You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-02-17 - 18:53
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackeslot6.osadl.org (updated Mon Feb 17, 2025 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286530899122113,6cyclictest2956520-21apt-get12:33:290
28653089910493,8cyclictest2884907-21latency_hist08:10:010
28653089910195,3cyclictest2881737-21kworker/u8:1+flush-179:008:00:200
2865308999888,7cyclictest3105085-21systemd-journal12:00:200
2865308999886,9cyclictest2924418-21latency_hist10:30:010
2865308999584,9cyclictest2934500-21latency_hist11:10:000
2865309999356,23cyclictest2917515-21latency_hist10:00:001
2865309999278,11cyclictest2955179-21apt-get12:30:071
2865308999283,7cyclictest2876442-21latency_hist07:45:010
2865309998979,7cyclictest2939541-21latency_hist11:30:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional