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Linux: traffic controlã€€netem tc

net em ( tcã‚³ãƒžãƒ³ãƒ‰ ) ã®åŸºæœ¬çš„ãªä½¿ã„æ–¹ã€‚ tc ã‚³ãƒžãƒ³ãƒ‰ã§ã€é…å»¶ã€ãƒ‘ã‚±ãƒƒãƒˆãƒã‚¹ã€ãƒ‘ã‚±ãƒƒãƒˆã®é‡è¤‡ã€ãƒ‘ã‚±ãƒƒãƒˆã®åˆ°ç€é †ã‚’å¤‰ãˆã‚‹ã€ãªã©æ¨¡æ“¬ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ é…å»¶ã•ã›ã€WAN ã‚’æ¨¡æ“¬ã—ã€ãã®æ™‚ã®ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯æ©Ÿå™¨(ãƒ•ãƒãƒ¼ãƒ†ãƒ¼ãƒ–ãƒ«ã‚’ãŸã‚ãŸã¨ãã®æŒ™å‹•)ã‚„ã€SLA(é…å»¶ãŒ xxç§’ã ã¨ãƒ¦ãƒ¼ã‚¶é€ƒã’ã¡ã‚ƒã†ã ã‚ã†ãª)ãªã©ã®ãƒ†ã‚¹ãƒˆãŒã§ããã†ã€‚ ã‚ã¨ã€ãƒ‘ã‚±ãƒƒãƒˆã®åˆ°ç€é †ã‚’ã‹ãˆãŸã¨ãã«ã€ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚„Firewall ãŒã€å‡¦ç†ã§ãã‚‹ã‹ç¢ºèªã—ã¦ã¿ã‚‹ã¨ã‹ã€‚ ãƒ»delay : outgoing ã«å¯¾ã—ã¦ delay ã‚’è¨å®šã€€ ( WANã‚¨ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ ) 100ms ã® delay ã‚’ã‹ã‘ã‚‹ã€‚ [root@hat1-vm ~]# tc qdisc add dev eth0 root net em delay 100ms [root@hat1-vm ~]# tc qdisc show dev eth0 qdisc

dann 2012/02/16

network

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Haskell Performance Patterns

hello mum");a.close()},find_slide_number:function(e){var c=e.indexOf("#");if(c<0){return 0}var b=unescape(e.substr(c+1));var f=document.getElementById(b);if(!f){var d=/\((\d)+\)/;if(b.match(d)){var a=parseInt(b.substring(1,b.length-1));if(a>this.slides.length){a=1}if(--a<0){a=0}return a}d=/\[(\d)+\]/;if(b.match(d)){var a=parseInt(b.substring(1,b.length-1));if(a>this.slides.length){a=1}if(--a<0){a=

dann 2012/02/16

haskell

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The Eclipse Jetty Project :: Eclipse Jetty

Eclipse Jetty provides a highly scala ble and memory-efficient web server and servlet container, supporting many protocols such as HTTP/3,2,1 and WebSocket. Furthermore, the project offers integrations with many other techno logies, such as OSGi, JMX, JNDI, JAAS, etc. These components are open source and are freely available for commercial use and distribution under both the EPL2 and Apache2 license

dann 2012/02/16

ãƒªãƒ³ã‚¯

1.05BN QPM using MySQL Cluster 7.2

My name is Mikael Ronstrom and I work for Hopsworks AB as Head of Data. I also assist companies working with NDB Cluster as self-employed consultant. I am a member of The Church of Jesus Christ of Latter Day Saints. I can be contacted at mikael dot ronstrom at gmail dot com for NDB consultancy services. The statements and opinions expressed on this blog are my own and do not necessarily represent

dann 2012/02/16

mysql

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JavaScript.Next

Developers Summit 2012 ã§ä½¿ç”¨ã—ãŸã‚¹ãƒ©ã‚¤ãƒ‰ å¾ŒåŠã‚’æŠœãå‡ºã—å°‘ã—æ›´æ–°ã—ãŸã‚‚ã®ã¯ã“ã¡ã‚‰: http://www.slideshare.net/dynamis/kanazawajsnextRead less

dann 2012/02/16

javascript

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Top 4 Software Based IIS Server Performance Tips

Supercharge your remote IT support and turn it from reactive to proactive with TeamViewer Remote Management.</p>\r\n"}}" id="text-2ef4e46577" class="cmp-text"> Supercharge your remote IT support and turn it from reactive to proactive with TeamViewer Remote Management. Enhance your TeamViewer experience, know more about your devices, and proactively keep your IT infrastructure healthy, stable, and

dann 2012/02/16

python

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Scala for ruby programmers

This document provides an overview of the Scala programming language. Some key points: - Scala is a statically typed language that runs on the JVM and supports both object-oriented and functional programming. - Scala code examples demonstrate features like traits, implicit conversions, pattern matching, immutable data structures, and functional-style programming with maps, options, and pattern mat

dann 2012/02/16

scala

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â—†tcptrackã¯ã€ã„ã‚ã‚†ã‚‹snifferã®ï¼‘ã¤ã€‚ ã€Œã‚‚ã—ã‹ã—ã¦ Dos æ”»æ’ƒã‚’é£Ÿã‚‰ã£ã¦ã‚‹ï¼Ÿã€ã¨ã„ã†æ™‚ã€ã¿ãªã•ã‚“ã©ã†ã•ã‚Œã¦ã„ã¾ã™ï¼Ÿ Linux ã‚µãƒ¼ãƒã® TCPÂ é€šä¿¡çŠ¶æ³ã‚’æŠŠæ¡ã™ã‚‹ã®ã«ã€æŽ¥ç¶šå…ƒãƒ»æŽ¥ç¶šå…ˆã®æŠŠæ¡ã§ã‚ã‚Œã°ã€netstat ã‚’ä½¿ã†ã®ãŒä¸€èˆ¬çš„ã€‚ã‚ˆã‚Šç´°ã‹ãªé€šä¿¡çŠ¶æ³ã§ã‚ã‚Œã° tcpdump ã‚’ä½¿ã†ã§ã—ã‚‡ã†ã€‚ã§ã™ãŒã€é€šä¿¡çŠ¶æ³ã ã‘ã§ãªãã€â€è»¢é€é‡â€ã‚’çŸ¥ã‚ŠãŸã„å ´åˆã‚„ã€ä»Šã©ã“ã®ãƒ›ã‚¹ãƒˆã¨ã®é€šä¿¡ãŒã‚µãƒ¼ãƒã®è² æ‹…ã«ãªã£ã¦ã„ã‚‹ã‹ã‚’æŠŠæ¡ã™ã‚‹äº‹ã¯ã€ãã†ãã†å˜ç´”ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ ãã‚“ãªã¨ã tcptrack ã‚’ä½¿ã†ã®ãŒä¾¿åˆ©ã§ã™ã€‚tcptrack ã¯ã€â€topâ€ ã‚³ãƒžãƒ³ãƒ‰ã®ã‚ˆã†ã«ã€ç§’å˜ä½ã§åˆ»ã€…ã¨é€šä¿¡çŠ¶æ³ã‚’è¡¨ç¤ºã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã©ã®ãƒ›ã‚¹ãƒˆé–“ã§ã€ã©ã®ã‚ˆã†ãªé€šä¿¡çŠ¶æ…‹ã§ã€ã‚¢ã‚¤ãƒ‰ãƒ«çŠ¶æ…‹ã®ç§’æ•°ã€è»¢é€ãƒ¬ãƒ¼ãƒˆã‚’è¡¨ç¤ºã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ â—†ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«æ–¹æ³• ãƒã‚¤ãƒŠãƒªã¾ãŸã¯ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‹ã‚‰ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã§ãã¾ã™ã€‚ç¾è¡Œãƒãƒ¼ã‚¸ãƒ§ãƒ³

dann 2012/02/16

network

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2012å¹´2æœˆ16æ—¥ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (8ä»¶)

Linux: traffic controlã€€netem tc

Haskell Performance Patterns

The Eclipse Jetty Project :: Eclipse Jetty

1.05BN QPM using MySQL Cluster 7.2

JavaScript.Next

Top 4 Software Based IIS Server Performance Tips

Scala for ruby programmers

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