CSIT/TestFailuresTracking

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CSIT Test Failure Clasification

All known CSIT failures grouped and listed in the following order:

  • Always failing followed by sometimes failing.
  • Always failing tests:
    • Most common use cases followed by less common.
  • Sometimes failing tests:
    • Most frequently failing followed by less frequently failing.
      • High frequency 50%-100%
      • medium frequency 10%-50%
      • low frequency 0%-10%.
    • Within each sub-group: most common use cases followed by less common.

CSIT Test Fixing Priorities

  • Test fixing work priorities defined as follows
    • (H)igh priority, most common use cases and most common test code.
    • (M)edium priority, specific HW and pervasive test code issue.
    • (L)ow priority, corner cases and external dependencies.

Always Failing Tests

In Trending

(M) 3n-alt: Tests failing until 40Ge Interface comes up

(M) 3n-snr: All hwasync wireguard tests failing when trying to verify device

  • (M) 3n-snr: All hwasync wireguard tests failing when trying to verify device
    • work-to-fix: hard
    • rca: Failed to bind PCI device 0000:f4:00.0 to c4xxx on host 10.30.51.93
    • test: hwasync wireguard
    • frequency: always
    • testbed: 3n-snr
    • example: 3n-snr
    • ticket: CSIT-1883
    • note: missing QAT driver.

(M) 1n-aws: TRex mlrsearch fails to find NDR & PDR due to AWS rate limiting (5min total test duration)

  • (M) 1n-aws: TRex NDR PDR ALL IP4 scale and L2 scale tests failing with 50% packet loss
    • work-to-fix: hard
    • rca:
    • test: ip4scale2m
    • frequency: always
    • testbed: 1n-aws
    • example: 1n-aws
    • ticket: CSIT-1876
    • note: The root cause can be shared environment in aws cloud.

(M) 3n-alt, 3n-snr: testpmd no traffic forwarded

  • (M) 3n-alt, 3n-snr: testpmd tests fail with no traffic
    • work-to-fix: hard
    • rca:
    • test: testpmd
    • frequency: always
    • testbed: 3n-alt, 3n-snr
    • example: 3n-alt, 3n-snr, 3n-snr
    • ticket: CSIT-1848
    • note:

not in trending

(H) 3n-icx: vpp hoststack QUIC vppecho tests failing

  • (H) 3n-icx: QUIC vppecho BPS tests failing on timeout when checking hoststack finished
    • work-to-fix: easy
    • rca:
    • test: Quic vppecho BPS
    • frequency: always
    • testbed: 3n-skx, 3n-icx
    • example: 3n-icx
    • ticket: CSIT-1835
    • note:

(M) all testbeds: vpp 9000B tests with vhostuser, memif, tunnels, avf

  • 9000B payload frames not forwarded over tunnels due to violating supported Max Frame Size (VxLAN, LISP, SRv6)
  • (M) 3n-icx: 9000b ip4 ip6 l2 NDRPDR AVF tests are failing to forward traffic
    • work-to-fix: hard
    • rca:
    • test: 9000B - IP4, IP6, l2 - base and scale
    • frequency: always
    • testbed: 3n-icx
    • examples: 3n-icx ip4base
    • ticket: CSIT-1885
    • note:
  • (M) 2n-clx, 2n-icx, 2n-zn2: DPDK testpmd 9000b tests on xxv710 nic are failing with no traffic
    • work-to-fix: hard
    • rca:
    • test: DPDK testpmd 9000b tests on xxv710 nic
    • frequency: always
    • testbed: 2n-clx, 2n-icx, 2n-zn2
    • example: 2n-clx, 2n-icx
    • ticket: CSIT-1870
    • note:

(M) 2n-clx, 2n-icx: all Geneve tests with 1024 tunnels fail

  • (M) All Geneve L3 mode scale tests (1024 tunnels) are failing
    • work-to-fix: hard
    • rca: VPP crash, Failed to add IP neighbor on interface geneve_tunnel258
    • test: avf-ethip4--ethip4udpgeneve-1024tun-ip4base 64B 1518B IMIX 1c 2c 4c
    • frequency: always
    • testbed: 2n-skx, 2n-clx, 2n-icx
    • example: 2n-icx
    • ticket: CSIT-1800
    • note:

