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| author |   Eric Dumazet <edumazet@google.com> | 2016-04-13 22:05:40 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-04-15 16:45:44 -0400 |
| commit | 8804b2722dc5d6f9b7ba0a9e812eae9ee5ce95bc (patch) | |
| tree | fd1010fca7c152ca547f02d80a02dc9d1b9d7b20 /samples/Kconfig | |
| parent | tcp: do not mess with listener sk_wmem_alloc (diff) | |
| download | linux-dev-8804b2722dc5d6f9b7ba0a9e812eae9ee5ce95bc.tar.xz linux-dev-8804b2722dc5d6f9b7ba0a9e812eae9ee5ce95bc.zip | |
tcp: remove false sharing in tcp_rcv_state_process()
Last known hot point during SYNFLOOD attack is the clearing
of rx_opt.saw_tstamp in tcp_rcv_state_process()
It is not needed for a listener, so we move it where it matters.
Performance while a SYNFLOOD hits a single listener socket
went from 5 Mpps to 6 Mpps on my test server (24 cores, 8 NIC RX queues)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/Kconfig')
0 files changed, 0 insertions, 0 deletions