binderRpcTest: cut down a few tests (part I)

We're hitting timeouts on this test again. Taking
a few cheap wins.

Bug: 271860373
Test: binderRpcTest
Change-Id: I5e0dd1d383cfa1bcede197ee63fe47bfbd279cdb
diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 6e34d25..7e41a15 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -435,8 +435,7 @@
     for (auto& t : ts) t.join();
 }
 
-static void testThreadPoolOverSaturated(sp<IBinderRpcTest> iface, size_t numCalls,
-                                        size_t sleepMs = 500) {
+static void testThreadPoolOverSaturated(sp<IBinderRpcTest> iface, size_t numCalls, size_t sleepMs) {
     size_t epochMsBefore = epochMillis();
 
     std::vector<std::thread> ts;
@@ -462,7 +461,7 @@
     constexpr size_t kNumThreads = 10;
     constexpr size_t kNumCalls = kNumThreads + 3;
     auto proc = createRpcTestSocketServerProcess({.numThreads = kNumThreads});
-    testThreadPoolOverSaturated(proc.rootIface, kNumCalls);
+    testThreadPoolOverSaturated(proc.rootIface, kNumCalls, 250 /*ms*/);
 }
 
 TEST_P(BinderRpc, ThreadPoolLimitOutgoing) {
@@ -475,7 +474,7 @@
     constexpr size_t kNumCalls = kNumOutgoingConnections + 3;
     auto proc = createRpcTestSocketServerProcess(
             {.numThreads = kNumThreads, .numOutgoingConnections = kNumOutgoingConnections});
-    testThreadPoolOverSaturated(proc.rootIface, kNumCalls);
+    testThreadPoolOverSaturated(proc.rootIface, kNumCalls, 250 /*ms*/);
 }
 
 TEST_P(BinderRpc, ThreadingStressTest) {
@@ -483,9 +482,9 @@
         GTEST_SKIP() << "This test requires multiple threads";
     }
 
-    constexpr size_t kNumClientThreads = 10;
-    constexpr size_t kNumServerThreads = 10;
-    constexpr size_t kNumCalls = 100;
+    constexpr size_t kNumClientThreads = 5;
+    constexpr size_t kNumServerThreads = 5;
+    constexpr size_t kNumCalls = 50;
 
     auto proc = createRpcTestSocketServerProcess({.numThreads = kNumServerThreads});