[B! jvm] kimutanskã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

kimutansk id:kimutansk

jvmã«é–¢ã™ã‚‹kimutanskã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (34)

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jjugccc2018 app review postmortem
3. ã‚¢ã‚¸ã‚§ãƒ³ãƒ€ â€¢ è‡ªå·±ç´¹ä»‹ â€¢ ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã®èª¬æ˜Ž â€¢ ãƒ¬ãƒ“ãƒ¥ãƒ¼ã«ã¤ã„ã¦ â€“ ã©ã®ãƒ¬ãƒ™ãƒ«ã§ï¼Ÿ â€“ ã©ã†ã„ã†è¦³ç‚¹ã§ï¼Ÿ â€“ æŒ‡æ‘˜ãŒå¤šã„ã‚‚ã®/å…·ä½“çš„ãªå†…å®¹ â€¢ æ€§èƒ½å•é¡Œ â€“ JVMã®è©± â€“ JVMã®å¤–ã®è©± â€¢ éšœå®³ä¾‹ â€¢ ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã®è¦‹ã¤ã‘æ–¹ â€¢ è² è·è©¦é¨“ â€¢ ãŠã¾ã‘ 3 4. è‡ªå·±ç´¹ä»‹ â€¢ Name: Kiyotaka Suzuki â€¢ Twitter: @tamtam180 â€¢ Main works â€“ SquareEnix (5.5Y) â€¢ PlayOnline, FF-XIV, etc. â€“ SmartNews (4Yã€œ) â€¢ Cross-functional Expert Team â€“ Software Engineer â€“ åºƒå‘Š, å…¬å…± 4
kimutansk 2018/05/28
ãƒ¬ãƒ“ãƒ¥ãƒ¼è¦³ç‚¹ä¸€è¦§ã„ã„ã§ã™ãã€‚ã‚ã¨ã¯AWSã®HTTPé€šä¿¡åŒ–ãŒã§ãã‚‹ã®ã¯çŸ¥ã‚‰ãªã‹ã£ãŸã€‚ãã®å‘¨ã‚Šã®è² è·ãŒå¤§ãããªã£ãŸå ´åˆã¯æ§‹æˆæ¬¡ç¬¬ã§ã™ãŒè©¦ã—ã¦ã¿ã¾ã™ã‹ã€‚

jvm

ReVIEW
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fastthread.io
Java Thread Dump Analyzer Elevate JVM troubleshooting with fastThread, your intelligent thread dump analysis companion. Discover the industry's first machine learning-guided tool for seamless Java thread dump analysis. Detect and resolve JVM thread issues by harnessing AI Brilliance. Troubleshoot BLOCKED threads, Deadlocks, CPU spikes... Streamline thread dump analysis with automated REST API. Pro
kimutansk 2017/03/02
ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã‚¢ãƒƒãƒ—ã™ã‚‹ã¨ã€è§£æžã—ã¦æ€ªã—ã„ã®ã‚’å‡ºã—ã¦ãã‚Œã‚‹ï¼Ÿãã®æ–¹å¼ãŒæ©Ÿæ¢°å¦ç¿’ã ã¨ãƒ»ãƒ»ãƒ»

jvm
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Native Memory Tracking in 7u40 â€“ Marcus Hirt
Since we donâ€™t have any nice NMT (Native Memory Tracking) MBean in HotSpot (yet), and therefore not in the JMC console, I thought Iâ€™d show how it can be done using command line arguments and JCMD. Please note that youâ€™ll get a 5-10% performance hit if you enable this. Step 1 â€“ Enabling NMT This is done by using the following command line: -XX:NativeM emoryTracking=[off|summary|detail] Where the dif
kimutansk 2016/12/30
OffHeapã¯è¦‹ãŸæ„Ÿã˜Pooled/Internal/Unknownã§ã™ã‹ãã€‚å€™è£œã¨ãªã‚Šãã†ãªã®ã¯ã€‚ã‚ã¨ã¯å®Ÿéš›è©¦ã—ã¦ã¿ã‚‹ã—ã‹ã‚ã‚Šã¾ã›ã‚“ã‹ã€‚

