine A-23 The string dirname(char *str) Subroutine ....A-24 The size t msgdsize(mblk t *mp)Subroutine ...A-24 The size t msgsize (mblk t *mp) Subroutine A-24 The int mutex owned(mutex t *mutex Subroutine A-24 The kthread t *mutex owner(kmutex t *mutex Subroutine A-24 The int mutex type adaptive(kmutex t *mutex) Subroutine A-25 The int progenyof( pid t pid) Subroutine……………A-25 The int rand(void) Subroutine.... A-25 The int rw iswriter(krwlock t *relock) Subroutine The int rw write held(krwlock t *rwlock/ A-25 Subroutine 。非·非非 A-26 The int speculation(void)Subroutine .A-26 The string strjoin (char *strl, char xstr2) Subroutine A-26 The size t strlen (string str) Subroutine ....A-26 Dynamic Performance Tuning and Troubleshooting With dTrace Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. Sun Services, Revision A D Built-in and macro variables ■ B-1 Built-in variables B-2 MacroⅤ ariables B-4 D Operators.,,.,,,…,…,…,…,…,…,…,…C-1 Arithmetic Operators C-2 Relational Operators logical Operators C-4 Bitwise operate P ors C-5 Assignment Operators...... C-6 Increment and Decrement Operators C-8 Conditional expressio C-9 X Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. Sun Services, Revision A

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