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jitsu102 id:jitsu102

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CPUã‚’è‡ªä½œã—ãŸã‚Šã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ãƒ¼ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã‚’ç†è§£ã™ã‚‹ãŸã‚ã«ãŠã™ã™ã‚ã®æœ¬ã®ä¸€è¦§ - /var/log/hikalium
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jitsu102 2023/09/22
computer

hardware

cpu

architecture
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NVIDIAãŒã€ŒGraceã€ã¨ã„ã†CPUã‚’ç™ºè¡¨ã—ãŸã€‚2020å¹´NVIDIAã¨ã‚½ãƒ•ãƒˆãƒãƒ³ã‚¯ãŒåˆæ„ã—ãŸã€ã€Œã‚½ãƒ•ãƒˆãƒãƒ³ã‚¯ãŒæŒã¤Armç¤¾ã®æ ªå¼ã‚’NVIDIAã«å£²å´ã™ã‚‹ã€ã¨ã„ã†ã‚¹ã‚ãƒ¼ãƒ ã®åŠ¹æžœãŒæ—©ãã‚‚å‡ºã¦ããŸå½¢ã ã€‚ Graceã¯ã€ArmãŒè¨è¨ˆã™ã‚‹æ¬¡ä¸–ä»£ã®Neoverseï¼ˆãƒã‚ªãƒãƒ¼ã‚¹ï¼‰ã¨ã„ã†CPUã®IPãƒ‡ã‚¶ã‚¤ãƒ³ï¼ˆåŠå°Žä½“ã®è¨è¨ˆå›³ï¼‰ã‚’æŽ¡ç”¨ã—ã€æ¬¡ä¸–ä»£Neoverseã‚³ã‚¢ã‚’è¤‡æ•°å†…è”µã™ã‚‹CPUã«ãªã‚‹ã€‚ ã“ã®Armã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã®CPUè£½å“ãŒç™ºè¡¨ã•ã‚ŒãŸã“ã¨è‡ªä½“ã¯æ—¢å®šè·¯ç·šã§ã‚ã‚Šã€ä½•ã‚‚é©šãã¹ãäº‹ã§ã¯ãªã„ã€‚ ãã‚‚ãã‚‚NVIDIAã¯ã€Arm CPUã‚’æ—¢ã«10å¹´ä»¥ä¸Šå‰ã‹ã‚‰è²©å£²ã—ã¦ã„ã‚‹ã€‚å…·ä½“çš„ã«ã¯ã€åŒç¤¾ãŒã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³ã‚„ã‚¿ãƒ–ãƒ¬ãƒƒãƒˆå‘ã‘ã«ã‹ã¤ã¦è²©å£²ã—ã¦ã„ãŸã€ŒTegraã€ã€ãã—ã¦ç¾åœ¨è‡ªå‹•è»Šå‘ã‘ã«è²©å£²ã—ã¦ã„ã‚‹ã€ŒDRIVEã€ã‚·ãƒªãƒ¼ã‚ºã¯ã€Armãƒ™ãƒ¼ã‚¹ã®CPUã‚’å†…è”µã—ã¦ã„ã‚‹ã€‚ ã ã‹ã‚‰ã€ã€Œãƒ‡ãƒ¼ã‚¿ã‚»ãƒ³ã‚¿ãƒ¼å‘ã‘ã«Arm CPUã‚’æŠ•å…¥ã™ã‚‹ã€ã¨ã„ã†
jitsu102 2021/04/17
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intel

cpu
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Engadget | Technology News & Reviews
Google agrees to $68 million settlement in voice assistant privacy laws uitGoogle has agreed to a $68 million settlement regarding claims that its voice assistant inappropriately spied on smartphone users.
jitsu102 2020/07/19
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apple

cpu

arm

intel
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jitsu102 2020/06/15
cpu

