criu/scripts/ci
Adrian Reber 4d76d1acdc ci: shard alpine-test into parallel jobs to reduce CI time
The alpine-test CI job runs all ~483 zdtm tests sequentially three
times (normal, mntns-compat-mode, criu-config), followed by many
non-shardable tests. This dominates overall CI wait time. With only
2 jobs running in parallel (GCC and CLANG) the alpine tests take
around 30 minutes.

Use the existing --test-shard-index and --test-shard-count flags
already built into test/zdtm.py to split the zdtm test suite across
four parallel runners (shards 0-3). A fifth shard runs all
non-shardable tests (lazy pages, fault injection, test/others/*,
rootless, compel, plugins, etc.) independently and in parallel with
the zdtm shards. This increases parallelism from 2 to 10 jobs and
reduces the alpine test wall-clock time from ~30 to ~10 minutes.

Changes:
- run-ci-tests.sh: Build SHARD_OPTS from ZDTM_SHARD_INDEX/COUNT
  env vars and pass them to zdtm.py. Extract all non-shardable
  tests into a run_non_shardable_tests() function. Dispatch based
  on shard index: 0-3 run zdtm slices, 4 runs non-shardable
  tests, unset runs everything sequentially (preserving existing
  behavior). Validate that ZDTM_SHARD_INDEX is set when
  ZDTM_SHARD_COUNT is set.
- Makefile: Pass ZDTM_SHARD_INDEX and ZDTM_SHARD_COUNT into the
  container when set. Split long container run command across
  multiple lines for readability.
- ci.yml: Add shard: [0, 1, 2, 3, 4] to the alpine-test matrix,
  producing 10 jobs (2 compilers x 5 shards). Job labels now show
  descriptive shard names (e.g. "zdtm 1/4", "non-zdtm") instead
  of raw indices.

When sharding is not configured the script behaves identically to
before, so other CI jobs (aarch64, compat, gcov, etc.) are
unaffected.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Adrian Reber <areber@redhat.com>
2026-05-24 07:19:51 +01:00
..
riscv64-cross ci: add workflow for riscv64 2025-03-21 12:40:31 -07:00
asan.sh ci: stop testing ubuntu overlayfs 2023-10-22 13:29:25 -07:00
ci-after-success.sh CI: rename 'travis' to 'ci' 2020-11-08 14:04:12 -08:00
docker-test.sh ci: also exclude docker version 29 2025-12-14 17:28:58 +09:00
docker.env ci: Re-enable zdtm/static/binfmt_misc 2026-02-17 17:07:29 +00:00
java-test.sh ci: use package-manager dependency install scripts 2025-11-02 07:48:23 -08:00
lima.sh ci: Add vanilla next kernel test variant to Lima CI job 2026-04-22 08:22:50 +01:00
loongarch64-qemu-test.sh ci: use package-manager dependency install scripts 2025-11-02 07:48:23 -08:00
Makefile ci: shard alpine-test into parallel jobs to reduce CI time 2026-05-24 07:19:51 +01:00
podman-test.sh ci/podman: show mounts 2024-09-11 16:02:11 -07:00
prepare-for-fedora-rawhide.sh Use command -v instead of which 2025-11-05 15:41:34 -08:00
run-ci-tests.sh ci: shard alpine-test into parallel jobs to reduce CI time 2026-05-24 07:19:51 +01:00
vagrant.sh Remove travis-ci leftovers 2025-11-02 07:48:23 -08:00