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2026-08-09 - 09:06
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sun Aug 09, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251624937,0sleep00-21swapper/019:25:050
347124637,0sleep10-21swapper/119:28:591
328724233,0sleep20-21swapper/219:27:002
334423731,0sleep30-21swapper/319:27:373
4160,0ktimersoftd/00-21swapper/022:31:410
36229966,0cyclictest21688-21kworker/0:000:58:300
36229960,0cyclictest20990-21python20:00:090
35160,0ktimersoftd/30-21swapper/322:31:413
339960,0migration/332029-21sh00:29:293
339960,0migration/326812-21idleruntime21:15:003
339960,0migration/317060-21sh23:21:503
339960,0migration/314004-21sh00:16:403
29805060,0irq/28-eth0-rx-7195-21memory23:15:043
29805060,0irq/28-eth0-rx-3068-21cut23:34:563
29805060,0irq/28-eth0-rx-26709-21kthreadcore21:35:023
29805060,0irq/28-eth0-rx-25953-21munin-run21:54:443
29805060,0irq/28-eth0-rx-18061-21perl00:39:593
29805060,0irq/28-eth0-rx-16338-21iostat_ios21:30:023
29805060,0irq/28-eth0-rx-14963-21port_sshpriv21:45:073
36249955,0cyclictest0-21swapper/223:32:572
36249955,0cyclictest0-21swapper/223:04:352
36249955,0cyclictest0-21swapper/200:04:582
36249953,0cyclictest3250-21irqbalance21:36:112
36249950,0cyclictest0-21swapper/223:27:552
36249950,0cyclictest0-21swapper/221:34:242
36249950,0cyclictest0-21swapper/219:54:462
36239955,0cyclictest0-21swapper/100:34:591
36239950,0cyclictest0-21swapper/123:10:001
36229955,0cyclictest24950-21kworker/0:123:49:460
36229955,0cyclictest24950-21kworker/0:123:44:500
36229955,0cyclictest24950-21kworker/0:123:35:120
36229955,0cyclictest24950-21kworker/0:123:26:100
36229955,0cyclictest24950-21kworker/0:123:20:180
36229955,0cyclictest24950-21kworker/0:123:14:480
36229955,0cyclictest24950-21kworker/0:123:13:120
36229955,0cyclictest24950-21kworker/0:100:09:580
36229955,0cyclictest24950-21kworker/0:100:04:480
36229955,0cyclictest24950-21kworker/0:100:00:100
36229955,0cyclictest21688-21kworker/0:000:50:220
36229955,0cyclictest21688-21kworker/0:000:44:500
36229955,0cyclictest21688-21kworker/0:000:40:300
36229955,0cyclictest21688-21kworker/0:000:30:440
36229955,0cyclictest21688-21kworker/0:000:20:180
36229955,0cyclictest14113-21kworker/0:223:04:460
36229955,0cyclictest14113-21kworker/0:222:59:460
36229955,0cyclictest14113-21kworker/0:222:55:020
36229955,0cyclictest14113-21kworker/0:222:51:120
36229955,0cyclictest14113-21kworker/0:222:45:560
36229955,0cyclictest14113-21kworker/0:222:40:060
36229955,0cyclictest14113-21kworker/0:222:19:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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