vxlan: reduce dirty cache line in vxlan_find_mac

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vxlan_find_mac() unconditionally set f->used for every packet,
this causes a cache miss for every packet, since remote, hlist
and used of vxlan_fdb share the same cache line, which are
accessed when send every packets.

so f->used is set only if not equal to jiffies, to reduce dirty
cache line times, this gives 3% speed-up with small packets.

Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Li RongQing 2018-08-29 11:52:10 +08:00 • committed by David S. Miller

parent 920767a9c8

commit 016f3d1818

1 changed files with 1 additions and 1 deletions

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drivers/net/vxlan.c

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