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2026-09-07 - 03:50
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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 Mon Sep 07, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2657326362,0sleep20-21swapper/219:30:262
2666425352,0sleep10-21swapper/119:31:291
2650624231,0sleep00-21swapper/019:29:400
2640923927,0sleep30-21swapper/319:28:313
267869970,0cyclictest0-21swapper/000:42:270
339960,0migration/38919-21sh00:58:023
339960,0migration/323005-21sh21:42:023
339960,0migration/319552-21sh22:32:563
339960,0migration/318759-21munin-node20:07:273
339960,0migration/311434-21latency_hist23:47:083
329960,0watchdog/38819-21ls21:52:223
29805060,0irq/28-eth0-rx-6472-21diskstats22:47:203
29805060,0irq/28-eth0-rx-20705-21ssh00:09:013
29805060,0irq/28-eth0-rx-0-21swapper/300:01:273
267889960,0cyclictest0-21swapper/223:23:522
267879960,0cyclictest0-21swapper/121:46:531
267869960,0cyclictest0-21swapper/022:02:350
179960,0migration/127817-21fschecks_time23:37:231
149960,0migration/05605-21aten_r1power_fr20:02:210
8305050,0irq/26-0000:00:31821-21idleruntime-cro21:47:072
8305050,0irq/26-0000:00:1907-21cut20:22:072
339950,0migration/39546-21fschecks_count19:42:183
339950,0migration/37958-21kthreadcore21:32:263
339950,0migration/37025-21kthreadcore23:22:283
339950,0migration/327750-21latency_hist22:22:083
339950,0migration/326415-21runrttasks23:17:243
339950,0migration/324685-21kthreadcore00:12:273
339950,0migration/324676-21munin-node19:52:253
339950,0migration/32457-21df_abs22:07:213
339950,0migration/323936-21kthreadcore20:57:253
339950,0migration/323589-21kthreadcore20:12:253
339950,0migration/322968-21sh00:30:103
339950,0migration/322211-21kthreadcore21:17:263
339950,0migration/317552-21kthreadcore20:52:263
339950,0migration/316509-21kthreadcore22:52:263
339950,0migration/314706-21kthreadcore21:12:263
339950,0migration/311777-21taskset00:02:503
339950,0migration/311523-21munin-node22:12:243
339950,0migration/310821-21kthreadcore00:42:263
329950,0watchdog/3626-21irqrtprio23:02:273
329950,0watchdog/35271-21grep21:47:263
329950,0watchdog/35052-21python21:27:303
329950,0watchdog/327599-21perl23:37:233
329950,0watchdog/327080-21kthreadcore22:57:263
329950,0watchdog/323430-21cut21:42:183
329950,0watchdog/321406-21kthreadcore20:32:263
29815050,0irq/29-eth0-tx-15618-21grep00:07:242
29815050,0irq/29-eth0-tx-0-21swapper/221:32:272
29805050,0irq/28-eth0-rx-4358-21netstat00:17:283
29805050,0irq/28-eth0-rx-31688-21kthreadcore20:17:263
29805050,0irq/28-eth0-rx-30250-21diskstats22:42:203
29805050,0irq/28-eth0-rx-20630-21diskstats23:52:223
29805050,0irq/28-eth0-rx-20630-21diskstats23:52:223
29805050,0irq/28-eth0-rx-17837-21port_sshpriv23:47:293
29805050,0irq/28-eth0-rx-0-21swapper/323:32:213
29805050,0irq/28-eth0-rx-0-21swapper/323:12:283
29805050,0irq/28-eth0-rx-0-21swapper/322:37:383
29805050,0irq/28-eth0-rx-0-21swapper/322:27:263
29805050,0irq/28-eth0-rx-0-21swapper/322:02:233
29805050,0irq/28-eth0-rx-0-21swapper/321:22:243
29805050,0irq/28-eth0-rx-0-21swapper/320:22:263
29805050,0irq/28-eth0-rx-0-21swapper/319:37:253
29805050,0irq/28-eth0-rx-0-21swapper/300:52:253
29805050,0irq/28-eth0-rx-0-21swapper/300:40:003
29805050,0irq/28-eth0-rx-0-21swapper/300:32:273
267889955,0cyclictest0-21swapper/222:24:072
267889955,0cyclictest0-21swapper/221:56:222
267889954,0cyclictest2913-21grep23:57:332
267889950,0cyclictest0-21swapper/223:38:512
267889950,0cyclictest0-21swapper/221:07:202
267879955,0cyclictest0-21swapper/123:48:071
267879955,0cyclictest0-21swapper/122:54:311
267879955,0cyclictest0-21swapper/100:24:041
267879954,0cyclictest13522-21grep22:32:241
267879950,0cyclictest0-21swapper/123:24:471
267879950,0cyclictest0-21swapper/122:22:401
267869954,0cyclictest3453-21ps21:07:250
267869950,0cyclictest0-21swapper/022:51:090
267869950,0cyclictest0-21swapper/022:39:570
267869950,0cyclictest0-21swapper/021:55:200
267869950,0cyclictest0-21swapper/000:34:150
267869950,0cyclictest0-21swapper/000:07:370
259950,0migration/29497-21munin-node23:42:342
259950,0migration/23461-21kthreadcore23:02:282
259950,0migration/227733-21kthreadcore00:32:282
259950,0migration/226542-21sh22:19:112
259950,0migration/222267-21sh00:28:062
259950,0migration/221188-21hddtemp_smartct23:52:232
259950,0migration/221188-21hddtemp_smartct23:52:232
259950,0migration/219585-21kthreadcore21:57:262
259950,0migration/21683-21kthreadcore19:57:252
259950,0migration/210905-21diskmemload22:12:232
179950,0migration/131682-21kthreadcore20:17:261
179950,0migration/124439-21hddtemp_smartct19:52:221
179950,0migration/123283-21sh00:12:251
179950,0migration/123118-21timerwakeupswit21:17:331
169950,0watchdog/123149-21ssh23:12:431
169950,0watchdog/10-21swapper/121:37:221
149950,0migration/09016-21sh22:08:010
149950,0migration/07974-21sh23:22:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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