You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-08-27 - 05:50
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
Characteristics of the 10 highest latencies:
System rackcslot2.osadl.org (updated Wed Aug 27, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229992750,1sleep122996-21sendmail-msp23:57:231
1657426755,8sleep00-21swapper/019:04:530
1504826751,8sleep10-21swapper/119:02:311
16995993119,10cyclictest17599-21munin-node21:27:531
16994993110,20cyclictest0-21swapper/022:27:280
16994993030,0cyclictest0-21swapper/023:59:340
1699599290,1cyclictest27489-21ssh22:32:181
16994992910,14cyclictest0-21swapper/023:12:330
16995992826,1cyclictest0-21swapper/122:37:391
16994992725,1cyclictest13108-21kernelversion23:42:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional