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Googleã®QUICã®è«–æ–‡ãŒçŸ¥è¦‹ã®å¡Šã ã£ãŸ - ASnoKaze blog
20181107è¿½è¨˜ QUICãƒ—ãƒãƒˆã‚³ãƒ«ã«ã¤ã„ã¦ã®æ¦‚è¦ã¯åˆ¥é€”è¨˜äº‹ã‚’æ›¸ãã¾ã—ãŸ asnokaze.hatena blog.com æ¦‚è¦ ACM SIGCOMM 2017ã¨ã„ã†é€šä¿¡ç³»ã®å¦ä¼šã«ã€Googleã®äºº ç·å‹¢21äººã«ã‚ˆã£ã¦æ›¸ã‹ã‚ŒãŸã€ŒThe QUIC Transport Protocol: Design and Internet-Scale Deploymentã€ã¨ã„ã†è«–æ–‡ãŒæå‡ºã•ã‚Œã€å¦ä¼šãƒ›ãƒ¼ãƒ ãƒšãƒ¼ã‚¸ã‚ˆã‚Šé–²è¦§å‡ºæ¥ã‚‹ã€‚ ã“ã®è«–æ–‡ã¯ã€QUICã®è¨è¨ˆä»•æ§˜ã¨å®Ÿéš›ã«Googleã®ã‚µãƒ¼ãƒ“ã‚¹ã«ãƒ‡ãƒ—ãƒã‚¤ã—ãŸçµæžœã«ã¤ã„ã¦æ›¸ã‹ã‚Œã¦ã„ã‚‹ã€‚ ã™ã§ã«Googler Searchã‚„Youtubeã§QUICã¯æœ‰åŠ¹ã«ãªã£ã¦ãŠã‚Šã€ä¸€æ—¥ã‚ãŸã‚Šæ•°åå„„ã®æŽ¥ç¶šã‚’å‡¦ç†ã—ã€Googleã®egress trafficã®ã†ã¡30%ãŒQUICã«ãªã£ã¦ãŠã‚Šã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã®å†…7%ãŒQUICã ã¨æŽ¨å®šã•ã‚Œã‚‹ã¨ã„ã†èª¬æ˜Žã‹ã‚‰è«–æ–‡ã¯å§‹ã¾ã‚‹ã€‚
mooz 2017/08/13
network
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HetRec 2011
The 2nd International Workshop on Information Heterogeneity and Fusion in Recommender Systems (HetRec 2011,Â http://ir.ii.uam.es/hetrec2011) has released datasets from Delicious, Last.fm Web 2.0, MovieLens, IMDb, and Rotten Tomatoes. These datasets contain social networking, tagging, and resource consuming (Web page bookmarking and music artist listening) information from sets of around 2,000 users
mooz 2016/08/09
Delicious Bookmark, Last.FM ã®ãƒ‡ãƒ¼ã‚¿ã‚»ãƒƒãƒˆ

