Hi Alice, On 14/08/2026 21:41, Alice Mikityanska wrote: > From: Alice Mikityanska <[email protected]> > > CONFIG_DEBUG_NET kernels run slower and generate fewer BIG TCP packets, > making the test flaky on upstream CI runners. Lower the default > threshold for those kernels.
Thank you for looking at that! > Signed-off-by: Alice Mikityanska <[email protected]> > --- > tools/testing/selftests/net/big_tcp_tunnels.sh | 18 ++++++++++++++++-- > 1 file changed, 16 insertions(+), 2 deletions(-) > > diff --git a/tools/testing/selftests/net/big_tcp_tunnels.sh > b/tools/testing/selftests/net/big_tcp_tunnels.sh > index 9b7d0456bcc1..e27774eae20e 100755 > --- a/tools/testing/selftests/net/big_tcp_tunnels.sh > +++ b/tools/testing/selftests/net/big_tcp_tunnels.sh > @@ -17,11 +17,25 @@ CLIENT_IP6="2001:db8::1:2" > CLIENT_IP4_TUN="192.168.2.2" > CLIENT_IP6_TUN="2001:db8::2:2" > > -: "${PACKETS_THRESHOLD:=1000}" > - > # Kselftest framework requirement - SKIP code is 4. > ksft_skip=4 > > +is_debug() { > + local config="/proc/config.gz" > + [ -f "$config" ] || config="/boot/config-$(uname -r)" > + [ -f "$config" ] || return 1 # No config found; assume non-debug. > + gzip -dcfq "$config" | grep -qx 'CONFIG_DEBUG_NET=y' || return 1 Are you sure it is CONFIG_DEBUG_NET that causes that? It shouldn't be that heavy. Do you not want to change the thresholds only for the -dbg runners using kernel/configs/debug.config? If yes, you should check if KSFT_MACHINE_SLOW == yes: https://github.com/linux-netdev/nipa/wiki/How-to-run-netdev-selftests-CI-style#dealing-with-slow-runners-in-performancelatency-tests Cheers, Matt -- Sponsored by the NGI0 Core fund.
