Hi,
I did not find any documented limit about the number of patchports, so I
wrote a simple script, which adds a predefined number of patchports and
some dummy rules into the flow tables to actually have some reason for
the whole stuff.
First, I tried to add 100 and 1000 patchports between two OVS bridges.
It was feasible, but took some time.
Then I tried with 10000 patchports, but I couldn't wait until it
finished. After 1000 patchports, the adding procedure became slower and
slower, so I killed the whole process (after a couple of thousands
patchports the time OVS required for setting up one patchport was around
a couple of seconds).
So, as a conclusion, the question should be about its setup time. I
don't know what your actual scenario is, but if you plan to create more
patchports than a 1000, then there are a lot of other issues around it
besides the number of possible patchports (setup time could last to half
a day. What about the number of rules, will they fit? And update time
becomes also an interesting part of such a 'networking architecture').
Nevertheless, I did this investigation on an Intel(R) Xeon(R) CPU
E5-2620 0 @ 2.00GHz (6 cores + 6 HT cores), with 64G RAM, and
OVS-VSWITCHD was consuming all the physical cores I had.
I hope I may have helped (at least a little bit :)).
Cheers,
Levente
On 06/29/2016 07:04 PM, Kapil Adhikesavalu wrote:
Hi,
is there a limit on maximum number of patch ports between bridges ?
Thanks
Kapil.
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