engineer
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Does SMT still make sense?
Whatever machine youâ€™re reading this on, itâ€™s highly likely that not all of the CPUs shown by the OS are actually physical processors. Thatâ€™s because most modern processors use simultaneous multithreading (SMT) to improve performance by executing tasks in parallel. Intelâ€™s implementation of SMT is known as hyperthreading, and it was originally introduced in 2002 as a way to improve the performance
jitsu102 2020/01/03
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cpu

architecture

performance
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jitsu102 2018/03/25
computer

cpu

risc
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Meltdown, Spectre ã§å¦ã¶é«˜æ€§èƒ½ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ - FPGAé–‹ç™ºæ—¥è¨˜
å··ã§ã¯Intel, AMD, ARMã‚’å·»ãè¾¼ã‚“ã CPUã®ãƒã‚° "Meltdown", "Spectre" ãŒè©±é¡Œã§ã™ã€‚ ã“ã‚Œã‚‰ã®å•é¡Œã€å†…å®¹ã‚’èªã¿é€²ã‚ã¦ã„ãã¨ã€ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã«ãŠã‘ã‚‹é‡è¦ãªè¦ç´ ã‚’å¤šãå«ã‚“ã§ã„ã‚‹ã“ã¨ãŒåˆ†ã‹ã£ã¦æ¥ã¾ã—ãŸã€‚ ã¤ã¾ã‚Šã€ã“ã®CPUã®ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£å•é¡Œã‚’èªã¿è§£ã„ã¦ã„ãã¨ç¾ä»£ã®ãƒžã‚¤ã‚¯ãƒãƒ—ãƒã‚»ãƒƒã‚µãŒæŒã¤ã€æ€§èƒ½å‘ä¸Šã®ãŸã‚ã®ã‚ããªãæ©Ÿèƒ½è¿½åŠ ã®ä¸€ç«¯ãŒè¦‹ãˆã¦ãã‚‹ã®ã§ã¯ãªã„ã‹ã¨æ€ã„ã€Google, Intelã®æ–‡çŒ®ã‚’èªã¿è§£ã„ã¦ã¿ã‚‹ã“ã¨ã«ã—ã¾ã—ãŸã€‚ ãŒã€ç§ã¯ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã®å°‚é–€å®¶ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã—ã€éŽåŽ»ã«ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—PCå‘ã‘ã®ã‚ˆã†ãªå¤§è¦æ¨¡ãªCPUè¨è¨ˆã«å‚åŠ ã—ãŸã“ã¨ã‚‚ã‚ã‚Šã¾ã›ã‚“ã€‚ ã‚ãã¾ã§ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã«æ¯”è¼ƒçš„è¿‘ã„å ´æ‰€ã«ã„ã‚‹äººé–“ã¨ã—ã¦ã€ã“ã®å•é¡Œã®æœ¬è³ªã¯ã©ã“ã«ã‚ã‚‹ã®ã‹ã€å¯èƒ½ãªé™ã‚Šèªã¿è§£ã„ã¦ã„ãã€ç¾ä»£ã®ãƒžã‚¤ã‚¯ãƒãƒ—ãƒã‚»ãƒƒã‚µãŒæŒã¤é«˜æ€§èƒ½ã‹ã¤é«˜æ©Ÿèƒ½ãªå†…éƒ¨å®Ÿè£…ã«ã¤ã„ã¦è§£ãæ˜Žã‹ã—ã¦ã„ã
jitsu102 2018/01/07
cpu