dataset

network
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ãƒ—ãƒã‚ã‚·ä¸‹ã§Linuxã‚’ä½¿ã†éš›ã®ãƒ¡ãƒ¢ - Î›lisue's blog
ã©ã†ã‚‚Alisueã§ã™ã€‚ç ”ç©¶å®¤ã¯å®Œå…¨Proxyç’°å¢ƒä¸‹ã®ãŸã‚ã€é€šå¸¸ã®æ–¹æ³•ã§ã¯ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ç‰ãŒã§ããªã„å ´åˆãŒå¤šã€…ã‚ã‚Šã¾ã™ã€‚ å†ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ãªã©ã‚’è¡Œã£ãŸéš›ã«æ¯Žåº¦Googleå…ˆç”Ÿã¨æ ¼é—˜ã—ãªãŒã‚‰è¨å®šã‚’è¡Œãªã£ã¦ã„ãŸã®ã§ã™ãŒã€ã„ã„åŠ æ¸›é¢å€’ãã•ããªã£ãŸã®ã§ã¾ã¨ã‚ã¾ã™ã€‚ å¿…é ˆè¨å®š ã¾ãšã¯ä¸‹è¨˜è¨å®šã‚’ã™ã¹ã¦è¡Œãªã£ã¦ãã ã•ã„ã€‚å¤§æŠµã®å ´åˆã“ã®è¨å®šã ã‘ã§ã™ã¹ã¦ãŒè§£æ±ºã—ã¾ã™ã€‚ ãƒ—ãƒã‚ã‚·ç”¨ç’°å¢ƒå¤‰æ•°ã®è¨å®šï¼ˆã‚¿ãƒ¼ãƒŸãƒŠãƒ«ç’°å¢ƒï¼‰ é€šå¸¸ç’°å¢ƒè¨å®šã¯ä¸‹è¨˜ã«ä¸Šã’ã‚‹ã©ã‚Œã‹ã§è¡Œã„ã¾ã™ã€‚ /etc/environment ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã®ç’°å¢ƒå¤‰æ•°ã‚’è¨å®šã™ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã€‚ ä»Šå›žã®ã‚ˆã†ã«ã‚·ã‚¹ãƒ†ãƒ å…¨ä½“ã®ç’°å¢ƒå¤‰æ•°ã‚’å¤‰æ›´ã™ã‚‹å ´åˆã¯ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç·¨é›†ã™ã‚‹ã®ãŒå¸¸å¥—æ‰‹æ®µã§ã‚ã‚‹ã€‚ /etc/profile ãƒã‚°ã‚¤ãƒ³æ™‚ã«å®Ÿè¡Œã•ã‚Œã‚‹ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã€‚ ãƒã‚°ã‚¤ãƒ³ã‚·ã‚§ãƒ«ã¨ã—ã¦ç™»éŒ²ã•ã‚Œã¦ã„ã‚‹ã‚·ã‚§ãƒ«ãŒèµ·å‹•ã—ãŸéš›ã«è‡ªå‹•çš„ã«èªã¿è¾¼ã¾ã‚Œã‚‹ã€‚ /etc/profile.d/XXX
mooz 2014/07/17
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linux

network
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virt-copy-out
NAME SYNOPSIS DESCRIPTION EXAMPLES JUST A SHELL SCRIPT WRAPPER AROUND GUESTFISH OPTIONS SEE ALSO AUTHORS COPYRIGHT LICENSE BUGS NAME virt-copy-out - Copy files and directories out of a virtual machine disk image. SYNOPSIS virt-copy-out -a disk.img /file|dir [/file|dir ...] localdir virt-copy-out -d domain /file|dir [/file|dir ...] localdir DESCRIPTION virt-copy-out copies files and directories out
mooz 2014/07/14
libguestfs ã«å…¥ã£ã¦ã„ã‚‹ãƒ„ãƒ¼ãƒ«. guestfish ã®ãƒ©ãƒƒãƒ‘ãƒ¼. guest ã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’å‡ºã—å…¥ã‚Œ.

kvm

network
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è‰²ã€…ãªport forwardingæ–¹æ³• - Qiita
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mooz 2014/07/14
port forwarding

linux

network
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vyattaãƒ©ãƒœ | ubuntuã§ãƒ–ãƒªãƒƒã‚¸ã‚’ä½œæˆ
ä¸‹å›³ã®ã‚ˆã†ã«ubuntu1ã¨ubuntu2ãŒã‚ã‚Šã€ubuntu2ã‚’ubuntu1ã®eth1çµŒç”±ã§ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«æŽ¥ç¶šã™ã‚‹ãŸã‚ã«ãƒ–ãƒªãƒƒã‚¸ã‚’ä½œæˆã—ãŸã®ã§ãã®æ‰‹é †ã‚’ãƒ¡ãƒ¢ã—ã¦ãŠãã¾ã™ã€‚ãªãŠã€ubuntu2ã®eth0ã¨ubuntu1ã®eth0ã¯ç›´æŽ¥LANã‚±ãƒ¼ãƒ–ãƒ«ã§æŽ¥ç¶šã—ã¦ã„ã¾ã™ã€‚ ä½œæ¥è‡ªä½“ã¯ç°¡å˜ã§ã€/etc/networks/interfacesã‚’ç·¨é›†ã™ã‚‹ã ã‘ã§ã™ã€‚ï¼ˆubuntu12.04ã®å ´åˆã§ã™ï¼‰ /etc/networks/interfacesã®ç·¨é›† ãƒ–ãƒªãƒƒã‚¸ã‚’ä½œæˆã™ã‚‹ãŸã‚ã«ã€ubuntu1ã®/etc/networks/interfacesã«ä¸‹è¨˜ã®ã‚ˆã†ã«è¨˜è¿°ã—ã¾ã™ã€‚ ï¼ƒç·¨é›†å‰ auto lo iface lo inet loopback ï¼ƒç·¨é›†å¾Œ auto lo iface lo inet loopback #ä»¥é™ãŒè¿½åŠ éƒ¨åˆ† auto eth0 iface eth0 inet static a
mooz 2014/07/11
Debian, Ubuntu ã«ãŠã‘ã‚‹ãƒ–ãƒªãƒƒã‚¸æŽ¥ç¶š

