Representation Learning for Scale-free Networks: スケールフリーãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«å¯¾ã™ã‚‹è¡¨ç¾å¦ç¿’
Linux Networking Tools: 101
Representation Learning for Scale-free Networks: スケールフリーãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«å¯¾ã™ã‚‹è¡¨ç¾å¦ç¿’
FIN -> FIN/ACK -> ACK ã¨ã„ㆠTCP ã®å¹»æƒ³ - kawasin73ã®ãƒ–ãƒã‚°
掴んã§é›¢ã•ã¬ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã€‚ã©ã†ã‚‚ã€ã‹ã‚ã—ã‚“ã§ã™ã€‚ã—ãŒã¿ã¤ã‹ãšã«é©åˆ‡ãªã‚¿ã‚¤ãƒŸãƒ³ã‚°ã§é›¢ã—ã¾ã—ょã†ã€‚ ã“ã®ï¼‘週間㧠RFC ã‚’èªã¿ãªãŒã‚‰ TCP/IP プãƒãƒˆã‚³ãƒ«ã‚¹ã‚¿ãƒƒã‚¯ã‚’自作ã—㟠1 ã®ã§ã™ãŒã€ãã®æ™‚ã«ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã®çµ‚了処ç†ã§ãƒãƒžã£ãŸã®ã§å¾Œå¦ã®ãŸã‚ã«æ›¸ã残ã—ã¦ãŠãã¾ã™ã€‚ 一言ã§ã¾ã¨ã‚る㨠FIN -> FIN/ACK -> ACK ã¯é–“é•ã£ã¦ã„ã¦ã€æ£ã—ã㯠FIN/ACK -> FIN/ACK -> ACK ã§ã‚ã£ãŸã¨ã„ã†è©±ã§ã™ã€‚ ã¡ãªã¿ã«ã€åƒ•ãŒè‡ªä½œã—㟠TCP/IP プãƒãƒˆã‚³ãƒ«ã‚¹ã‚¿ãƒƒã‚¯ã¯ã“ã‚Œã§ã™ã€‚ github.com ç¾è±¡ ãれ㯠TCP ã®ãƒªã‚¹ãƒŠãƒ¼ã¨ close 処ç†ãŒå‡ºæ¥ä¸ŠãŒã£ã¦ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ç®¡ç†ã®ãƒ†ã‚¹ãƒˆã‚’ã—ã¦ã„ãŸæ™‚ã®ã“ã¨ã§ã—ãŸã€‚ 自作 TCP スタックã§ãƒãƒ¼ãƒˆã‚’ Listen ã—㦠Accept ã—ãŸã‚‰ã™ãã«ã‚µãƒ¼ãƒå´ã‹ã‚‰ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’切æ–ã™ã‚‹ã¨ã„ã†ãƒ†ã‚¹ãƒˆã‚³ãƒ¼ãƒ‰ã‚’書ã„ã¦å®Ÿè¡Œã—ã€Linux
Linux 3.3 ã®æ–°æ©Ÿèƒ½ Network priority cgroup - TenForward
Linux 3.3 ã® cgroup 関連新機能 - TenForwardã®æ—¥è¨˜ ã§å°‘ã—紹介ã—㟠3.3 ã®æ–°æ©Ÿèƒ½ã§ã‚ã‚‹ Network priority cgroup ã‚’ç°¡å˜ã«è©¦ã—ã¦ã¿ã¾ã—ãŸï¼Ž net_prio ã«é–¢é€£ã™ã‚‹ã®ã¯ä»¥ä¸‹ã®ã†ã¡ï¼Œ $ ls /sys/fs/cgroup/net_prio/ cgroup.clone_children cgroup.procs net_prio.prioidx release_agent cgroup.event_control net_prio.ifpriomap notify_on_release tasks"net_prio.prioidx" 㨠"net_prio.ifpriomap" ã§ï¼Œã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ«ã«ä½¿ã†ã®ã¯ "net_prio.ifpriomap" ã§ã™ï¼Ž ファイルã®ä¸èº«ã¯ä»¥ä¸‹ã®ã‚ˆã†ãªæ„Ÿã˜ï¼Ž $ cat /sys/fs/cgroup/
Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚„ã‚ャッシュサーãƒã‚’マルãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã•ã›ã‚‹ãŸã‚ã®ã‚«ãƒ¼ãƒãƒ«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚° - ゆã†ã†ãブãƒã‚°
本記事ã®å…¬é–‹å¾Œã®2016å¹´7月ã«ã¯ã¦ãªã«ãŠã‘ã‚‹ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°äº‹ä¾‹ã‚’紹介ã—ãŸã€‚ ã¯ã¦ãªã«ãŠã‘ã‚‹Linuxãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ã‚¿ãƒƒã‚¯ãƒ‘フォーマンス改善 / Linux network performance improvement at hatena - Speaker Deck HAProxy ã‚„ nginx ãªã©ã®ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚„リãƒãƒ¼ã‚¹ãƒ—ãƒã‚ã‚·ã€memcached ãªã©ã® KVS ã®ã‚ˆã†ãªé«˜ãƒ‘ケットレートã«ãªã‚Šã‚„ã™ã„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¢ãƒ—リケーションã«ãŠã„ã¦ã€å˜ä¸€ã® CPU コアã«è² è·ãŒåã‚Šã€ãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã—ãªã„ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ 今回ã¯ã€ã“ã®ã‚ˆã†ãªãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¢ãƒ—リケーションã«ãŠã„㦠CPU è² è·ãŒãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã—ãªã„ç†ç”±ã¨ã€ãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã•ã›ã‚‹ãŸã‚ã® Linux カーãƒãƒ«ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ã‚¿ãƒƒã‚¯ã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°æ‰‹æ³•ã¨ã—㦠RFS (Receive Flow Steering) ã‚’
Queueing in the Linux Network Stack | Linux Journal
