Increase reliability of per patch perf job

CSIT-1485

- Measurement results are inconsistent, creating false positives.
- To avoid false positives, sensitivity has to be lowered.
+ Measurements are no more interleaved.
+ Measurement result are no longer filtered.
+ The job now runs faster.
- Ip6base regressions smaller than 4% are tolerated.
+ Ip6base false positives can happen, but less than 10% of the time.
- Part of job parameters is set on ci-management level.
+ Voter script output is improved.

Change-Id: I0ec7d5df8b397daf7ff0277a1137ee9f36d8d866
Signed-off-by: Vratko Polak <vrpolak@cisco.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/resources/libraries/bash/entry/per_patch_perf.sh b/resources/libraries/bash/entry/per_patch_perf.sh
index d3aabfae17..82dadc2ed6 100644
--- a/resources/libraries/bash/entry/per_patch_perf.sh
+++ b/resources/libraries/bash/entry/per_patch_perf.sh
@@ -58,17 +58,21 @@ select_tags || die
 compose_pybot_arguments || die
 generate_tests || die
 archive_tests || die
-iterations=8
+# Support for interleaved measurements is kept for future.
+iterations=1 # 8
 for ((iter=0; iter<iterations; iter++)); do
-    # TODO: Use less heavy way to avoid apt remove falilures.
-    # Also, reserve_testbed has already called cleanup once.
-    cleanup_topo
+    if ((iter)); then
+        # Reserve testbed has already cleaned it once,
+        # but we need to clean it explicitly on subsequent iterations.
+        cleanup_topo
+    fi
     select_build "build_parent" || die
     check_download_dir || die
     run_pybot || die
     copy_archives || die
     archive_parse_test_results "csit_parent/${iter}" || die
     die_on_pybot_error || die
+    # TODO: Use less heavy way to avoid apt remove failures.
     cleanup_topo
     select_build "build_current" || die
     check_download_dir || die