Status/Resolution/Reason: Closed/Fixed/Fixed
Reporter/Name(from Bugbase): / ext-user ()
Created: 10/05/2016
Components: Performance
Versions: 2016
Failure Type: Performance Issue
Found In Build/Fixed In Build: 2016,0,0,300359 / 2016.0.04.302267
Priority/Frequency: Major / Some users will encounter
Locale/System: English / Windows 7 SP1 64-bit
Vote Count: 0
Problem:
external session storage: Redis becomes unresponsive under load.
Method:
use Redis for storing sessions.
pump in load with jMeter on an application that creates sessions.
Result:
apparently, the clean up Lua script is taking a lot of time to execute the cleanup in Redis storage.
CF error:
Oct 6, 2016 01:04:11 AM Error [http-nio-8502-exec-9] - Could not get a resource from the pool The specific sequence of files included or processed is:
C:\ColdFusion2016\cfusion\wwwroot\sessionsVariants\sessionTimeOutVariant5\landingPage.cfm''
errors logged in redis log:
[6620] 06 Oct 01:03:33.043 # Lua slow script detected: still in execution after 10932 milliseconds. You can try killing the script using the SCRIPT KILL command.
[6620] 06 Oct 01:04:06.575 # Lua slow script detected: still in execution after 15129 milliseconds. You can try killing the script using the SCRIPT KILL command.
Expected:
Workaround:
----------------------------- Additional Watson Details -----------------------------
Watson Bug ID: 4195240
External Customer Info:
External Company:
External Customer Name:
External Customer Email:Attachments:
Comments: