sysctl.d/12309.conf added
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# swap usage (default = 60)
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vm.swappiness = 5
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# http://www.linux.org.ru/wiki/en/User:shimon/12309
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# reduce memory size allowed to process (default = 0 )
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vm.overcommit_memory = 2
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# memory allowed to process: total_swap + total_ram * overcommit_ratio / 100 (default = 50 )
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vm.overcommit_ratio = 80
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# disk buffer size (default = 0 )
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vm.dirty_bytes = 2097152
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# disk buffer size (default = 0 )
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vm.dirty_background_bytes = 2097152
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# (default = 100)
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vm.vfs_cache_pressure = 50
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# For old kernels <2.6.30 (default = 40)
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#vm.dirty_ratio = 3
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# For old kernels <2.6.30 (default = 10)
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#vm.dirty_background_ratio = 3
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# -- more 12309 tricks --
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# (default = 3000)
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vm.dirty_expire_centisecs = 1000
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# (default = 500)
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vm.dirty_writeback_centisecs = 200
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