Make the CPU eviction order configurable - #937
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Adds a prod-cached class for requests that only stream cached outputs, so they can be evicted without a wasm burn rate.
🔍 Vulnerabilities of
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| digest | sha256:2d3fe4d100d4f234ab406084704c7dcc86f4490d1e1a077ffb28d18ff5e31e66 |
| vulnerabilities |     |
| platform | linux/amd64 |
| size | 122 MB |
| packages | 380 |
📦 Base Image ubuntu:24.04
| also known as |
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| digest | sha256:a61567bd31828687156d735ea8eb01ba4e37636e225dd6a48ba94136a70d9d61 |
| vulnerabilities |   |
billettc
approved these changes
Sep 16, 2026
This was referenced Sep 16, 2026
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Adds
EvictorConfig.Order, the list of request classes eviction may cancel, least important first (ParseEvictionOrder("dev,prod-cached,prod-catchup")). A class left out is never cancelled. The default isdev,prod-cached,prod-catchup, so live production requests are no longer cancelled unlessprod-liveis added to the order.New class
prod-cached: a production request that has not processed a block on tier1 yet, meaning it only streams outputs cached by tier2. It runs no wasm on tier1, so:MinBurnCoresdoes not apply to it (MinAgestill does).Cooldown, measures what it freed.Within a class, requests are still cut highest burn first, now with oldest first on a tie (which is the only ordering among
prod-cachedrequests).dev-onlymode still restricts eviction todev, whatever the order says.The
--substreams-tier1-cpu-eviction-orderflag has to be added in firehose-core.