[B! linux] mrknã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

mrkn id:mrkn

linuxã«é–¢ã™ã‚‹mrknã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (89)

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Linuxã®loadavgãŒç´„7æ™‚é–“ã”ã¨ã«ä¸Šæ˜‡ã™ã‚‹ç¾è±¡ã®åŽŸå› - Mackerel ãƒ–ãƒã‚° #mackerelio
Mackerelãƒãƒ¼ãƒ ã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®id:itchynyã§ã™ã€‚ ã€Œmackerel-agentã‚’å…¥ã‚Œã‚‹ã¨loadavgãŒ7æ™‚é–“ã”ã¨ã«ä¸Šæ˜‡ã™ã‚‹ã€ å…ˆæ—¥ã€ã“ã®ã‚ˆã†ãªå•ã„åˆã‚ã›ã‚’è¤‡æ•°ã®ãŠå®¢ã•ã¾ã‹ã‚‰å—ã‘ã¾ã—ãŸã€‚ç§ã‚‚å®Ÿé¨“ã—ã¦ã¿ãŸã¨ã“ã‚ã€ç¢ºã‹ã«å†ç¾ã—ã¾ã—ãŸã€‚EC2 t2.microã«mackerel-agentã‚’å…¥ã‚Œã¦ç°¡å˜ãªãƒã‚°ç›£è¦–ã¨ãƒ—ãƒã‚»ã‚¹ç›£è¦–ã‚’è¨å®šã—ã€æ•°æ—¥æ”¾ç½®ã—ã¾ã—ãŸã€‚ ç¢ºã‹ã«ã€ç´„7æ™‚é–“ã”ã¨ã«loadavgãŒä¸Šæ˜‡ã—ã¦ã„ã¾ã™ã€‚ã“ã®å‘¨æœŸã®cronã®è¨å®šã¯ã—ã¦ãŠã‚‰ãšã€ã¾ãŸmackerel-agentå†…éƒ¨ã§ã‚‚7æ™‚é–“ã”ã¨ã«è¡Œã†å‡¦ç†ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ã—ã‹ã—ã€ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã‚’å¤šãå…¥ã‚Œã‚‹ã»ã©loadavgã®ãƒ”ãƒ¼ã‚¯å€¤ã‚‚ä¸ŠãŒã‚Šã¾ã™ã€‚ æœ¬ã‚¨ãƒ³ãƒˆãƒªãƒ¼ã§ã¯ã€ã“ã®ç¾è±¡ã®åŽŸå› ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ loadavgãŒä¸Šæ˜‡ã™ã‚‹åŽŸå› ã‚’èª¿ã¹ã‚‹ã«ã¯ã€ã¾ãšloadavgè‡ªä½“ãŒã©ã†è¨ˆç®—ã•ã‚Œã¦ã„ã‚‹ã‹ã‚’çŸ¥ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ã¾ãšã¯ã€LinuxãŒloada
mrkn 2018/06/13
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linux

