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Receive packet steering [LWN.net]
Contemporary networking hardware can move a lot of packets, to the point that the host computer can have a hard time keeping up. In recent years, CPU speeds have stopped increasing, but the number of CPU cores is growing. The implication is clear: if the networking stack is to be able to keep up with the hardware, smarter processing (such as generic receive offload) will not be enough; the system
Windows Internals II - 課題・講義資料
Windows Internals II - 課題・講義資料 講義資料・課題資料ãªã© 講義用資料 Windows Internals II - Projects WindowsKernelOverview KernelExtensions WindowsDriverModel WindowsDriverFoundation ObjectManagerLPC x86TrapsInterruptsExceptions VirtualMachineArchitecture ProcessesThreadsVM AdvancedFileSystems Monad 課題ã®ãŸã‚ã®è£œè¶³è³‡æ–™ï¼ˆæ—¥æœ¬èªžï¼‰ 課題ã®æ¦‚è¦ï¼ˆæ出方法ãªã©ï¼‰ Project I -- Kernel-mode extensions Project II -- Writing OS subsystems Project III -- NT
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TheC10kProblem - 「C10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1万å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚クライアントã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ンクã™ã‚‹å•é¡Œã®ã“㨠目次 ã“ã®æ–‡æ›¸ã«ã¤ã„㦠C10K å•é¡Œ 関連サイト ã¾ãšèªã‚€ã¹ã本 I/O フレームワーク I/O 戦略 1. å„スレッドãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘付ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ング I/O 㨠レベル・トリガ型ã®å®Œäº†é€šçŸ¥ã‚’利用ã™ã‚‹. ä¼çµ±çš„㪠select() ä¼çµ±çš„㪠poll() /dev/poll kqueue() 2. å„スレッドãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘付ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ング I/O 㨠変更型ã®å®Œäº†é€šçŸ¥(readiness change notification)を利用ã™ã‚‹. kqueue() epoll リアルタイム・シグナル fd å˜ä½ã®ã‚·ã‚°ãƒŠãƒ« (Signal-per-fd)
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http://www.makelinux.net/kernel_map/
http://developer.osdl.org/shemminger/tcp/netem-2.6.18-rt.patch
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