diff --git a/tests/benchmark/src/java/com/android/microdroid/benchmark/MicrodroidBenchmarks.java b/tests/benchmark/src/java/com/android/microdroid/benchmark/MicrodroidBenchmarks.java
index c9ceaae..7bf3c4e 100644
--- a/tests/benchmark/src/java/com/android/microdroid/benchmark/MicrodroidBenchmarks.java
+++ b/tests/benchmark/src/java/com/android/microdroid/benchmark/MicrodroidBenchmarks.java
@@ -143,11 +143,7 @@
 
             // To grab boot events from log, set debug mode to FULL
             VirtualMachineConfig normalConfig =
-                    builder.debugLevel(DebugLevel.FULL)
-                            .memoryMib(256)
-                            .numCpus(2)
-                            .cpuAffinity("0=0:1=1")
-                            .build();
+                    builder.debugLevel(DebugLevel.FULL).memoryMib(256).build();
             mInner.forceCreateNewVirtualMachine("test_vm_boot_time", normalConfig);
 
             BootResult result = tryBootVm(TAG, "test_vm_boot_time");
@@ -194,8 +190,6 @@
         VirtualMachineConfig config =
                 mInner.newVmConfigBuilder("assets/vm_config_io.json")
                         .debugLevel(DebugLevel.FULL)
-                        .numCpus(2)
-                        .cpuAffinity("0=0:1=1")
                         .build();
         List<Double> transferRates = new ArrayList<>(IO_TEST_TRIAL_COUNT);
 
@@ -223,8 +217,6 @@
         VirtualMachineConfig config =
                 mInner.newVmConfigBuilder("assets/vm_config_io.json")
                         .debugLevel(DebugLevel.FULL)
-                        .numCpus(2)
-                        .cpuAffinity("0=0:1=1")
                         .build();
         List<Double> readRates = new ArrayList<>(IO_TEST_TRIAL_COUNT);