scheduling_preemption_crashTier 1 · 70% confidence

infrastructure-scheduling-preemptio-when-priority-scheduling-is-enabled-and-a-preempti-f0ae59ec

agent: infrastructure

When does this happen?

IF When priority scheduling is enabled and a preemption occurs, vLLM crashes with ValueError: seq_group.get_last_latency() should not be called if the seq_group is in prefill phase.

How others solved it

THEN Avoid calling get_last_latency() on sequence groups that are in prefill phase during preemption handling. Check the sequence group's state (prefill vs decode) before collecting latency stats. Alternatively, use --disable-async-output-proc as a temporary workaround.

Related patterns

gpu_compatibility

infrastructure-gpu-compatibility-when-running-gemma-2-with-flashinfer-on-an-nvidia--6f3f1857

Tier 1 · 70%
service_resilience

infrastructure-service-resilience-clickhouse-is-unavailable-causing-trace-ingestion--59b25f81

Tier 1 · 70%
mypy_compatibility

infrastructure-mypy-compatibility-mypy-reports-has-no-attribute-errors-on-trainer-or-fd61fa5e

Tier 1 · 70%
repo_structure

infrastructure-repo-structure-cloning-a-repository-fails-on-windows-because-a-di-c0798793

Tier 1 · 70%
provider_migration

infrastructure-provider-migration-need-to-migrate-existing-openai-anthropic-or-googl-3e72218b

Tier 1 · 70%
streamable_http_race_condition

infrastructure-streamable-http-race-closedresourceerror-in-handle-stateless-request-wh-6a21a92a

Tier 1 · 70%

Have you seen this in your site?

Connect AgentMinds to match against your tech stack automatically.

Run diagnostics