On 11/25/20 12:35 PM, Ido Schimmel wrote:
> Example:
>
> 8k IPv6 routes were added in an alternating manner to two VRFs. All the
> routes are using the same nexthop object ('nhid 1').
>
> Before:
>
> # perf stat -e devlink:devlink_hwmsg --filter='incoming==0' -- ip nexthop
> replace id 1 via 2001:db8:1::2 dev swp3
>
> Performance counter stats for 'ip nexthop replace id 1 via 2001:db8:1::2 dev
> swp3':
>
> 16,385 devlink:devlink_hwmsg
>
> 4.255933213 seconds time elapsed
>
> 0.000000000 seconds user
> 0.666923000 seconds sys
>
> Number of EMAD transactions corresponds to number of routes using the
> nexthop group.
>
> After:
>
> # perf stat -e devlink:devlink_hwmsg --filter='incoming==0' -- ip nexthop
> replace id 1 via 2001:db8:1::2 dev swp3
>
> Performance counter stats for 'ip nexthop replace id 1 via 2001:db8:1::2 dev
> swp3':
>
> 3 devlink:devlink_hwmsg
>
> 0.077655094 seconds time elapsed
>
> 0.000000000 seconds user
> 0.076698000 seconds sys
>
> Number of EMAD transactions corresponds to number of VRFs / VRs.
wow, that is a huge difference - a good example of the efficiencies the
nexthop model allows.
