SERVER-68304: Remove TestTimerElapsedAfterMultipleDetachAttach

1 files changed, 0 insertions, 49 deletions

diff --git a/src/mongo/db/operation_cpu_timer_test.cpp b/src/mongo/db/operation_cpu_timer_test.cpp
index 04c0e0b97df..78561479c51 100644
--- a/src/mongo/db/operation_cpu_timer_test.cpp
+++ b/src/mongo/db/operation_cpu_timer_test.cpp
@@ -127,55 +127,6 @@ TEST_F(OperationCPUTimerTest, TestTimerDetachAndAttachHandlers) {
     observer.join();
 }
 
-TEST_F(OperationCPUTimerTest, TestTimerElapsedAfterMultipleDetachAttach) {
-
-    auto checkTimerAccumulatesElapsedTime = [&]() {
-        auto timer = getTimer();
-        timer->start();
-        busyWait(Microseconds(100));  // Elapse 100 us.
-        timer->onThreadDetach();
-
-        busyWait(Microseconds(100));
-
-        timer->onThreadAttach();
-        busyWait(Microseconds(10));  // Elapse 10 us.
-        timer->onThreadDetach();
-
-        busyWait(Microseconds(100));
-
-        timer->onThreadAttach();
-        busyWait(Microseconds(10));  // Elapse 10 us.
-        timer->stop();
-
-        return timer->getElapsed();
-    };
-
-    // PosixTimer relies on clock_gettime, which might give bad results if the thread is migrated to
-    // another CPU when using a GLIBC < 2.4. Additionally, even on systems with GLIBC >= 2.4
-    // reported time can occasionally be incorrect due to precision issues. E.g. 119999000 ns < 120
-    // ms.
-
-    // We try to work around this issue by executing the test multiple times and establishing a
-    // threshold failure rate. This does not guarantee that the test will not fail, but should
-    // reduce the amount of noise.
-
-    const auto kRepeats = 1000;
-    const auto kMaxFailureRate = 0.1;
-    const auto kMaxFailures = kMaxFailureRate * kRepeats;
-    auto nFailures = 0;
-    auto nRetries = 0;
-    while (nRetries++ < kRepeats) {
-        auto testResult = checkTimerAccumulatesElapsedTime();
-        // Total elapsed while attached should be GTE 120 us.
-        if (testResult < Microseconds(120)) {
-            ++nFailures;
-        }
-        // Verifies we do not compute detached time.
-        ASSERT_LT(testResult, Microseconds(200));
-    }
-    ASSERT_LTE(nFailures, kMaxFailures);
-}
-
 DEATH_TEST_F(OperationCPUTimerTest,
              AccessTimerForDetachedOperation,
              "Operation not attached to the current thread") {