Avere un servizio Windows che, tra le altre cose, controlla i pool di applicazioni IIS. Se un pool ha configurato applicazioni e non è in esecuzione, viene avviato (il pool). Questo ha funzionato bene per qualche tempo. Recentemente è stato scoperto che il servizio stava perdendo memoria. Guardando un dump della memoria il colpevole è Microsoft.Web.Administration utilizzato per controllare i pool di applicazioni. L'unico oggetto che è usa e getta è ServerManager e lo ho in un blocco using. Ho trovato altre segnalazioni di questa fuga ma nessuna soluzione ancora. (vedere commenti degli utenti in http://msdn.microsoft.com/en-us/library/microsoft.web.administration.servermanager(v=vs.90).aspx#CommunityContent)Perdita di memoria Microsoft.Web.Administration
Quando si esegue il dump di tutte le radici per Microsoft.Web.Administration.ServerManager (481 in questo dump) vedo solo le radici una di esse. Supponiamo che questa sia l'iterazione corrente.
Non sono sicuro perché questi oggetti Web.Administration non possano essere raccolti, anche se non sembrano essere rootati (?). Qualche idea su come collegare questa perdita?
Ho spostato il codice su un'applicazione console e riprodotto la perdita lì.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using Microsoft.Web.Administration;
namespace Web.Administration.LeakExample
{
public static class ServerManagerExtensions
{
/// <summary>
/// Returns the application counts for application pools under the specified ServerManager.
/// Application pools without applications will not be returned.
/// </summary>
/// <param name="manager"></param>
/// <returns></returns>
public static Dictionary<string, uint> GetPoolApplicationCounts(this ServerManager manager)
{
if (manager == null)
{
throw new ArgumentNullException();
}
var appCounts = new Dictionary<string, uint>(manager.ApplicationPools.Count);
foreach (var app in manager.Sites.SelectMany(site => site.Applications))
{
if (!appCounts.ContainsKey(app.ApplicationPoolName))
{
appCounts.Add(app.ApplicationPoolName, 1);
}
else
{
appCounts[app.ApplicationPoolName]++;
}
}
return appCounts;
}
}
class Program
{
static void Main(string[] args)
{
while (!Console.KeyAvailable)
{
Console.WriteLine("Checking App Pools...");
using (var manager = new ServerManager())
{
var appCounts = manager.GetPoolApplicationCounts();
var appPools = manager.ApplicationPools.Where(pool => appCounts.ContainsKey(pool.Name));
foreach (
var pool in
appPools.Where(
pool => (pool.State != ObjectState.Started) && (pool.State != ObjectState.Starting)))
{
var state = pool.Start();
if ((state == ObjectState.Started) || (state == ObjectState.Starting))
{
Console.WriteLine("Started app pool \"{0}\"", pool.Name);
}
else
{
Console.WriteLine("Failed to start app pool \"{0}\". state:{1}", pool.Name, state);
}
}
}
Console.WriteLine("Sleeping...");
Thread.Sleep(1000);
}
}
}
}
WinDbg sessione:
> !dumpheap -stat
606b778c 479 5748 System.Runtime.Remoting.Activation.ConstructionLevelActivator
00472088 480 5760 System.Collections.Generic.Dictionary`2+ValueCollection[[System.String, mscorlib],[Microsoft.Web.Administration.Interop.IAppHostElement, Microsoft.Web.Administration]]
00471d5c 480 5760 System.Collections.Generic.SortedList`2+ValueList[[System.String, mscorlib],[Microsoft.Web.Administration.Configuration, Microsoft.Web.Administration]]
00194568 481 5772 Web.Administration.LeakExample.Program+<>c__DisplayClass3
00198438 480 7680 Microsoft.Web.Administration.Interop.AppHostWritableAdminManager
0047199c 481 7696 System.Linq.Enumerable+<>c__DisplayClassf`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
606cc200 958 11496 System.Char
00471e2c 479 11496 System.Collections.Generic.SortedList`2+SortedListValueEnumerator[[System.String, mscorlib],[Microsoft.Web.Administration.Configuration, Microsoft.Web.Administration]]
0047090c 479 11496 System.Collections.Generic.List`1+Enumerator[[Microsoft.Web.Administration.Site, Microsoft.Web.Administration]]
004706f0 958 11496 Microsoft.Web.Administration.ConfigurationElementCollectionBase`1+<>c__DisplayClass4[[Microsoft.Web.Administration.Site, Microsoft.Web.Administration]]
00471aec 480 11520 System.Collections.Generic.List`1+Enumerator[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
0047041c 480 11520 System.Collections.Generic.List`1[[Microsoft.Web.Administration.Site, Microsoft.Web.Administration]]
00196d58 480 11520 System.Collections.Generic.List`1[[Microsoft.Web.Administration.Configuration, Microsoft.Web.Administration]]
