[B! GC] oza_x86ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

oza id:oza_x86

GCã«é–¢ã™ã‚‹oza_x86ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (14)

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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
oza_x86 2014/04/08
. @shot6 å…ˆç”Ÿã® GC æˆ¦ç•¥è¬›åº§

JVM

GC
ãƒªãƒ³ã‚¯
G1GCã®ã¤ã‹ã„ã©ã“ã‚ãƒ¡ãƒ¢ - nekop's blog
ä»¥ä¸‹ã®ç’°å¢ƒã¨ãƒ†ã‚¹ãƒˆã§CMSã¨G1GCã‚’æ¯”è¼ƒã—ã¦ã¿ãŸã€‚ã‹ãªã‚Šæ€¥ãŽã§ã‚„ã£ãŸã®ã§é–“é•ã£ã¦ã„ã‚‹å¯èƒ½æ€§ãŒå¤šå°‘ã‚ã‚‹ã€‚ 16 cores, 32GB mem -Xms24g -Xmx24g 8 instances Infinispan 6.0.3.Final DIST cache, put 4GB data (1KB entry * 2M, 2GB data with one backup copy, 2GB * 2 = 4GB) CMS: -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=30 G1GC: -XX:+UseG1GC -XX:G1HeapRegionSize=16m -XX:InitiatingHeapOccupancyPercent=30 $ java -XX:+UseG1GC -XX:+PrintFlagsFinal
oza_x86 2014/04/08
jvm

G1GC

GC
ãƒªãƒ³ã‚¯
Understanding GC pauses in JVM, HotSpot's CMS collector.
Understanding GC pauses in JVM, HotSpot's CMS collector. Concurrent Mark Sweep (CMS) is one of HotSpot JVM low pause garbage collectors. CMS can do most of its work for reclaiming memory concurrently with application (without stopping it). But still it requires few stop-the-world pauses to make its work. This article will explain nature of these pauses and how to minimize them. HotSpotâ€™s CMS is a
oza_x86 2013/12/02
â€œUnderstanding GC pauses in JVM, HotSpot's CMS collector.â€

Java

GC

JVM
ãƒªãƒ³ã‚¯
Netty 4 at Twitter: Reduced GC Overhead
At Twitter, Netty (@netty_project) is used in core places requiring networking functionality. For example: Finagle is our protocol agnostic RPC system whose transport layer is built on top of Netty, and it is used to implement most services internally like Search TFE (Twitter Front End) is our proprietary spoon-feeding reverse proxy which serves most of public-facing HTTP and SPDY traffic using Ne
oza_x86 2013/10/16
netty

Twitter

java

GC
ãƒªãƒ³ã‚¯
Javaã®ãƒ¡ãƒ¢ãƒªç®¡ç†
æœ¬æ—¥ã®ã‚«ã‚¯ãƒ†ãƒ«ã¯ã€ŒJavaã®ãƒ¡ãƒ¢ãƒªç®¡ç†ã€ã§ã™ã€‚ ãƒã‚¿å…ƒã¯ã‹ã¤ã®ã‚Šã•ã‚“ã®Blogã§ã™ã€‚ GCã«ã¤ã„ã¦å‹˜é•ã„ã—ã¦ã„ã‚‹äººãŒçµæ§‹å¤šã„ Javaã¨ã„ã†ã¨GC(ã‚¬ãƒ¼ãƒ™ãƒƒã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³)ã«ã‚ˆã£ã¦ä¸è¦ã¨ãªã£ãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãŒå›žåŽã•ã‚Œã‚‹ä»•çµ„ã¿ã«ãªã£ã¦ã„ã¾ã™ã®ã§ã€ä¸€èˆ¬ã®ãƒ—ãƒã‚°ãƒ©ãƒžã¯ãƒ¡ãƒ¢ãƒªã®ç¢ºä¿ã€è§£æ”¾ã«ã¤ã„ã¦è€ƒãˆã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã›ã‚“ã€‚ ãŸã ã—ã€ãƒ—ãƒãƒ•ã‚§ãƒƒã‚·ãƒ§ãƒŠãƒ«ãªãƒ—ãƒã‚°ãƒ©ãƒžã®æ–¹ã¯ä¸€èˆ¬ã®ãƒ—ãƒã‚°ãƒ©ãƒžã®åˆ†ã¾ã§èƒŒè² ã„è¾¼ã‚“ã§è€ƒãˆã¦ã‚‚ã‚‰ã†å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ Cè¨€èªžã®ã‚ˆã†ã«ãƒ¡ãƒ¢ãƒªã®å‰²ã‚Šå½“ã¦ã¨è§£æ”¾ã‚’ç›´æŽ¥ç®¡ç†ã™ã‚‹ã“ã¨ã¯ã‚ã‚Šã¾ã›ã‚“ãŒã€ã¾ã£ãŸãåˆ¥ç¨®ã®ãƒ¡ãƒ¢ãƒªç®¡ç†ãŒå¿…è¦ã¨ãªã£ã¦ãã¾ã™ã€‚ å‚ç…§ã®ç¨®é¡ž ã€Œè¦ã™ã‚‹ã«ã€å‚ç…§ãŒãªããªã‚Œã°GCã«å›žåŽã•ã‚Œã‚‹ã€å‚ç…§ãŒã‚ã‚Œã°å›žåŽã•ã‚Œãªã„ã€ãã‚Œã ã‘ã®ã“ã¨ã ã‚ã†ï¼Ÿã€ ã“ã†ãŠã£ã—ã‚ƒã‚‹ãŠå®¢ã•ã‚“ã¯æ²¢å±±ã„ã‚‰ã£ã—ã‚ƒã„ã¾ã™ã€‚ã§ã¯ã€å‚ç…§ã«ã‚‚ç¨®é¡žãŒã‚ã‚‹ã“ã¨ã‚’ã”å˜ã˜ã§ã™ã‹ï¼Ÿ å¼·ã„å‚ç…§ (strong reference) ã‚½ãƒ•ãƒˆå‚ç…§
oza_x86 2013/07/30
Java

GC
ãƒªãƒ³ã‚¯
PhantomReference (Java Platform SE 7 )
oza_x86 2013/07/30
Java

GC
ãƒªãƒ³ã‚¯
Azul Systems Launches Open Initiative for Improving Managed Runtimes | Azul Systems: Run, Scale, Simplify Your Java Application Platform
Join Azul and industry-leading Java luminaries for an engaging FREE virtual event celebrating 30 years of Java!
oza_x86 2012/12/05
GC
ãƒªãƒ³ã‚¯
Java HotSpot Garbage Collection
Introduction The Garbage-First (G1) garbage collector is fully supported in Oracle JDK 7 update 4 and later releases. The G1 collector is a server-style garbage collector, targeted for multi-processor machines with large memories. It meets garbage collection (GC) pause time goals with high probability, while achieving high throughput. Whole-heap operations, such as global marking, are performed co
oza_x86 2012/12/05
GC

G1GC
ãƒªãƒ³ã‚¯
Engadget | Technology News & Reviews
My iPhone 11 is perfectly fine, but the new buttons on the iPhone 16 are compelling
oza_x86 2010/12/19
adget]

GC
ãƒªãƒ³ã‚¯
GCæœ¬èªæ›¸ä¼š - å…¼é›‘è¨˜
è¨˜æ†¶ã‚’ãƒ€ãƒ³ãƒ—ã€‚ã©ã‚Œã‚‚åˆ¥ã«æœ¬å½“ã«æ£ã—ã„è°è«–ã§ã‚ã‚‹ã‹ã¯ä¸æ˜Žã€‚ã‚‚ã£ã¨é‡è¦ãªè«–ç‚¹ã¨ã‹ã‚ã£ãŸã‚‰æ•™ãˆã¦ã„ãŸã ã‘ã‚Œã°ã¨ã¦ã‚‚ã†ã‚Œã—ã„ã§ã™ã€‚ ã€ŒGCã£ã¦ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆvsãƒ¬ã‚¤ãƒ†ãƒ³ã‚·ã£ã¦ã‚ˆãè¨€ã†ã‚ã‘ã§ã™ã‘ã©ã€ ã€Œå®Ÿéš› GC ã™ã‚‹è¨€èªžã§ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆæ¬²ã—ã„ã¨ã‹æ€ã£ã¦ã‚‹ãƒ¦ãƒ¼ã‚¶ã¯ã„ã‚‹ã‚“ã§ã™ã‹ããƒ¼ã€‚ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã¯ã‹ã‚‹ãªã‚‰ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆã ã‚ã†ã‘ã©ããˆã€ çµ„ã¿è¾¼ã¿ç³»ã®äººãŒå¤šã„é–¢ä¿‚ã‚‚ã‚ã£ã¦ã‹ã€ã¿ã‚“ãªãƒ¬ã‚¤ãƒ†ãƒ³ã‚·ã®æ–¹ãŒâ€¦ã£ã¦æ„Ÿã˜ã¿ãŸã„ã ã£ãŸã€‚ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆãŒæ¬²ã—ã„å±€é¢ã¨ã—ã¦ã¯ Java ã§ãƒãƒƒãƒå‡¦ç†ã™ã‚‹æ™‚ã¨ã‹ã¯é€Ÿã„ã«è¶Šã—ãŸã“ã¨ã¯ãªã„çš„ãªã“ã¨ã‚’è¨€ã‚ã‚Œã¦ã€ã‚ã‚ã‚„ã£ã±ãã„ã†ã®ã‹ãªãã¨ã€‚ ãŸã ã€ãƒãƒƒãƒå‡¦ç†ã¨ã‹ã£ã¦åˆ¥ã« Java ã˜ã‚ƒãªãã¦ã‚‚ C++ ã§æ›¸ã„ã¦ã‚‚ãƒ¡ãƒ¢ãƒªç®¡ç†ã¨ã‹ãã‚“ãªå¤§å¤‰ã˜ã‚ƒãªã„ã‚‚ã®ãŒå¤šã„ã‚ˆã†ãªâ€¦ã¨ã„ã†ã“ã¨ã¨ã€ GC ã«ã‹ã‹ã£ã¦ã‚‹æ™‚é–“ã£ã¦ã¾ããã‚‚ãã‚‚å…¨ä½“ã‹ã‚‰è¦‹ã¦ãã‚“ãªã«å¤šãã¯ãªã„ã¯ãšã§ã€ãã“ãŒä»®ã« 2 å€é€Ÿãã¦ã‚‚ãªãƒ¼ã€ã¨ã¯æ€ã£ãŸã€‚
oza_x86 2010/04/25
GC æœ¬ã®ã¾ã¨ã‚ã¨ã‹ã€ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆvsãƒ¬ã‚¤ãƒ†ãƒ³ã‚·ã®è©±ã®è€ƒå¯Ÿã¨ã‹.

