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authorVincent Ambo <mail@tazj.in>2022-12-03T13·36+0300
committerclbot <clbot@tvl.fyi>2022-12-03T14·11+0000
commitabaa90c3ab9d738901804916441ac07f29a8a22f (patch)
tree7b1b3207709afd46099f9362a4826728b4165cc9 /ops
parentf4e17caae88a1180444d8120ba35565e9853199d (diff)
fix(ops/pipelines): limit concurrency of :llama: r/5380
When pushing a large chain of CLs, builds can fail with OOM issues as
many Nix evaluations of the depot are happening simultaneously.

To work around this, we limit the concurrency of simultaneous Nix
evaluations (i.e. the `:llama` step). This can slow down the start of
builds in a large chain of small changes, but that is a better
tradeoff than failing the builds entirely and making people click
buttons.

Change-Id: If351aaad22d52e2bcf871377f22ab1df594c518d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7501
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Diffstat (limited to 'ops')
-rw-r--r--ops/pipelines/static-pipeline.yaml2
1 files changed, 2 insertions, 0 deletions
diff --git a/ops/pipelines/static-pipeline.yaml b/ops/pipelines/static-pipeline.yaml
index 2dd7781febf1..8fcf240f7433 100644
--- a/ops/pipelines/static-pipeline.yaml
+++ b/ops/pipelines/static-pipeline.yaml
@@ -34,6 +34,8 @@ steps:
   # Generate & upload dynamic build steps
   - label: ":llama:"
     key: "pipeline-gen"
+    concurrency_group: 'depot-nix-eval'
+    concurrency: 5 # much more than this and whitby will OOM
     command: |
       set -ue