loadavg

mackerel
ãƒªãƒ³ã‚¯
I/Oè² è·ã®æ£ç¢ºãªçŠ¶æ³ã¯iowaitã§ã¯åˆ†ã‹ã‚Šã¾ã›ã‚“ - Qiita
ã•ãã‚‰ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®ã‚¢ãƒ‰ãƒ™ãƒ³ãƒˆã‚«ãƒ¬ãƒ³ãƒ€ãƒ¼9æ—¥ç›®ã¨ã—ã¦ã€ã‚µãƒ¼ãƒå±‹ã‚‰ã—ãã€é‹ç”¨ã«é–¢ã™ã‚‹ã‚³ãƒžãƒ³ãƒ‰ã®ä½¿ã„æ–¹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ ã‚µãƒ¼ãƒã®è² è·ãŒé«˜ã¾ã£ã¦ããŸã¨ãã«ã€vmstatã‚„topãªã©ã®ã‚³ãƒžãƒ³ãƒ‰ã§èª¿æŸ»ã™ã‚‹äº‹ãŒå‡ºæ¥ã¾ã™ãŒã€I/Oè² è·ã‚’wa(iowait)ã«ã‚ˆã£ã¦åˆ¤æ–ã™ã‚‹äººã‚‚å¤šã„ã¨æ€ã„ã¾ã™ã€‚ ãŸã ã€çµè«–ã‹ã‚‰è¨€ã†ã¨ã€iowaitã¯æ£ç¢ºã«I/Oã®è² è·ã‚’è¡¨ã—ã¦ã„ã‚‹ã‚ã‘ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ ã“ã‚Œã‚‰ã‚’ã€å®Ÿéš›ã«æ¼”ç¿’ã‚’ã—ãªãŒã‚‰è¦‹ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ iowaitã¨idle iowaitã¨ã¯ã‚ãã¾ã§ã‚‚ã€CPUãŒç©ºã„ã¦ã„ã‚‹ã®ã«I/OãŒãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã«ãªã£ã¦ã„ã‚‹ãƒ—ãƒã‚»ã‚¹ã‚’ç¤ºã—ã¦ã„ã‚‹ã ã‘ã§ã€CPUã®åˆ©ç”¨çŽ‡ãŒé«˜ã„ã¨ãã«ã¯I/OãŒãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã«ãªã£ã¦ã„ã¦ã‚‚iowaitãŒä¸ŠãŒã‚Šã¾ã›ã‚“ã€‚ åŒæ§˜ã«å‹˜é•ã„ã•ã‚ŒãŒã¡ãªã®ãŒã€id(idle)ã¯CPUã®ç©ºãã‚’ç¤ºã—ã¦ã„ã‚‹ã¨ã„ã†ã‚‚ã®ã§ã™ãŒã€idleã¯å¿…ãšã—ã‚‚CPUã®ç©ºãæ™‚é–“ã‚’ç¤ºã—ã¦ã„ã‚‹ã‚‚ã®ã§ã¯ã‚ã‚Šã¾ã›
mrkn 2017/12/19
linux
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Dockerã€ã€ŒLinuxKitã€ã‚’ç™ºè¡¨ã€‚ã‚³ãƒ³ãƒ†ãƒŠãƒ©ãƒ³ã‚¿ã‚¤ãƒ ã®ãŸã‚ã ã‘ã«ã‚¼ãƒã‹ã‚‰é–‹ç™ºã•ã‚ŒãŸã‚»ã‚ãƒ¥ã‚¢ãªLinux Subsystemã€‚DockerCon 2017
Dockerã€ã€ŒLinuxKitã€ã‚’ç™ºè¡¨ã€‚ã‚³ãƒ³ãƒ†ãƒŠãƒ©ãƒ³ã‚¿ã‚¤ãƒ ã®ãŸã‚ã ã‘ã«ã‚¼ãƒã‹ã‚‰é–‹ç™ºã•ã‚ŒãŸã‚»ã‚ãƒ¥ã‚¢ãªLinux Subsystemã€‚DockerCon 2017 Dockerã¯ã€ã‚³ãƒ³ãƒ†ãƒŠã®å®Ÿè¡Œã«å¿…è¦ãªæ©Ÿèƒ½ã«ç‰¹åŒ–ã—ãŸLinux Subsystemã€ŒLinuxKitã€ã‚’ã€ãƒ†ã‚ã‚µã‚¹å·žã‚ªãƒ¼ã‚¹ãƒãƒ³ã§é–‹å¹•ã—ãŸåŒç¤¾ã®ã‚¤ãƒ™ãƒ³ãƒˆã€ŒDockerCon 2017ã€ã§ç™ºè¡¨ã—ã¾ã—ãŸã€‚ Linux Subsystemã¨ã¯ã€ä¾‹ãˆã°Windows 10ã®bashæ©Ÿèƒ½ãŒWindows 10å†…éƒ¨ã«ç”¨æ„ã•ã‚ŒãŸLinux Subsystemã§å®Ÿç¾ã•ã‚Œã¦ã„ã‚‹ã‚ˆã†ã«ã€ã‚·ã‚¹ãƒ†ãƒ ã®ä¸€éƒ¨ã¨ã—ã¦çµ„ã¿è¾¼ã¾ã‚Œã¦å‹•ä½œã—ã€Linuxã®æ©Ÿèƒ½ã‚’æä¾›ã™ã‚‹ã‚³ãƒ³ãƒãƒ¼ãƒãƒ³ãƒˆã‚’æŒ‡ã™ä¸€èˆ¬åç§°ã§ã™ã€‚ ã¤ã¾ã‚ŠLinuxKitã¨ã¯ã€ã‚³ãƒ³ãƒ†ãƒŠãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã«çµ„ã¿è¾¼ã¾ã‚Œã¦Linuxã®æ©Ÿèƒ½ã‚’æä¾›ã™ã‚‹ã‚³ãƒ³ãƒãƒ¼ãƒãƒ³ãƒˆã¨ã„ã†ã“ã¨ã«ãªã‚Šã¾ã™ã€‚ Linux Foundationãªã©ã¨
mrkn 2017/04/19
linux

