Linuxã®LVS(IPVS)ã§MySQLã‚’ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚¹ã™ã‚‹ã¨ãã¯timeoutã«æ³¨æ„ - （ã²ï¼‰ãƒ¡ãƒ¢æ§‹æˆ [appサーãƒ] -> [lvs] -> [MySQL]群 DRã§MySQLã®ã‚¹ãƒ¬ãƒ¼ãƒ–群ã«ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚¹ appサーãƒã¯DBコãƒã‚¯ã‚·ãƒ§ãƒ³ã®ãƒ—ーリングã€æ°¸ç¶šåŒ–ã‚’ã—ã¦ã„ã‚‹ å•é¡Œã®ç¾è±¡ DBサーãƒä¸Šã§ã¯mysqldã¸ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒå˜åœ¨ã™ã‚‹ã®ã«ã€appサーãƒä¸Šã§ã¯ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒå˜åœ¨ã—ãªã„。(netstat調ã¹) →無用ãªã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒæ®‹ç•™ã™ã‚‹ã›ã„ã§ã€MySQLã®max_connectionsã«é”ã—ã¦ã—ã¾ã†ã€‚ åŽŸå› MySQLã®ä¸–ç•Œã®ç„¡é€šä¿¡æ™‚ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã®ã‚¿ã‚¤ãƒ アウトã¯ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ 28800秒 (8時間)。一方ã€IPVSã®ä¸–ç•Œã®ç„¡é€šä¿¡æ™‚ã®ã‚¿ã‚¤ãƒ アウトã¯ESTABLISHEDãªã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã§900秒 (15分)。 # ipvsadm -Ln --timeout Timeout (tcp tcpfin udp): 900 120 300ãªã®ã§ã€DBコãƒã‚¯ã‚·ãƒ§ãƒ³ã®æ°¸ç¶šåŒ–ç‰ã§ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’張りã£
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Transparent HugepageTransparent Hugepage SupportSupport Red Hat Inc. Andrea Arcangeli aarcange at redhat.com KVM Forum 2010 Boston 9 Aug 2010 Copyright © 2010 Red Hat Inc. Benefit of hugepagesBenefit of hugepages ➢ Enlarge TLB size ➢ TLB is separate
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Unbound - About
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日本Unboundユーザー会
本をèªã‚€ DNSサーãƒãƒ¼ã®Unboundを使ã£ã¦ã¿ãŸãƒ¡ãƒ¢
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