network
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ã¯ã¦ãªãƒ–ãƒã‚° | ç„¡æ–™ãƒ–ãƒã‚°ã‚’ä½œæˆã—ã‚ˆã†
ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãƒ‘ãƒ‘ã¨4æ³ã®å¨˜ã§2024å¹´ã«ä½œã£ãŸã‚‚ã® å¨˜ã‚‚4æ³ã¨ãªã‚Šã€ä½•ã‹ã‚’è¦ªãŒä½œã‚‹ã€ã¨ã„ã†ã‚ˆã‚Šã€Œè¦ªã¨ä¸€ç·’ã«ä½œã‚‹ã€ã“ã¨ãŒå¢—ãˆã¦ãã¾ã—ãŸã€‚ ä»Šå¹´ã‚‚ç´°ã‹ã„ãƒ¢ãƒŽã¥ãã‚Šã‚’ãŸãã•ã‚“ãŠã“ãªã£ãŸã®ã§ã€‚å¹´æœ«ã¨ã„ã†ã“ã¨ã§ä¸€æ°—ã«ã¾ã¨ã‚ã¦ç´¹ä»‹ã—ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ ã“ã®è¨˜äº‹ã¯åè‚²ã¦ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ Advent Calendar 2024ã®12/07ã®è¨˜äº‹ã§â€¦
mooz 2014/07/11
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kvm

network
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ãƒãƒ¼ãƒãƒ£ãƒ«ãƒ›ã‚¹ãƒˆè¨å®š - CentOSã§è‡ªå®…ã‚µãƒ¼ãƒãƒ¼æ§‹ç¯‰
ç¾åœ¨é‹ç”¨ä¸ã®Webã‚µãƒ¼ãƒãƒ¼ã§ã€ã‚‚ã†ã²ã¨ã¤Webã‚µã‚¤ãƒˆã‚’é‹ç”¨ã™ã‚‹ã€‚ ã“ã“ã§ã¯ã€Webã‚µãƒ¼ãƒãƒ¼Apacheã®ãƒãƒ¼ãƒãƒ£ãƒ«ãƒ›ã‚¹ãƒˆæ©Ÿèƒ½ã‚’ä½¿ç”¨ã—ã¦ã€ä»¥ä¸‹ã«ç¤ºã™æ¡ä»¶ã§ï¼’ã¤ã®Webã‚µã‚¤ãƒˆã‚’é‹ç”¨ã§ãã‚‹ã‚ˆã†ã«ã™ã‚‹ã€‚ ãƒ»ãƒ¡ã‚¤ãƒ³Webã‚µã‚¤ãƒˆã¯http://centossrv.com/ ãƒ»è¿½åŠ ã™ã‚‹Webã‚µã‚¤ãƒˆã¯http://virtual.com/ ãƒ»ãƒ¡ã‚¤ãƒ³Webã‚µã‚¤ãƒˆã®ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãƒ«ãƒ¼ãƒˆã¯/var/www/html/centossrv.com ãƒ»è¿½åŠ ã™ã‚‹Webã‚µã‚¤ãƒˆã®ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãƒ«ãƒ¼ãƒˆã¯/var/www/html/virtual.com ãƒ»ãƒ¡ã‚¤ãƒ³Webã‚µã‚¤ãƒˆã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ãƒã‚°ã¯/var/log/httpd/access_logã€/var/log/httpd/error_logã«è¨˜éŒ²ã™ã‚‹ ãƒ»è¿½åŠ ã™ã‚‹Webã‚µã‚¤ãƒˆã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ãƒã‚°ã¯/var/log/httpd/virtual.com-access_logã€/var/lo
mooz 2014/01/22
admin

linux

network
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aphyr - Overview
mooz 2014/01/17
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚·ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚¿ jepsen ã¨ã‹

