2025. 01. 10 Friday 어제 Geek News에서 재미있어 보이는 프로젝트를 찾게 되었다.!     👩‍💻제대로 된 코딩을 한 게 . . 지난 겨울 방학때 한창 앱 개발하던 그 시절이 마지막인 것 같거등요 ^^.. ...💥무언가 만들고 싶은게 있어서,파바박 밤새 개발하던 때가 그립기도 하고,, 요즘은 하고 싶은 일보다 해야하는 일을 더 많이 하게 되는 것 같네요 ..   .·⋆(⌒_⌒)⋆·.          https://operating-system-in-1000-lines.vercel.app/en/ Intro | OS in 1,000 Lines operating-system-in-1000-lines.vercel.app세상에는 대단한 개발자가 너무너무많으셔 -              ..

2024. 10. 22 TuesdayVisualizatinon - Text memory + CPU Cycle    # Summary 정적으로 컴파일 된 코드 -> objdump로 확인 동적으로 연결 -> 코드 상에서 프린트 찍어서 확인 동적이냐 정적이냐 구분해서 분석하는 것 중요DLL이랑은 다른 내용 Rust 코드에서 print 구문으로 text 주소 확인하기 16진수 메모리 -> 100 단위도 매우 큰 scale csv 파일 -> Python으로 시각화 at Web - Plotly    https://plotly.com/python/ PlotlyPlotly'splotly.com  https://github.com/plotly/plotly.py GitHub - plotly/plotly.py: The in..

https://stackoverflow.com/questions/32026456/how-can-i-specify-an-area-of-code-to-instrument-it-by-pintool How can i specify an area of code to instrument it by pintool?There are four levels of granularity in Pin: routine, instruction and image, trace. Can i specify an limits/area to start and stop inserting instrumentation code. may by like directive like ( # startstackoverflow.com      # 자주 썼던..

4.3 Context SwitchingThe kernel switches among threads in an effort to share the CPU effectively; this activity is called context switching. When a thread executes for the duration of its time slice or when it blocks because it requires a resource that is currently unavailable, the kernel finds another thread to run and context switches to it. The system can also interrupt the currently executin..

The Process StructureIn addition to the references to the substructures, the process entry shown in Figure 4.1 contains the following categories of information: • Process identification: the PID and the parent PID • Signal state: signals pending delivery and summary of signal actions• Tracing: process tracing information• Timers: real-time timer and CPU-utilization counters  The process substruc..

4.2 Process StateEvery process in the system is assigned a unique identifier termed the process identifier (PID). PIDs are the common mechanism used by applications and by the kernel to reference processes. PIDs are used by applications when the latter send a signal to a process and when receiving the exit status from a deceased process. Two PIDs are of special importance to each process: the PI..

Part II: ProcessesChapter 4.1 Introduction to Process ManagementA process is a program in execution. (프로세스의 정의. 정확하게 따지자면, 프로그램과는 구분된다.)A process has an address space containing a mapping of its program’s object code and global variables. It also has a set of kernel resources that it can name and on which it can operate using system calls. These resources include its credentials, signal state, a..

3.8 Kernel Tracing FacilitiesOperating-system kernels are large and complex pieces of software, encompassing thousands of lines of mainly C code, organized into dozens of subsystems and including hundreds of device drivers. Understanding what is happening within the operating system while it is running is important not only to developers of the code but also to the much larger group of people wh..

PrIM BenchmarksVertor Addition Code Reivew https://github.com/SohyeonKim-dev/prim-benchmarks GitHub - SohyeonKim-dev/prim-benchmarks: PrIM (Processing-In-Memory benchmarks) is the first benchmark suite for a real-world prPrIM (Processing-In-Memory benchmarks) is the first benchmark suite for a real-world processing-in-memory (PIM) architecture. PrIM is developed to evaluate, analyze, and charact..

3.7 Resource ServicesAll systems have limits imposed by their hardware architecture and configuration to ensure reasonable operation and to keep users from accidentally (or maliciously) creating resource shortages. (오오.. 모든 시스템은 한계를 가진다 by 안정성)At a minimum, the hardware limits must be imposed on processes that run on the system. It is usually desirable to limit processes further, below these har..