Messages in this thread | | | Date | Tue, 07 Jun 2016 14:46:33 -0700 (PDT) | Subject | Re: [PATCH V3 1/2] vhost_net: stop polling socket during rx processing | From | David Miller <> |
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From: Jason Wang <jasowang@redhat.com> Date: Wed, 1 Jun 2016 01:56:33 -0400
> We don't stop rx polling socket during rx processing, this will lead > unnecessary wakeups from under layer net devices (E.g > sock_def_readable() form tun). Rx will be slowed down in this > way. This patch avoids this by stop polling socket during rx > processing. A small drawback is that this introduces some overheads in > light load case because of the extra start/stop polling, but single > netperf TCP_RR does not notice any change. In a super heavy load case, > e.g using pktgen to inject packet to guest, we get about ~8.8% > improvement on pps: > > before: ~1240000 pkt/s > after: ~1350000 pkt/s > > Signed-off-by: Jason Wang <jasowang@redhat.com>
Applied.
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