Re: [PATCH net-next] selftests: net: give up on the cmsg_time accuracy on slow machines

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Jakub Kicinski wrote:
> Commit b9d5f5711dd8 ("selftests: net: increase the delay for relative
> cmsg_time.sh test") widened the accepted value range 8x but we still
> see flakes (at a rate of around 7%).
> 
> Return XFAIL for the most timing sensitive test on slow machines.
> 
> Before:
> 
>   # ./cmsg_time.sh
>     Case UDPv4  - TXTIME rel returned '8074us - 7397us < 4000', expected 'OK'
>   FAIL - 1/36 cases failed
> 
> After:
> 
>   # ./cmsg_time.sh
>     Case UDPv4  - TXTIME rel returned '1123us - 941us < 500', expected 'OK' (XFAIL)
>     Case UDPv6  - TXTIME rel returned '1227us - 776us < 500', expected 'OK' (XFAIL)
>   OK
> 
> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>

Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>




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