Eric Dumazet 425f09ab7d net: output path optimizations ... 1) Avoid dirtying neighbour's confirmed field. TCP workloads hits this cache line for each incoming ACK. Lets write n->confirmed only if there is a jiffie change. 2) Optimize neigh_hh_output() for the common Ethernet case, were hh_len is less than 16 bytes. Replace the memcpy() call by two inlined 64bit load/stores on x86_64. Bench results using udpflood test, with -C option (MSG_CONFIRM flag added to sendto(), to reproduce the n->confirmed dirtying on UDP) 24 threads doing 1.000.000 UDP sendto() on dummy device, 4 runs. before : 2.247s, 2.235s, 2.247s, 2.318s after : 1.884s, 1.905s, 1.891s, 1.895s Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-08-07 16:24:55 -07:00
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acpi
asm-generic
crypto
drm
keys
linux	net: reorganize IP MIB values	2012-08-06 13:40:47 -07:00
math-emu
media
memory
misc
mtd
net	net: output path optimizations	2012-08-07 16:24:55 -07:00
pcmcia
ras
rdma
rxrpc
scsi
sound	Sound fixes for 3.6-rc1	2012-08-01 10:42:26 -07:00
target
trace	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-31 19:25:39 -07:00
video
xen
Kbuild