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CPUã®è„†å¼±æ€§ Meltdownã¨Spectreã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸ - piyolog
2018å¹´1æœˆ3æ—¥ã«CPUã«é–¢é€£ã™ã‚‹3ã¤ã®è„†å¼±æ€§æƒ…å ±ãŒå…¬é–‹ã•ã‚Œã¾ã—ãŸã€‚å ±å‘Šè€…ã«ã‚ˆã‚‹ã¨ã“ã‚Œã‚‰ã®è„†å¼±æ€§ã¯Meltdownã€Spectreã¨å‘¼ç§°ã•ã‚Œã¦ã„ã¾ã™ã€‚ã“ã“ã§ã¯é–¢é€£æƒ…å ±ã‚’ã¾ã¨ã‚ã¾ã™ã€‚ è„†å¼±æ€§ã®æ¦‚è¦ å ±å‘Šè€…ãŒè„†å¼±æ€§æƒ…å ±ã‚’æ¬¡ã®å°‚ç”¨ã‚µã‚¤ãƒˆã§å…¬é–‹ã—ãŸã€‚ Meltdown and Spectre (ã¾ãŸã¯ã“ã¡ã‚‰) 3ã¤ã®è„†å¼±æ€§ã®æ¦‚è¦ã‚’ã¾ã¨ã‚ã‚‹ã¨æ¬¡ã®é€šã‚Šã€‚ è„†å¼±æ€§ã®åç§° Meltdown Spectre CVE CVE-2017-5754ï¼ˆRogue data cache loadï¼‰ CVE-2017-5753ï¼ˆBounds check bypassï¼‰ CVE-2017-5715ï¼ˆBranch target injectionï¼‰ å½±éŸ¿ã‚’å—ã‘ã‚‹CPU Intel Intelã€AMDã€ARM CVSSv3 åŸºæœ¬å€¤ 4.7(JPCERT/CC) 5.6(NIST) â†ã«åŒã˜ PoC å ±å‘Šè€…éžå…¬é–‹ è«–æ–‡ä¸ã«x
nullpop8857 2018/01/05
CPU

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CPU Utilization is Wrong
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nullpop8857 2017/05/10
CPU

monitoring
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ã€ãƒ¬ãƒ“ãƒ¥ãƒ¼ã€‘ Skylakeã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã‚’æŽ¡ç”¨ã—ãŸã€ŒCore i7-6700Kã€ãƒ¬ãƒ“ãƒ¥ãƒ¼
nullpop8857 2015/08/06
CPU