GC
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Amazon.co.jp: ã‚¬ãƒ™ãƒ¼ã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¨å®Ÿè£…: ä¸æ‘æˆæ´‹ (è‘—), ç›¸å·å…‰ (è‘—), ç«¹å†…éƒé›„ (èªã¿æ‰‹), ç«¹å†…éƒé›„ (ç›£ä¿®): æœ¬
oza_x86 2010/03/18
gc

Interpreter
ãƒªãƒ³ã‚¯
Garbage Collection: Algorithms for Automatic Dynamic Memory Management: æ´‹æ›¸: Richard Jones,Rafael Lins
oza_x86 2010/03/18
gc

Interpreter
ãƒªãƒ³ã‚¯
ã‚¬ãƒ™ãƒ¼ã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³
Ruby ã«ã¯ä½¿ã‚ã‚Œãªããªã£ãŸãƒ¡ãƒ¢ãƒªã‚’è‡ªå‹•çš„ã«æ¤œå‡ºã—è§£æ”¾ã—ã¦ãã‚Œã‚‹ ã‚¬ãƒ™ãƒ¼ã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã®æ©Ÿèƒ½ãŒã‚ã‚‹ã€‚ ã“ã®ç¯€ã§ã¯ã“ã®ã‚¬ãƒ™ãƒ¼ã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã®è©³ç´°ã‚’è¿½ã£ã¦ã‚†ãã€‚ ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ç®¡ç† Ruby ã® GC ã¯ Ruby ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ã¿ãŒå¯¾è±¡ã ã€‚ã‹ã¤ã€Ruby ãŒ ç”Ÿæˆã—ç®¡ç†ã—ã¦ã„ã‚‹ãƒ¡ãƒ¢ãƒªã«ãªã„ã¨ã„ã‘ãªã„ã€‚é€†ã«è¨€ã†ã¨ãƒ¦ãƒ¼ã‚¶ãŒå‹æ‰‹ã« å‰²ã‚Šã‚ã¦ãŸãƒ¡ãƒ¢ãƒªã¾ã§ã¯é¢å€’ã‚’ã¿ã¦ãã‚Œãªã„ã¨ã„ã†ã“ã¨ã ã€‚ãŸã¨ãˆã° ä»¥ä¸‹ã®é–¢æ•°ã¯ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã‚’èµ·ã“ã™ã€‚ void koreha_dame() { malloc(1024); /* ãƒ¡ãƒ¢ãƒªã‚’ã‚‚ã‚‰ã£ã¦ã¯æ¨ã¦ã‚‹ */ } ä¸€æ–¹ã§ä»¥ä¸‹ã®é–¢æ•°ã¯ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã‚’èµ·ã“ã•ãªã„ã€‚ void daijoubu() { rb_ary_new(); /* Ruby ã®é…åˆ—ã‚’ä½œã£ã¦ã¯æ¨ã¦ã‚‹ */ } Ruby ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¯ã‚ˆã†ã™ã‚‹ã« struct RVALUE ã ã£ãŸã‹ã‚‰ã€ã‚ªãƒ– ã‚¸ã‚§ã‚¯ãƒˆã®ç®¡ç†
oza_x86 2009/07/17
GC

Ruby
ãƒªãƒ³ã‚¯
A garbage collector for C and C++
Where to get the collector Platforms Scala ble multiprocessor versions Some collector details Further reading Current users Local links for this collector Local background Links Contacts, Updates, and Reporting Issues Translations of this page [ This is an updated version of the page formerly at http://www.hpl.hp.com/personal/Hans_Boehm/gc, and before that at http://reality.sgi.com/boehm/gc.html an
oza_x86 2009/07/15
[C/C++]Cç”¨ã®GC?ç¾æ™‚ç‚¹ã§ã¯æ„å‘³ä¸æ˜Ž. ãƒžã‚¯ãƒã‚’åˆ©ç”¨ã—ã¦ã„ã‚‹ã‚ˆã†ã ãŒ...?

GC
ãƒªãƒ³ã‚¯
1