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