On Thu, Jul 11, 2013 at 10:22 AM, Ben Pfaff <b...@nicira.com> wrote: > On Thu, Jul 11, 2013 at 09:37:45AM -0700, Gurucharan Shetty wrote: > > Signed-off-by: Gurucharan Shetty <gshe...@nicira.com> > > I'm not sure it's worth mentioning the 65,280 port limit, because it's > about the same as the maximum number of file descriptors. > > At first thought, these limits seemed Linux specific, but I think that > FreeBSD also needs a file descriptor per port (for a pcap handle), so > maybe it's not worth saying that it is Linux specific. The final note > about performance beyond 1,024 ports is definitely specific to the > Linux kernel datapath though. > Okay. How about the following wording?
ovs-vswitchd started through ovs-ctl provides a limit of 5000 file descriptors. Creation of a single bridge consumes 3 file descriptors and adding a port consumes 1 file descriptor. The limits on the number of bridges and ports is decided by the availability of file descriptors. (For Linux kernel datapath, performance will degrade beyond 1,024 ports per bridge due to fixed hash table sizing.) > > Thanks, > > Ben. >
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