net: set SK_MEM_QUANTUM to 4096

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Systems with large pages (64KB pages for example) do not always have
huge quantity of memory.

A big SK_MEM_QUANTUM value leads to fewer interactions with the
global counters (like tcp_memory_allocated) but might trigger
memory pressure much faster, giving suboptimal TCP performance
since windows are lowered to ridiculous values.

Note that sysctl_mem units being in pages and in ABI, we also need
to change sk_prot_mem_limits() accordingly.

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

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Eric Dumazet 2016-10-31 13:32:55 -07:00 • committed by David S. Miller

parent a13925a46e

commit bd68a2a854

1 changed files with 17 additions and 6 deletions

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23

include/net/sock.h

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