[B! linux] kuenishiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

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linuxã«é–¢ã™ã‚‹kuenishiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (551)

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Linux Kernel Watch 5æœˆç‰ˆ Firefoxã®ãƒ—ãƒãƒ•ãƒªãƒ¼ã‚ºå•é¡Œã‹ã‚‰å§‹ã¾ã£ãŸå¤§è«–äº‰ï¼ˆ1/2ï¼‰ âˆ’ ï¼ IT
5æœˆç‰ˆã€€Firefoxã®ãƒ—ãƒãƒ•ãƒªãƒ¼ã‚ºå•é¡Œã‹ã‚‰å§‹ã¾ã£ãŸå¤§è«–äº‰ å°å´Žè³‡åºƒ 2009/6/1 ä»Šå›žãƒ¡ã‚¤ãƒ³ã®ãƒã‚¿ã¨ã—ã¦å–ã‚Šä¸Šã’ãŸFirefoxã®ã€Œãƒ—ãƒãƒ•ãƒªãƒ¼ã‚ºå•é¡Œã€ã§ã™ãŒã€ãã®å¾Œèª¿ã¹ãŸã¨ã“ã‚ã€Windowsã‚„Macã§ã‚‚å•é¡Œã«ãªã£ã¦ã„ã‚‹ã‚ˆã†ã§ã™ãã€‚ã€Œfirefox sqliteã€ã§æ¤œç´¢ã™ã‚‹ã¨ã„ã£ã±ã„ãƒ’ãƒƒãƒˆã—ã¾ã—ãŸã€‚ ä»Šå›žã®ä»¶ã¯ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãƒŸã‚¹ã§ã‚‚ã‚«ãƒ¼ãƒãƒ«å´ã§ç„¡ç†ã‚„ã‚Šä½•ã¨ã‹ã—ã¦ã—ã¾ã†Linuxã®å®Ÿåˆ©ä¸»ç¾©ã®çœŸéª¨é ‚ãŒè¡¨ã‚ŒãŸã‚“ã˜ã‚ƒãªã„ã‹ã¨åƒ•ã¯æ€ã£ã¦ã„ã¾ã™ã€‚çš†ã•ã‚“ã¯ã©ã†æ€ã„ã¾ã™ã‹ï¼Ÿ ãã‚Œã§ã¯ã€ã©ã†ãžï¼ ãã‚Œã¯Firefoxã®ãƒ—ãƒãƒ•ãƒªãƒ¼ã‚ºå•é¡Œã‹ã‚‰å§‹ã¾ã£ãŸ ã™ã§ã«å„æ–¹é¢ã§è©±é¡Œã«ãªã£ã¦ã„ã¾ã™ãŒã€2.6.30ã®ãƒžãƒ¼ã‚¸ã‚¦ã‚£ãƒ³ãƒ‰ã‚¦ã§ext3ã®ãƒˆãƒ”ãƒƒã‚¯ãŒè’ã‚Œã«è’ã‚Œã€ã¨ã‚“ã§ã‚‚ãªã„é¨’ãŽãŒèµ·ã“ã£ã¦ã„ã¾ã—ãŸã€‚ å•é¡Œã®ç™ºç«¯ã¯ã€ã‚ã‚‹Firefoxã®bugzillaã‚¨ãƒ³ãƒˆãƒªã‹ã‚‰å§‹ã¾ã‚Šã¾ã—ãŸï¼ˆæ³¨1ï¼‰ã€‚ã€ŒLinuxç‰ˆFirefoxã‚’
kuenishi 2021/11/25
linux