Packet queues are a core component of any network stack or device. They allow for asynchronous modules to communicate, increase performance and have the side effect of impacting latency. This article aims to explain where IP packets are queued on the transmit path of the Linux network stack, how interesting new latency-reducing features, such as BQL, operate and how to control buffering for reduce
Network scheduler - Wikipedia
This article is about scheduling in networking. For scheduling in computing generally, see Scheduling (computing). Packets queuing in a FIFO (first in, first out) data structure. A network scheduler, also called packet scheduler, queueing discipline (qdisc) or queueing algorithm, is an arbiter on a node in a packet switching communication network. It manages the sequence of network packets in the
Tun/Tap interface tutorial « \1
Foreword: please note that the code available here is only for demonstration purposes. If you want to be serious, you'll have to make it more robust and integrate it with other code. Also, the description is by no means a definitive reference on the subject, but rather the result of my experimentation. Please report any bug or error you find in the code or otherwise in this article. Thanks. Link t
ip Command Cheat Sheet for Red Hat Enterprise Linux - Red Hat Customer Portal
The ip command is a powerful tool designed to replace many of the old net-tools commands still in use; it allows a system administrator to adjust addresses, link state, routing tables, neighbour objects, and manage a system's network components. Download the attached cheat sheet and use it as a quick reference for ip commands, options, and tasks along with as a comparison to the older commands.
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PF_PACKETã®ä»•çµ„ã¿ - ã‚ã‚‚ã‚ã‚‚
Software Design 2012å¹´6月å·ã®ã€Žã€Œç”Ÿã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã€ãŒå¦™ã«ãƒ„ボã«ãƒãƒžã£ã¦é¢ç™½ã‹ã£ãŸã®ã§ã™ãŒã€ã•ã™ãŒã«ã‚ã®ãƒšãƒ¼ã‚¸æ•°ã§PF_PACKETを語るã¨ã€ã¤ã„ã¦ã„ã‘ãªã„èªè€…も多ãã¦æ®‹å¿µã‹ã‚‚。 ã¨ã„ã†ã“ã¨ã§ã€å‚考ã¾ã§ã«æ¦‚è¦å›³ã‚’書ã„ã¦ã¿ã¾ã—ãŸã€‚ C言語ã®ã‚½ã‚±ãƒƒãƒˆãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’ãªã‚“ã¨ãªã勉強ã—ãŸæ–¹ã¯å¤šã„ã¨æ€ã„ã¾ã™ã€‚ソケットã¯ã€ã‚«ãƒ¼ãƒãƒ«å†…部ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ¬ã‚¤ãƒ¤ãƒ¼ã¨ãƒ¦ãƒ¼ã‚¶ç©ºé–“ã‚’çµã³ã¤ã‘るインターフェース（API）ãªã‚ã‘ã§ã™ãŒã€ã‚«ãƒ¼ãƒãƒ«å†…部ã§ã¯ã€é€šå¸¸ã€ä¸Šå›³ï¼ˆå³å´ï¼‰ã®æµã‚Œã§å—信パケットãŒå‡¦ç†ã•ã‚Œã¦ã„ãã¾ã™ã€‚ 物ç†NICãŒå—ã‘å–ã£ãŸãƒ‘ケットã¯ã€ãƒ‡ãƒã‚¤ã‚¹ãƒ‰ãƒ©ã‚¤ãƒãŒL2プãƒãƒˆã‚³ãƒ«ã®å‡¦ç†ã‚’ã—ã¦ã€ã•ã‚‰ã«L3プãƒãƒˆã‚³ãƒ«ã®ç¨®é¡žï¼ˆIPv4/IPv6ãªã©ã®é•ã„）ã®åˆ¤åˆ¥ã¾ã§è¡Œã„ã¾ã™ã€‚ 判別ã—ãŸçµæžœã«åŸºã¥ã„ã¦ã€é©åˆ‡ãªL3プãƒãƒˆã‚³ãƒ«ã®ãƒãƒ³ãƒ‰ãƒ©ãƒ¼ãŒå‘¼ã³å‡ºã•ã‚Œã¦ã€L3プãƒãƒˆã‚³ãƒ«ã®å‡¦ç†ã‚’ã—ã¦ã€ã•ã‚‰ã«L4プãƒãƒˆ
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ICMPã¨ã¯ï¼ˆPingコマンド)
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tcコマンドã®ä½¿ã„æ–¹ - Qiita
How to set a static IP Address from the Command Line in GNU/Linux using ip addr and ip route
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Why protocol type value for IP protocol in ethernet frame is 8?
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