Exemplo n.º 1
0
        public void PerformanceCounterUtilitySanityTest()
        {
            var win32Instances = PerformanceCounterUtility.GetWin32ProcessInstances();
            var clrInstances   = PerformanceCounterUtility.GetClrProcessInstances();

            var win32Instance = PerformanceCounterUtility.GetInstanceForWin32Process(win32Instances);
            var clrInstance   = PerformanceCounterUtility.GetInstanceForClrProcess(clrInstances);

            PerformanceCounterUtility.GetInstanceForCurrentW3SvcWorker();
        }
Exemplo n.º 2
0
        public void PerformanceCounterUtilityPlaceholderExpansionTest()
        {
            PerformanceCounterUtility.InvalidatePlaceholderCache();

            var win32Instances = PerformanceCounterUtility.GetWin32ProcessInstances();
            var clrInstances   = PerformanceCounterUtility.GetClrProcessInstances();

            bool usesInstanceNamePlaceholder;
            var  pc = PerformanceCounterUtility.ParsePerformanceCounter(@"\Processor(??APP_WIN32_PROC??)\% Processor Time", win32Instances, clrInstances, out usesInstanceNamePlaceholder);

            Assert.IsFalse(pc.InstanceName.Contains("?"));

            pc = PerformanceCounterUtility.ParsePerformanceCounter(@"\Processor(??APP_CLR_PROC??)\% Processor Time", win32Instances, clrInstances, out usesInstanceNamePlaceholder);
            Assert.IsFalse(pc.InstanceName.Contains("?"));

            pc = PerformanceCounterUtility.ParsePerformanceCounter(@"\Processor(??APP_W3SVC_PROC??)\% Processor Time", win32Instances, clrInstances, out usesInstanceNamePlaceholder);
            Assert.IsFalse(pc.InstanceName.Contains("?"));

            pc = PerformanceCounterUtility.ParsePerformanceCounter(@"\ASP.NET Applications(??APP_W3SVC_PROC??)\Request Execution Time", win32Instances, clrInstances, out usesInstanceNamePlaceholder);
            Assert.IsFalse(pc.InstanceName.Contains("?"));

            pc = PerformanceCounterUtility.ParsePerformanceCounter(@"\Processor(??NON_EXISTENT??)\% Processor Time", win32Instances, clrInstances, out usesInstanceNamePlaceholder);
            Assert.AreEqual("??NON_EXISTENT??", pc.InstanceName);

            // validate placeholder cache state
            var cache =
                new PrivateType(typeof(PerformanceCounterUtility)).GetStaticField(
                    "PlaceholderCache",
                    BindingFlags.NonPublic) as ConcurrentDictionary <string, string>;

            Assert.AreEqual(3, cache.Count);
            Assert.IsTrue(cache.ContainsKey("APP_WIN32_PROC"));
            Assert.IsTrue(cache.ContainsKey("APP_CLR_PROC"));
            Assert.IsTrue(cache.ContainsKey("APP_W3SVC_PROC"));

            PerformanceCounterUtility.InvalidatePlaceholderCache();

            Assert.IsFalse(cache.Any());
        }
        /// <summary>
        /// Binds processes to performance counters instance names and adds performance counters to the collection.
        /// </summary>
        /// <remarks>This operation is expensive, but must be done periodically to account for IIS changing instance names
        /// of the counters it reports Web Sites on as worker processes start and terminate.</remarks>
        private void EnsurePerformanceCountersRegistered()
        {
            if (DateTime.Now - this.lastRefreshTimestamp < this.registrationPeriod)
            {
                // re-registration period hasn't elapsed yet, do nothing
                return;
            }

            // get all instances that currently exist in the system
            var win32Instances = PerformanceCounterUtility.GetWin32ProcessInstances();
            var clrInstances   = PerformanceCounterUtility.GetClrProcessInstances();

            PerformanceCounterUtility.InvalidatePlaceholderCache();

            if (this.lastRefreshTimestamp == DateTime.MinValue)
            {
                this.ProcessCustomCounters();

                string error;
                var    errors = new List <string>();

                // this is the initial registration, register everything
                this.defaultCounters.ForEach(pcName => this.RegisterCounter(pcName, string.Empty, win32Instances, clrInstances, false, out error));
                foreach (PerformanceCounterCollectionRequest req in this.Counters)
                {
                    this.RegisterCounter(
                        req.PerformanceCounter,
                        req.ReportAs,
                        win32Instances,
                        clrInstances,
                        true,
                        out error);

                    if (!string.IsNullOrWhiteSpace(error))
                    {
                        errors.Add(
                            string.Format(
                                CultureInfo.InvariantCulture,
                                Resources.PerformanceCounterCheckConfigurationEntry,
                                req.PerformanceCounter,
                                error));
                    }
                }

                if (errors.Any())
                {
                    // send out the unified error message
                    PerformanceCollectorEventSource.Log.CounterCheckConfigurationEvent(
                        errors.Count.ToString(CultureInfo.InvariantCulture),
                        this.Counters.Count.ToString(CultureInfo.InvariantCulture),
                        string.Join(Environment.NewLine, errors));
                }
            }
            else
            {
                // this is a periodic refresh
                this.RefreshCounters(win32Instances, clrInstances);
            }

            // as per MSDN, we need to wait at least 1s before proceeding with counter collection
            Thread.Sleep(TimeSpan.FromSeconds(1));

            this.lastRefreshTimestamp = DateTime.Now;
        }
 /// <summary>
 /// Loads instances that are used in performance counter computation.
 /// </summary>
 private void LoadDependentInstances()
 {
     this.win32Instances = PerformanceCounterUtility.GetWin32ProcessInstances();
     this.clrInstances   = PerformanceCounterUtility.GetClrProcessInstances();
 }