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| [http://sites.google.com/site/markusscharnowski/ My Homepage] | | [http://sites.google.com/site/markusscharnowski/ My Homepage] |
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- | [http://sites.google.com/site/oeffnungszeitenwiki/ Öffnungszeiten wiki]
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| = My maemo projects = | | = My maemo projects = |
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| http://talk.maemo.org/showpost.php?p=806769&postcount=34 | | http://talk.maemo.org/showpost.php?p=806769&postcount=34 |
| http://talk.maemo.org/showthread.php?t=48966&highlight=swappiness | | http://talk.maemo.org/showthread.php?t=48966&highlight=swappiness |
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- | ==Performance parameters==
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- | Source http://talk.maemo.org/showthread.php?p=948572#post948572
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- | ===Get the defaults===
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- | echo -n "#dirty_ratio: " ; cat /proc/sys/vm/dirty_ratio
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- | #dirty_ratio: 40
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- | echo -n "#dirty_background_ratio: " ; cat /proc/sys/vm/dirty_background_ratio
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- | #dirty_background_ratio: 10
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- | echo -n "#dirty_writeback_centisecs: " ; cat /proc/sys/vm/dirty_writeback_centisecs
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- | #dirty_writeback_centisecs: 500
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- | echo -n "#dirty_expire_centisecs: " ; cat /proc/sys/vm/dirty_expire_centisecs
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- | #dirty_expire_centisecs: 500
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- | echo -n "#min_free_kbytes: " ; cat /proc/sys/vm/min_free_kbytes
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- | #min_free_kbytes: 2039
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- | echo -n "#swappiness: " ; cat /proc/sys/vm/swappiness
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- | #swappiness: 30
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- | echo -n "#vfs_cache_pressure: " ; cat /proc/sys/vm/vfs_cache_pressure
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- | #vfs_cache_pressure: 100
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- | echo -n "#onboard_nr_requests: " ; cat /sys/block/mmcblk0/queue/nr_requests
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- | #onboard_nr_requests: 128
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- | echo -n "#sd_nr_requests: " ; cat /sys/block/mmcblk1/queue/nr_requests
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- | #sd_nr_requests: 128
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- | ===Change that stuff===
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- | echo 3 > /proc/sys/vm/dirty_ratio
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- | echo 3 > /proc/sys/vm/dirty_background_ratio
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- | echo 100 > /proc/sys/vm/dirty_writeback_centisecs
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- | echo 100 > /proc/sys/vm/dirty_expire_centisecs
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- | echo 4096 > /proc/sys/vm/min_free_kbytes
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- | echo 50 > /proc/sys/vm/swappiness
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- | echo 200 > /proc/sys/vm/vfs_cache_pressure
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- | echo 8 > /proc/sys/vm/page-cluster
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- | echo 4 > /sys/block/mmcblk0/queue/nr_requests
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- | echo 4 > /sys/block/mmcblk1/queue/nr_requests
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