[ovs-dev] [PATCH] ofproto: Remove per-flow miss hash table from upcall handler.

Joe Stringer joestringer at nicira.com
Wed May 21 03:46:50 UTC 2014

Perhaps they didn't, then :-)

Could you test out this patch and let me know if it fixes the issue?

On 21 May 2014 15:34, Ryan Wilson 76511 <wryan at vmware.com> wrote:

>  I recently reproduced this today on servers109/110, using master branch
> with HEAD = 5a87054c2d832d0e10b30a1f223707acb8efbeb7. This commit is from
> yesterday, so it includes your fix
> (73a3c4757e596ff156d40f41496a0264373e5bc4).
>  Ryan
>   From: Joe Stringer <joestringer at nicira.com>
> Date: Tuesday, May 20, 2014 7:06 PM
> To: Ryan Wilson <wryan at vmware.com>
> Cc: Alex Wang <alexw at nicira.com>, "dev at openvswitch.org" <
> dev at openvswitch.org>, Ryan Wilson <wryan at nicira.com>
> Subject: Re: [ovs-dev] [PATCH] ofproto: Remove per-flow miss hash table
> from upcall handler.
>    On 20 May 2014 17:25, Ryan Wilson <wryan at vmware.com> wrote:
>> Ok turns out my Openflow rules weren't totally correct (they were
>> flooding all ports like a hub instead of forwarding properly). After
>> adjusting them, I achieved equivalent performance with and without my
>> upcall patch (both achieved 161-162 trans/second). I'll submit my other
>> version of the patch.
>>  I also took a closer look at the ovs-vswitch.log and saw this error
>> occasionally when running with the up call patch:
>> 2014-05-19T21:21:23.240Z|00014|dpif(revalidator97)|WARN|system at ovs-system:
>> failed to flow_del (No such file or directory)
>> dp_hash(0),recirc_id(0),skb_priority(0),in_port(4),skb_mark(0),eth(src=a0:36:9f:33:3a:c0,dst=a2:2e:02:45:b6:14),eth_type(0x0800),ipv4(src=,dst=,proto=6,tos=0,ttl=64,frag=no),tcp(src=54622,dst=41606),tcp_flags(0x010)
>  Hmm, that's odd. What version of userspace and what version of
> kernelspace were you running?
>  I pushed some patches a couple of days ago that should prevent this.
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