architecture
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GoogleãŒç™ºè¦‹ã—ãŸã€ŒCPUã®è„†å¼±æ€§ã€ã¨ã¯ä½•ãªã®ã‹ã€‚ã‚²ãƒ¼ãƒžãƒ¼ã«æ§ãã€Œæ£ã—ãæã‚Œã‚‹ã€ãã®æ–¹æ³•ã¾ã¨ã‚ - 4Gamer.net
GoogleãŒç™ºè¦‹ã—ãŸã€ŒCPUã®è„†å¼±æ€§ã€ã¨ã¯ä½•ãªã®ã‹ã€‚ã‚²ãƒ¼ãƒžãƒ¼ã«æ§ãã€Œæ£ã—ãæã‚Œã‚‹ã€ãã®æ–¹æ³•ã¾ã¨ã‚ ãƒ©ã‚¤ã‚¿ãƒ¼ï¼šç±³ç”° è¡ ä¸€èˆ¬ãƒ¡ãƒ‡ã‚£ã‚¢ã«ã‚‚ãƒ‹ãƒ¥ãƒ¼ã‚¹ã¨ã—ã¦å–ã‚Šä¸Šã’ã‚‰ã‚ŒãŸã®ã§ï¼Œ2017å¹´æœ«ã‹ã‚‰ã«ã‚ã‹ã«é¨’ãŒã‚Œã ã—ãŸã€ŒCPUã®è„†å¼±æ€§ã€ã«ã¤ã„ã¦ã¯ï¼Œ4Gamerèªè€…ã‚‚å¤šããŒèžãåŠã‚“ã§ã„ã‚‹ã“ã¨ã ã‚ã†ã€‚æµ·å¤–ã§ã¯ï¼Œã€ŒSpectreã€ï¼ˆã‚¹ãƒšã‚¯ã‚¿ãƒ¼ï¼‰ã‚„ã€ŒMeltdownã€ï¼ˆãƒ¡ãƒ«ãƒˆãƒ€ã‚¦ãƒ³ï¼‰ã¨ã„ã£ãŸãŠã©ã‚ãŠã©ã‚ã—ã„åå‰ãŒä»˜ã„ã¦ã„ã‚‹ã®ã§ï¼Œãã¡ã‚‰ã‚’ç›®ã«ã—ãŸã¨ã„ã†èªè€…ã‚‚ã„ã‚‹ã¨æ€ã†ã€‚ ã€ŒIntelè£½ã®CPUã ã‘ãŒæŒã¤è„†å¼±æ€§ã§ï¼ŒAMDè£½ã®CPUãªã‚‰å•é¡Œãªã„ã€ã‹ã‚‰å§‹ã¾ã£ã¦ï¼Œã€Œã„ã‚„ã„ã‚„AMDè£½ã®CPUã‚‚åŒæ§˜ã®è„†å¼±æ€§ã‚’æŠ±ãˆã¦ã„ã‚‹ã€ï¼Œã•ã‚‰ã«ã¯ã€Œãƒ¡ãƒ¢ãƒªãƒšãƒ¼ã‚¸ãƒ³ã‚°æ–¹å¼ã®ä»®æƒ³è¨˜æ†¶ã‚’ä½¿ã†CPUã®ã™ã¹ã¦ãŒæŒã¤è„†å¼±æ€§ã§ã‚ã‚‹ã€ãªã©ã¨ï¼Œæƒ…å ±ãŒéŒ¯ç¶œã—ã¦ã„ã‚‹ã®ã§ï¼Œä½•ã‚’ä¿¡ã˜ãŸã‚‰ã„ã„ã®ã‹åˆ†ã‹ã‚‰ãªã„ã¨ã„ã†äººã‚‚å¤šã„ã®ã§ã¯ãªã‹ã‚ã†ã‹ã€‚ãã‚‚ãã‚‚ï¼Œãƒ¡ãƒ¢ãƒªãƒšãƒ¼ã‚¸ãƒ³ã‚°æ–¹å¼
jitsu102 2018/01/06
security

