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Redouane Boumghar wrote: |
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> |
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> The man is not very extensive. |
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> Has Anyone more info on configuration of the file /etc/sysctl.conf ? |
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> especially for : |
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> vm.swappiness |
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> vm.swap_token_timeout |
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> |
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> |
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|
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Actually using sysctl is the same as reading/writing values from/in the |
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files found in /proc. For example putting "vm.swappiness = 50" in |
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/etc/sysctl.conf and executing "sysctl -p" afterwards is the same as |
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"echo 50 > /proc/sys/vm/swappiness". The deference is that sysctl is |
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being issued at every boot and it restores the values as thy are set in |
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sysctl.conf by the administrator. Otherwise the kernel uses the default |
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values. |
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|
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While "swap_token_timeout" is documented in two files [1],[2] from the |
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"kernel-source-code/Documentation" directory, it appears that swappiness |
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isn't documented at all. At least "grep -rin swappiness Documentation/" |
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didn't give any results for gentoo-sources-2.6.18-r4 |
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I've read (don't remember where) there are patches to make kernel change |
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its swappiness value automatically, depending on the memory usage for |
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the particular moment. |
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|
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[1] /usr/src/linux/Documentation/sysctl/vm.txt |
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[2] /usr/src/linux/Documentation/filesystems/proc.txt |
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|
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-- |
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Best regards, |
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Daniel |
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|
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|
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-- |
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