is it possible to check when i recycled the app pool last time, i want to check the date when my app pool was last recycled, is there anything in IIS i can get this info.
2
- Put logging statement in Application_Start in Global.asax, that is programatically. Event Viewr will be a nice place to look if you have no access to code.This article explain how to set up application restart event loggingEmmanuel N– Emmanuel N2011-12-14 20:47:38 +00:00Commented Dec 14, 2011 at 20:47
- 1I asked a similar question which may be useful if you're in a shared hosting environment where you can't access the event log.Drew Noakes– Drew Noakes2012-08-07 10:36:24 +00:00Commented Aug 7, 2012 at 10:36
Add a comment |
6 Answers
You could easily find the latest recycle time by using this powershell snippet:
(Get-Process -Id <ProcessId>).StartTime Therefore find the process id of your web application in task manager.
First add the following columns via Tools > Select columns... : select PID and Command Line.
Look for any w3wp.exe process and find your application by examining the command-line (application pool name is part of it) and note down its PID.
Then run the powershell script to find the latest recycle time:
Hope this helps
7 Comments
nmunson
An alternative to having the find the process ID is using the IIS snapin, and saying: dir IIS:\AppPools_APPNAME_\WorkerProcesses.
shadi
Don't forget to run Powershell as an administrator
Christopher Stevenson
As a one-liner:
ps w3wp | select ProcessName, StartTime on PS v4.
krlzlx
ps w3wp | select ProcessName, Id, StartTime | ft -AutoSize to display also the id of the process
TSga
Thanks everyone, I used this to determine that the recycling was causing one of our App Pools to become unresponsive for ~ 3 hours once it started. The error was with w3wp.exe and module ntdll.dll, it was spotted because we were grabbing stress test data overnight monitoring server resources and saw a huge dip, which returned once the recycling completed (or the previous idle timeout was reached). Work around is to simply disable recycling, or set to specific times as to not affect clients.
|
If logging on recycles is turned on you can see this in the Event Viewer (System Log).
If it's not you can use PerfMon counters to see Process-Elapsed Time on the W3WP.exe representing your application pool (which will be the number of seconds since the last recycle)
4 Comments
deadlydog
Where in the Event Viewer? The
Application logs? System logs? Somewhere else?
defines
Start Menu (Windows) > "Event Viewer"
e-Fungus
How do you check if login is turned on for recycles?
somedotnetguy
actually using PerfMon I found that in the menu click :"APP_POOL_WAS" and then simply select all (default). Then you have all instances, and a column for uptime and recycle count.
To get all the information with one command use the Get-WmiObject instead of get-process.
Get-WmiObject Win32_Process -Filter "name = 'w3wp.exe'" | Select-Object Name, @{"name"="ApplicationPool";expression={(($_).CommandLine).split('"')[1] }},@{"name"="Starttime";expression={$_.ConvertToDateTime($_.CreationDate)}} 
Comments
In Powershell:
(ps -id (Get-IISAppPool -Name <name>).WorkerProcesses.ProcessId).StartTime If the pool has been recycled, then for some reason you may need to re-import the module to get the new processId:
$pool = Get-IISAppPool -Name <name> $pool.recycle() Import-Module -Force IISAdministration (ps -id (Get-IISAppPool -Name <name>).WorkerProcesses.ProcessId).StartTime 
1 Comment
Adel Mourad
good, and to escape the app_pool name just wrap it with single quotations
This will give you a list of all the w3wp processes on the machine and their start times. The ErrorAction prevents the commandlet from throwing an error if no websites are started and therefore no w3wp processes exist
ps w3wp -ErrorAction SilentlyContinue | select ProcessName, StartTime Tested on Server 2012 R2 with powershell v4.0
Comments
Get the worker process uptime(Recommended):
$poolName = <your pool name goes here eg. DefaultPool> $poolProcess =(gwmi -NS 'root\WebAdministration' -class 'WorkerProcess' | select AppPoolName,ProcessId | Where-Object { $_.AppPoolName -eq $poolName } ) $lastStartTime=(Get-Process -Id $poolProcess.ProcessId).StartTime write-output $lastStartTime For it to work, make sure you have 'IIS management scripts and tools' enabled.
Second, way is using Event log, if enabled
Get-Eventlog -LogName system -Newest 1 -Source "WAS" -Message "*recycle of all worker processes in application pool '$poolName'*") With Get-Eventlog you can use -After/-Before argument to further limit the result.
To check if Application pool is recycled in last 'X' minutes, following powershell snippet can be used:
function isRecycledInLastNMinutes($appPoolName, $lminutes){ $beforeDate = Get-Date -format 'u' $afterDate = $beforeDate.addMinutes(-$lminutes) $result = (Get-Eventlog -LogName system -Newest 1 -Source "WAS" -After $afterDate -Before $beforeDate -Message "*recycle of all worker processes in application pool '$appPoolName'*") if( $result.length -eq 1){ return $true }else{ retrun $false } } 