diff --git a/sample-configs/config-xxlarge-hnsw.json b/sample-configs/config-xxlarge-hnsw.json
new file mode 100644
index 000000000..d19ff3059
--- /dev/null
+++ b/sample-configs/config-xxlarge-hnsw.json
@@ -0,0 +1,149 @@
+{
+  "database": {
+    "host": "localhost",
+    "username": "postgres",
+    "password": "postgres",
+    "db_name": "ann",
+    "instance_type": "m7i.2xlarge",
+    "provider": "aws-vm",
+    "enable_seqscan": "on"
+  },
+  "cases": [
+    {
+      "db-label": "xl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 64,
+      "m": 16,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30,
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 64,
+      "m": 8,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 64,
+      "m": 32,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 32,
+      "m": 8,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 32,
+      "m": 16,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 128,
+      "m": 8,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 128,
+      "m": 16,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    },
+    {
+      "db-label": "xxl-vm-instance",  
+      "drop_old": true,
+      "load": true,
+      "search-serial": true,
+      "search-concurrent": true,
+      "case-type": "Performance1536D5M",
+      "maintenance-work-mem": "32GB",
+      "max-parallel-workers": 15,
+      "ef-search": [10, 20, 40, 80, 120, 200, 400],
+      "ef-construction": 128,
+      "m": 32,
+      "num-concurrency": "1,10,20,30,40,50,60,70,80,90,100",
+      "concurrency-duration": 30, 
+      "k": 10,
+      "run_count": 1
+    }
+  ]
+}