Hardware Breakpoint implementation in BCC## Hardware Breakpoint implementation in BCC eBPF Summit Manali ShuklaAanandita Dhawan Maneesh Soni Hardware breakpoint Memory watchpoint Used in debuggers Elegant mechanism to monitor memory access Perf hardware breakpoint implementation: mem:[:access] [Hardware breakpoint] Example: d2f9f030da83286feb37933dcafd1/p3_1.jpg) ## 02 ## I mplementation libbpf.c void bpf_attach_ breakpoint(uint64_t symbol_addr, int pid, int progfd, int bp_type) { struct perf_event_attr attr = {}; 0 码力 | 8 页 | 2.02 MB | 1 年前3
Performance Engineering: Being Friendly to Your HardwarePerformance Engineering Being Friendly to Your Hardware ## I GNAS BAGDONAS ## Being Friendly to Your Hardware Performance Engineering A gentle introduction to hardware for software engineers Where does C++ run vectors, specialty instructions, on-core and off-core accelerators • Data layout: both software and hardware characteristics 0 码力 | 111 页 | 2.23 MB | 1 年前3
Linux Lab v1.2 ManualOrigins 11 1.5.2 Problems Solved 11 1.5.3 Project Born 11 2. Linux Lab Installation 12 2.1 Hardware and Software Requirement 13 2.2 Docker Installation 14 2.3 Choose a working directory 15 2 org/linux-lab-disk – Introduce and demonstrate the features, functions and usage of Linux Lab Disk ### 2.1 Hardware and Software Requirement Linux Lab is a full embedded Linux development system, it needs enough memory storage space, to avoid potential extension issues, here is the recommended configuration: |Hardware|Requirement|Description| |---|---|---| |Processor|X86\_64, > 1.5GHz|Must choose 64-bit X86 while0 码力 | 67 页 | 1.13 MB | 2 年前3
Oracle VM VirtualBox 6.1.20 User ManualUnattended Guest Installation 52 3.2.1 An Example of Unattended Guest Installation 52 3.3 Emulated Hardware 54 3.4 General Settings 54 3.4.1 Basic Tab 54 3.4.2 Advanced Tab 55 3.4.3 Description Tab 4.4.2 Known Limitations ..... 83 4.5 Hardware-Accelerated Graphics ..... 83 4.5.1 Hardware 3D Acceleration (OpenGL and Direct3D 8/9) ..... 83 4.5.2 Hardware 2D Video Acceleration for Windows Guests Mounting a Virtual Disk Image ..... 106 6 Virtual Networking ..... 108 6.1 Virtual Networking Hardware ..... 108 6.2 Introduction to Networking Modes ..... 109 6.3 Network Address Translation (NAT)0 码力 | 401 页 | 4.74 MB | 2 年前3
Branchless Programming in C++programmer's guide to efficient hardware utilization and compiler optimizations using C++ examples Fedor G. Pikus ## PLAN • Efficiency and performance • Understanding the hardware and using it efficiently efficiently – Computing resources of a CPU - Pipelining Branch prediction and hardware loop unrolling • Conditional code vs efficiency • Optimizing conditional code • Branchless programming  ## USE ALL OF THE CPU HARDWARE ALL THE TIME ## • What determines performance? • Optimal algorithm: – get the result with minimal0 码力 | 61 页 | 9.08 MB | 1 年前3
C++ in the Developing World, Why it Mattersthe journey. - I am passionate about energy efficient computing and making the most out of older hardware, researching different platforms, tools and how to bridge different worlds and peoples together talk is an exploration of the importance of C++ as a language for writing efficient code for older hardware which is easier to access in the developing world. - It will also look into the C++ language as everyone from a “Poor” country is “Poor” and everyone from a “Rich” Country is “Rich” ## Older Hardware • As TIME has progressed, Technology has improved to make SMALLER electrical components. • Meaning0 码力 | 8 页 | 177.52 KB | 1 年前3
User’s Guide for Free Pascal, Version 3.2.2information 9 2 Installing the compiler 10 2.1 Before Installation: Requirements 10 2.1.1 Hardware requirements 10 2.1.2 Software requirements 10 Under DOS 10 Under UNIX 10 Under Windows # Chapter 2 # Installing the compiler ### 2.1 Before Installation : Requirements #### 2.1.1 Hardware requirements The compiler needs at least one of the following processors: 1. An Intel 80386 or of watches in a separate window. Breakpoint (CTRL-F8) Sets a breakpoint at the current line. When debugging, program execution will stop at this breakpoint. Breakpoint list Shows the current list of breakpoints0 码力 | 217 页 | 756.57 KB | 2 年前3
Python 标准库参考指南 2.7.18 write JPEG files 1412 40 SunOS Specific Services 1413 40.1 sunaudiodev — Access to Sun audio hardware 1413 40.2 SUNAUDIODEV — Constants used with sunaudiodev 1415 41 未创建文档的模块 1417 41.1 Miscellaneous of the character ch. window.idcok(flag) If flag is False, curses no longer considers using the hardware insert/delete character feature of the terminal; if flag is True, use of character insertion and is enabled by default. window.idlok(yes) If called with yes equal to 1, curses will try and use hardware line editing facilities. Otherwise, line insertion/deletion are disabled. window.immedok(flag)0 码力 | 1552 页 | 7.42 MB | 1 年前3
Python 标准库参考指南 2.7.18 write JPEG files 1412 40 SunOS Specific Services 1413 40.1 sunaudiodev — Access to Sun audio hardware 1413 40.2 SUNAUDIODEV — Constants used with sunaudiodev 1415 41 未创建文档的模块 1417 41.1 Miscellaneous of the character ch. window.idcok(flag) If flag is False, curses no longer considers using the hardware insert/delete character feature of the terminal; if flag is True, use of character insertion and is enabled by default. window.idlok(yes) If called with yes equal to 1, curses will try and use hardware line editing facilities. Otherwise, line insertion/deletion are disabled. window.immedok(flag)0 码力 | 1552 页 | 7.42 MB | 1 年前3
Python 标准库参考指南 2.7.18 write JPEG files 1412 40 SunOS Specific Services 1413 40.1 sunaudiodev — Access to Sun audio hardware 1413 40.2 SUNAUDIODEV — Constants used with sunaudiodev 1415 41 未创建文档的模块 1417 41.1 Miscellaneous of the character ch. window.idcok(flag) If flag is False, curses no longer considers using the hardware insert/delete character feature of the terminal; if flag is True, use of character insertion and is enabled by default. window.idlok(yes) If called with yes equal to 1, curses will try and use hardware line editing facilities. Otherwise, line insertion/deletion are disabled. window.immedok(flag)0 码力 | 1552 页 | 7.42 MB | 1 年前3
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