hacker

network

distributed
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ã‚ˆãããŸã¯ã¦ãƒ€ - netstatã§ãƒãƒ¼ãƒˆã‚’ç©ºã‘ã¦ã„ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’çŸ¥ã‚‹
ãŸã netstat -lnã ã‘ã ã¨ã©ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‹ã‚‰ãƒãƒ¼ãƒˆç•ªå·ã‚’é–‹ã‘ã¦ã„ã‚‹ã®ã‹ã‚ã‹ã‚‰ãªã„ã®ã§ã€ãã‚Œã‚’ç¢ºèªã™ã‚‹ãŸã‚ã«ã€Œlsof -iã€ã‚’å®Ÿè¡Œã—ã¾ã™ã€‚ ç§ã¯netstatã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã¯æ»ã‚“ã ãŠã°ã‚ã¡ã‚ƒã‚“ã‹ã‚‰-lanputã¨æ•™ã‚ã‚Šã¾ã—ãŸï¼Ž ã¨ã„ã†ã‹ã“ã®ç”»é¢ã‚’é–‹ç™ºã™ã‚‹ã¨ãã«ã“ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ç¾¤ã«æ±ºå®šã—ã¦ãã®ã¾ã¾ç¾åœ¨ã«è‡³ã‚‹ã¨ã„ã†ã ã‘ã§ã™ãŒï¼Ž # netstat -lanput Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:741 0.0.0.0:* LISTEN 1831/rpc.statd tcp 0 0 127.0.0.1:199 0.0.0.0:* LISTEN
mooz 2013/12/03
netstat -lanput

linux

network
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Error correction code - Wikipedia
In computing, telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding[1][2][3] is a technique used for controlling errors in data transmission over unreliable or noisy communication channels. The central idea is that the sender encodes the message in a redundant way, most often by using an error correction code or error correcting code (ECC).[4][5
mooz 2013/08/26
network
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ã‚°ãƒãƒ¼ãƒãƒ«IPã§ãƒ«ãƒ¼ã‚¿ã®è¨å®šç”»é¢ãŒé–‹ã„ã¦ã—ã¾ã† - .è‡ªå®…ã‚µãƒ¼ãƒã‚’å…¬é–‹ã—ã¦ã„ã‚‹ã®ã§ã™ãŒã€å¤–ã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã¯ãƒ«ãƒ¼ã‚¿ã«è¨å®šã—ãŸã‚µãƒ¼ãƒã«å•é¡Œãª... - Yahoo!çŸ¥æµè¢‹
ã‚°ãƒãƒ¼ãƒãƒ«IPã§ãƒ«ãƒ¼ã‚¿ã®è¨å®šç”»é¢ãŒé–‹ã„ã¦ã—ã¾ã† . è‡ªå®…ã‚µãƒ¼ãƒã‚’å…¬é–‹ã—ã¦ã„ã‚‹ã®ã§ã™ãŒã€å¤–ã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã¯ãƒ«ãƒ¼ã‚¿ã«è¨å®šã—ãŸã‚µãƒ¼ãƒã«å•é¡Œãªãç¹‹ãŒã‚‹ã®ã§ã™ãŒã€LANå†…ã®ç«¯æœ«ï¼ˆã¤ã¾ã‚Šè‡ªå®…PCãªã©ï¼‰ã§è‡ªèº«ã®ã‚°ãƒãƒ¼ãƒãƒ«IPï¼ˆorãƒ‰ãƒ¡ã‚¤ãƒ³åï¼‰ã‚’å©ãã¨ã€ãªãœã‹ãƒ«ãƒ¼ã‚¿ã®è¨å®šç”»é¢ï¼ˆåŽ³å¯†ã«ã¯Basicèªè¨¼ç”»é¢ï¼‰ãŒé–‹ã„ã¦ã—ã¾ã„ã¾ã™ã€‚ ä½¿ç”¨ã—ã¦ã„ã‚‹ãƒ«ãƒ¼ã‚¿ã¯ã€ ãƒãƒƒãƒ•ã‚¡ãƒãƒ¼ã®AirStationã€ŒWHR-HP-AMPGã€ã§ã™ã€‚ ä»•æ–¹ãªã„ã®ã§ã€å¤–ã®DNSã®è¨å®šå¾Œã¯æºå¸¯é›»è©±ã®ãƒ¢ãƒ‡ãƒ çµŒç”±ã§ç¢ºèªã™ã‚‹ã¨ã„ã†ã€çµæ§‹é¢å€’ãªã“ã¨ã‚’ã‚„ã£ã¦ã„ã¾ã™ã€‚ ã“ã®ç¾è±¡ã‚’è§£æ±ºã™ã‚‹ã€ä½•ã‹ãŠå¿ƒå½“ãŸã‚Šã®ã‚ã‚‹ã‹ãŸãŒã„ã‚‰ã£ã—ã‚ƒã„ã¾ã—ãŸã‚‰ã€çŸ¥æµã‚’é ‚ã‘ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ã‚ˆã‚ã—ããŠé¡˜ã„è‡´ã—ã¾ã™ã€‚ >thisisme1222ã•ã‚“ ãƒãƒ¼ã‚«ãƒ«ã§ã—ãŸã‚‰hostsã§è§£æ±ºã§ãã¾ã™ãŒã€å†…å¤–ã§åŒã˜ã‚ˆã†ã«è¦‹ãˆã‚‹ã“ã¨ãŒæœ›ã¾ã—ã„ã®ã§â€¦â€¦ã€‚ >phjqw276ã•ã‚“ å¤–ã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã¨ç›®çš„
mooz 2013/07/15
Buffalo ã®ä¸€éƒ¨ãƒ«ãƒ¼ã‚¿ã§ã¯ NAT ã®ãƒãƒ¼ãƒˆå¤‰æ›è¨å®šãŒãƒ«ãƒ¼ã‚¿ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã«é©ç”¨ã•ã‚Œãªã„ãŸã‚ã€è‡ªå®…ã‚µãƒ¼ãƒã«ã‚¢ã‚¯ã‚»ã‚¹ã—ãŸéš›ã«ãƒ«ãƒ¼ã‚¿ã®ç®¡ç†ç”»é¢ãŒé–‹ã„ã¦ã—ã¾ã†ã€‚

