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2025-11-14 - 03:11
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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 rack1slot3.osadl.org (updated Fri Nov 14, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251544599149,1cyclictest0-21swapper/322:25:123
2515445991411,1cyclictest0-21swapper/300:30:153
251544599130,12cyclictest0-21swapper/321:45:123
251544599130,12cyclictest0-21swapper/321:35:113
251544599130,11cyclictest0-21swapper/322:05:133
2515445991211,0cyclictest0-21swapper/320:00:113
251544599121,0cyclictest0-21swapper/319:15:143
251544599120,11cyclictest0-21swapper/323:55:213
251544599120,11cyclictest0-21swapper/322:00:133
251544599120,11cyclictest0-21swapper/321:40:163
251544599120,11cyclictest0-21swapper/320:30:193
251544599120,0cyclictest0-21swapper/322:30:133
2515445991111,0cyclictest0-21swapper/322:45:163
2515445991110,1cyclictest0-21swapper/300:00:123
2515445991110,0cyclictest0-21swapper/320:45:153
251544599110,10cyclictest69450irq/121-eno123:32:333
251544599110,10cyclictest69450irq/121-eno123:19:473
251544599110,10cyclictest69450irq/121-eno122:35:253
251544599110,10cyclictest69450irq/121-eno119:35:153
251544599110,10cyclictest0-21swapper/323:45:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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