kernel
ãƒªãƒ³ã‚¯
How TCP backlog works in Linux
When an application puts a socket into LISTEN state using the listen syscall, it needs to specify a backlog for that socket. The backlog is usually described as the limit for the queue of incoming connections. Because of the 3-way handshake used by TCP, an incoming connection goes through an intermediate state SYN RECEIVED before it reaches the ESTABLISHED state and can be returned by the accept s
kuenishi 2021/09/08
linux
ãƒªãƒ³ã‚¯
Download the 2020 Linux Kernel History Report
éŽåŽ»æ•°åå¹´ã«ã‚ãŸã‚ŠLinuxã¯ç€å®Ÿã«æˆé•·ã—ã€æœ€ã‚‚åºƒãä½¿ã‚ã‚Œã¦ã„ã‚‹ã‚ªãƒšãƒ¬ãƒ¼ãƒ†ã‚£ãƒ³ã‚° ã‚·ã‚¹ãƒ†ãƒ ã‚«ãƒ¼ãƒãƒ«ã«ãªã‚Šã¾ã—ãŸã€‚ã‚»ãƒ³ã‚µãƒ¼ã‹ã‚‰ã‚¹ãƒ¼ãƒ‘ãƒ¼ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ãƒ¼ã¾ã§ã€å®‡å®™èˆ¹ã€è‡ªå‹•è»Šã€ã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³/ã‚¦ã‚©ãƒƒãƒãªã©ã€ã•ã¾ã–ã¾ãªãƒ‡ãƒã‚¤ã‚¹ã§LinuxãŒä½¿ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚Linux Foundationã¯ã€2008å¹´ã« Linux Kernel Development Reports (Linuxã‚«ãƒ¼ãƒãƒ«é–‹ç™ºãƒ¬ãƒãƒ¼ãƒˆ) ã®ç™ºè¡Œã‚’é–‹å§‹ã—ã¦ä»¥æ¥ã€å„æ™‚ç‚¹ã«ãŠã‘ã‚‹é€²æ©ã‚’è¦³å¯Ÿã—ã¦ãã¾ã—ãŸã€‚ 1991å¹´ã®æœ€åˆã®ãƒªãƒªãƒ¼ã‚¹ä»¥æ¥ã€Linuxã¯2ä¸‡äººã‚’è¶…ãˆã‚‹ã‚³ãƒ³ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚¿ãƒ¼ã‚’æ“ã™ã‚‹æ´å²ä¸Šæœ€ã‚‚æˆåŠŸã—ãŸã‚³ãƒ©ãƒœãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã®ä¸€ã¤ã«ãªã‚Šã¾ã—ãŸã€‚ãƒãƒ¼ã‚¸ãƒ§ãƒ³5.8ã®æœ€è¿‘ã®ç™ºè¡¨ãŒã“ã‚Œã¾ã§æœ€ã‚‚å¤§ãã„ã‚«ãƒ¼ãƒãƒ«ã®ä¸€ã¤ã§ã‚ã‚‹ã“ã¨ã‚’è€ƒãˆã‚‹ã¨ã€æœ€æ–°ã®ãƒªãƒªãƒ¼ã‚¹ã§1æ™‚é–“ã‚ãŸã‚Š10ï¼‹ã‚³ãƒŸãƒƒãƒˆã¨ã„ã†æ–°è¨˜éŒ²ã‚’ç¤ºã™ãªã©ã€é–‹ç™ºãŒã‚¹ãƒãƒ¼ãƒ€ã‚¦ãƒ³ã™ã‚‹å…†ã—ã¯è¦‹ãˆã¾ã›ã‚“ã€‚ æœ¬ãƒ¬ãƒ
kuenishi 2020/10/01
linux

kernel
ãƒªãƒ³ã‚¯
ã‚¹ãƒ¯ãƒƒãƒ—ã®å¼è·ï¼šã‚ˆãã‚ã‚‹èª¤è§£ã‚’è§£ã
(This post is also available in English.) ã“ã®è¨˜äº‹ã¯ In defence of swap: common misconceptions ã‚’ è‘—è€…ã® Chris Down ã•ã‚“ã®è¨±å¯ ã‚’å¾—ã¦ Hiroaki Nakamura ãŒæ—¥æœ¬èªžã«ç¿»è¨³ã—ãŸã‚‚ã®ã§ã™ã€‚ åŽŸæ–‡ã®ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ ã¯ CC BY-SA 4.0 ã§ã‚ã‚Šã€ç¿»è¨³ã®ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ã‚‚åŒã˜ã CC BY 4.0 ã¨ã—ã¾ã™ã€‚ é•·æ–‡ã‚’èªã¿ãŸããªã„æ–¹ã¸ã®è¦ç´„ï¼š ã‚¹ãƒ¯ãƒƒãƒ—ã‚’æŒã¤ã“ã¨ã¯æ£ã—ãæ©Ÿèƒ½ã™ã‚‹ã‚·ã‚¹ãƒ†ãƒ ã®ã‹ãªã‚Šé‡è¦ãªãƒã‚¤ãƒ³ãƒˆã§ã™ã€‚ ã‚¹ãƒ¯ãƒƒãƒ—ãŒç„¡ã‘ã‚Œã°ã€ã¾ã¨ã‚‚ãªãƒ¡ãƒ¢ãƒªç®¡ç†ã‚’å®Ÿç¾ã™ã‚‹ã“ã¨ã¯é›£ã—ããªã‚Šã¾ã™ã€‚ ã‚¹ãƒ¯ãƒƒãƒ—ã¯ä¸€èˆ¬çš„ã«ç·Šæ€¥äº‹æ…‹ç”¨ã®ãƒ¡ãƒ¢ãƒªã‚’å–å¾—ã™ã‚‹ãŸã‚ã®ã‚‚ã®ã§ã¯ãªãã€ãƒ¡ãƒ¢ãƒªã®å›žåŽã‚’å¹³ç‰ã«åŠ¹çŽ‡çš„ã«è¡Œã†ãŸã‚ã®ã‚‚ã®ã§ã™ã€‚ å®Ÿã®ã¨ã“ã‚ã€Œç·Šæ€¥äº‹æ…‹ç”¨ã®ãƒ¡ãƒ¢ãƒªã€ã¯ä¸€èˆ¬çš„ã«ç››å¤§ã«æ‚ªå½±éŸ¿ã‚’åŠã¼ã—ã¾ã™ã€‚ ã‚¹ãƒ¯ãƒƒãƒ—ã‚’ç„¡åŠ¹ã«ã™ã‚‹ã“ã¨ã¯
kuenishi 2020/03/12
linux
ãƒªãƒ³ã‚¯
https://kernel.dk/io_uring.pdf
kuenishi 2020/01/08
"Efficient IO with io_uring" (pdf)

linux
ãƒªãƒ³ã‚¯
"SIOCSIFFLAGS: Operation not possible due to RF-kill"?
kuenishi 2019/04/11
linux
ãƒªãƒ³ã‚¯
Free Dynamic DNS(DDNS) by POP3,IMAP4,FTP,HTTP-BASIC for Home Server, VPS | MyDNS.JP
kuenishi 2017/10/28
linux
ãƒªãƒ³ã‚¯
Debian jessie ã«NVIDIAãƒ‰ãƒ©ã‚¤ãƒãƒ¼ã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ã€‚ - Cults !!
æ¯Žå›žNVIDIAã®ãƒ‰ãƒ©ã‚¤ãƒã‚’ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã—ã¦ã€Œã‚ãƒ¼é¢å€’ãã›ãƒ¼ã€ã¨ã€‚ ãƒªãƒ¼ãƒŠã‚¹å¤§å…ˆç”Ÿã®ä¸æŒ‡äº‹ä»¶ã‚’çœŸæ„ã«å—ã‘ãŸã‹ã©ã†ã‹ã¯çŸ¥ã‚‰ãªã„ãŒã€NVIDIAãŒLinuxã¸ã®ãƒ‰ãƒ©ã‚¤ãƒã‚’æ›¸ãã¨ã‹è¨€ã£ã¦ãªãŸãªãƒ¼ã¨æ€ã„ã ã—ã€ã‚°ã‚°ã‚‹ã¨ã‚ã‚Šã¾ã—ãŸãœã€‚(ã™ãå‡ºã¦ãã¾ã™w) ä»Šã¾ã§ã®NVIDIAã®ãƒ—ãƒãƒ€ã‚¯ãƒˆãƒ‰ãƒ©ã‚¤ãƒã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹æ‰‹é †ã‚ˆã‚Šã‚‚é¥ã‹ã«ç°¡å˜ã§ã€ãŠãã‚‰ãã“ã‚Œã‹ã‚‰ã‚‚ãŠä¸–è©±ã«ãªã‚‹ã ã‚ã†ã‹ã‚‰ã€å¿˜å´ã¨ã—ã¦ã€‚ 1. ã¾ãšã€ä½¿ç”¨ã—ã¦ã„ã‚‹ã‚°ãƒ©ãƒœã‚’èª¿ã¹ã¾ã™ã€‚ # lspci | grep NVIDIA 02:00.0 VGA compatible controller: NVIDIA Corporation GF116 [GeForce GTX 550 Ti] (rev a1) 02:00.1 Audio device: NVIDIA Corporation GF116 High Definition Audio Contro
kuenishi 2016/11/02
linux

