7458f1be01
✅ Validation Results: - PPO training: 24.2s (1 epoch, 950 samples, dim=225) - Feature extraction: 105μs/bar (9.5x faster than target) - Model checkpoint: 293KB (147KB actor + 146KB critic) - GPU memory: 145MB used (96.4% headroom) - Zero dimension mismatches 📊 Success Criteria (5/5): ✅ Feature dimension = 225 (Wave C 201 + Wave D 24) ✅ Model state_dim = 225 ✅ Training completed without errors ✅ Checkpoint saved successfully ✅ No dimension mismatch errors 📁 Training Data Ready: - ES.FUT: 2.9MB, 180 days - NQ.FUT: 4.4MB, 180 days - 6E.FUT: 2.8MB, 180 days - ZN.FUT: 65KB, 90 days (clean) 🚀 Next: Full production model retraining (4 models, ~10min GPU time) 🤖 Generated with Claude Code (https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
92 lines
1.8 KiB
Markdown
92 lines
1.8 KiB
Markdown
# Database Issues Troubleshooting Guide
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**Last Updated**: 2025-10-22
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---
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## Connection Issues
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### Symptom: `could not connect to server`
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**Diagnosis**:
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```bash
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# Check PostgreSQL is running
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kubectl get pods -n foxhunt -l app=postgresql
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# Check service endpoint
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kubectl get endpoints -n foxhunt foxhunt-postgresql
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# Test connectivity
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kubectl run -it --rm psql-test --image=postgres:15 --restart=Never -- \
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psql -h foxhunt-postgresql.foxhunt.svc.cluster.local -U foxhunt -d foxhunt
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```
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**Resolution**:
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```bash
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# Restart PostgreSQL
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kubectl delete pod foxhunt-postgresql-0 -n foxhunt
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# Verify secrets
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kubectl get secret foxhunt-secrets -n foxhunt -o yaml
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```
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---
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## Slow Queries
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### Symptom: Queries taking >1s
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**Diagnosis**:
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```sql
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-- Find slow queries
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SELECT query, mean_exec_time, calls
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FROM pg_stat_statements
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ORDER BY mean_exec_time DESC
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LIMIT 10;
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-- Analyze query plan
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EXPLAIN ANALYZE SELECT * FROM orders WHERE symbol='ES.FUT' ORDER BY created_at DESC LIMIT 100;
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```
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**Resolution**:
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```sql
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-- Create index
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CREATE INDEX CONCURRENTLY idx_orders_symbol_created_at ON orders(symbol, created_at DESC);
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-- Update statistics
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ANALYZE orders;
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-- Increase work_mem for complex queries
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SET work_mem = '256MB';
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```
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---
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## Deadlocks
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### Symptom: `deadlock detected`
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**Diagnosis**:
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```sql
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-- Check deadlock log
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SELECT * FROM pg_stat_activity WHERE wait_event_type = 'Lock';
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-- Enable deadlock logging
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ALTER SYSTEM SET deadlock_timeout = '1s';
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ALTER SYSTEM SET log_lock_waits = on;
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SELECT pg_reload_conf();
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```
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**Resolution**:
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```sql
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-- Access tables in consistent order
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BEGIN;
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SELECT * FROM orders WHERE id = 1 FOR UPDATE; -- Always lock orders first
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SELECT * FROM positions WHERE order_id = 1 FOR UPDATE; -- Then positions
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COMMIT;
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```
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---
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**End of Database Issues Troubleshooting Guide**
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