docker
ãƒªãƒ³ã‚¯
Linux ã‚·ã‚°ãƒŠãƒ«ã®åŸºç¤Ž
TLPI (The Linux Programming Interface) å†ã€…ã€‚ TLPI ã®è¼ªèªã®éš›ã« @matsumotory ã‚ˆã‚Šã‚·ã‚°ãƒŠãƒ«ã‚»ãƒƒãƒˆã‚ãŸã‚Šã‚’ã¾ã¨ã‚ã‚‹ã‚ˆã†ã«ã¨æŒ‡ä»¤ãŒå‡ºãŸã®ã§ã€æ‹™é…ãªæ„Ÿã˜ã§ã¾ã¨ã‚ã¾ã—ãŸã€‚ ã‚·ã‚°ãƒŠãƒ«ã¨ã¯ ãƒ—ãƒã‚»ã‚¹é–“é€šä¿¡ã®ä¸€ç¨®ã€‚ã€Œãƒ—ãƒã‚»ã‚¹ã«ã‚·ã‚°ãƒŠãƒ«ã‚’é€ä¿¡ã™ã‚‹ã¨ã€ãã®ãƒ—ãƒã‚»ã‚¹ã®æ£å¸¸å‡¦ç†ã«å‰²ã‚Šè¾¼ã‚“ã§ã€ã‚·ã‚°ãƒŠãƒ«å›ºæœ‰ã®å‡¦ç†(ã‚·ã‚°ãƒŠãƒ«ãƒãƒ³ãƒ‰ãƒ©) ãŒå®Ÿè¡Œã•ã‚Œã‚‹ã€ãƒ—ãƒã‚»ã‚¹å´ã§ã¯ã€ã‚·ã‚°ãƒŠãƒ«ã‚’å—ä¿¡ã—ãŸéš›ã®å‹•ä½œ(ã‚·ã‚°ãƒŠãƒ«ãƒãƒ³ãƒ‰ãƒ©) ã‚’è¨å®šã™ã‚‹ã“ã¨ã‚„ã€ã‚·ã‚°ãƒŠãƒ«ã‚’ãƒ–ãƒãƒƒã‚¯ã™ã‚‹ã“ã¨ã‚‚å¯èƒ½ã€‚ ã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã§ã€ãƒ—ãƒã‚»ã‚¹ã‚’çµ‚äº†ã•ã›ã‚‹ãŸã‚ã«kill -9 <PID>ã¨ã‹Ctrl+Cã¨ã‹ã—ãŸéš›ã«ã‚‚ã€å¯¾è±¡ãƒ—ãƒã‚»ã‚¹ã«ã‚·ã‚°ãƒŠãƒ«ãŒé€ä¿¡ã•ã‚Œã¦ã„ã‚‹ã€‚ ã¡ãªã¿ã«ã€PIDã€Œ1ã€ã® init ã‚„ systemd ã«kill -9 1ã—ã¦ã‚‚ä½•ã‚‚èµ·ã‚‰ãªã„ã€‚(ãã†ã„ãˆã°æ˜”ã€oom-killer ã« init ã‚’æ®ºã•ã‚ŒãŸè¦š
mrkn 2017/01/24
linux