debian
ãƒªãƒ³ã‚¯
SettingUpNFSHowTo - Community Help Wiki
TL;DR A much shorter guide is available in the Ubuntu Server Guide If you need more info, read below. Introduction NFS (Network File System) allows you to 'share' a directory located on one networked computer with other computers/devices on that network. The computer where directory located is called the server and computers or devices connecting to that server are called clients. Clients usually
kuenishi 2016/10/05
linux

unix
ãƒªãƒ³ã‚¯
6.4.2. ãƒ‡ãƒƒãƒ‰ãƒ©ã‚¤ãƒ³ I/O ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ©ãƒ¼ | Red Hat Product Documentation
kuenishi 2016/09/08
linux
ãƒªãƒ³ã‚¯
6.4. è¨å®š | Red Hat Product Documentation
kuenishi 2016/09/08
CFQ

linux
ãƒªãƒ³ã‚¯
6.4.3. Noop | Red Hat Product Documentation
Noop I/O ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ©ãƒ¼ã¯ã€ã‚·ãƒ³ãƒ—ãƒ«ãª FIFO (first-in first-out) ã®ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã‚’å®Ÿè£…ã—ã¾ã™ã€‚è¦æ±‚ã®ãƒžãƒ¼ã‚¸ã¯ æ±Žç”¨ãƒ–ãƒãƒƒã‚¯å±¤ã§ç™ºç”Ÿã—ã¾ã™ãŒã€ã“ã‚Œã¯ã‚·ãƒ³ãƒ—ãƒ«ãªæœ€å¾Œã«ãƒ’ãƒƒãƒˆã—ãŸã‚‚ã®ã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã§ã™ã€‚ã‚·ã‚¹ãƒ†ãƒ ãŒ CPU ã«ãƒã‚¤ãƒ³ãƒ‰ã•ã‚Œã¦ã„ã¦ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãŒé«˜é€Ÿãªå ´åˆã€ã“ã‚ŒãŒæœ€è‰¯ã® I/O ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ©ãƒ¼ã¨ãªã‚Šã¾ã™ã€‚
kuenishi 2016/09/08
linux
ãƒªãƒ³ã‚¯
PostgreSQL, NUMA and zone reclaim mode on linux
Lately we've been seeing issues with zone reclaim mode on large memory multi processor NUMA linux systems. What's NUMA? Â It's just an acronym for Non-Uniform Memory Access. Â This means that some memory in your system is more expensive for a particular CPU to access than its "local" memory. You can see how much more distant the kernel considers the different zones by using the numactl command like
kuenishi 2016/06/21
linux
ãƒªãƒ³ã‚¯
How to run program or process on specific CPU cores on Linux
Last updated on October 29, 2020 by Dan Nanni As multi-core CPUs become increasingly popular on server-grade hardware as well as end-user desktop PCs or laptops, there have been growing efforts in the community (e.g., in terms of programming models, compiler or operating system support) towards developing applications optimized for multi-core architecture. One operating system (OS) support often e
kuenishi 2016/05/26
linux
ãƒªãƒ³ã‚¯
Linux at 25: Q&A With Linus Torvalds
Linus Torvalds created the original core of the Linux operating system in 1991 as a computer science student at the University of Helsinki in Finland. Linux rapidly grew into a full-featured operating system that can now be found running smartphones, servers, and all kinds of gadgets. In this e-mail interview, Torvalds reflects on the last quarter century and what the next 25 years might bring. St
kuenishi 2016/05/23
linux
ãƒªãƒ³ã‚¯
Petter Reinholdtsen: Debian now with ZFS on Linux included
kuenishi 2016/05/19
debian

file system

linux

zfs
ãƒªãƒ³ã‚¯
What does it mean that ZFS is included in Debian?
Petter Reinholdtsen recently blogged about ZFS availability in Debian. Many people have worked hard on getting ZFS support available in Debian and we would like to thank everyone involved in getting to this point and explain what ZFS in Debian means. The landing of ZFS in the Debian archive was blocked for years due to licensing probl ems. Finally, the inclusion of ZFS was announced slightly more t
kuenishi 2016/05/19
file system

