On Wed, Jun 27, 2018 at 05:02:31PM +0200, Eelco Chaudron wrote: > > > On 27 Jun 2018, at 16:09, Ben Pfaff wrote: > > >On Wed, Jun 27, 2018 at 01:24:25PM +0200, Eelco Chaudron wrote: > >>In field deployments of OVS (mostly in combination with OpenStack) we > >>see that the 2K default MAC forwarding table is too small. > >> > >>On average this tables is around 5k entries, hence this patch to > >>increase the default value to the next power of 2, i.e. 8K. > >> > >>This increase in size does not automatically increase the memory > >>footprint, as the memory for the MAC entries, are allocated only when > >>needed. > >> > >>Signed-off-by: Eelco Chaudron <[email protected]> > > > >Applied, thanks! > > Ben thanks for applying so quickly, however, I seem to have messed up the > number :( > > 5K, was 50K (I counted zero’s wrong), which leads to 64K entries by default. > > This might make other people more opposed to the change, as it could result > in a lot of memory being eaten when someone does a MAC sweep (attack), > around 4Mbyte per bridge. > > Any input here?
64k does seem like a lot. Maybe OpenStack deployments should just set the configuration value in the database to whatever they really need? _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