signal
ãƒªãƒ³ã‚¯
perfã®ä½¿ã„ã‹ãŸ
æ¦‚è¦ Linuxã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹è§£æžãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹perfã®ä½¿ã„ã‹ãŸã®ç´¹ä»‹ èƒŒæ™¯ å€‹äººçš„ã«perfã‚ˆãã§ãã¦ã‚‹ã¨æ€ã†ã®ã§ç´¹ä»‹ã—ãŸã„ã¨ã„ã†ã®ã¨ã€ ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿æ–¹ã£ã¦ã‚ã‚“ã¾ã‚ŠçŸ¥ã‚‰ã‚Œã¦ãªã„ã¿ãŸã„ãªã®ã§ã€ ãã‚Œã®è§£èª¬ã‚’æ›¸ããŸã„ã€‚ æ§‹æˆ perf ã«ã¤ã„ã¦èª¬æ˜Žã—ãŸã‚ã¨ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿ã‹ãŸã€è¦‹ã‹ãŸã€ã‚’èª¬æ˜Žã™ã‚‹ã€‚ perfã¨ã¯ä½•ã‹ Linuxã«ä»˜ã„ã¦ãã‚‹ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ã€‚ man perf ã«ã‚ˆã‚‹ã¨ã€ NAME ---- perf - Performance analysis tools for Linux ã¨ã€æ›¸ã„ã¦ã‚ã‚‹ã€‚åå‰ãŒã²ã©ã„ã®ã§ãªã‚“ã¨ã‹ã—ã¦ã»ã—ã„ã€‚ perf ã®ç‰¹å¾´ å€‹äººçš„ã«ã¯ã€æ‰‹è»½ã«ä½¿ãˆã‚‹ã®ãŒç´ æ™´ã‚‰ã—ã„ã¨æ€ã†ã€‚ 2.6.31ä»¥é™ã‚«ãƒ¼ãƒãƒ«ã«æ¨™æº–ã§ä»˜ã„ã¦ã‚‹ã€‚(Ubuntuã ã¨linux-tools-common(TODO:ã‚ã¨ã§ç¢ºèª)ã§å…¥ã‚‹ã¯ãš) ç‰¹æ®Šãªè¨å®šãŒå¿…è¦ç„¡ãã€
mrkn 2017/01/24
performance_analysis

profiling

perf

linux
ãƒªãƒ³ã‚¯
Delete duplicate word "long long" in Introduction by AlonsoIbarra Â· Pull Request #335 Â· torvalds/linux
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mrkn 2016/11/28
long long

linux

github

pull_request
ãƒªãƒ³ã‚¯
Dockerã€OCI ã‚„ã‚ã‚‹ã£ã¦ã‚ˆ : é©å‘½ã®æ—¥ã€… ãã®ï¼’
é€±æœ«ã®Twitterã®å¿œé…¬ãŒé¢ç™½ã‹ã£ãŸã®ã§ãƒ¡ãƒ¢ ã‚¿ã‚¤ãƒˆãƒ«ã¯ã‚‚ã¡ã‚ã‚“ã€Œæ¡å³¶ã€éƒ¨æ´»ã‚„ã‚ã‚‹ã£ã¦ã‚ˆã€ã®ãƒ‘ã‚¯ãƒªã§ã™ãŒã€ã‚ãŸã—ã¯ã“ã‚Œè¦‹ãŸã“ã¨ãªã„ã§ã™ã€‚ Kelsey Hightower ï¼ˆGoogleã®Kubernetesã®ä¸ã®äººï¼‰ ãŒã¾ãšç‡ƒæ–™æŠ•ä¸‹ There are many application platforms that support Docker images without the Docker daemon. Which one was first I have no idea. â€” Kelsey Hightower (@kelseyhightower) 2016å¹´7æœˆ28æ—¥ Dockerã‚¢ãƒ—ãƒªå‹•ã‹ã™ã®ã£ã¦ã‚‚ã†Dockerç´”æ£ã‚¨ãƒ³ã‚¸ãƒ³ã„ã‚‰ãªã„ã‚ˆããƒ¼ ã‚‚ã¡ã‚ã‚“ï¼ˆDocker CTOã®ï¼‰ Solomon Hykes ã¯åè«– @kelseyhightower pseudo-support.
mrkn 2016/08/01
æ—©ã Linux Kernel Watch ã‚’å†é–‹ã•ã›ã¦æ¬²ã—ã„