jvm

native
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OpenJDKã¯ä½¿ã„ç‰©ã«ãªã‚‹ã‹ï¼ŸOpenJDKã®å®Ÿéš›ã¨ä»Šå¾Œ ï¼ˆNTTãƒ‡ãƒ¼ã‚¿ ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹DAY 2015 Autumn è¬›æ¼”è³‡æ–™ï¼‰
â– NTTãƒ‡ãƒ¼ã‚¿ ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹DAY 2015 Autumn (2015/10/19 è¬›æ¼”è³‡æ–™ï¼‰ ã€ŽOpenJDKã¯ä½¿ã„ç‰©ã«ãªã‚‹ã‹ï¼Ÿ OpenJDKã®å®Ÿéš›ã¨ä»Šå¾Œã€ NTTã‚³ãƒ ã‚¦ã‚§ã‚¢æ ªå¼ä¼šç¤¾ æœ«æ°¸ ææ£ http://oss.nttdata.co.jp/hadoop/event/201510/ Read less
kimutansk 2016/12/19
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jvm

oss
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ãƒã‚¤ãƒ†ã‚£ãƒ–ãƒ»ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒˆãƒ©ãƒƒã‚ãƒ³ã‚°
ãƒã‚¤ãƒ†ã‚£ãƒ–ãƒ»ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒˆãƒ©ãƒƒã‚ãƒ³ã‚°(NMT)ã¯ã€Java HotSpot VMã®å†…éƒ¨ãƒ¡ãƒ¢ãƒªãƒ¼ä½¿ç”¨çŠ¶æ³ã‚’è¿½è·¡ã™ã‚‹Java HotSpot VMæ©Ÿèƒ½ã§ã™ã€‚NMTã®ã‚¹ã‚³ãƒ¼ãƒ—ã€NMTã‚’æœ‰åŠ¹ã«ã™ã‚‹æ–¹æ³•ã€ãŠã‚ˆã³ãã®ä»–ã®ä½¿ç”¨ã®è©³ç´°ã¯ã€ãƒã‚¤ãƒ†ã‚£ãƒ–ãƒ»ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒˆãƒ©ãƒƒã‚ãƒ³ã‚°ã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ NMTã§ã¯ã€éžJVMã‚³ãƒ¼ãƒ‰ã«ã‚ˆã‚‹ãƒ¡ãƒ¢ãƒªãƒ¼ã®å‰²å½“ã¦ã‚’è¿½è·¡ã—ãªã„ã®ã§ã€ãƒã‚¤ãƒ†ã‚£ãƒ–ãƒ»ã‚³ãƒ¼ãƒ‰ã®ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒªãƒ¼ã‚¯ã‚’æ¤œå‡ºã™ã‚‹ã«ã¯ã€ã‚ªãƒšãƒ¬ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒ»ã‚·ã‚¹ãƒ†ãƒ ã§ã‚µãƒãƒ¼ãƒˆã•ã‚ŒãŸãƒ„ãƒ¼ãƒ«ã®ä½¿ç”¨ãŒå¿…è¦ã«ãªã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ã€‚ æ¬¡ã®é …ã§ã¯ã€VMå†…éƒ¨ãƒ¡ãƒ¢ãƒªãƒ¼å‰²å½“ã¦ã®ãƒ¢ãƒ‹ã‚¿ãƒ¼ãŠã‚ˆã³VMãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒªãƒ¼ã‚¯ã®è¨ºæ–æ–¹æ³•ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ NMTã«ã‚ˆã‚‹ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒªãƒ¼ã‚¯ã®æ¤œå‡º VMå†…éƒ¨ãƒ¡ãƒ¢ãƒªãƒ¼ã‚’ãƒ¢ãƒ‹ã‚¿ãƒ¼ã™ã‚‹æ–¹æ³• NMTã®ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ã‚«ãƒ†ã‚´ãƒª 2.7.1 NMTã«ã‚ˆã‚‹ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒªãƒ¼ã‚¯ã®æ¤œå‡º ãƒ¡ãƒ¢ãƒªãƒ¼ãƒ»ãƒªãƒ¼ã‚¯ã‚’æ¤œå‡ºã™ã‚‹ã«ã¯ã€æ¬¡ã®æ‰‹é †ã‚’å®Ÿè¡Œã—ã¾ã™ã€‚ æ¬¡ã®ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤
kimutansk 2016/11/07
ã“ã†ã‚„ã£ã¦ãƒã‚¤ãƒ†ã‚£ãƒ–ã®åˆ©ç”¨çŠ¶æ³è¿½ãˆã¾ã™ã‹ã€‚OffHeapã¯ãƒ»ãƒ»Pooled Free Chunksã‚ãŸã‚Šï¼Ÿã©ã“ã«å…¥ã‚‹ã‹ãŒæ°—ã«ãªã‚‹ã¨ã“ã‚ã§ã™ãŒ

