マルãƒã‚¹ãƒ¬ãƒƒãƒ‰ãªã‚‰ pwrite より mmap+msync ã®ãŒé€Ÿã„ (or Q4M ã®ãƒ‘フォーマンスã®é™ç•Œå€¤ã«åˆ°é”) ã¨ã„ã†è©± - kazuhoã®ãƒ¡ãƒ¢ç½®ãå ´è‰²ã€…ãƒ¦ãƒ¼ã‚¶ãƒ©ãƒ³ãƒ‰ã§ã®ãƒãƒƒã‚¯ã‚’使ã‚ãªã„å½¢ã«æ›¸ãæ›ãˆã¦ã‚‚ã€ãªã‹ãªã‹é€Ÿããªã‚‰ãªã‹ã£ãŸã®ãŒã€pwrite ã‚’ã‚„ã‚㦠mmap(PROT_WRITE) 経由ã§ã®æ›¸ãè¾¼ã¿ã«ã—ãŸã‚‰ã€20% 程度ã‚ã£ãŸ idle time ㌠0 ã«ãªã£ãŸã€‚ ベンãƒãƒžãƒ¼ã‚¯çš„ã«ã¯ã“ã‚“ãªæ„Ÿã˜ã€‚上㌠pwrite 経由。下㌠msync(MS_ASYNC) 経由ã®æ›¸ãè¾¼ã¿ã€‚ã©ã¡ã‚‰ã‚‚èªã¿è¾¼ã¿ã¯ mmap。 $ USE_C_CLIENT=1 MESSAGES=400000 CONCURRENCY=40 DBI='dbi:mysql:test;mysql_socket=/tmp/mysql51.sock;user=root' t/05-multireader.t 1..4 ok 1 - check number of messages ok 2 - min value of received message ok 3 - max v
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