linux

docker
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ãƒ”ã‚¯ã‚·ãƒ–æ ªå¼ä¼šç¤¾ Advent Calendar 2015ã®3æ—¥ç›®ã®è¨˜äº‹ã«ãªã‚Šã¾ã™ã€‚ ã„ã¾ç”»åƒå‡¦ç†ã®ä»•äº‹ã‚’ã—ã¦ã„ã‚‹ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã® saturday06 ã§ã™ã€‚ æœ€è¿‘ä»•äº‹ã§ã‚¢ã‚»ãƒ³ãƒ–ãƒ©ã«è§¦ã‚ŒãŸã®ã§ã€ã“ã®è¨˜äº‹ã§ã¯ãã‚Œã«é–¢é€£ã—ã¦è¶£å‘³ã§ã‚„ã£ãŸé–‹ç™ºã«ã¤ã„ã¦æ›¸ãã¾ã™ã€‚ æœªæ¥ã®CPUã®æ©Ÿèƒ½ãƒ»AVX512å‘½ä»¤ AVX512å‘½ä»¤ã¨ã„ã†ã€512ãƒ“ãƒƒãƒˆã®ãƒ‡ãƒ¼ã‚¿ã‚’ã„ã£ãºã‚“ã«æ‰±ã†ã“ã¨ãŒã§ãã‚‹CPUã®æ©Ÿèƒ½ãŒIntelã‹ã‚‰ç™ºè¡¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ AVX-512 instructions | IntelÂ® Developer Zone AVX-512 - Wikipedia, the free encyclopedia AVX512å‘½ä»¤ã¯ã„ã‚ã‚†ã‚‹SIMDã¨å‘¼ã°ã‚Œã‚‹ç³»åˆ—ã®å‘½ä»¤ã§ã™ã€‚æœ€è¿‘ç”»åƒå‡¦ç†ç³»ã®ä»•äº‹ã§SIMDãŒå¿…è¦ã«ãªã£ãŸã‚Šã€ã¾ãŸ7æœˆã«ç¤¾å†…ã§è¡Œã‚ã‚ŒãŸå‹‰å¼·ä¼š ã§ã‚‚SIMDæŠ¼ã—ã ã£ãŸãŸã‚ã€æœ€æ–°ãªå‘½ä»¤ã§ã‚ã‚‹AVX512ã‚‚ã¡ã‚‡ã£ã¨è¦‹ã¦ã„
mrkn 2016/05/06
ãŸã®ã—ã„

linux

avx-512
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mrkn 2015/08/07
taskset ã‚³ãƒžãƒ³ãƒ‰ãªã‚“ã¦ã‚ã‚‹ã‚“ã

linux
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mrkn 2014/10/08
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mrkn 2014/09/29
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mrkn 2014/07/02
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mrkn 2014/05/11
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mrkn 2014/03/09
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mrkn 2014/02/23
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mrkn 2014/01/31
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mrkn 2013/07/17
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Kernel-Based X11 Server Claims 2x Performance Over X.Org - Phoronix
Kernel-Based X11 Server Claims 2x Performance Over X.Org Written by Michael Larabel in X.Org on 24 June 2013 at 06:37 PM EDT. 45 Comments MicroXwin is an X.Org Server alternative for an X Windows System implementation for Unix/Linux desktop. The developers behind MicroXwin are claiming that by implementing their X Server in the kernel they are getting a 2x performance advantage while using less me
mrkn 2013/06/25
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Linux ã«ã¯è¤‡æ•°ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãŒã‚ã‚Šã¾ã™ï¼Žã“ã‚Œã‚‰ã«ã¯ï¼Œä»•æ§˜ã¨ã—ã¦ã®æ©Ÿèƒ½å·®ã®ä»–ã«ï¼Œå“è³ªãƒ»å®‰å®šåº¦ã«é–¢ã—ã¦å¤§ããªå·®ãŒã‚ã‚‹ã¨è€ƒãˆã‚‰ã‚Œã¦ã„ã¾ã™ï¼Ž ä»Šå›žã¯ï¼Œãã®ã‚ãŸã‚Šã‚’å®šé‡çš„ã«åˆ†æžã—ãŸè«–æ–‡ã‚’ã”ç´¹ä»‹ï¼Ž A Study of Linux File System Evolution [ã‚ãƒ£ãƒƒã‚·ãƒ¥] https://www.usenix.org/conference/fast13/study-linux-file-system-evolution èª¿æŸ»ã®å¯¾è±¡ã¯ï¼ŒXFS/Ext4/Btrfs/Ext3/Reiser/JFS ã® 6 ã¤ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ï¼Žã“ã‚Œã‚‰ã«ã¤ã„ã¦ï¼ŒLinux 2.6.0 (Dec â€™03) ã‹ã‚‰ 2.6.39 (May â€™11) ã®é–“ã«å–ã‚Šè¾¼ã¾ã‚ŒãŸ 5,079 å€‹ã®ãƒ‘ãƒƒãƒã‚’åˆ†æžã—ã¦ã„ã¾ã™ï¼Ž ãƒ‘ãƒƒãƒã®ç¨®é¡ž ã¾ãšï¼Œãƒ‘ãƒƒãƒã‚’æ¬¡ã® 5 ç¨®é¡žã«åˆ†é¡žã—ã¦ã„ã¾ã™ï¼Ž Bug ãƒã‚°ã®ä¿®æ£ï¼Ž Reli
mrkn 2013/04/09
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