[B! GC] torazukaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

torazuka id:torazuka

GCã«é–¢ã™ã‚‹torazukaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (13)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

ã€ŒJavaã®é‰±è„ˆã€ã§JVMã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®è¨˜äº‹ã‚’æ›¸ãã¾ã—ãŸ | ã•ã«ã‚ã‚‰ãš
WEB+DB PRESS ã® Vol.82 ã«ã€ã‹ãªã‚Šæ°—åˆã„ã®å…¥ã£ãŸ JVM ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®è¨˜äº‹ã‚’æ›¸ã„ãŸã®ã§ã€æ˜¯éžèªã‚“ã§é ‚ããŸã„ã€‚ 2014/8/23 ç™ºå£²ã§ã™ã®ã§ã€æ—¢ã«è³¼å…¥é ‚ã„ã¦ã‚‹æ–¹ã‚‚å¤šã„ã¨æ€ã„ã¾ã™ã€‚ é›»åæ›¸ç±ç‰ˆã‚‚ã‚ã‚Šã¾ã™ã®ã§ç‰©ç†çš„ãªåª’ä½“ã«èˆˆå‘³ãŒãªã„æ–¹ã¯ PDF ã‚’è²·ã£ã¦ä¸‹ã•ã„ã€‚ WEB+DB PRESS Vol.82@Gihyo Digital Publishingä»Šå›žã®è¨˜äº‹ã«ãŠã‘ã‚‹å¯¾è±¡èªè€…ã«ã¤ã„ã¦#ä»Šå›žã®è¨˜äº‹ã¯ã€ã‚¿ãƒ¼ã‚²ãƒƒãƒˆã¨ã—ã¦ Java ã«ä½™ã‚Šæ™‚é–“ã‚’ã‚³ãƒŸãƒƒãƒˆã—ã¦ã„ãªã„ã‘ã©ã‚‚ä¾¿åˆ©ãªã®ã§ JVM ä¸Šã§å‹•ãã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ã‚¦ãƒƒã‚«ãƒªé‹ç”¨ã—ã¦ã„ã‚‹äººã‚’ã‚¤ãƒ¡ãƒ¼ã‚¸ã—ãªãŒã‚‰æ›¸ãã¾ã—ãŸã€‚ ä¾‹ãˆã°ã€OSS ã‚‚ã®ã ã¨ Hadoop ã‚„ ZooKeeperã€Lucene ã‚„ Solrã€å•†ç”¨è£½å“ã ã¨ Stash ã¨ã‹ JIRA ã¨ã‹ confluence ã¨ã‹ãã†ã„ã†ã‚‚ã®ã§ã™ãã€‚ åƒ•ã®è¦³æ¸¬ç¯„å›²ã ã¨ã€PHP ã‚„
torazuka 2014/08/25
JVMã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ä¸€è¦§åŒ–ã™ã‚‹ãƒ„ãƒ¼ãƒ«ã™ã”ã„ã€‚

jvm

GC

java
ãƒªãƒ³ã‚¯
Useful JVM Flags - Part 8 (GC Logging)
The last part of this series is about garbage collection logging and associated flags. The GC log is a highly important tool for revealing potential improvements to the heap and GC configuration or the object allocation pattern of the application. For each GC happening, the GC log provides exact data about its results and duration. -XX:+PrintGC The flag -XX:+PrintGC (or the alias -verbose:gc) acti
torazuka 2014/04/13
jvm

gc
ãƒªãƒ³ã‚¯
JVMçš„ãªä½•ã‹@JVM Operation Casual Talk
4. ãƒ’ãƒ¼ãƒ—ã‚¹ãƒˆãƒ©ã‚¯ãƒãƒ£ã®åŸºæœ¬ äºˆ ç´„ äºˆ ç´„ äºˆ ç´„ Permanent GeneraAon (Class, ã‚·ã‚¹ãƒ†ãƒ ) Old GeneraAon Eden Young GeneraAon From(S0) TO(S1) â€¢â€¯ Young Â Generation â€¢â€¯ æ–°è¦ã§â½£ç”Ÿæˆã•ã‚ŒãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®â¼Šå…¥ã‚‹ã‚¹ãƒšãƒ¼ã‚¹ â€¢â€¯ Eden, Â Survivor(S0 Â and Â S1) â€¢â€¯ Old Â Generation â€¢â€¯ ã‚ˆã‚Šâ½£ç”Ÿå˜æœŸé–“ã®â»‘â¾§é•·ã„ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®â¼Šå…¥ã‚‹ã‚¹ãƒšãƒ¼ã‚¹ â€¢â€¯ Permanent Â Generation(Java8ã§Metaspaceã¸) â€¢â€¯ ã‚¯ãƒ©ã‚¹ã‚„ãƒ¡ã‚½ãƒƒãƒ‰/Code Â CacheãŒâ¼Šå…¥ã‚‹ã‚¹ãƒšãƒ¼ã‚¹ 5. ãƒžã‚¤ãƒŠãƒ¼GC äºˆ ç´„ äºˆ ç´„ äºˆ ç´„ Permanent GeneraAon (Class, ã‚·ã‚¹ãƒ†ãƒ ) Old GeneraAon Eden Young Ge
torazuka 2014/04/08
åˆ†ã‹ã‚Šã‚„ã™ã‹ã£ãŸã§ã™ã€‚

jvm

memory

GC
ãƒªãƒ³ã‚¯
Norikraç‰Javaã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®GCã‚’ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã—ãŸã„ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article?
torazuka 2014/04/07
jvm

