Reduce max thread count in nginx and wordpress benchmarks.

Now it is still a high number, but one that has a more realistic chance
to run effectively on small machines.

PiperOrigin-RevId: 770887549

Author: EtiennePerot

test/kubernetes/benchmarks/nginx.go

@@ -49,7 +49,7 @@ var (
 	// and will serve files out of `nginxServingDir`.
 	nginxCommand      = []string{"nginx", "-c", "/etc/nginx/nginx.conf"}
 	nginxDocKibibytes = []int{1, 10240}
-	threads           = []int{1, 8, 1000}
+	threads           = []int{1, 8, 256}
 	targetQPS         = []int{1, 64, httpbench.InfiniteQPS}
 	wantPercentiles   = []int{50, 95, 99}
 )

test/kubernetes/benchmarks/wordpress.go

@@ -52,7 +52,7 @@ const (
 )
 
 var (
-	threads         = []int{1, 8, 1000}
+	threads         = []int{1, 8, 256}
 	targetQPS       = []int{1, 64, httpbench.InfiniteQPS}
 	wantPercentiles = []int{50, 95, 99}
 )