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åŒ—æ£®ç“¦ç‰ˆ - Crucial 2014å¹´å¾ŒåŠã«DDR4ãƒ¡ãƒ¢ãƒªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’ãƒãƒ¼ãƒ³ãƒã¸
åŒ—æ£®ç“¦ç‰ˆ - Northwood Blog (Author : åŒ—æ£®å…«é›². Since July 10, 2006.) Crucuial To Launch New DDR4 Memory Modules Under The Ballistix Brand â€“ 3000 MHz Frequencyï¼ˆWCCF Techï¼‰ Crucial DDR4-3000 for desktop PCs from autumn 2014ï¼ˆComputerBase.deï¼‰ Micron provides DDR4 details for servers, high-end desktopsï¼ˆThe Tech Reportï¼‰ Crucialã¯DDR4ãƒ¡ãƒ¢ãƒªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’2014å¹´å¾ŒåŠã«ãƒãƒ¼ãƒ³ãƒã™ã‚‹ã€‚ComputeBase.deãŒCES 2014ã§å±•ç¤ºã•ã‚Œã¦ã„ãŸCrucialã®DDR4ãƒ¡ãƒ¢ãƒªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã®Engine
peo3 2014/01/11
hardware

memory
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peo3 2013/05/02
AMD

CPU

GPU

memory
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peo3 2012/10/18
Intel

memory

future
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Java æš—å·åŒ–æ‹¡å¼µæ©Ÿèƒ½ JDK5.0
peo3 2009/07/23
Solaris

kernel

memory
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DBã‚µãƒ¼ãƒå‘ã‘Linuxãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã‚’è€ƒãˆã‚‹ ã€œ ãƒ¡ãƒ¢ãƒªã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆç·¨ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
Cã§ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ã„ã¦ã„ã¦å¤§é‡ã®ãƒ¡ãƒ¢ãƒªã‚’ç¢ºä¿ã—ãŸããªã£ãŸã¨ãã€å¤§æŠµã¯ mallocã‚’ä½¿ã†ã¨æ€ã„ã¾ã™ãŒã€ãã®éš›ã«ã¯æˆ»ã‚Šå€¤ãŒNULLã‹ã©ã†ã‹ã‚’åˆ¤æ–ã—ã¦ã‚¨ãƒ©ãƒ¼å‡¦ç†ã«é£›ã°ã™ã¨æ€ã„ã¾ã™ã€‚ã—ã‹ã—ã€Linux ã®ãƒ¡ãƒ¢ãƒªç®¡ç†ã‚µãƒ–ã‚·ã‚¹ãƒ†ãƒ ã«ã¯ã€Œãƒ¡ãƒ¢ãƒªãƒ»ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆã€ã¨ã„ã†æ©Ÿæ§‹ãŒã‚ã‚Šã€å®Ÿè£…ã•ã‚Œã¦ã„ã‚‹ãƒ¡ãƒ¢ãƒªä»¥ä¸Šã®é ˜åŸŸã‚’ç¢ºä¿ã§ãã¦ã—ã¾ã„ã¾ã™ã€‚ #include <stdio.h> #include <stdlib.h> int main() { int i; char *p; for(i=0;i<65536;i++){ p = (char *)malloc(65536); if(0 == (long)p){ break; } } printf("SIZE=%dMB\n",i*65536/1024/1024); return(0); } swapoff ã—ãŸãƒ¡ãƒ¢ãƒª 1G ã®ãƒžã‚·ãƒ³ã§ã“ã‚Œã‚’å®Ÿè¡Œã™ã‚‹ã¨ã“ã‚“ãªæ„Ÿã˜ã«ãª
peo3 2009/07/12
Linux

kernel

memory
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Transcendent memory [LWN.net]
LWN.net needs you!Without subscribers, LWN would simply not exist. Please consider signing up for a subscription and helping to keep LWN publishing Making the best use of available memory is one of the biggest challenges for any operating system. Throwing virtualization into the mix adds both new challenges (balancing memory use between guests, for example) and opportunities (sharing pages between
peo3 2009/07/09
Linux