jvm

native
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JavaVMã‚’è«–ç†åˆ†å‰²ã—ãŸãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠä¸Šã§Javaã‚¢ãƒ—ãƒªã‚’å®Ÿè¡Œå¯èƒ½ã«ã€‚ã‚ªãƒ©ã‚¯ãƒ«ãŒã‚³ãƒ³ãƒ†ãƒŠæ©Ÿèƒ½ã‚’å®Ÿè£…ã—ãŸWebLogic Server 12c R2ã‚’ãƒªãƒªãƒ¼ã‚¹
JavaVMã‚’è«–ç†åˆ†å‰²ã—ãŸãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠä¸Šã§Javaã‚¢ãƒ—ãƒªã‚’å®Ÿè¡Œå¯èƒ½ã«ã€‚ã‚ªãƒ©ã‚¯ãƒ«ãŒã‚³ãƒ³ãƒ†ãƒŠæ©Ÿèƒ½ã‚’å®Ÿè£…ã—ãŸWebLogic Server 12c R2ã‚’ãƒªãƒªãƒ¼ã‚¹ 1ã¤ã®JavaVMã‚’ã€ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã«ã‚ˆã£ã¦è¤‡æ•°ã®ã€Œãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠã€ã«åŒºåˆ‡ã‚Šã€ãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠã”ã¨ã«åˆ¥ã€…ã®Javaã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’å®Ÿè¡Œã§ãã‚‹æ©Ÿèƒ½ã‚’å‚™ãˆãŸã€WebLogic Severã®æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã€ŒWebLogic Server 12c R2ã€ã®å›½å†…æä¾›ã‚’æ—¥æœ¬ã‚ªãƒ©ã‚¯ãƒ«ãŒé–‹å§‹ã—ã¾ã—ãŸã€‚ WebLogic Serverã¯ä¼æ¥å‘ã‘ã®Webã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒã§ã€Java EE 7ã«å®Œå…¨æº–æ‹ ã—ã¦ã„ã¾ã™ã€‚ ã‚³ãƒ³ãƒ†ãƒŠã§å®‰å…¨åˆ†é›¢ã€é›†ç´„çŽ‡ã¯å¾“æ¥ã®3å€ã€‚Dockerã«ã‚‚å¯¾å¿œ ãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠå†…ã®Javaã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¯ç®¡ç†ãƒ„ãƒ¼ãƒ«ã«ã‚ˆã£ã¦Zipã§ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã«ã—ã€åˆ¥ã®ãƒžã‚¤ã‚¯ãƒã‚³ãƒ³ãƒ†ãƒŠã¸ç°¡å˜ã«ç§»è¡Œã§ãã‚‹ãŸã‚ã€é–‹ç™ºç’°å¢ƒã‹ã‚‰ãƒ†ã‚¹ãƒˆç’°å¢ƒã€æœ¬ç•ªç’°å¢ƒã¸ã¨è¿…
kimutansk 2016/02/17
[JVM1ãƒ—ãƒã‚»ã‚¹ã®ä¸ã§è¤‡æ•°ã®ã‚³ãƒ³ãƒ†ãƒŠãŒèµ·å‹•ã™ã‚‹ã¨ã„ã†ã“ã¨ã§ã—ã‚‡ã†ã‹ï¼Ÿãƒ—ãƒã‚»ã‚¹ä¸ã®ã‚³ãƒ³ãƒ†ãƒŠãŒãƒ‡ã‚£ã‚¹ã‚¯ãƒªãƒ—ã‚¿ç‰å…±æœ‰ã§ãã‚Œã°ç„¡åœæ¢ã‚‚ã‚„ã‚Šã‚„ã™ããªã‚‹ã¨ã‹ãã†ã„ã†ãƒŽãƒªï¼Ÿ