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sk_buff - Linuxã‚«ãƒ¼ãƒãƒ«ãƒ¡ãƒ¢
3. ãã®ä»–ã®ãƒ‡ãƒ¼ã‚¿æ§‹é€ 3.1 fragsé…åˆ— skb_shared_infoå†…ã®fragsé…åˆ—ãŒã‚ã‚‹ã€‚ã“ã®é…åˆ—ã‚’ä½¿ç”¨ã™ã‚‹ã“ã¨ã§ã€ãƒ‘ã‚±ãƒƒãƒˆãƒ‡ãƒ¼ã‚¿ã‚’éžé€£ç¶šãªé ˜åŸŸã«åˆ†æ–ã—ã¦ä¿æŒã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚fragsã‚’ä½¿ç”¨ã—ãŸçŠ¶æ…‹ã®sk_buffã‚’å›³3.1ã«ç¤ºã™ã€‚ ãŸã ã—ã€ã“ã®ã‚ˆã†ã«fragsãƒ‘ã‚±ãƒƒãƒˆãƒ‡ãƒ¼ã‚¿ã‚’åˆ†æ–ã—ã¦æŒã¤å½¢å¼ã¯ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚«ãƒ¼ãƒ‰(ã¨ãã®ãƒ‰ãƒ©ã‚¤ãƒ)ãŒScatter/gather I/O(*1)ã«å¯¾å¿œã—ã¦ã„ãªã„ã¨ä½¿ãˆãªã„ã€‚Scatter/gather I/Oã«å¯¾å¿œã—ã¦ã„ã‚‹ã¨ãƒ‡ãƒã‚¤ã‚¹ã«NETIF_F_SGãƒ•ãƒ©ã‚°ãŒè¨å®šã•ã‚Œã¦ã„ã‚‹ã®ã§ã€é€ä¿¡ãƒ‡ãƒã‚¤ã‚¹ã«ã“ã®ãƒ•ãƒ©ã‚°ãŒç«‹ã£ã¦ã„ã‚‹å ´åˆã®ã¿ã€ã“ã®ã‚ˆã†ãªå½¢å¼ã‚’ä½¿ã†ã€‚ fragsé…åˆ—ã®è¦ç´ ã¯skb_frag_structã¨ãªã£ã¦ãŠã‚Š(ãƒã‚¤ãƒ³ã‚¿ã§ã¯ãªããã®ã‚‚ã®)ã€ã“ã‚Œã¯ã€åˆ†æ–ã•ã‚ŒãŸãƒ‡ãƒ¼ã‚¿ãŒã©ã“ã«ã‚ã‚‹ã‹ã‚’ç®¡ç†ã™ã‚‹ã€‚ skb_frag_structã¯ãƒ‡ãƒ¼ã‚¿ãŒç½®ã‹ã‚Œã¦ã„
mooz 2013/05/27
NIC ãŒ scatter/gather å…¥å‡ºåŠ›ã«å¯¾å¿œã—ã¦ã„ã‚‹å ´åˆã¯ NETIF_F_SG ãŒè¨å®šã•ã‚Œã€éžé€£ç¶šãªãƒ¡ãƒ¢ãƒªé ˜åŸŸã‚’ç›´æŽ¥è»¢é€å¯èƒ½ã«ã€‚skb_frag_struct ãŒéžé€£ç¶šãªãƒšãƒ¼ã‚¸æƒ…å ±ã€‚

