[Bridge] [PATCH 07/17] net: convert sock.sk_refcnt from atomic_t to refcount_t
eric.dumazet at gmail.com
Mon Mar 20 16:34:44 UTC 2017
On Mon, 2017-03-20 at 09:18 -0700, Eric Dumazet wrote:
> UDP ipv4 xmit path gets a ~25 % improvement on PPC with this patch.
> ( 20 concurrent netperf -t UDP_STREAM : 2.45 Mpps -> 3.07 Mpps )
Well, there _is_ a difference, but not 25 % (this was probably caused by
different queues on TX or RX between my reboots).
I added a sysctl hack to be able to dynamically change on a given
workload, and we hit other bottlenecks (mainly qdisc locks and driver tx
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