You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-12 - 08:45
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 20 highest latencies:
System rackaslot8.osadl.org (updated Sat Jul 12, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145302315282,21sleep20-21swapper/219:06:122
146062261227,22sleep10-21swapper/119:06:561
126312261225,21sleep00-21swapper/019:05:030
147932259227,20sleep30-21swapper/319:09:233
266142600,0sleep10-21swapper/120:45:141
25172590,0sleep00-21swapper/023:47:130
314392550,1sleep30-21swapper/321:50:243
114452500,0sleep20-21swapper/223:54:072
91922390,0sleep10-21swapper/121:12:171
320022220,0sleep00-21swapper/000:09:160
314672200,0sleep10-21swapper/120:55:151
102152180,1sleep00-21swapper/021:35:220
1494999173,9cyclictest29772-21sh00:06:531
201022160,0sleep20-21swapper/221:42:542
162602150,0sleep10-21swapper/123:57:071
1494999150,2cyclictest16388-21ssh22:48:511
1494999143,6cyclictest29741-11brltty21:05:541
14958991311,1cyclictest34-21ksoftirqd/319:15:023
1494999132,6cyclictest4701-21cat19:55:181
1494999132,6cyclictest30654-21snmpd21:45:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional