GitHub - cyring/CoreFreq: CoreFreq : CPU monitoring and tuning software designed for 64-bit processors.
CoreFreq, a CPU monitoring software with BIOS like functionalities, is designed for the 64-bits Processors of architecture Intel Atom, Core2, Nehalem, SandyBridge and superiors; AMD Families from 0Fh ... up to 17h (Zen , Zen+ , Zen 2), 18h (Hygon Dhyana), 19h (Zen 3, Zen 3+, Zen 4, Zen 4c); Arm A64 CoreFreq provides a framework to retrieve CPU data with a high degree of precision: Core frequencies
CPI Flame Graphs: Catching Your CPUs Napping
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5. All programmer should know • L1 ã‚ャッシュå‚ç…§......................... 0.5 ns • 分å²äºˆæ¸¬ãƒŸã‚¹............................ 5 ns • L2 ã‚ャッシュå‚ç…§........................... 7 ns • Mutex lock/unlock ........................... 25 ns • Main memory å‚ç…§...................... 100 ns 7. ã‚ャッシュコヒーレント？ • 複数ã®CPUコアã‹ã‚‰è¦‹ãˆã‚‹ãƒ¡ãƒ¢ãƒªã¯åŒä¸€ã§ãª ã„ã¨å›°ã‚‹ • ã¤ã¾ã‚Šè¤‡æ•°ã®CPUコアã®ã‚ャッシュã¯å¸¸ã«æœ€ æ–°ã®æƒ…å ±ã‚’ä¿æŒã—ã¦ãªã„ã¨å›°ã‚‹ • ã ãŒå¸¸ã«æœ€æ–°ã®æƒ…å ±ã‚’å…¨éƒ¨ã®ã‚ャッシュã«å…¨ ã¦æ›¸ã続ã‘ã‚‹ã®ã¯é€Ÿåº¦ãŒå‡ºãªã„ã®ã§ã€ã¾ã‚‹ã§ 本当ã«å…¨éƒ¨ã®ã‚ャッシ
Intelã€æœ€å¤§18コアã®"Haswell-EP"ã“ã¨ã€ŒXeon E5-2600 v3ã€ãƒ•ã‚¡ãƒŸãƒªã‚’発表
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ã€é€£è¼‰ç§»ç±ã®ãŠçŸ¥ã‚‰ã›ã€‘ DOS/V POWER REPORTã¯2024年冬å·ã‚’ã‚‚ã£ã¦ä¼‘刊ã—ã¾ã—ãŸã€‚以下ã®é€£è¼‰ã¯æŽ²è¼‰ã®å ´ã‚’AKIBA PC Hotline!（https://akiba-pc.watch.impress.co.jp/）ã«ç§»ã—ã¦ç¶™ç¶šä¸ã§ã™ã€‚よりã„ã£ãã†ãƒ‘ワーアップã—ãŸå†…容ã«ã‚‚ã”期待ãã ã•ã„。 ＜新装連載ä¸ï¼(2024å¹´7月ç¾åœ¨)＞ GPU Round-Robin Benchmark https://akiba-pc.watch.impress.co.jp/backno/special/gpu_benchmark/ VIDEO CARD LABORATORY https://akiba-pc.watch.impress.co.jp/backno/special/videocard_lab/ 最新自作計画（※竹内亮介ã®ã‚ªãƒ¬ã«PCケースを使ã‚ã›ã‚ï¼ã¨åˆä½µï¼‰ https://akiba
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下記ã®è¡¨ã¯ gzip ã®æ¨™æº–状態を 1 ã¨ã—ãŸç›¸å¯¾çš„ãªæ•°å€¤ã‚’示ã—ã¦ã„ã¾ã™ã€‚ Software 欄㮠-1 ã‚„ -9 ã¯ã€ã‚³ãƒžãƒ³ãƒ‰ã«æŒ‡å®šã§ãる圧縮率ã§ã™ã€‚ -1 ãŒæœ€ä½Žã€ -9 ãŒæœ€é«˜ã«ãªã£ã¦ã„るコマンドãŒå¤šã„ã§ã™ã€‚ 並列ã«å®Ÿè¡Œã§ãã‚‹ã‚‚ã®ã«é–¢ã—ã¦ã¯ã™ã¹ã¦ 8 スレッドã§å®Ÿè¡Œã—ã¦ã„ã¾ã™ã€‚ ベンãƒãƒžãƒ¼ã‚¯çµæžœ time real 実際ã®çµŒéŽæ™‚é–“ time user CPU user 時間 compression ratio 圧縮率ã®æ¯”。大ãã„ã»ã©ãƒ•ã‚¡ã‚¤ãƒ«ãŒå¤§ãã„。 compression ratio (single/parallel) 並列版ã«ã¤ã„ã¦ã€ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã«å¯¾ã™ã‚‹åœ§ç¸®çŽ‡ã®æ¯” parallel overhead シングルスレッド版ã¨æ¯”較ã—㟠CPU user時間ã®æ¯”