jvm
ãƒªãƒ³ã‚¯
GCãƒ¡ãƒ¢ãƒªåˆå¿ƒè€…ã®æ–°å’ãŒScalaã§GCãƒ¡ãƒ¢ãƒªã‚’å‹‰å¼·ã—ã¦ã¿ãŸ | Scala Tech Blog
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kimutansk 2016/01/22
OffHeapã®æ–¹ãŒãƒ¡ãƒ¢ãƒªé‡ã®ã‚ªãƒ¼ãƒãƒ¼ãƒ˜ãƒƒãƒ‰ãŒå°‘ãªã„ã¨ã„ã†ã“ã¨è‡ªä½“ã¯æƒ³åƒã¤ãã¾ã™ãŒã€å®Ÿéš›ã©ã‚Œãã‚‰ã„é•ã†ã‚“ã§ã—ã‚‡ã†ãã€‚Stringã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãŒ40byteã¨ã‹ãƒ¡ã‚¿ãƒ‡ãƒ¼ã‚¿ãŒã‚ã‚‹ã®ãŒãªã„ãã‚‰ã„ï¼Ÿ

jvm

heap
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Tuning Java Garbage Collection for Apache Spark Applications - The Databricks Blog
Unified governance for all data, analytics and AI assets
kimutansk 2015/12/28
Sparkã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°å‰ã ã¨G1ãŒParallelã«åŠ£ã‚Šã¾ã™ãŒã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã™ã‚‹ã¨å®Ÿè¡Œæ™‚é–“åŠåˆ†è¿‘ãã«ãªã‚‹ã¨ã€‚G1ã¯ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°é …ç›®å¤šã„åˆ†ã€ä¼¸ã³ã—ã‚ã¯ãŠãŠã„ã¨ã„ã†ã“ã¨ã§ã™ã‹ã€‚