kernel

MM

memory
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Linux Memory Overcommit - memologue
ã‹ãªã‚Šæ˜”ã§ã™ãŒã€æˆ–æ—¥ã•ã‚“ã®Solaris8ã«ãŠã‘ã‚‹memory over commitã®è©±é¡Œã«è§¦ç™ºã•ã‚Œã€Linuxã®å ´åˆã«ã¤ã„ã¦èª¿ã¹ãŸäº‹ãŒã‚ã‚Šã¾ã™ã€‚æ£ã—ã•ã¯ä¿è¨¼ã—ã¾ã›ã‚“ãŒå½“æ™‚ã®ãƒ¡ãƒ¢ã‚’è²¼ã£ã¦ãŠãã¾ã™ã€‚ memory overcommit? ãƒ¡ãƒ¢ãƒªè³‡æºã®éžå¸¸ã«é™ã‚‰ã‚ŒãŸç’°å¢ƒã§Linuxã‚’ä½¿ç”¨ã—ã¦ã„ã‚‹ã¨ã‚ˆãéé‡ã™ã‚‹ç¾è±¡ãªã®ã ãŒã€kernel 2.4ã¾ã§ã®Linuxã§ã¯ã€"mallocãŒæˆåŠŸã‚’è¿”ã—ãŸã«ã‚‚ã‹ã‹ã‚ã‚‰ãšã€ãã®ç¢ºä¿ã—ãŸçˆã®ãƒ¡ãƒ¢ãƒªé ˜åŸŸã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã¨ã€SIGKILLã«ã‚ˆã£ã¦kernelã‹ã‚‰å¼·åˆ¶çµ‚äº†ã•ã›ã‚‰ã‚Œã¦ã—ã¾ã†" ã¨ã„ã†ç¾è±¡ãŒ ç™ºç”Ÿã™ã‚‹ã“ã¨ãŒã‚ã‚‹ã€‚ã“ã‚Œã¯ã€ã€Œå…¨ãƒ—ãƒã‚»ã‚¹ãŒnew/mallocã—ãŸãƒ¡ãƒ¢ãƒªã®ç·é‡ã€ã«å¯¾ã—ã¦ç‰©ç†ãƒ¡ãƒ¢ãƒªé‡ãŒå°‘ãªã™ãŽã‚‹çž¬é–“ã«æ–¼ã„ã¦ã¯å¸¸ã«ç™ºç”Ÿã—å¾—ã‚‹ã€‚ ä½•ã«å›°ã£ã¦ã„ã‚‹ã‹ã¨ã„ãˆã°ã€C++ã§ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’newã—ãŸæ™‚ã«ã€ãƒ¡ãƒ¢ãƒªã®æž¯æ¸‡ã‚’std::bad_allocä¾‹å¤–é€å‡ºã¨ã„ã†å½¢ã§
peo3 2009/07/02
Linux

kernel

memory
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http://www.atmarkit.co.jp/flinux/rensai/tantei01/bangai01c.html Activeã¯ãƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚„ç„¡åãƒšãƒ¼ã‚¸ï¼ˆæ³¨3ï¼‰ã®ã†ã¡ã€æœ€è¿‘åˆ©ç”¨ã—ãŸã‚Šã€ã¾ã ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã¨ã®åŒæœŸãŒå–ã‚Œã¦ã„ãªã„ã€Œæ¨ã¦ã‚‰ã‚Œãªã„ã€ãƒšãƒ¼ã‚¸ã§ã™ã€‚Inactiveã¯ã€åŒã˜ããƒšãƒ¼ã‚¸ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚„ç„¡åãƒšãƒ¼ã‚¸ã®ã†ã¡ã€æœ€å¾Œã«ã‚¢ã‚¯ã‚»ã‚¹ã•ã‚Œã¦ã‹ã‚‰ã‚ã‚‹ç¨‹åº¦æ™‚é–“ãŒãŸã¡ã€ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã¨ã®åŒæœŸã‚‚å®Œäº†ã—ã¦ã„ã¦ã€ã™ãã«æ¨ã¦ã‚‰ã‚Œã‚‹ãƒšãƒ¼ã‚¸ã§ã™ã€‚ã‚ˆã£ã¦ã€/proc/meminfoã®å‡ºåŠ›ã§ã„ã†ã¨ã“ã‚ã® MemFreeã¨Inactiveã‚’è¶³ã™ã“ã¨ã§ç¢ºå®Ÿã«åˆ©ç”¨å¯èƒ½ãªãƒ¡ãƒ¢ãƒªé‡ã‚’ç®—å‡ºã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ ï¼ˆå®Ÿéš›ã«åˆ©ç”¨å¯èƒ½ãªãƒ¡ãƒ¢ãƒªé‡ï¼‰â‰’ï¼ˆMemFreeï¼‹Inactiveï¼‰ ã“ã®å€¤ã‚’åˆ©ç”¨ã—ã€ä¸€å®šé‡ã‚’ä¸‹å›žã‚‰ãªã„ã‚ˆã†ã«ã™ã‚‹ã®ãŒã€ç°¡å˜ãƒ»ç¢ºå®Ÿãªãƒ¡ãƒ¢ãƒªåˆ©ç”¨çŽ‡ç›£è¦–æ³•ã¨ã„ãˆã¾ã™ã€‚ é–“é•ã£ã¦ã‚‹ã€‚å®Œå…¨ã«ã€‚ ãŸã¶ã‚“NTT OSSã‚»ãƒ³ã‚¿ã¨ã„
peo3 2009/04/16
Linux

kernel

memory
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https://atmarkit.itmedia.co.jp/fsys/zunouhoudan/106zunou/inductance.html
peo3 2009/03/26
hardware

