tcp: halves tcp_mem[] limits

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Allowing tcp to use ~19% of physical memory is way too much,
and allowed bugs to be hidden. Add to this that some drivers use a full
page per incoming frame, so real cost can be twice the advertized one.

Reduce tcp_mem by 50 % as a first step to sanity.

tcp_mem[0,1,2] defaults are now 4.68%, 6.25%, 9.37% of physical memory.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2015-05-15 12:39:30 -07:00 • committed by David S. Miller

parent 76dfa60820

commit b66e91ccbc

1 changed files with 5 additions and 4 deletions

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net/ipv4/tcp.c

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