cpu
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ã€é‡è¦ã€‘MeltdownãŠã‚ˆã³Spectreï¼ˆCPUã®è„†å¼±æ€§ï¼‰ã«ã‚ˆã‚‹å¼Šç¤¾ã‚µãƒ¼ãƒ“ã‚¹ã¸ã®å½±éŸ¿ã«ã¤ã„ã¦ï¼ˆ2018å¹´1æœˆ12æ—¥11:22è¿½è¨˜ï¼‰ | ã•ãã‚‰ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆ
ã€é‡è¦ã€‘MeltdownãŠã‚ˆã³Spectreï¼ˆCPUã®è„†å¼±æ€§ï¼‰ã«ã‚ˆã‚‹å¼Šç¤¾ã‚µãƒ¼ãƒ“ã‚¹ã¸ã®å½±éŸ¿ã«ã¤ã„ã¦ï¼ˆ2018å¹´1æœˆ12æ—¥11:22è¿½è¨˜ï¼‰ ãŠå®¢ã•ã¾å„ä½ ã•ãã‚‰ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆæ ªå¼ä¼šç¤¾ å¹³ç´ ã‚ˆã‚Šã•ãã‚‰ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«æ ¼åˆ¥ã®ã”æ„›é¡§ã‚’è³œã‚Šã€èª ã«ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ 2018å¹´1æœˆ3æ—¥ã€ä¸‹è¨˜ã®è„†å¼±æ€§æƒ…å ±ãŒç™ºè¡¨ã•ã‚Œã¾ã—ãŸã€‚ã“ã‚Œã‚‰ã®è„†å¼±æ€§ã«å¯¾ã™ã‚‹å¼Šç¤¾ã® å¯¾å¿œçŠ¶æ³ã€ãŠã‚ˆã³ã€ãŠå®¢ã•ã¾ã¸ã®ãŠé¡˜ã„äº‹é …ã‚’ãŠçŸ¥ã‚‰ã›ã„ãŸã—ã¾ã™ã€‚ ãƒ»CVE-2017-5715ï¼ˆSpectreï¼‰ ãƒ»CVE-2017-5753ï¼ˆSpectreï¼‰ ãƒ»CVE-2017-5754ï¼ˆMeltdownï¼‰ ï¼ˆå‚è€ƒï¼‰Meltdown and Spectre https://meltdownattack.com/ ãªãŠã€æœ¬å†…å®¹ã¯2018å¹´1æœˆ5æ—¥æ™‚ç‚¹ã®æƒ…å ±ã«åŸºã¥ãè¨˜è¼‰ã—ã¦ãŠã‚Šã€ä»¥å¾Œã€æœ€æ–°æƒ…å ±ã‚’ åæ˜ ã—ã¦æ›´æ–°äºˆå®šã§ã™ã€‚ã¾ãŸã€å ´åˆã«ã‚ˆã£ã¦ã¯ã€ã”æ¡ˆå†…å†…å®¹ã«å¤‰æ›´
jitsu102 2018/01/06
security

cpu
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About speculative execution vulnerabilities in ARM-based and Intel CPUs - Apple Support
About speculative execution vulnerabilities in ARM-based and Intel CPUs Apple has released security updates for macOS Sierra and El Capitan with mitigations for Meltdown. Apple has released updates for iOS, macOS High Sierra, and Safari on Sierra and El Capitan to help defend against Spectre. Apple Watch is unaffected by both Meltdown and Spectre. Security researchers have recently uncovered secur
jitsu102 2018/01/06
security

cpu
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ãƒ—ãƒã‚»ãƒƒã‚µã®è„†å¼±æ€§ã€ŒMeltdownã€ã¨ã€ŒSpectreã€ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸ | DevelopersIO
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jitsu102 2018/01/06
security

cpu
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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
jitsu102 2018/01/06
security

cpu
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Meltdown and Spectre
Meltdown and Spectre Vulnerabilities in modern computers leak passwords and sensitive data. Meltdown and Spectre exploit critical vulnerabilities in modern processors. These hardware vulnerabilities allow programs to steal data which is currently processed on the computer. While programs are typically not permitted to read data from other programs, a malicious program can exploit Meltdown and Spec
jitsu102 2018/01/06
security

cpu
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https://jp.techcrunch.com/2018/01/04/2018-01-03-googles-project-zero-team-discovered-critical-cpu-flaw-last-year/
jitsu102 2018/01/04
security