science

CPU

memory

research
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2008 IRPSãƒ¬ãƒãƒ¼ãƒˆã€ã‚½ãƒ•ãƒˆã‚¨ãƒ©ãƒ¼ç·¨ã€‘ãƒ¡ãƒ¢ãƒªã§è¤‡æ•°ã®ãƒ“ãƒƒãƒˆãŒåè»¢ã™ã‚‹ã‚½ãƒ•ãƒˆã‚¨ãƒ©ãƒ¼
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peo3 2008/05/02
ã€Žæœ€å…ˆç«¯ã®SRAMã§ã¯ã€ã‚·ãƒ³ã‚°ãƒ«ã‚¤ãƒ™ãƒ³ãƒˆã‚¢ãƒƒãƒ—ã‚»ãƒƒãƒˆå…¨ä½“ã®40ã€œ60%ã‚’ãƒžãƒ«ãƒã‚»ãƒ«ã‚¢ãƒƒãƒ—ã‚»ãƒƒãƒˆãŒå ã‚ã‚‹ã¨è¨€ã‚ã‚Œã¦ã„ã‚‹ã€‚ã€

hardware

memory
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AKIBA PC Hotline! Junk Blog.: i-RAMÃ—6å°ã‚’ä½¿ã£ãŸRAID 0ã®å‹•ä½œãƒ‡ãƒ¢é–‹å§‹
i-RAMÃ—6å°(PCIç‰ˆÃ—4æžš+BOXç‰ˆÃ—2å°)ã‚’ä½¿ã£ãŸRAID 0ã®å‹•ä½œãƒ‡ãƒ¢ãŒT-ZONE. PC DIY SHOPã§è¡Œã‚ã‚Œã¦ã„ã¾ã™ã€‚ãƒ‡ãƒ¢æœŸé–“ã¯20æ—¥(æ—¥)ã¾ã§ã€‚ ã¡ãªã¿ã«ã“ã‚Œã€T-ZONE. PC DIY SHOPã‚·ãƒ§ãƒƒãƒ—ã‚¹ã‚¿ãƒƒãƒ•ã®Mã•ã‚“ã¨ç†è€…ã®i-RAMã‚’æŒã¡å¯„ã£ã¦ä½œæˆã—ãŸãƒ‡ãƒ¢æ©Ÿã ã£ãŸã‚Šã—ã¾ã™ã€‚ä¸€å¿œã§ã™ãŒã€PCã‚±ãƒ¼ã‚¹2å°ã§1å°ã®PCã¨ã—ã¦å‹•ä½œä¸ã€‚PCã‚±ãƒ¼ã‚¹1å°ã«i-RAMã‚’å…¨ã¦å…¥ã‚Œã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“ã§ã—ãŸ(è‹¦ç¬‘)ã€‚ å·¦ã®ç”»åƒãŒCrystalDiskMark 2.1ã®ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯çµæžœã§ã™ã€‚ã‚·ãƒ¼ã‚±ãƒ³ã‚·ãƒ£ãƒ«ãƒªãƒ¼ãƒ‰ã§691MB/sã¨ãªã‹ãªã‹ã®é€Ÿåº¦ãŒã§ã¦ã„ã¾ã™ã€‚700MB/sã‚’è¶…ãˆã‚‰ã‚Œãªã‹ã£ãŸã®ã¯æ®‹å¿µã§ã™ãŒã€i-RAM1æžšã‚ãŸã‚Šã®é€Ÿåº¦ã¯100MB/sã‚’è¶…ãˆã¦ã„ã‚‹ã®ã§ãªã‹ãªã‹ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ 691MB/sã¨è¨€ã‚ã‚Œã¦ã‚‚ãƒ”ãƒ³ã¨æ¥ãªã„äººãŒå¤šã„ã¨æ€ã†ã®ã§ã€HDDã¨ã®æ¯”è¼ƒã‚‚æ’®ã£ã¦ãã¾ã—ãŸã€‚ä¸€ç•ªä¸‹ã®
peo3 2008/04/20
memory

PC

HDD

RAID

performance
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peo3 2008/03/22
PC

memory
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http://www.ideal.ece.ufl.edu/workshops/wiosca07/P4Slides.pdf
peo3 2008/02/20
research

PDF

memory

performance

Linux
ãƒªãƒ³ã‚¯
What Every Programmer Should Know About Memory
What Every Programmer Should Know About Memory Ulrich Drepper Red Hat, Inc. [email protected] November 21, 2007 Abstract As CPU cores become both faster and more numerous, the limiting factor for most programs is now, and will be for some time, memory access. Hardware designers have come up with ever more sophisticated memory handling and acceleration techniquesâ€“such as CPU cachesâ€“but these canno
peo3 2008/02/11
ã“ã‚Œã™ã’ãƒ¼

memory

hardware

paper

PDF
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å¾Œè—¤å¼˜èŒ‚ã®Weeklyæµ·å¤–ãƒ‹ãƒ¥ãƒ¼ã‚¹
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peo3 2008/02/04
memory

hardware
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Humanoid robots are a bad ideaMultiple companies are now using robots that walk and talk like human beings. What could go wrong?
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