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Border Gateway Protocol - Wikipedia
Border Gateway Protocolï¼ˆãƒœãƒ¼ãƒ€ãƒ¼ãƒ»ã‚²ãƒ¼ãƒˆã‚¦ã‚§ã‚¤ãƒ»ãƒ—ãƒãƒˆã‚³ãƒ«ã€ç•¥ç§°Â : BGPï¼‰ã¯è‡ªå¾‹ã‚·ã‚¹ãƒ†ãƒ ï¼ˆASï¼‰é–“ã§çµŒè·¯æƒ…å ±ã‚’äº¤æ›ã™ã‚‹ãŸã‚ã«è¨è¨ˆã•ã‚ŒãŸãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒ—ãƒãƒˆã‚³ãƒ«ã§ã‚ã‚‹ã€‚åºƒç¾©ã®Exterior Gateway Protocolï¼ˆEGPï¼‰ã§ã‚ã‚Šã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã§ã¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆãƒ»ã‚µãƒ¼ãƒ“ã‚¹ãƒ»ãƒ—ãƒãƒã‚¤ãƒ€ï¼ˆISPï¼‰ã‚„å·¨å¤§ãªãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ç›¸äº’æŽ¥ç¶šã§æ¨™æº–çš„ãªãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒ—ãƒãƒˆã‚³ãƒ«ã¨ã—ã¦åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹ã€‚ è‡ªå¾‹ã‚·ã‚¹ãƒ†ãƒ ï¼ˆASï¼‰é–“ã®ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚’è¡Œã†Exterior Gateway Protocolï¼ˆEGPï¼‰ã®é€šä¿¡ãƒ—ãƒãƒˆã‚³ãƒ«ã§ã‚ã‚‹ã€‚ BGPã¯IPãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‹è‡ªå¾‹ã‚·ã‚¹ãƒ†ãƒ ï¼ˆASï¼‰é–“ã®åˆ°é”æ€§ã‚’ç¤ºã™ãƒ—ãƒ¬ãƒ•ã‚£ãƒƒã‚¯ã‚¹ï¼ˆprefixï¼‰ã®ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒ†ãƒ¼ãƒ–ãƒ«ã‚’ç¶æŒã™ã‚‹ã“ã¨ã§ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚’è¡Œã†ã€‚BGPã¯ãƒ‘ã‚¹ãƒ™ã‚¯ãƒˆãƒ«åž‹ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒ—ãƒãƒˆã‚³ãƒ«ï¼ˆè‹±èªžç‰ˆï¼‰ã«åˆ†é¡žã•ã‚Œã€æŠ€è¡“çš„ãªãƒ¡ãƒˆãƒªãƒƒã‚¯ã¯ä½¿ç”¨ã—ãªã„ãŒã€ãƒãƒƒãƒˆ
mooz 2013/05/24
BGP: Border Gateway Protocol

network
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Zero Copy I: User-Mode Perspective | Linux Journal
By now almost everyone has heard of so-called zero-copy functionality under Linux, but I often run into people who don't have a full understanding of the subject. Because of this, I decided to write a few articles that dig into the matter a bit deeper, in the hope of unraveling this useful feature. In this article, we take a look at zero copy from a user-mode application point of view, so gory ker
mooz 2013/05/24
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linux_kernel

