Given how many Vms any hypervisor can respectably service, even if one
bridge is dedicated to VM (I know there not much use to this type of
connectivity); even a hundered or few more bridges is unrealistic. So I
guess we may not have to worry too much about the limit.

Thanks for a quick assist Shetty.



On 9/19/13 12:41 PM, "Gurucharan Shetty" <shet...@nicira.com> wrote:

>On Thu, Sep 19, 2013 at 10:28 AM, Faisal Ali <justhu...@gmail.com> wrote:
>> Hi,
>>
>> How many bridges can a openvswitch have. Is there a hard limit.
>
>From ovs-vswitchd man page:
>              ovs-vswitchd  started  through  ovs-ctl(8)  provides a
>limit of 7500 file descriptors.  The limits on the number of
>              bridges and ports is decided by the availability of file
>descriptors.  With the Linux kernel datapath, creation  of
>              a single bridge consumes 3 file descriptors and adding a
>port consumes 1 file descriptor.  Performance will degrade
>              beyond 1,024 ports per bridge due to fixed hash table
>sizing.  Other platforms may have different limitations.
>
>>
>> Thanks
>> Faisal Ali
>>
>> _______________________________________________
>> discuss mailing list
>> discuss@openvswitch.org
>> http://openvswitch.org/mailman/listinfo/discuss


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