What the following command states

[Valdis.Kletnieks at vt.edu]

On Tue, 29 Oct 2013 18:04:38 +0530, Robert Clove said:

> cat /proc/sys/net/ipv4/tcp_mem
>
> when i run the above command i get the following output
> 6182880 8243840 12365760
>
>
> What these value states?

from Documentation/networking/ip-sysctl.txt

tcp_mem - vector of 3 INTEGERs: min, pressure, max
        min: below this number of pages TCP is not bothered about its
        memory appetite.

        pressure: when amount of memory allocated by TCP exceeds this number
        of pages, TCP moderates its memory consumption and enters memory
        pressure mode, which is exited when memory consumption falls
        under "min".

        max: number of pages allowed for queueing by all TCP sockets.

        Defaults are calculated at boot time from amount of available
        memory.


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