[igt-dev] [PATCH i-g-t] intel-ci: add a pre-merge blacklist to reduce the testing queue
Petri Latvala
petri.latvala at intel.com
Fri Feb 21 10:20:33 UTC 2020
On Thu, Feb 20, 2020 at 05:32:09PM +0200, Martin Peres wrote:
> When arriving at the office on Monday morning, the reported queue
> size was ~100 hours. This defeats the point of pre-merge testing and
> vastly exceeds our target of ~6 hours.
>
> We have a lot of work needed to reduce testing time, but this patches
> reduces the reported run time by 15-30% depending on the platforms:
>
> - shard-skl: 23.9 -> 18.2 minutes (18.5%)
> - shard-kbl: 21.2 -> 16.2 minutes (20%)
> - shard-apl: 25.9 -> 18.5 minutes (24.3%)
> - shard-glk: 24.7 -> 17.6 minutes (24.8%)
> - shard-icl: 25.1 -> 16.7 minutes (28.7%)
> - shard-tgl: 28.2 -> 19.6 minutes (26.4%)
>
> The reason why the reported runtime is so low compared to the
> actual time is due to:
>
> - Unaccounted time spent outside of the IGT subtests (exec(), fixtures)
> - Unaccounted time spent in suspend (monotonic clock, 20s / suspend)
> - Boot time / extra reboots between shards to workaround kernel failures
> - Intel GFX CI shard scheduling overhead
> - More?
>
> Tomi and Petri are working on reducing these overheads by detecting the
> bad conditions and rebooting the machine only at this point rather than
> between every single shard, and increasing the size of the shard test
> lists to reduce the per-shard CI overhead.
>
> Because of this, the actual savings are way smaller in percentage
> but still compound over the tens of executions we do per week:
>
> - shard-skl: ~58 -> ~52 minutes
> - shard-kbl: ~50 -> ~45 minutes
> - shard-apl: ~53 -> ~46 minutes
> - shard-glk: ~38 -> ~31 minutes
> - shard-icl: ~47 -> ~39 minutes
> - shard-tgl: ~60 -> ~51 minutes
>
> More work needed, but we'll get there :)
>
> Signed-off-by: Martin Peres <martin.peres at linux.intel.com>
> ---
> tests/intel-ci/README | 7 +
> tests/intel-ci/blacklist-pre-merge.txt | 221 +++++++++++++++++++++++++
With a drive-by addition of a forgotten blacklist.txt, squash this in:
diff --git a/tests/intel-ci/meson.build b/tests/intel-ci/meson.build
index b3abb848..62811e92 100644
--- a/tests/intel-ci/meson.build
+++ b/tests/intel-ci/meson.build
@@ -3,6 +3,8 @@ intelci_files = [
'fast-feedback.testlist',
'meta.testlist',
'README',
+ 'blacklist.txt',
+ 'blacklist-pre-merge.txt',
]
install_data(sources : intelci_files, install_dir : datadir)
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