Intel
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RDS (MySQL) ã§å¤§è¦æ¨¡ãƒ†ãƒ¼ãƒ–ãƒ«ã‚’é‹ç”¨ã™ã‚‹éš›ã®æ³¨æ„ç‚¹ | Hack
ã“ã®æŠ•ç¨¿ã¯ AWS Advent Calendar 2014 ã® 22æ—¥ç›®ã®è¨˜äº‹ã§ã™ã€‚ RDS ã§ MySQL ã‚’é‹ç”¨ä¸ã«ã€æƒ³å®šå¤–ã® CPU ã‚¹ãƒ‘ã‚¤ã‚¯ã«æ‚©ã¾ã•ã‚ŒãŸã“ã¨ãŒã‚ã‚Šã¾ã—ãŸã®ã§çºã‚ã¦ãŠãã¾ã™ã€‚ ã¾ãšã¯ã€CloudWatch ã®ã‚°ãƒ©ãƒ•ã‚’è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ æ‰€ã€…ã§ CPU ã‚¹ãƒ‘ã‚¤ã‚¯ãŒç™ºç”Ÿã—ã¦ã„ã‚‹ã®ãŒã‚ã‹ã‚‹ã‹ã¨æ€ã„ã¾ã™ã€‚ä¸€è¦‹ã™ã‚‹ã¨æ³•å‰‡æ€§ãŒãªã„ã‚ˆã†ã«ã‚‚è¦‹ãˆã¾ã™ã€‚ä¸€èˆ¬çš„ã«ã¯ CPU ãƒªã‚½ãƒ¼ã‚¹ã‚’æ¶ˆè²»ã™ã‚‹è¦å› ã¨ã—ã¦ã¯ã€ã‚¢ã‚¯ã‚»ã‚¹éŽå¤šã‚„ãƒãƒƒãƒå‡¦ç†ãªã©ã§è² è·ã‚’ã‹ã‘ãŸã‚±ãƒ¼ã‚¹ãŒæ®†ã©ã§ã™ã€‚ã—ã‹ã—ã€ä»Šå›žã®ã‚±ãƒ¼ã‚¹ã¯ãƒ¦ãƒ¼ã‚¶ãƒ¼å´ã§ã¯ä½•ã‚‚è² è·ã‚’ã‹ã‘ã¦ãŠã‚‰ãšã€RDS ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ãŒã‚¼ãƒã®ã‚µãƒ¼ãƒãƒ¼ã§ã‚‚åŒæ§˜ã® CPU ã‚¹ãƒ‘ã‚¤ã‚¯ãŒç™ºç”Ÿã™ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚ CPU ã‚¹ãƒ‘ã‚¤ã‚¯ã®åŽŸå› ã¯ï¼Ÿ ã§ã¯ã€CPU ã‚¹ãƒ‘ã‚¤ã‚¯ã®åŽŸå› ã¯ä½•ã ã£ãŸã®ã§ã—ã‚‡ã†ï¼Ÿãã®å¾Œã®èª¿æŸ»ã§ã€ŒRDS ã®å®šæœŸãƒ¡ãƒ³ãƒ†ãƒŠãƒ³ã‚¹ã‚¸ãƒ§ãƒ–ã€ãŒåŽŸå› ã§ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚ ä»¥ä¸‹ã€ãƒ¡ãƒ³
nullpop8857 2014/12/24
RDS

mysql

aws

CPU
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(JP) GPGPUãŒPostgreSQLã‚’åŠ é€Ÿã™ã‚‹
2. è‡ªå·±ç´¹ä»‹ â–Œåå‰: æµ·å¤– æµ©å¹³ â–Œæ‰€å±žï¼š NEC OSSæŽ¨é€²ã‚»ãƒ³ã‚¿ãƒ¼ â–Œå¥½ããªã‚‚ã®ï¼š ã‚³ã‚¢ã®å¤šã„ãƒ—ãƒã‚»ãƒƒã‚µ â–Œå«Œã„ãªã‚‚ã®ï¼š ã‚³ã‚¢ã®å°‘ãªã„ãƒ—ãƒã‚»ãƒƒã‚µ â–ŒçµŒæ´: ï¬HPC ïƒ¨ OSS/Linux ïƒ¨ SAP ïƒ¨ GPU/PostgreSQL â–ŒTw: @kkaigai â–Œä¸»ãªä»•äº‹ ï¬SELinuxå‘¨ã‚Šè«¸ã€… (2004~) â€¢Lockless AVCã€JFFS2 XATTRãªã© ï¬PostgreSQLå‘¨ã‚Šè«¸ã€… (2008~) â€¢SE-PostgreSQLã€Security Barrier Viewã€Writable FDWãªã© ï¬PG-Strom (2012~) DB Tech Showcase 2014 Tokyo; PG-Strom - GPGPU acceleration on PostgreSQL Page. 2 4. GPU (Graphic Processor Unit) ã®ç‰¹
nullpop8857 2014/11/14
postgresql