network
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ã‚¸ãƒ§ãƒ³ãƒ»ãƒã‚¹ãƒ†ãƒ« - Wikipedia
ã‚¸ãƒ§ãƒ³ãƒ»ãƒã‚¹ãƒ†ãƒ«(Jon Postel)ã“ã¨ã‚¸ãƒ§ãƒŠã‚µãƒ³ãƒ»ãƒ–ãƒ«ãƒ¼ã‚¹ãƒ»ãƒã‚¹ãƒ†ãƒ«ï¼ˆJonathan Bruce Postel ([pÉ™ËˆstÉ›l])ã€1943å¹´8æœˆ6æ—¥ - 1998å¹´10æœˆ16æ—¥[2]ï¼‰ã¯ã€ã‚¢ãƒ¡ãƒªã‚«åˆè¡†å›½ã®è¨ˆç®—æ©Ÿç§‘å¦è€…ã§ã‚ã‚‹ã€‚ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®é–‹ç™ºã€ç‰¹ã«ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆæ¨™æº–ã«é–¢ã—ã¦å¤šãã®é‡è¦ãªè²¢çŒ®ã‚’ã—ãŸã€‚å½¼ã¯ä¸»ã«ã€Request for Comments(RFC)æ–‡æ›¸ã‚·ãƒªãƒ¼ã‚ºã®ç·¨é›†è€…ã€Simple Mail Transfer Protocol(SMTP)ã®ä½œè€…ã¨ã—ã¦ã€ãã—ã¦äº¡ããªã‚‹ã¾ã§Internet Assigned Numbers Authority(IANA)ã®ç®¡ç†è€…ã‚’å‹™ã‚ã¦ã„ãŸã“ã¨ã§çŸ¥ã‚‰ã‚Œã¦ã„ã‚‹ã€‚ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚½ã‚µã‚¨ãƒ†ã‚£ã®ãƒã‚¹ãƒ†ãƒ«è³žï¼ˆè‹±èªžç‰ˆï¼‰ã‚„å—ã‚«ãƒªãƒ•ã‚©ãƒ«ãƒ‹ã‚¢å¤§å¦æƒ…å ±ç§‘å¦ç ”ç©¶æ‰€ã®ãƒã‚¹ãƒ†ãƒ«ã‚»ãƒ³ã‚¿ãƒ¼ã¯ã€å½¼ã‚’è¨˜å¿µã—ã¦åä»˜ã‘ã‚‰ã‚ŒãŸã€‚å½¼ãŒäº¡ããªã£ãŸã¨ãã€ãƒ´ã‚£ãƒ³ãƒˆãƒ³ãƒ»ã‚µãƒ¼ãƒ•ãŒè¿½æ‚¼æ–‡ã‚’
mooz 2012/10/19
Robustness princeple: be conservative in what you do, be liberal in what you accept from others

network
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Latency numbers every programmer should know â€” Gist
Forks gist: 2843573 by chetan Latency numbers every progr... created May 31, 2012 gist: 2844153 by mikea Latency numbers every progr... created May 31, 2012 gist: 2844932 by adragomir Latency numbers every progr... created May 31, 2012 gist: 2850587 by Bamco Latency numbers every progr... created June 01, 2012 gist: 2851124 by Stals Latency numbers every progr... created June 01, 2012 gist: 285208
mooz 2012/06/02
å„ç¨®ãƒ¬ã‚¤ãƒ†ãƒ³ã‚·ï¼Žã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒŸã‚¹ï¼Œåˆ†å²äºˆæ¸¬å¤±æ•—ï¼Œmutexï¼Œãƒ¡ãƒ¢ãƒªå‚ç…§ï¼Œåœ§ç¸®ï¼Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯é€ä¿¡ï¼Œãƒ‡ã‚£ã‚¹ã‚¯ã‚·ãƒ¼ã‚¯ãªã©ï¼Ž

performance

network

cpu

thread
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ZeroMQ
Why ZeroMQ? ZeroMQ (also known as Ã˜MQ, 0MQ, or zmq) looks like an embeddable networking library but acts like a concurrency framework. It gives you sockets that carry atomic messages across various transports like in-process, inter-process, TCP, and multicast. You can connect sockets N-to-N with patterns like fan-out, pub-sub, task distribution, and request-reply. It's fast enough to be the fabric
mooz 2012/03/31
TCP alternative

