[PATCH net-next 0/4] gro: micro-optimize dev_gro_receive()
flat view
STALE2058d
SUPERSEDED
From: Alexander Lobakin <hidden>
Date: 2021-03-12 16:22:52
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Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Status: Superseded by v2 (posted 2021-03-13). [go to v2]
Revision v1 (2 revisions archived).
Revisions (2)
- v1 current
- v2 [diff against previous]
This random series addresses some of suboptimal paths used in
the main GRO entry point.
The main body is patches 3-4 which simplify the code and improve
flow distribution. Two others are mostly cosmetic to make code
more readable.
The benetifs are not so huge and mostly depend on NIC RSS hash
function and a number of Rx flows per single NAPI instance. I got
something like +10-15 Mbps on 4-8 flows NATing.
Alexander Lobakin (4):
gro: give 'hash' variable in dev_gro_receive() a less confusing name
gro: don't dereference napi->gro_hash[x] multiple times in
dev_gro_receive()
gro: simplify gro_list_prepare()
gro: improve flow distribution across GRO buckets in dev_gro_receive()
net/core/dev.c | 31 ++++++++++++++-----------------
1 file changed, 14 insertions(+), 17 deletions(-)
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2.30.2