(L) 2n-clx, 2n-icx: nat44ed cps 16M sessions scale fail

  • (L) All NAT44-ED 16M sessions CPS scale tests fail while setting NAT44 address range.
    • work-to-fix: hard
    • rca: VPP crash, Failed to set NAT44 address range on host 10.30.51.44 (connections-per-second tests only)
    • test: 64B-avf-ethip4tcp-nat44ed-h262144-p63-s16515072-cps-ndrpdr 1c 2c 4c, 64B-avf-ethip4udp-nat44ed-h262144-p63-s16515072-cps-ndrpdr 1c 2c 4c
    • frequency: always
    • testbeds: 2n-skx, 2n-clx, 2n-icx
    • example: 2n-icx, 2n-clx
    • ticket: CSIT-1799
    • note:

(L) 2n-clx, 2n-icx: nat44det imix 1M sessions fails to create sessions

  • (L) 2n-clx, 2n-icx: All NAT44DET NDR PDR IMIX over 1M sessions BIDIR tests failing to create enough sessions
    • work-to-fix: hard
    • rca:
    • test: IMIX over 1M sessions bidir
    • frequency: always
    • testbed: 2n-skx, 2n-clx, 2n-icx
    • example: 2n-icx
    • ticket: CSIT-1884
    • note:

Sometimes failing tests

in trending - high frequency failures

(H) 2n-icx: NFV density VPP does not start in container

  • (H) 2n-icx: NFV density tests breaks VPP which fails to start (re-opened)
    • work-to-fix: hard
    • rca:
    • test: all subsequent
    • frequency: medium
    • testbed: 2n-icx
    • example: 2n-icx mrr, 2n-icx ndrpdr
    • ticket: CSIT-1881
    • note: Once VPP breaks, all subsequent tests fail. Even all subsequent builds will be failing until Peter makes TB working again. Although it's failing with medium frequency when it happens it breaks all subsequent builds on the TB therefore [H] priority.

(M) 2n-clx: e810 mlrsearch tests packets forwarding in one direction

  • (M) 2n-clx: half of the packets lost on PDR tests (re-opened)
    • work-to-fix: hard
    • rca:
    • test: e810Cq ip4base, ip6base
    • frequency: high
    • testbed: 2n-clx
    • example: 2n-clx
    • ticket: CSIT-1864
    • note:

(M) 3n-icx: wireguard 100 and 1000 tunnels mlrsearch tests failing with 2c and 4c

  • (M) 3n-icx: Wireguard tests with 100 and more tunnels are failing PDR criteria
    • work-to-fix: easy
    • rca:
    • test: wireguard 100 tunnels and more
    • frequency: high
    • testbed: 3n-icx
    • examples: 3n-icx
    • ticket: CSIT-1886
    • note:

(M) 3n-tsh: vpp in VM not starting

  • (M) 3n-tsh: VM tests failing to boot VM
    • work-to-fix: easy
    • rca:
    • test: 3n-tsh: sporadic VM vhost
    • frequency: high
    • testbed: 3n-tsh
    • example: 3n-tsh, 3n-tsh
    • ticket: CSIT-1877
    • note: 3n-alt testbed was fixed. 3n-tsh still failing. fixed: by rebuild initrd .37 on TB,

in trending - lower frequency failures

(M) 3n-icx, 3n-snr: 1518B IPsec packets not passing

  • (M) 3n-icx, 3n-skx, 3n-snr: all 1518B AVF crypto tests failed with no traffic, all IMIX AVF crypto with excessive packet loss