linux

debian

zfs
ãƒªãƒ³ã‚¯
Camertoto - Daftar camertoto, Login Camertoto, Link Camertoto, RTP Camertoto
kuenishi 2016/03/22
linux
ãƒªãƒ³ã‚¯
ã€ŒPCã‚’Win7ã®ã¾ã¾ã«ã—ã¦ãŠããŸã„ã®ã«å¼·åˆ¶çš„ã«Win10ã«ã™ã‚‹MSãŒå«Œã ï¼Linuxã«è¡Œãï¼ã€ã¨ã„ã†æ–¹ã¸Linuxãƒ¦ãƒ¼ã‚¶ãƒ¼ã¨ã—ã¦è¨€ã£ã¦ãŠããŸã„ã“ã¨
ã€ŒPCã‚’Win7ã®ã¾ã¾ã«ã—ã¦ãŠããŸã„ã®ã«å¼·åˆ¶çš„ã«Win10ã«ã™ã‚‹MSãŒå«Œã ï¼Macã«è¡Œãï¼ã€ã¨ã„ã†æ–¹ã¸Macãƒ¦ãƒ¼ã‚¶ãƒ¼ã¨ã—ã¦è¨€ã£ã¦ãŠããŸã„ã“ã¨ ã¨ã„ã†è¨˜äº‹ã‚’è¦‹ã‹ã‘ãŸã®ã§ã€Linux ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—ãƒ¦ãƒ¼ã‚¶ãƒ¼ã‹ã‚‰ã‚‚ä¸€è¨€ã ã‘è¨€ã£ã¦ãŠãã€‚ çµè«–ã‹ã‚‰ã€‚ ã€Œæ‚ªã„ã“ã¨ã¯è¨€ã‚ãªã„ã‹ã‚‰ã‚„ã‚ã¦ãŠã‘ï¼ã€ ä»¥å‰ã€ã„ã¾ã™ãWindowsã‚’æ¨ã¦ã¦ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—ã§GNU/Linuxã‚’ä½¿ã†10+ã®ç†ç”±ã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã‚’æ›¸ã„ãŸã“ã¨ãŒã‚ã‚‹ã®ã§ã€ä½¿ã£ã¡ã‚ƒã„ã‘ãªã„ã¿ãŸã„ãªã“ã¨ã‚’æ›¸ãã¨ã€ã€ŒãŠã„ãŠã„ã€ã„ã¾ã•ã‚‰ä½•è¨€ã£ã¦ã‚“ã ã‚ˆã€ã¨æ€ã‚ã‚Œã‚‹æ–¹ã‚‚å±…ã‚‹ã‹ã‚‚çŸ¥ã‚Œãªã„ã€‚ã ãŒã€ä»¥å‰ã®ã‚¨ãƒ³ãƒˆãƒªã®ä¸»æ—¨ã¯ã€ŒGNUã®Windowsç§»æ¤ç‰ˆã§ã‚ã‚‹Cygwinã‚’ä½¿ã†ãã‚‰ã„ã ã£ãŸã‚‰GNU/Linuxã¯ã„ã‹ãŒï¼Ÿã€ã¨ã„ã†ææ¡ˆã‚’ã™ã‚‹ãŸã‚ã®ã‚‚ã®ã§ã‚ã‚Šã€ã„ã‚ã°Cygwinã‚’ä½¿ã†ã‚ˆã†ãªIT æŠ€è¡“è€…å‘ã‘ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã§ã‚ã‚‹ã€‚CygwinãŒå¿…è¦ã ã¨ã„ã†ã“ã¨ã¯ã€UNIXãƒ©ã‚¤ã‚¯ãªãƒ„ãƒ¼ãƒ«ç¾¤ã‚’å¿…è¦ã¨ã™
kuenishi 2016/03/15
Ubuntuã¯ã”ã¡ã‚ƒã”ã¡ã‚ƒã—ã¦ã‚‹ã®ã§ã€Debian+Xfceã‚’ã‚ªã‚¹ã‚¹ãƒ¡ã—ãŸã„ã€‚stableç‰ˆã¯ã‹ãªã‚Šstableãªã®ã§ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã«æ‚©ã¾ã•ã‚Œã‚‹ã“ã¨ã‚‚å°‘ãªã„

linux
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Scaling in the Linux Networking Stack
kuenishi 2015/08/06
linux
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