# Sidekiq jobs on catchall shard exceeding queueing duration targets (apdex SLO violation) (Severity 4) **Problem**: The catchall Sidekiq shard is overloaded, causing job queueing times to exceed targets and violating the SLO. **Impact**: Sidekiq jobs on the catchall shard are not meeting queueing duration targets, with the success rate dropping to 93.79%, which is below the service level objective. This may cause delays processing import-related jobs. **Causes**: Saturation of the Sidekiq catchall shard is primarily due to import workers, especially Projects::ImportExport::RelationExportWorker. This has led to an increase in timeout errors for stuck import jobs. **Response strategy**: We are preparing to migrate Projects::ImportExport::RelationExportWorker from the catchall shard to the import_shared_storage shard, following the queue migration runbook. The team is also checking for any related customer support tickets. _This ticket was created to track_ [_INC-7604_](https://app.incident.io/gitlab/incidents/7604)_, by_ [_incident.io_](https://app.incident.io) 🔥