On Sat, Sep 06, 2025 at 02:45:35PM -0700, Jakub Kicinski wrote: > The pmtu test takes nearly an hour when run on a debug kernel > (10min on a normal kernel, so the debug slow down is quite significant). > NIPA tries to ensure all results are delivered by a certain deadline > so this prevents it from retrying the test in case of a flake. > > Looks like one of the slowest operations in the test is calling out > to ./openvswitch/ovs-dpctl.py to remove potential leftover OvS interfaces. > Check whether the interfaces exist in the first place in sysfs, > since it can be done directly in bash it is very fast. > > This should save us around 20-30% of the test runtime. > > Signed-off-by: Jakub Kicinski <[email protected]>
It would be interesting to know why this is so slow. But I agree that avoiding unnecessary work is a good approach if it is slow. And that appears to be the case. Reviewed-by: Simon Horman <[email protected]>
