Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests: net: packetdrill: xfail all problems on slow machines
We keep seeing flakes on packetdrill on debug kernels, while
non-debug kernels are stable, not a single flake in 200 runs.
Time to give up, debug kernels appear to suffer from 10msec
latency spikes and any timing-sensitive test is bound to flake.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250801181638.2483531-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+1
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+1
-18
tools/testing/selftests/net/packetdrill/ksft_runner.sh
+1
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tools/testing/selftests/net/packetdrill/ksft_runner.sh
···
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if [[ -n "${KSFT_MACHINE_SLOW}" ]]; then
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optargs+=('--tolerance_usecs=14000')
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-
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# xfail tests that are known flaky with dbg config, not fixable.
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# still run them for coverage (and expect 100% pass without dbg).
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declare -ar xfail_list=(
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"tcp_blocking_blocking-connect.pkt"
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"tcp_blocking_blocking-read.pkt"
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"tcp_eor_no-coalesce-retrans.pkt"
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"tcp_fast_recovery_prr-ss.*.pkt"
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"tcp_sack_sack-route-refresh-ip-tos.pkt"
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"tcp_slow_start_slow-start-after-win-update.pkt"
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"tcp_timestamping.*.pkt"
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"tcp_user_timeout_user-timeout-probe.pkt"
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"tcp_zerocopy_cl.*.pkt"
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"tcp_zerocopy_epoll_.*.pkt"
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"tcp_tcp_info_tcp-info-.*-limited.pkt"
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)
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readonly xfail_regex="^($(printf '%s|' "${xfail_list[@]}"))$"
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[[ "$script" =~ ${xfail_regex} ]] && failfunc=ktap_test_xfail
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+
failfunc=ktap_test_xfail
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fi
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ktap_print_header