diff --git a/packages/boot/test/bootstrapTests/walletFactory.ts b/packages/boot/test/bootstrapTests/walletFactory.ts
index 0b8fea676bc..ce964047233 100644
--- a/packages/boot/test/bootstrapTests/walletFactory.ts
+++ b/packages/boot/test/bootstrapTests/walletFactory.ts
@@ -9,9 +9,11 @@ import { makeWalletFactoryDriver } from '../../tools/drivers.js';
 export const makeWalletFactoryContext = async (
   t,
   configSpecifier = '@agoric/vm-config/decentral-main-vaults-config.json',
+  opts = {},
 ) => {
   const swingsetTestKit = await makeSwingsetTestKit(t.log, undefined, {
     configSpecifier,
+    ...opts,
   });
 
   const { runUtils, storage } = swingsetTestKit;
diff --git a/packages/boot/tools/liquidation.ts b/packages/boot/tools/liquidation.ts
index 1b91c228120..2422b8a00fd 100644
--- a/packages/boot/tools/liquidation.ts
+++ b/packages/boot/tools/liquidation.ts
@@ -9,6 +9,7 @@ import {
 } from '@agoric/vats/tools/board-utils.js';
 import { Offers } from '@agoric/inter-protocol/src/clientSupport.js';
 import type { ExecutionContext } from 'ava';
+import { insistManagerType, makePolicyProvider } from './supports.js';
 import { type SwingsetTestKit, makeSwingsetTestKit } from './supports.js';
 import {
   type GovernanceDriver,
@@ -305,13 +306,28 @@ export const makeLiquidationTestKit = async ({
   };
 };
 
+// asserts x is type doesn't work when using arrow functions
+// https://github.com/microsoft/TypeScript/issues/34523
+function assertManagerType(specimen: string): asserts specimen is ManagerType {
+  insistManagerType(specimen);
+}
+
 export const makeLiquidationTestContext = async (
   t,
   io: { env?: Record<string, string | undefined> } = {},
 ) => {
   const { env = {} } = io;
+  const {
+    SLOGFILE: slogFile,
+    SWINGSET_WORKER_TYPE: defaultManagerType = 'local',
+  } = env;
+  assertManagerType(defaultManagerType);
+  const perfTool =
+    defaultManagerType === 'xsnap' ? makePolicyProvider() : undefined;
   const swingsetTestKit = await makeSwingsetTestKit(t.log, undefined, {
-    slogFile: env.SLOGFILE,
+    slogFile,
+    defaultManagerType,
+    perfTool,
   });
   console.time('DefaultTestContext');
 
@@ -369,6 +385,7 @@ export const makeLiquidationTestContext = async (
     refreshAgoricNamesRemotes,
     walletFactoryDriver,
     governanceDriver,
+    perfTool,
   };
 };
 
diff --git a/packages/boot/tools/supports.ts b/packages/boot/tools/supports.ts
index 7addf5619a5..7200c699f6d 100644
--- a/packages/boot/tools/supports.ts
+++ b/packages/boot/tools/supports.ts
@@ -32,6 +32,7 @@ import { Fail } from '@endo/errors';
 import {
   makeRunUtils,
   type RunUtils,
+  type RunPolicyMaker,
 } from '@agoric/swingset-vat/tools/run-utils.js';
 import {
   boardSlottingMarshaller,
@@ -47,6 +48,11 @@ import type { BridgeHandler, IBCMethod } from '@agoric/vats';
 import type { BootstrapRootObject } from '@agoric/vats/src/core/lib-boot.js';
 import type { EProxy } from '@endo/eventual-send';
 import type { FastUSDCCorePowers } from '@agoric/fast-usdc/src/fast-usdc.start.js';
+import {
+  defaultBeansPerVatCreation,
+  defaultBeansPerXsnapComputron,
+} from '@agoric/cosmic-swingset/src/sim-params.js';
+import { computronCounter } from '@agoric/cosmic-swingset/src/computron-counter.js';
 import { icaMocks, protoMsgMockMap, protoMsgMocks } from './ibc/mocks.js';
 
 const trace = makeTracer('BSTSupport', false);
@@ -77,6 +83,7 @@ type BootstrapEV = EProxy & {
 
 const makeBootstrapRunUtils = makeRunUtils as (
   controller: SwingsetController,
+  perfTool?: RunPolicyMaker,
 ) => Omit<RunUtils, 'EV'> & { EV: BootstrapEV };
 
 const keysToObject = <K extends PropertyKey, V>(
@@ -308,6 +315,7 @@ export const matchIter = (t: AvaT, iter, valueRef) => {
  * @param [options.profileVats]
  * @param [options.debugVats]
  * @param [options.defaultManagerType]
+ * @param [options.perfTool]
  */
 export const makeSwingsetTestKit = async (
   log: (..._: any[]) => void,
@@ -321,6 +329,7 @@ export const makeSwingsetTestKit = async (
     profileVats = [] as string[],
     debugVats = [] as string[],
     defaultManagerType = 'local' as ManagerType,
+    perfTool = undefined as RunPolicyMaker | undefined,
   } = {},
 ) => {
   console.time('makeBaseSwingsetTestKit');
@@ -538,7 +547,7 @@ export const makeSwingsetTestKit = async (
 
   console.timeLog('makeBaseSwingsetTestKit', 'buildSwingset');
 
-  const runUtils = makeBootstrapRunUtils(controller);
+  const runUtils = makeBootstrapRunUtils(controller, perfTool);
 
   const buildProposal = makeProposalExtractor({
     childProcess: childProcessAmbient,
@@ -660,3 +669,45 @@ export const makeSwingsetTestKit = async (
   };
 };
 export type SwingsetTestKit = Awaited<ReturnType<typeof makeSwingsetTestKit>>;
+
+export const makePolicyProvider = () => {
+  const c2b = defaultBeansPerXsnapComputron;
+  const mainParams = {
+    // see https://cosgov.org/agoric?msgType=parameterChangeProposal&network=main
+    blockComputeLimit: 65_000_000n * c2b,
+    vatCreation: defaultBeansPerVatCreation,
+    xsnapComputron: c2b,
+  };
+
+  /** @type {ReturnType<typeof computronCounter> | undefined} */
+  let policy;
+  let counting = false;
+
+  const meter = harden({
+    provideRunPolicy: () => {
+      if (counting && !policy) {
+        policy = computronCounter(mainParams);
+      }
+      return policy;
+    },
+    /** @param {boolean} x */
+    usePolicy: x => {
+      counting = x;
+      if (!counting) {
+        policy = undefined;
+      }
+    },
+    totalCount: () => (policy?.totalBeans() || 0n) / c2b,
+    resetPolicy: () => (policy = undefined),
+  });
+  return meter;
+};
+
+/**
+ *
+ * @param {string} mt
+ * @returns {asserts mt is ManagerType}
+ */
+export function insistManagerType(mt) {
+  assert(['local', 'node-subprocess', 'xsnap', 'xs-worker'].includes(mt));
+}