cpu
ãƒªãƒ³ã‚¯
ã‚¤ãƒ³ãƒ†ãƒ«ã€ARMã€AMDãªã©å¤šæ•°ã®CPUã«è„†å¼±æ€§--å„ç¤¾ãŒå¯¾å¿œæ€¥ã
UPDATEã€€Googleã®ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒãƒ¼ãƒ ã€ŒProject Zeroã€ã¯ã€AMDã€ARMã€Intelã‚’å«ã‚€å¤šæ•°ã®CPUã«å½±éŸ¿ã™ã‚‹è„†å¼±æ€§ã€ŒMeltdownã€ã¨ã€ŒSpectreã€ã«ã¤ã„ã¦è©³ã—ã„æƒ…å ±ã‚’å…¬é–‹ã—ã€ãã®è„†å¼±æ€§ã«ã¯æŠ•æ©Ÿçš„å®Ÿè¡Œã®ä½¿ç”¨ãŒé–¢ä¿‚ã—ã¦ã„ã‚‹ã¨ã™ã‚‹ã†ã‚ã•ãŒäº‹å®Ÿã§ã‚ã‚‹ã“ã¨ã‚’èªã‚ãŸã€‚ AMDãƒãƒƒãƒ—ã®ãƒ¦ãƒ¼ã‚¶ãƒ¼ã«ã¨ã£ã¦é‡è¦ãªæƒ…å ±ã‚‚ã‚ã‚‹ã€‚AMDã¯ä»Šé€±ã«å…¥ã£ã¦åŒç¤¾ã®ãƒãƒƒãƒ—ã¯å½±éŸ¿ã‚’å—ã‘ãªã„ã¨ã‚³ãƒ¡ãƒ³ãƒˆã—ãŸãŒã€Googleã®è¦‹è§£ã¯ãã‚Œã¨ç•°ãªã‚‹ã€‚ Googleã¯ãƒ–ãƒã‚°ã®è¨˜äº‹ã§ã€ã€Œã“ã‚Œã‚‰ã®è„†å¼±æ€§ã¯ã€AMDã‚„ARMã€Intelã®ã‚‚ã®ã‚’å«ã‚€å¤šãã®CPUã€ãã—ã¦ã€ãã‚Œã‚‰ã‚’ä½¿ç”¨ã™ã‚‹ãƒ‡ãƒã‚¤ã‚¹ã‚„OSã«å½±éŸ¿ã™ã‚‹ã€ã¨è¿°ã¹ãŸã€‚ AMDã¯ãã®å¾Œã€åŒç¤¾ã®ãƒ—ãƒã‚»ãƒƒã‚µã¸ã®ã€Œãƒªã‚¹ã‚¯ã¯ã»ã¼çš†ç„¡ã€ã¨è€ƒãˆã¦ã„ã‚‹ã¨æ˜Žè¨€ã—ãŸã€‚ ã“ã®è„†å¼±æ€§ã¯ã€Project Zeroã®ç ”ç©¶è€…ã§ã‚ã‚‹Jann Hornæ°ãŒ2017å¹´ã«ç™ºè¦‹ã—ã¦ã„ãŸã¨ã„ã†ã€‚ã“ã‚Œã‚’æ‚ª
jitsu102 2018/01/04
security

