memcached: increase the memory size

Signed-off-by: Reto Achermann <achreto@gmail.com>

Author: achreto

kernel/tests/s11_rackscale_benchmarks.rs

@@ -648,7 +648,8 @@ fn rackscale_memcached_benchmark(transport: RackscaleTransport) {
             8192
         } else {
             // Memory must also be divisible by number of nodes, which could be 1, 2, 3, or 4
-            2048 * (((((num_cores + 1) / 2) + 3 - 1) / 3) * 3)
+            // memory = result of this function / num_clients  - shmem_size
+            (2048 + 2 * MEMCACHED_MEM_SIZE_MB) * (((((num_cores + 1) / 2) + 3 - 1) / 3) * 3)
         }
     }
 
@@ -1320,7 +1321,7 @@ fn s11_rackscale_memcached_benchmark_sharded_nros() {
             8192
         } else {
             // Memory must also be divisible by number of nodes, which could be 1, 2, 3, or 4
-            2048 * (((((num_cores + 1) / 2) + 3 - 1) / 3) * 3)
+            (2048 + 2 * MEMCACHED_MEM_SIZE_MB) * (((((num_cores + 1) / 2) + 3 - 1) / 3) * 3)
         }
     }