GC

tuning
ãƒªãƒ³ã‚¯
Garbage First Garbage Collector (G1 GC) - Migration to, Expectations and Advanced Tuning
Learn what you need to know to experience nirvana in the evaluation of G1 GC even if your are migrating from Parallel GC to G1, or CMS GC to G1 GC You also get a walk through of some case study data G1 GCRead less
torazuka 2014/03/28
gc

java
ãƒªãƒ³ã‚¯
Java 7 CMS GCã®åŸºæœ¬çš„ãªæƒ…å ±ã®æ•´ç† - nekop's blog
ãƒãƒƒãƒå‡¦ç†ãªã©ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆé‡è¦–ã®ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¯ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã®ãƒ‘ãƒ©ãƒ¬ãƒ«GCã§è‰¯ã„ãŒã€Java EEã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒãªã©ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ é‡è¦–ã®ã‚‚ã®ã‚„Hadoopãªã©ã®ã‚¯ãƒ©ã‚¹ã‚¿ç³»ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§æ»æ´»ç›£è¦–ã«å¼•ã£æŽ›ã‚‹ç³»ãªã©ã®stop the worldã‚’ãªã‚‹ã¹ãé¿ã‘ãŸã„ã„ã‚ã‚†ã‚‹ã‚µãƒ¼ãƒç³»ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚’é‹ç”¨ã™ã‚‹å ´åˆã«ã¯ã€UseConcMarkSweepGCã‚’ä»˜ä¸Žã—ã¦åœæ¢æ™‚é–“ã®çŸã„CMS GCã‚’ä½¿ã†ã€‚ãã®å ´åˆã«CMSã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã«è¸ã¿è¾¼ã‚‚ã†ã¨ã™ã‚‹ã¨ãªã‚“ã ã‹é›£ã—ã„è¨˜è¿°ãŒã„ã£ã±ã„ã§è‹¥å¹²å›°ã‚‹ã®ã§ã€ç°¡å˜ãªã‚¬ã‚¤ãƒ‰ã‚’ãƒ¡ãƒ¢ã¨ã—ã¦æ›¸ã„ã¦ãŠãã€‚ å¯¾è±¡ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ä»¥ä¸‹ã€‚ $ java -version java version "1.7.0_51" OpenJDK Runtime Environment (fedora-2.4.5.1.fc20-x86_64 u51-b31) OpenJDK 64-Bit Serve
torazuka 2014/03/27
GC

java
ãƒªãƒ³ã‚¯
GC - GCã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ è©³ç´°è§£èª¬ - livedoor Wikiï¼ˆã‚¦ã‚£ã‚ï¼‰
GCã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ è©³ç´°è§£èª¬ æ—¥æœ¬èªžã®è³‡æ–™ãŒã™ããªã„GCã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã«ã¤ã„ã¦è©³ç´°ã«è§£èª¬ã—ã¾ã™ ãƒˆãƒƒãƒ—ãƒšãƒ¼ã‚¸ãƒšãƒ¼ã‚¸ä¸€è¦§ãƒ¡ãƒ³ãƒãƒ¼ç·¨é›† GC æœ€çµ‚æ›´æ–°ï¼š author_nariÂ 2010å¹´03æœˆ14æ—¥(æ—¥) 20:47:11å±¥æ´ Tweet ã“ã®WikiãŒç›®æŒ‡ã™æ‰€ GCã¨ã¯ï¼Ÿ GCã‚’å¦ã¶å‰ã«çŸ¥ã£ã¦ãŠãäº‹ å®Ÿè¡Œæ™‚ãƒ¡ãƒ¢ãƒªæ§‹é€ åŸºæœ¬ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ç·¨ Reference Counter Mark&Sweep Copying å¿œç”¨ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ç·¨ IncrementalGC ä¸–ä»£åˆ¥GC ã‚¹ãƒŠãƒƒãƒ—ã‚·ãƒ§ãƒƒãƒˆåž‹GC LazySweep TwoFinger Lisp2 Partial Mark and Sweep -Cycle Collection- Mostly Parallel GC train gc MostlyCopyingGC(Bartlett 1989) TreadmillGC(Barker 1992) è£œè¶³
torazuka 2014/01/01
GC

memory

programming
ãƒªãƒ³ã‚¯
Grid Dynamics Blog
Explore 10 pioneering AI trends, uncover the power of generative AI, and witness how Grid Dynamics is spearheading innovation.
torazuka 2013/11/09
GC