gpgpu

CPU
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5. All programmer should know â€¢ L1 ã‚ãƒ£ãƒƒã‚·ãƒ¥å‚ç…§......................... 0.5 ns â€¢ åˆ†å²äºˆæ¸¬ãƒŸã‚¹............................ 5 ns â€¢ L2 ã‚ãƒ£ãƒƒã‚·ãƒ¥å‚ç…§........................... 7 ns â€¢ Mutex lock/unlock ........................... 25 ns â€¢ Main memory å‚ç…§...................... 100 ns 7. ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚³ãƒ’ãƒ¼ãƒ¬ãƒ³ãƒˆï¼Ÿ â€¢ è¤‡æ•°ã®CPUã‚³ã‚¢ã‹ã‚‰è¦‹ãˆã‚‹ãƒ¡ãƒ¢ãƒªã¯åŒä¸€ã§ãª ã„ã¨å›°ã‚‹ â€¢ ã¤ã¾ã‚Šè¤‡æ•°ã®CPUã‚³ã‚¢ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã¯å¸¸ã«æœ€ æ–°ã®æƒ…å ±ã‚’ä¿æŒã—ã¦ãªã„ã¨å›°ã‚‹ â€¢ ã ãŒå¸¸ã«æœ€æ–°ã®æƒ…å ±ã‚’å…¨éƒ¨ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«å…¨ ã¦æ›¸ãç¶šã‘ã‚‹ã®ã¯é€Ÿåº¦ãŒå‡ºãªã„ã®ã§ã€ã¾ã‚‹ã§ æœ¬å½“ã«å…¨éƒ¨ã®ã‚ãƒ£ãƒƒã‚·
nullpop8857 2014/10/25
CPU
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Haswell-Eã€ŒCore i7-5960Xã€ãƒ¬ãƒ“ãƒ¥ãƒ¼ã€‚ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—PCç”¨åˆã®8ã‚³ã‚¢16ã‚¹ãƒ¬ãƒƒãƒ‰ï¼†DDR4å¯¾å¿œCPUã«ï¼Œã‚²ãƒ¼ãƒžãƒ¼ã¯æ‰‹ã‚’å‡ºã™ã¹ãã‹
ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—PCç”¨åˆã®8ã‚³ã‚¢16ã‚¹ãƒ¬ãƒƒãƒ‰ï¼†DDR4å¯¾å¿œCPUã«ï¼Œã‚²ãƒ¼ãƒžãƒ¼ã¯æ‰‹ã‚’å‡ºã™ã¹ãã‹ Core i7-5960X Extreme Edition TextÂ byÂ å®®å´ŽçœŸä¸€ å…¥æ‰‹ã—ãŸi7-5960X CPUã€‚Intelã®æœ€æ–°CPUã¯ã€Œæ€§èƒ½è©•ä¾¡ç”¨ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãƒªãƒ³ã‚°ã‚µãƒ³ãƒ—ãƒ«ã€ã‚’å…¥æ‰‹ã™ã‚‹ã‚±ãƒ¼ã‚¹ãŒå¤šã„ã®ã ãŒï¼Œä»Šå›žã¯ã€ŒSR20Qã€ã¨ã„ã†S-Specã‚‚åˆ»ã¾ã‚ŒãŸè£½å“ç‰ˆã åˆ¥é€”ãŠä¼ãˆã—ã¦ã„ã‚‹ã¨ãŠã‚Šï¼Œ2014å¹´8æœˆ30æ—¥ï¼ŒIntelã‹ã‚‰ãƒã‚¤ã‚¨ãƒ³ãƒ‰ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—PCå‘ã‘æ–°è£½å“ã§ã‚ã‚‹Core i7-5000ç•ªå°ãŒç™ºè¡¨ã«ãªã£ãŸã€‚é–‹ç™ºã‚³ãƒ¼ãƒ‰ãƒãƒ¼ãƒ ã€ŒHaswell-Eã€ï¼ˆãƒã‚¹ã‚¦ã‚§ãƒ«Eã‚‚ã—ãã¯ãƒã‚ºã‚¦ã‚§ãƒ«Eï¼‰ã¨å‘¼ã°ã‚Œã¦ã„ãŸè£½å“ç¾¤ã ã€‚ ä»Šå›ž4Gamerã§ã¯ï¼Œãã®ãªã‹ã§æœ€ä¸Šä½ã«ä½ç½®ã¥ã‘ã‚‰ã‚Œã‚‹ï¼ŒIntelåˆã®ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—PCå‘ã‘8ã‚³ã‚¢CPUã€ŒCore i7-5960X Extreme Editionã€ï¼ˆä»¥ä¸‹ï¼Œi7-5960Xï¼‰ã‚’
nullpop8857 2014/08/30
CPU
ãƒªãƒ³ã‚¯
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