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2026-03-22 - 05:54
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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 Sun Mar 22, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191690,0ktimersoftd/125107-21perf19:18:041
3187024838,0sleep30-21swapper/319:13:543
3213523526,0sleep20-21swapper/219:16:572
3210023523,0sleep00-21swapper/019:16:350
323149988,0cyclictest2970-21sensors20:23:350
339960,0migration/332251-21kthreadcore22:43:353
339960,0migration/327559-21sh22:39:173
339960,0migration/321601-21irqrtprio21:23:303
339960,0migration/321231-21sh22:54:563
339960,0migration/314518-21kthreadcore23:48:323
339960,0migration/313213-21sh21:36:183
323169960,0cyclictest0-21swapper/223:36:382
323169960,0cyclictest0-21swapper/222:58:292
29815060,0irq/29-eth0-tx-14649-21munin-node19:28:270
29815060,0irq/29-eth0-tx-11449-21munin-node21:18:330
29815060,0irq/29-eth0-tx-0-21swapper/021:13:320
29805060,0irq/28-eth0-rx-25336-21perl00:33:293
29805060,0irq/28-eth0-rx-0-21swapper/300:16:303
259960,0migration/2913-21idleruntime-cro22:08:152
259960,0migration/230949-21pmu-power23:18:342
149960,0migration/026842-21sh22:23:150
149960,0migration/016711-21sh22:13:500
8305050,0irq/26-0000:00:20256-21port_sshpriv22:53:332
35150,0ktimersoftd/30-21swapper/300:21:583
339950,0migration/36779-21taskset21:51:033
339950,0migration/34723-21irqcore22:28:323
339950,0migration/33640-21kthreadcore23:03:333
339950,0migration/330268-21sh21:45:283
339950,0migration/330083-21kthreadcore19:58:323
339950,0migration/329512-21taskset22:59:073
339950,0migration/327841-21hwlatdetect23:38:313
339950,0migration/325565-21latency_hist20:43:143
339950,0migration/325096-21aten_r1power_fr22:03:263
339950,0migration/321991-21kthreadcore22:18:323
339950,0migration/320027-21kthreadcore21:58:323
339950,0migration/316802-21kthreadcore20:13:333
339950,0migration/316543-21kthreadcore21:18:333
339950,0migration/316218-21munin-node19:28:313
339950,0migration/314902-21kthreadcore19:48:323
339950,0migration/313525-21kthreadcore23:28:333
339950,0migration/310643-21taskset19:45:373
339950,0migration/310553-21kthreadcore21:53:323
323169955,0cyclictest0-21swapper/223:50:212
323169955,0cyclictest0-21swapper/222:20:482
323169955,0cyclictest0-21swapper/200:01:052
323169950,0cyclictest0-21swapper/223:15:592
323169950,0cyclictest0-21swapper/222:43:302
323159955,0cyclictest0-21swapper/123:48:391
323159955,0cyclictest0-21swapper/123:08:361
323159955,0cyclictest0-21swapper/121:29:361
323159950,0cyclictest0-21swapper/123:16:581
323159950,0cyclictest0-21swapper/121:13:311
323159950,0cyclictest0-21swapper/100:45:341
329950,0watchdog/37342-21cut21:13:343
329950,0watchdog/319856-21cut00:28:343
329950,0watchdog/31764-21cut23:58:343
329950,0watchdog/30-21swapper/323:33:303
29815050,0irq/29-eth0-tx-7773-21munin-node20:53:260
29815050,0irq/29-eth0-tx-6156-21kthreadcore23:43:332
29815050,0irq/29-eth0-tx-6156-21kthreadcore23:43:332
29815050,0irq/29-eth0-tx-3362-21munin-node22:28:302
29815050,0irq/29-eth0-tx-28903-21ssh22:43:072
29815050,0irq/29-eth0-tx-22173-21munin-node21:03:270
29815050,0irq/29-eth0-tx-21215-21if_err_eth021:23:282
29815050,0irq/29-eth0-tx-10311-21cut22:48:332
29815050,0irq/29-eth0-tx-0-21swapper/222:00:222
29815050,0irq/29-eth0-tx-0-21swapper/221:48:192
29815050,0irq/29-eth0-tx-0-21swapper/200:04:022
29815050,0irq/29-eth0-tx-0-21swapper/021:08:320
29815050,0irq/29-eth0-tx-0-21swapper/020:48:200
29805050,0irq/28-eth0-rx-6205-21smartctl00:03:283
29805050,0irq/28-eth0-rx-5116-21if_eth020:28:293
29805050,0irq/28-eth0-rx-31121-21kthreadcore21:28:323
29805050,0irq/28-eth0-rx-29387-21aten_r1power_en21:08:253
29805050,0irq/28-eth0-rx-28638-21irqrtprio22:23:323
29805050,0irq/28-eth0-rx-28067-21expr19:33:393
29805050,0irq/28-eth0-rx-20456-21kthreadcore23:13:323
29805050,0irq/28-eth0-rx-20353-21cut23:53:263
29805050,0irq/28-eth0-rx-14303-21munin-node00:08:293
29805050,0irq/28-eth0-rx-0-21swapper/323:11:583
29805050,0irq/28-eth0-rx-0-21swapper/322:51:583
29805050,0irq/28-eth0-rx-0-21swapper/322:33:333
29805050,0irq/28-eth0-rx-0-21swapper/322:14:423
29805050,0irq/28-eth0-rx-0-21swapper/300:43:433
29805050,0irq/28-eth0-rx-0-21swapper/300:25:243
27150,0ktimersoftd/20-21swapper/221:41:062
259950,0migration/29495-21kthreadcore21:33:322
259950,0migration/25987-21kthreadcore21:13:332
259950,0migration/24625-21kthreadcore22:08:332
259950,0migration/225782-21kthreadcore21:43:302
259950,0migration/225391-21kthreadcore21:03:332
259950,0migration/224035-21taskset00:32:572
259950,0migration/217654-21crond00:48:152
259950,0migration/217038-21sh22:14:472
259950,0migration/21690-21idleruntime00:38:302
259950,0migration/214325-21kthreadcore19:48:312
249950,0watchdog/218644-21kthreadcore00:08:342
19150,0ktimersoftd/10-21swapper/121:41:061
179950,0migration/126524-21sh22:22:201
179950,0migration/113923-21kthreadcore21:18:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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