cpu
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Linuxã®CPUä½¿ç”¨çŽ‡ã®%stealã«ã¤ã„ã¦ - Qiita
ã¯ã˜ã‚ã« Linux ã§æŽ¡å–ã§ãã‚‹CPUä½¿ç”¨é‡(çŽ‡)ã®æƒ…å ±ã¨ã—ã¦ã€%user ã‚„ %sys ç‰ã«åŠ ãˆã¦ %steal ã¨ã„ã†é‡ãŒã‚ã‚‹ã€‚ã“ã‚ŒãŒè¿½åŠ ã•ã‚ŒãŸã®ã¯ã€ä»®æƒ³åŒ–ãŒåºƒãä½¿ã‚ã‚Œã¯ã˜ã‚ãŸ10å¹´ãã‚‰ã„å‰ã ã‚ã†ã‹ã€‚ç†è€…ã¯ Xen ã‚’èª¿ã¹ã¦ã„ã¦æ°—ã¥ã„ãŸã®ã ãŒã€ã‚‚ã£ã¨å‰ã«s390ã®ãŸã‚ã«è¿½åŠ ã•ã‚ŒãŸã®ã‹ã‚‚ã—ã‚Œãªã„ã€‚å½“æ™‚ã€ESXã®å ´åˆã‚‚å«ã‚ã¦èª¿ã¹ã¦ã„ãŸã®ã ãŒã€æœ€è¿‘ã€KVMã®å ´åˆã«ã©ã†ã„ã†å®Ÿè£…ã«ãªã£ã¦ã„ã‚‹ã®ã‹ã€ãµã¨æ°—ã«ãªã£ã¦è»½ãèª¿ã¹ã¦ã¿ãŸã®ã§ãƒ¡ãƒ¢ã€‚ CPUä½¿ç”¨çŽ‡ã®è¨ˆç®— ã¾ãšæœ€åˆã«ã€sar ã‚„ vmstat ã‚„ mpstat ç‰ã€ã•ã¾ã–ã¾ãªãƒ„ãƒ¼ãƒ«ã§CPUä½¿ç”¨çŽ‡ã‚’å–å¾—ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã‚ã‘ã ãŒã€ã©ã®ã‚ˆã†ãªæƒ…å ±ã‚’å…ƒã«ã€ã©ã®ã‚ˆã†ãªè¨ˆç®—ã‚’è¡Œã£ã¦ç®—å‡ºã—ã¦ã„ã‚‹ã®ã‹ï¼Ÿ ã¾ãšã€kernelå†…ã§ã¯bootä»¥å¾Œã®å„ç¨®å®Ÿè¡Œãƒ¢ãƒ¼ãƒ‰ã®CPUæ™‚é–“ã‚’åˆ†é¡žã—ã¦ç©ç®—å€¤ã¨ã—ã¦ä¿æŒã—ã¦ã„ã‚‹ã€‚user ãƒ¢ãƒ¼ãƒ‰ã€ç‰¹æ¨©ãƒ¢ãƒ¼ãƒ‰ã€å‰²ã‚Šè¾¼ã¿å‡¦ç†ã«ä½¿ã£ãŸæ™‚é–“..
jitsu102 2017/05/23
linux

cpu
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Measuring Intel Hyper-Thread Overhead
Multi-core processors are capable of running multiple software streams/tasks concurrently. Multi-core allows a physical processor to simultaneously execute instructions from multiple processes or threads. Core of a processor is the part that executes application instructions. Core is shared by hardware threads (called Hyper-Threads).Â When two hyper-threads are active in the same core, it results i
jitsu102 2016/12/24
linux

cpu
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CPU DB - Looking At 40 Years of Processor Improvements | A complete database of processors for researchers and hobbyists alike.
Help Expand CPU-DB. As part of our ongoing efforts to improve CPU DB, we are actively trying to gather and publish information on ARM and other embedded processors. Contribute Â» Hi there! Welcome to CPU DB, a complete database of processors for researchers and hobbyists alike. You can browse the processor database by manufacturer, processor family, code name, or microarchitecture using the menu ab
jitsu102 2013/07/26
CPUã®é€²åŒ–ã®æ´å²

cpu

hardware
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ã€å¾Œè—¤å¼˜èŒ‚ã®Weeklyæµ·å¤–ãƒ‹ãƒ¥ãƒ¼ã‚¹ã€‘ æµ·å¤–ã®ã‚ªã‚¯ã‚¿ã‚³ã‚¢ç‰ˆGALAXY S4ã®ã€Œbig.LITTLEã€ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£
jitsu102 2013/05/22
cpu

arm

architecture

hardware
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