(M) all testbeds: mlrsearch fails to find NDR rate

  • (M) 3n-tsh, 3n-alt, 2n-clx testbed (Taishan, Altra, Cascade-lake): NDR tests failing from time to time.
    • work-to-fix: hard
    • rca:
    • test: Crypto, Ip4, L2, Srv6, Vm Vhost (all packet sizes, all core configurations affected)
    • frequency: low
    • testbed: 3n-tsh, 3n-alt, 2n-clx
    • example: 2n-icx
    • ticket: CSIT-1804
    • note:

(M) all testbeds: AF_XDP mlrsearch fails to find NDR rate

  • (M) all testbeds: AF-XDP - NDR tests failing from time to time
    • work-to-fix: hard
    • rca:
    • test: af-xdp multicore tests
    • frequency: low
    • testbed: 2n-clx, 2n-skx, 2n-tx2, 2n-icx
    • example: 2n-skx, 2n-clx
    • ticket: CSIT-1802
    • note: This is mainly observed in iterative and coverage. It's very low frequency ~ 1 out of 100

(L) all testbeds: vpp create avf interface failure in multi-core configs

  • (L) multicore AVF tests are failing when trying to create interface
    • work-to-fix: hard
    • rca: issue in Intel FVL driver
    • test: multicore AVF
    • frequency: low
    • testbed: all testbeds
    • example: 2n-clx, 3n-icx
    • ticket: CSIT-1782
    • note: A long standing issue without a final permanent fix.

(L) all testbeds: nat44det 4M and 16M scale 1 session not established

  • (L) Not all DET44 sessions have been established: 4128767 != 4128768
    • work-to-fix: hard
    • rca:
    • test: nat44det udp 4m and 16m (64k and 1m are ok)
    • frequency: low
    • testbed: 2n-zn2, 2n-skx, 2n-icx, 2n-clx
    • example: 2n-icx, 2n-clx
    • ticket: CSIT-1795
    • note:

Fixed issues

(H) all testbeds: all DPDK tests did not run because DPDK failed to install meson

  • (H) all testbeds: all DPDK tests did not run because required meson version was not installed
    • work-to-fix: easy
    • rca: upgraded meson from 0.49.2 to 0.64.1
    • test: all
    • frequency: always
    • testbed: all
    • example: 2n-clx
    • ticket:
    • note:

(L) 2n-dnv: nat44ed 1518B 64k sessions not establishing all sessions

  • (L) 2n-dnv: sporadic 1518B tput tests failing to establish required sessions
    • work-to-fix: hard
    • rca:
    • test: 1518B tput
    • frequency: low
    • testbeds: 2n-dnv
    • examples: 2n-dnv
    • ticket: CSIT-1850
    • note: 2n-dnv and 3n-dnv are turned off as they are going to be decomissioned soon.

(L) 2n-dnv, 3n-dnv: x557 auto-negotiating 1ge instead of 10ge

  • (L) T-Rex STL runtime error
    • work-to-fix: hard
    • rca: VPP code - X557 speed_capability set 1GE instead of 10GE
    • test: all tests
    • frequency: high
    • testbed: 2n-dnv and 3n-dnv
    • example: 2n-dnv, 3n-dnv
    • ticket: [/VPP-2010](https://jira.fd.io/browse/VPP-2010)
    • note: TODO VPP to fix speed_capability.
    • note: 2n-dnv and 3n-dnv are turned off as they are going to be decomissioned soon.

(M) 3n-snr: 25GE links randomly going down between snr/sut and icx/tg-trex

  • (M) 3n-snr: 25GE interface between SUT and TG/TRex goes down randomly
    • work-to-fix: hard
    • rca: QSFP convertor replaced.
    • test: all subsequent
    • frequency: high
    • testbed: 3n-snr
    • example: 3n-snr
    • ticket: CSIT-1871
    • note: Sometimes 'TwentyFiveGigabitEthernetec/0/0' goes down and all subsequent tests fail.

(H) 2n-clx, 2n-zn2: VPP RDMA tests no traffic forwarded

  • (H) 2n-clx, 2n-zn2: all RDMA tests failing with cli_inband clear runtime command