004715cc 481 11544 System.Collections.Generic.List`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
0047103c 1437 17244 Microsoft.Web.Administration.ConfigurationElementCollectionBase`1+<>c__DisplayClass4[[Microsoft.Web.Administration.Application, Microsoft.Web.Administration]]
606ccfc8 1438 17256 System.Int32
00196a58 480 19200 System.Collections.Generic.SortedList`2[[System.String, mscorlib],[Microsoft.Web.Administration.Configuration, Microsoft.Web.Administration]]
0019660c 480 21120 Microsoft.Web.Administration.ConfigurationManager
00471130 958 22992 System.Collections.Generic.List`1+Enumerator[[Microsoft.Web.Administration.Application, Microsoft.Web.Administration]]
00470d68 960 23040 System.Collections.Generic.List`1[[Microsoft.Web.Administration.Application, Microsoft.Web.Administration]]
00198558 480 23040 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[Microsoft.Web.Administration.Interop.IAppHostElement, Microsoft.Web.Administration]]
00196a08 481 23088 Microsoft.Web.Administration.Configuration
00183170 481 23088 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[System.UInt32, mscorlib]]
606b7574 479 24908 System.Runtime.Remoting.Messaging.ConstructorCallMessage
00199e7c 479 24908 System.Linq.Enumerable+<SelectManyIterator>d__14`2[[Microsoft.Web.Administration.Site, Microsoft.Web.Administration],[Microsoft.Web.Administration.Application, Microsoft.Web.Administration]]
00199384 480 28800 System.Collections.Generic.Dictionary`2+Entry[[System.String, mscorlib],[Microsoft.Web.Administration.Interop.IAppHostElement, Microsoft.Web.Administration]][]
00470874 958 30656 System.Predicate`1[[Microsoft.Web.Administration.Site, Microsoft.Web.Administration]]
004718a8 962 30784 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
001944d8 481 30784 Microsoft.Web.Administration.ServerManager
00195178 963 30816 System.Func`2[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration],[System.Boolean, mscorlib]]
606ccf90 968 31268 System.Int32[]
00197a50 480 32640 Microsoft.Web.Administration.SiteCollection
00194da0 481 32708 Microsoft.Web.Administration.ApplicationPoolCollection
004719f8 2874 34488 Microsoft.Web.Administration.ConfigurationElementCollectionBase`1+<>c__DisplayClass4[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
0019810c 960 42240 Microsoft.Web.Administration.ConfigurationSection
00471098 1437 45984 System.Predicate`1[[Microsoft.Web.Administration.Application, Microsoft.Web.Administration]]
606cc1c8 961 46638 System.Char[]
001838d0 481 59644 System.Collections.Generic.Dictionary`2+Entry[[System.String, mscorlib],[System.UInt32, mscorlib]][]
606bedd0 5269 63228 System.UInt32
00470a7c 960 69120 Microsoft.Web.Administration.ApplicationCollection
00197c60 960 76800 Microsoft.Web.Administration.Site
00197ea8 1440 86400 Microsoft.Web.Administration.Application
00471a54 2874 91968 System.Predicate`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
6067c684 4832 141272 System.Object[]
00195024 2886 196248 Microsoft.Web.Administration.ApplicationPool
606c7b20 16323 261168 System.__ComObject
>.foreach (obj {!dumpheap -mt 001944d8 -short}){!gcroot -all obj}
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+70: 002ef148
-> 02773270 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+68: 002ef150
-> 02773270 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+78: 002ef140
-> 027732c0 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+6c: 002ef14c
-> 02773270 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+74: 002ef144
-> 027732c0 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+60: 002ef158
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+3c: 002ef17c
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+4c: 002ef16c
-> 027732c0 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+40: 002ef178
-> 02773270 System.Linq.Enumerable+WhereEnumerableIterator`1[[Microsoft.Web.Administration.ApplicationPool, Microsoft.Web.Administration]]
-> 02772948 Microsoft.Web.Administration.ApplicationPoolCollection
-> 02772060 Microsoft.Web.Administration.ServerManager
002ef124 003f0359 Web.Administration.LeakExample.Program.Main(System.String[]) [c:\Users\Chuck\Documents\Visual Studio 2012\Projects\Web.Administration.LeakExample\Web.Administration.LeakExample\Program.cs @ 74]
ebp+50: 002ef168
-> 02772060 Microsoft.Web.Administration.ServerManager
Found 10 roots.
Devi accettare questa risposta per chiudere la discussione. –