spark

JVM
ãƒªãƒ³ã‚¯
NTTãƒ‡ãƒ¼ã‚¿ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹DAY 2015 ã® ã€ŒOpenJDK ã¯ä½¿ã„ç‰©ã«ãªã‚‹ã®ã‹ï¼Ÿã€ ã¾ã¨ã‚
Yasumasa Suenaga @YaSuenag ã“ã®ã‚¤ãƒ™ãƒ³ãƒˆã§OpenJDKã‚’ä½¿ã†ã¨ã„ã„ã‚³ãƒˆãªã©ã‚’ãŠè©±ã•ã›ã¦ã„ãŸã ãã¾ã™ã€‚ã€ŒOpenJDKã£ã¦ã©ã†ã‚ˆï¼Ÿã€ã€Œã©ã†ã™ã‚Œã°é–‹ç™ºã«å‚åŠ ã§ãã‚“ã®ï¼Ÿã€ãªã©ç–‘å•ã‚’æŒãŸã‚Œã¦ã‚‹æ–¹ã€ãŠæ™‚é–“ãŒã‚ã‚Œã°ãœã²ï¼ twitter.com/NTTDATA_PR/staâ€¦ 2015-10-15 12:33:42 NTTãƒ‡ãƒ¼ã‚¿ åºƒå ±éƒ¨ @NTTDATA_PR 10æœˆ19æ—¥(æœˆ)ã€ŽNTTãƒ‡ãƒ¼ã‚¿Hadoopã‚¨ãƒ³ã‚¿ãƒ¼ãƒ—ãƒ©ã‚¤ã‚ºã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã‚»ãƒŸãƒŠãƒ¼ï¼ ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹DAY 2015 Autumnã€é–‹å‚¬ IHIæ§˜ã«ã‚ˆã‚‹Sparkæ´»ç”¨ã€ å›½å†…é‡‘èžã‚„EUéŠ€è¡Œã®äº‹ä¾‹ã€è£½é€ æ¥å‘ã‘IoTäº‹ä¾‹ãªã©ã‚’ã”ç´¹ä»‹ oss.nttdata.co.jp/hadoop/event/2â€¦ 2015-10-14 19:25:21
kimutansk 2015/10/20
ã€Œã‚³ã‚¢ãƒ€ãƒ³ãƒ—ã‹ã‚‰â€œã‚ãƒ¼ï¼ŒJIT ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®ãƒã‚°ã£ã½ã„â€ ã€ã¦ã€æ—¢ã«å¤‰æ…‹ï¼ˆè¤’ã‚è¨€è‘‰ï¼‰ãƒ»ãƒ»å®Ÿéš›ã«ä½¿ãˆã‚‹ã®ã¯ã‚„ã£ã¦ã¿ã¦å®Ÿæ„Ÿã¯ã—ã¦ã¾ã™ãŒã€‚

jdk

jvm
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single file mounts not respected by lstat and readlink in container Â· Issue #14220 Â· moby/moby
Description of probl em: Using -v to bind mount a file into a container does not appear to modify the behavior of lstat or readlink if the target path on the container already exists and is a symbolic link. This causes programs that use these system calls to continue seeing the file present in the container instead of the file on the host system. In our case this caused Java processes to incorrectl
kimutansk 2015/07/27
docker runã‚³ãƒžãƒ³ãƒ‰ã§ãƒ›ã‚¹ãƒˆã®localtimeã‚’ãƒžã‚¦ãƒ³ãƒˆã™ã‚‹ã¨ã‚³ãƒ³ãƒ†ãƒŠã§ã¯dateã‚³ãƒžãƒ³ãƒ‰ã¯ãƒ›ã‚¹ãƒˆã«è¿½éšã—ã¦ã‚‚Javaãƒ—ãƒã‚»ã‚¹ã¯è¿½éšã—ãªã„ã¨ã„ã†è©±ã€‚ã‚·ãƒ³ãƒœãƒªãƒƒã‚¯ã¯ä¸Šæ›¸ãã§ããªã„ã‹ã‚‰ï¼Ÿ

docker

jvm
ãƒªãƒ³ã‚¯
GitHub - LinkedInAttic/JTune: A high precision Java CMS optimizer
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kimutansk 2015/07/03
JVMã®CMSGCã®ã‚ªãƒ—ãƒ†ã‚£ãƒžã‚¤ã‚¶ãƒ»ãƒ»ï¼Ÿã€€è¨å®šãŒå›°é›£ãªG1GCãŒã‚ã‚‹ã¨ã‚ˆã‚Šã‚ã‚ŠãŒãŸã„ã§ã™ãŒã€ãã®ã†ã¡å¯¾å¿œã—ã¾ã™ã‹ãã€‚

jvm

cms
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CMS GC ãŠã•ã‚‰ã„ - unnamed
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kimutansk 2015/06/27
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kimutansk 2015/06/02
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kimutansk 2015/04/13
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kimutansk 2015/03/19
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perfomance
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Java Virtual Machine Code Generation and Optimization
kimutansk 2015/03/13
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kimutansk 2015/02/04
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mysql

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Re-Introduction: Concurrent Mark-Sweep Garbage Collection @ Japan JUG Conference.Read less
kimutansk 2014/11/18
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