[ovs-dev] [PATCH net-next v4 00/10] optimize openvswitch flow looking up

Tonghao Zhang xiangxia.m.yue at gmail.com
Tue Oct 22 01:16:12 UTC 2019


On Tue, Oct 22, 2019 at 1:14 AM William Tu <u9012063 at gmail.com> wrote:
>
> On Wed, Oct 16, 2019 at 5:50 AM <xiangxia.m.yue at gmail.com> wrote:
> >
> > From: Tonghao Zhang <xiangxia.m.yue at gmail.com>
> >
> > This series patch optimize openvswitch for performance or simplify
> > codes.
> >
> > Patch 1, 2, 4: Port Pravin B Shelar patches to
> > linux upstream with little changes.
>
> btw, should we keep Pravin as the author of the above three patches?
Agree, but how i can to that, these patches should be sent by Pravin ?
> Regards,
> William
>
> >
> > Patch 5, 6, 7: Optimize the flow looking up and
> > simplify the flow hash.
> >
> > Patch 8, 9: are bugfix.
> >
> > The performance test is on Intel Xeon E5-2630 v4.
> > The test topology is show as below:
> >
> > +-----------------------------------+
> > |   +---------------------------+   |
> > |   | eth0   ovs-switch    eth1 |   | Host0
> > |   +---------------------------+   |
> > +-----------------------------------+
> >       ^                       |
> >       |                       |
> >       |                       |
> >       |                       |
> >       |                       v
> > +-----+----+             +----+-----+
> > | netperf  | Host1       | netserver| Host2
> > +----------+             +----------+
> >
> > We use netperf send the 64B packets, and insert 255+ flow-mask:
> > $ ovs-dpctl add-flow ovs-switch "in_port(1),eth(dst=00:01:00:00:00:00/ff:ff:ff:ff:ff:01),eth_type(0x0800),ipv4(frag=no)" 2
> > ...
> > $ ovs-dpctl add-flow ovs-switch "in_port(1),eth(dst=00:ff:00:00:00:00/ff:ff:ff:ff:ff:ff),eth_type(0x0800),ipv4(frag=no)" 2
> > $
> > $ netperf -t UDP_STREAM -H 2.2.2.200 -l 40 -- -m 18
> >
> > * Without series patch, throughput 8.28Mbps
> > * With series patch, throughput 46.05Mbps
> >
> > v3->v4:
> > access ma->count with READ_ONCE/WRITE_ONCE API. More information,
> > see patch 5 comments.
> >
> > v2->v3:
> > update ma point when realloc mask_array in patch 5.
> >
> > v1->v2:
> > use kfree_rcu instead of call_rcu
> >
> > Tonghao Zhang (10):
> >   net: openvswitch: add flow-mask cache for performance
> >   net: openvswitch: convert mask list in mask array
> >   net: openvswitch: shrink the mask array if necessary
> >   net: openvswitch: optimize flow mask cache hash collision
> >   net: openvswitch: optimize flow-mask looking up
> >   net: openvswitch: simplify the flow_hash
> >   net: openvswitch: add likely in flow_lookup
> >   net: openvswitch: fix possible memleak on destroy flow-table
> >   net: openvswitch: don't unlock mutex when changing the user_features
> >     fails
> >   net: openvswitch: simplify the ovs_dp_cmd_new
> >
> >  net/openvswitch/datapath.c   |  65 +++++----
> >  net/openvswitch/flow.h       |   1 -
> >  net/openvswitch/flow_table.c | 316 +++++++++++++++++++++++++++++++++++++------
> >  net/openvswitch/flow_table.h |  19 ++-
> >  4 files changed, 329 insertions(+), 72 deletions(-)
> >
> > --
> > 1.8.3.1
> >
> > _______________________________________________
> > dev mailing list
> > dev at openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev


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