network
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é©æ–°çš„ãªã€Œ6æ¬¡å…ƒãƒ¡ãƒƒã‚·ãƒ¥ï¼ãƒˆãƒ¼ãƒ©ã‚¹ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯æŠ€è¡“ - å¯Œå£«é€š
8ä¸‡å€‹ä»¥ä¸Šã®CPUãŒæè¼‰ã•ã‚Œã¦ã„ã‚‹ã€ã¨ã¦ã¤ã‚‚ãªãå¤§ããªã‚·ã‚¹ãƒ†ãƒ ã§ã‚ã‚‹ã‚¹ãƒ¼ãƒ‘ãƒ¼ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã€Œäº¬ã€ã§ã¯ã€CPUé–“ã§è¨ˆç®—çµæžœç‰ã®ãƒ‡ãƒ¼ã‚¿ã‚’ã‚„ã‚Šå–ã‚Šã™ã‚‹ãŸã‚ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãŒã€ã¨ã¦ã‚‚é‡è¦ãªå½¹å‰²ã‚’æžœãŸã—ã¾ã™ã€‚ã€Œäº¬ã€ã§ã¯ã€8ä¸‡å€‹ä»¥ä¸Šã®CPUé–“ã‚’ç›¸äº’ã«æŽ¥ç¶šã™ã‚‹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ï¼ˆã‚¤ãƒ³ã‚¿ãƒ¼ã‚³ãƒã‚¯ãƒˆï¼‰ã«ã€ã€Œ6æ¬¡å…ƒãƒ¡ãƒƒã‚·ãƒ¥ï¼ãƒˆãƒ¼ãƒ©ã‚¹ã€ã¨ã„ã†é©æ–°çš„ãªæ§‹æˆã‚’æŒãŸã›ã¾ã—ãŸã€‚ ã€Œäº¬ã€ã®CPUã¯çŸæ™‚é–“ã«éžå¸¸ã«å¤šãã®è¨ˆç®—ã‚’ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚è¨ˆç®—é€”ä¸ã«ã¯CPUé–“ã§ãƒ‡ãƒ¼ã‚¿ã‚’ã‚„ã‚Šå–ã‚Šã™ã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ãŒã€ã“ã®ãƒ‡ãƒ¼ã‚¿ã®ã‚„ã‚Šå–ã‚ŠãŒé…ã„ã¨CPUãŒæŒã¤é«˜ã„è¨ˆç®—èƒ½åŠ›ã‚’ä½¿ã„åˆ‡ã‚‹ã“ã¨ãŒã§ãã¾ã›ã‚“ã€‚ã€Œäº¬ã€ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã€Œ6æ¬¡å…ƒãƒ¡ãƒƒã‚·ãƒ¥ï¼ãƒˆãƒ¼ãƒ©ã‚¹ã€ã¯éš£ã‚Šåˆã†CPUã¨ã®é€šä¿¡çµŒè·¯ãŒå¤šã„ãŸã‚ã€CPUé–“ã®ãƒ‡ãƒ¼ã‚¿é€šä¿¡ã‚’æœ€çŸãƒ«ãƒ¼ãƒˆã§ã€çŸæ™‚é–“ã«å®Ÿæ–½ã™ã‚‹ã‚ˆã†ã«è¨è¨ˆã•ã‚Œã¦ãŠã‚Šã€ä¸–ç•Œæœ€é«˜é€Ÿã‚¯ãƒ©ã‚¹ã®CPUã®è¨ˆç®—èƒ½åŠ›ã‚’ä½™ã™ã¨ã“ã‚ãªãå¼•ãå‡ºã™ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¨ãªã£ã¦ã„ã¾ã™ã€‚ CPU
mooz 2012/03/06
äº¬ã®ã‚¤ãƒ³ã‚¿ãƒ¼ã‚³ãƒã‚¯ãƒˆã‚’æ‹…ã† Tofu ã«ã¤ã„ã¦ï¼Ž6 æ¬¡å…ƒãƒˆãƒ¼ãƒ©ã‚¹ã§æ§‹æˆã—ï¼Œãƒ¦ãƒ¼ã‚¶ãŒä½¿ã„ã‚„ã™ã„ã‚ˆã†ã« 3 æ¬¡å…ƒã®ãƒ“ãƒ¥ãƒ¼ã‚’ä¸Žãˆã‚‹ï¼Žå®Ÿéš›ã®é€šä¿¡ã¨ãƒ¦ãƒ¼ã‚¶ã«è¦‹ãˆã‚‹é€šä¿¡ãŒç•°ãªã‚‹ã®ã§ï¼Œãƒ‡ãƒãƒƒã‚°ãŒå›°é›£ã¨ã‹ï¼Ž

hpc

network
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netmap - the fast packet I/O framework
net map is a framework for high speed packet I/O. Together with its companion VALE software switch, it is implemented as a single kernel module and available for FreeBSD, Linux and now also Windows (OSX still missing, unfortunately). net map supports access to network cards (NICs), host stack, virtual ports (the "VALE" switch), and "net map pipes". It can easily reach line rate on 10G NICs (14.88Â Mpp
mooz 2012/02/19
mmap ã«ã‚ˆã‚Šè¤‡æ•°ã® NIC ã‚’åŒã˜ãƒ¡ãƒ¢ãƒªé ˜åŸŸã§ï¼Žãƒªãƒ³ã‚°ãƒãƒƒãƒ•ã‚¡ï¼Žé«˜é€Ÿï¼Žç¾æ®µéšŽã§ã¯å¯¾å¿œ NIC ãŒé™ã‚‰ã‚Œã‚‹ï¼Ž

network

packet
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