Bug 333806

Summary: Sensors don't work if ksysguard launched under load
Product: [Unmaintained] ksysguard Reporter: Adam Porter <adam>
Component: ksysguardAssignee: KSysGuard Developers <ksysguard-bugs>
Status: RESOLVED WORKSFORME    
Severity: normal CC: richard.llom
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Adam Porter 2014-04-24 06:22:10 UTC 
I'm currently using KDE 4.11.6, but it's not in the version list.  This bug has been around for a long time, though.

The bug is simply that, often, if I launch ksysguard while the system is under load, especially I/O load (e.g. while launching other apps that cause lots of disk seeking), after ksysguard finishes loading, some of the sensors on my worksheet show no data or "Error".  If I then either open the display's properties and click OK, or restart ksysguard, the sensors work.

I'm guessing that it's some kind of timeout that expires if a sensor or some library takes too long to respond.  I've seen similar behavior with kioslaves (e.g. if I launch Dolphin while the system is under heavy I/O load, sometimes the directory listing will fail to load, but then immediately works if I refresh it).

Reproducible: Sometimes

Steps to Reproduce:
1.  Open ksysguard and configure a worksheet full of displays and sensors.
2.  Close ksysguard and flush the disk cache.
3.  Launch a program that takes a long time to load and causes lots of seeking, such as a browser with lots of addons.  (Or run several find processes in the background, something like that.)
4.  Launch ksysguard while the other program is loading.
5.  Wait for ksysguard to finish loading.
Actual Results:  
Several sensors may display values of 0 or "Error."

Expected Results:  
All sensors should work normally.

If a display is reconfigured, it usually causes the sensors to work.  Or if ksysguard is closed and restarted, the sensors usually work.
Comment 1 Andrew Crouthamel 2018-11-11 04:28:50 UTC 
Dear Bug Submitter,

This bug has been stagnant for a long time. Could you help us out and re-test if the bug is valid in the latest version? I am setting the status to NEEDSINFO pending your response, please change the Status back to REPORTED when you respond.

Thank you for helping us make KDE software even better for everyone!
Comment 2 Andrew Crouthamel 2018-11-21 04:43:54 UTC 
Dear Bug Submitter,

This is a reminder that this bug has been stagnant for a long time. Could you help us out and re-test if the bug is valid in the latest version? This bug will be moved back to REPORTED Status for manual review later, which may take a while. If you are able to, please lend us a hand.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Richard Llom 2019-03-11 10:34:51 UTC 
Works for me.