jvm

hotspot
ãƒªãƒ³ã‚¯
ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã¨ã¯ä½•ã‹ - kuenishi's blog
ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã«æ‚©ã¾ã•ã‚Œã¦ã„ã‚‹æŠ€è¡“è€…ã¯å¤šã„ã ã‚ã†ã€‚ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ãŒå«Œã§GCã¨ã„ã†æŠ€è¡“ãŒé–‹ç™ºã•ã‚ŒãŸã¨ã„ã£ã¦ã‚‚éŽè¨€ã§ã¯ãªã„ã—ã€æ´å²çš„ã«ã¯C++ã‹ã‚‰Javaã¸ã‚·ãƒ•ãƒˆãŒèµ·ããŸå¤§ããªç†ç”±ã®ã²ã¨ã¤ã¨ã„ã£ã¦ã„ã„ã€‚Unixç³»ã®ç°¡å˜ãªå®šç¾©ã§ã„ãˆã°ã€ãƒ’ãƒ¼ãƒ—é ˜åŸŸã‚’æŒ‡ã™ãƒã‚¤ãƒ³ã‚¿ï¼ˆã‚¢ãƒ‰ãƒ¬ã‚¹ï¼‰ã‚’ãƒã‚¹ãƒˆã—ã¦ã—ã¾ãˆã°ãã®ãƒ¡ãƒ¢ãƒªã¯ã‚‚ã†æ¼ã‚ŒãŸã¨ã„ã£ã¦ã‚ˆã„ã€‚ãŸã¨ãˆã°ã“ã†ã„ã£ãŸã‚³ãƒ¼ãƒ‰ã ã€‚ struct { int i; char c; } spam; int main(){ void* p; int i; for(i=0; i<1024; ++i){ p = malloc(sizeof(struct spam)); } pause(); } ã“ã®ã‚³ãƒ¼ãƒ‰ã§ã¯pause(3)ã®æ™‚ç‚¹ã§ç´„5KBã®ãƒ¡ãƒ¢ãƒªãŒæ¼ã‚Œã¦ã„ã‚‹ã€‚free(3)ã‚’ä½¿ãˆã°ãƒ¡ãƒ¢ãƒªã‚’OSã«è¿”å´ã§ãã‚‹ãŒã€ã‚¢ãƒ‰ãƒ¬ã‚¹ãŒåˆ†ã‹ã‚‰ãªã„ã®ã§è¿”å´ã§ããªã„ã€‚ ã¨ã“ã‚ãŒã€ã“ã“ã§ã„ã„ãŸã„ã®ã¯ã€ãƒ¡ãƒ¢ãƒª
torazuka 2013/04/24
"ãã®ãƒ¡ãƒ¢ãƒªã‚„ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãŒå¿…è¦ã‹ä¸è¦ã‹ã€è¨è¨ˆè€…ã‚„é–‹ç™ºè€…ã§ãªã„ã¨åˆ¤æ–ã§ããªã„""ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã®ãƒ¬ãƒ“ãƒ¥ãƒ¼ã‚„é•·æœŸè€ä¹…è©¦é¨“*1ã‚’é€šã—ã¦ãƒ¡ãƒ¢ãƒªãŒå¤ªã£ã¦ã„ã‹ãªã„ã“ã¨ã‚’äººé–“ã®æ‰‹ã§è¦‹ã¤ã‘å‡ºã™ã—ã‹ãªã„"

programming

memory

GC
ãƒªãƒ³ã‚¯
é€£è¼‰: IBM Watson Workspace #é¬¼ã‚ã‹ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³é–‹ç™º: ç¬¬ 7 å›ž: IBM Watson Workspace ã§ AI ã‚’åˆ©ç”¨ã—ãŸã‚¢ãƒ—ãƒªé€£æºã®å®Ÿç¾ #é¬¼ã‚ã‹ è§£èª¬ï¼ˆå‰ç·¨ï¼‰
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
torazuka 2012/12/11
javascript

GC

programming
ãƒªãƒ³ã‚¯
Java verbosegc output tutorial
Verbose output for the Java VM and garbage collection process has been around for quite a long time but I often get questions on how to read and interpret the output. This short article will provide with a detailed tutorial on how to enable and read Java 7 HotSpot VM verbose gc output data.
torazuka 2012/10/11
java

gc
ãƒªãƒ³ã‚¯
visualgc - GCè¦–è¦šåŒ–ãƒ„ãƒ¼ãƒ«
Java Is the Language of Possibilities Java is powering the innovation behind our digital world. Harness this potential with Java resources for student coders, hobbyists, developers, and IT leaders.
torazuka 2011/03/26
GC

java

reference
ãƒªãƒ³ã‚¯
GCæ”¹å–„ã«å½¹ç«‹ã¤æ–°ã—ã„JVMãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ | é–¢å£å®å¸ã®Luceneãƒ–ãƒã‚°
ä¸€å®šæœŸé–“æ›´æ–°ãŒãªã„ãŸã‚åºƒå‘Šã‚’è¡¨ç¤ºã—ã¦ã„ã¾ã™
torazuka 2011/03/18
java

jvm

GC
ãƒªãƒ³ã‚¯
1