The Calibrator (v0.9e), a Cache-Memory and TLB Calibration Tool
The Calibrator (v0.9e), a Cache-Memory and TLB Calibration Tool Introduction The Source Code and how to compile it Binary Executables How to use The Calibrator Sample Output The Calibrated Hardware Database Request for Contributions and Feedback 1. Introduction The Calibrator is a small C program that is supposed to analyze a computers (cache-) memory system and extract the following parameters: n
E5-2600 ã®â€œç¾Žå‘³ã—ã„â€ãƒ¡ãƒ¢ãƒªãƒ¼æ§‹æˆ - Cisco Learning Network Mobile
インテル® Xeon® プãƒã‚»ãƒƒã‚µãƒ¼ E5-2600 ã‚’æ載ã—ãŸCisco UCS B200 M3 ã‚„ C220 M3ã€C240 M3ã€ã¾ãŸã¾ãŸã‚·ã‚¹ã‚³ã«é™ã‚‰ãšã€E5-2600 ã‚’æ載ã—ã¦ã„ã‚Œã°ã©ã“ã®ãƒ™ãƒ³ãƒ€ãƒ¼ã®ã‚µãƒ¼ãƒãƒ¼ã§ã‚ã£ã¦ã‚‚ã€ãƒ¡ãƒ¢ãƒªãƒ¼ã®æ§‹æˆã«ã¯ã‚¹ã‚¤ãƒ¼ãƒˆã‚¹ãƒãƒƒãƒˆï¼ˆâ€œç¾Žå‘³ã—ã„â€æ§‹æˆï¼‰ãŒã‚ã‚Šã¾ã™ã€‚ 例ãˆã°ã€VMware vSphere ã‚’ Enterprise Plus ライセンスã§ä½¿ã†ã¨ã—ã¦ã€E5-2690 ã‚’ 2 基æ載ã—ãŸã‚µãƒ¼ãƒãƒ¼ã§ 192GB ã®ãƒ¡ãƒ¢ãƒªãƒ¼ã‚’æ載ã—ãŸã„å ´åˆã€8GB ã®DIMM ã‚’24枚（8GB x24枚）ã§ã‚‚ã€16GB ã® DIMM ã‚’12枚（16GB x12枚）ã§ã‚‚ 192GB ã«ãªã‚Šã¾ã™ã€‚ã—ã‹ã—ã€æ€§èƒ½é¢ã‹ã‚‰ã™ã‚‹ã¨ã€ã©ã¡ã‚‰ã‚‚美味ã—ã„構æˆã§ã¯ã‚ã‚Šã¾ã›ã‚“。ã§ã¯ã€ä¸€ç•ªç¾Žå‘³ã—ã„構æˆã¯ä½•ã§ã—ょã†ã‹ã€‚ç”ãˆã¯ã€16GB ã® DIMM ã‚’ 8 æžšã€8GB ã® DIMM ã‚’ 8 æžšã§ã™ã€‚
A Journey Through the CPU Pipeline
It is good for programmers to understand what goes on inside a processor. The CPU is at the heart of our career. What goes on inside the CPU? How long does it take for one instruction to run? What does it mean when a new CPU has a 12-stage pipeline, or 18-stage pipeline, or even a "deep" 31-stage pipeline? Programs generally treat the CPU as a black box. Instructions go into the box in order, inst
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Context switches much slower in new linux kernels
We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to believe. Let me be more specific about the test. We have a program that runs two threads. The first threa
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system performance using RHEL6 default scheduler is worse than RHEL5 - Red Hat Customer Portal
Red Hat Enterprise Linux Performance and Scalability May 2012 D. John Shakshober (Shak) Director Red Hat Performance Engineering Larry Woodman Consulting Engineer 
IBM Presentations: Smart Planet Template
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