This patch series provides about 100 % performance increase under flood.
v2: added Paolo feedback on udp_rmem_release() for tiny sk_rcvbuf
added the last patch touching sk_rmem_alloc later
Eric Dumazet (4):
udp: add busylocks in RX path
udp: copy skb->truesize in the first cache line
udp: add batching to udp_rmem_release()
udp: udp_rmem_release() should touch sk_rmem_alloc later
include/linux/skbuff.h | 9 ++++++-
include/linux/udp.h | 3 +++
net/ipv4/udp.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++----
3 files changed, 77 insertions(+), 6 deletions(-)
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2.8.0.rc3.226.g39d4020
