roachtest: add tpccbench configurations that have caused instability

See cockroachdb#31409.

Release note: None

pkg/cmd/roachtest/tpcc.go

@@ -339,7 +339,11 @@ func registerTPCCBenchSpec(r *registry, b tpccBenchSpec) {
 // function is idempotent and first checks whether a compatible dataset exists,
 // performing an expensive dataset restore only if it doesn't.
 func loadTPCCBench(
-	ctx context.Context, t *test, c *cluster, b tpccBenchSpec, roachNodes, loadNode nodeListOption,
+	ctx context.Context,
+	t *test,
+	c *cluster,
+	b tpccBenchSpec,
+	roachNodes, loadNode nodeListOption,
 ) error {
 	db := c.Conn(ctx, 1)
 	defer db.Close()
@@ -736,6 +740,32 @@ func registerTPCCBench(r *registry) {
 			LoadWarehouses: 50000,
 			EstimatedMax:   40000,
 		},
+
+		// See https://github.com/cockroachdb/cockroach/issues/31409 for the next three specs.
+		{
+			Nodes: 6,
+			CPUs:  16,
+
+			LoadWarehouses: 5000,
+			EstimatedMax:   3000,
+			LoadConfig:     singlePartitionedLoadgen,
+		},
+		{
+			Nodes: 12,
+			CPUs:  16,
+
+			LoadWarehouses: 10000,
+			EstimatedMax:   6000,
+			LoadConfig:     singlePartitionedLoadgen,
+		},
+		{
+			Nodes: 24,
+			CPUs:  16,
+
+			LoadWarehouses: 20000,
+			EstimatedMax:   12000,
+			LoadConfig:     singlePartitionedLoadgen,
+		},
 	}
 
 	for _, b := range specs {