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2026-07-10 - 01:42
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Fri Jul 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2041923726,0sleep20-21swapper/219:26:552
2042823524,0sleep10-21swapper/119:27:021
1939623423,0sleep00-21swapper/019:22:370
2024522925,0sleep30-21swapper/319:24:523
205169970,0cyclictest28898-21idleruntime19:32:301
339960,0migration/37539-21idleruntime-cro23:42:183
339960,0migration/321785-21sh23:30:293
329960,0watchdog/315172-21tr00:42:333
29805060,0irq/28-eth0-rx-29228-21cut22:37:373
29805060,0irq/28-eth0-rx-26156-21cut00:27:373
29805060,0irq/28-eth0-rx-13423-21perl00:22:333
29805060,0irq/28-eth0-rx-12402-21iostat_ios21:52:353
205169960,0cyclictest0-21swapper/122:47:321
205159960,0cyclictest0-21swapper/023:35:260
179960,0migration/123373-21rt-features19:47:381
149960,0migration/027157-21sh00:27:370
149960,0migration/022649-21sh00:45:370
149960,0migration/013790-21missed_timers23:42:370
339950,0migration/39674-21taskset20:23:573
339950,0migration/39577-21runrttasks19:40:213
339950,0migration/37801-21kthreadcore21:47:353
339950,0migration/3714-21aten_r1power_en22:42:303
339950,0migration/332497-21kthreadcore22:57:363
339950,0migration/33069-21runrttasks23:02:243
339950,0migration/330271-21kthreadcore20:17:343
339950,0migration/328430-21taskset23:16:143
339950,0migration/327022-21munin-node20:57:353
339950,0migration/324880-21irqcore00:47:373
339950,0migration/324822-21munin-node19:52:293
339950,0migration/320752-21kthreadcore00:07:373
339950,0migration/320578-21taskset20:11:323
339950,0migration/318581-21idleruntime21:17:323
339950,0migration/310660-21munin-node22:47:363
329950,0watchdog/32868-21sh00:15:323
329950,0watchdog/318782-21cut22:32:403
329950,0watchdog/318727-21kthreadcore21:37:363
329950,0watchdog/317536-21aten_r1power_vo20:32:283
329950,0watchdog/30-21swapper/323:42:203
329950,0watchdog/30-21swapper/323:18:123
329950,0watchdog/30-21swapper/323:18:123
329950,0watchdog/30-21swapper/321:22:363
329950,0watchdog/30-21swapper/320:47:363
29815050,0irq/29-eth0-tx-23995-21kthreadcore22:52:352
29815050,0irq/29-eth0-tx-13678-21munin-node20:07:300
29815050,0irq/29-eth0-tx-10200-21munin-node20:27:320
29815050,0irq/29-eth0-tx-0-21swapper/223:59:072
29815050,0irq/29-eth0-tx-0-21swapper/222:02:592
29805050,0irq/28-eth0-rx-5760-21cut23:57:373
29805050,0irq/28-eth0-rx-5131-21irqcore00:17:363
29805050,0irq/28-eth0-rx-30056-21kthreadcore23:52:373
29805050,0irq/28-eth0-rx-24841-21kthreadcore23:32:373
29805050,0irq/28-eth0-rx-11781-21python23:22:443
29805050,0irq/28-eth0-rx-0-21swapper/323:47:193
29805050,0irq/28-eth0-rx-0-21swapper/322:31:443
29805050,0irq/28-eth0-rx-0-21swapper/322:23:223
29805050,0irq/28-eth0-rx-0-21swapper/322:22:133
29805050,0irq/28-eth0-rx-0-21swapper/322:12:333
29805050,0irq/28-eth0-rx-0-21swapper/322:10:143
29805050,0irq/28-eth0-rx-0-21swapper/322:03:223
29805050,0irq/28-eth0-rx-0-21swapper/321:58:333
29805050,0irq/28-eth0-rx-0-21swapper/321:32:353
29805050,0irq/28-eth0-rx-0-21swapper/321:30:203
29805050,0irq/28-eth0-rx-0-21swapper/320:37:283
29805050,0irq/28-eth0-rx-0-21swapper/319:47:373
29805050,0irq/28-eth0-rx-0-21swapper/300:32:443
29805050,0irq/28-eth0-rx-0-21swapper/300:02:463
205179955,0cyclictest0-21swapper/200:47:312
205179950,0cyclictest0-21swapper/222:40:462
205169955,0cyclictest0-21swapper/122:05:361
205169955,0cyclictest0-21swapper/121:22:331
205169950,0cyclictest0-21swapper/122:12:411
205169950,0cyclictest0-21swapper/100:52:241
205169950,0cyclictest0-21swapper/100:17:141
205159955,0cyclictest0-21swapper/023:23:560
205159955,0cyclictest0-21swapper/019:52:300
205159954,0cyclictest1690-21ssh22:59:200
205159950,0cyclictest0-21swapper/023:48:120
205159950,0cyclictest0-21swapper/023:08:380
205159950,0cyclictest0-21swapper/021:13:520
179950,0migration/15615-21taskset22:23:501
179950,0migration/13877-21munin-node00:32:401
179950,0migration/127234-21kthreadcore00:47:391
179950,0migration/118338-21kthreadcore00:42:401
179950,0migration/11466-21fschecks_time22:42:321
169950,0watchdog/12116-21grep23:57:321
169950,0watchdog/119524-21perl00:07:321
169950,0watchdog/114617-21kthreadcore00:02:361
169950,0watchdog/111296-21sed22:07:441
149950,0migration/09817-21munin-node22:47:320
149950,0migration/09065-21kthreadcore20:47:350
149950,0migration/06915-21sh23:40:410
149950,0migration/05546-21kthreadcore21:27:340
149950,0migration/05355-21kthreadcore20:22:330
149950,0migration/03254-21kthreadcore23:57:360
149950,0migration/031924-21kthreadcore21:02:340
149950,0migration/031632-21kthreadcore00:32:350
149950,0migration/031328-21kthreadcore20:17:350
149950,0migration/03046-21kthreadcore22:22:360
149950,0migration/030380-21kthreadcore21:42:380
149950,0migration/030008-21kthreadcore20:37:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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