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2026-06-24 - 10:08
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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 Wed Jun 24, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2720529085,0sleep10-21swapper/119:22:381
2717625141,0sleep30-21swapper/319:22:163
2743024130,0sleep00-21swapper/019:25:130
2715323626,0sleep20-21swapper/219:22:032
27562991111,0cyclictest3524-21snmpd23:55:480
339960,0migration/33156-21sh21:44:483
339960,0migration/331129-21irqcore23:56:153
339960,0migration/331014-21sh00:13:453
339960,0migration/328934-21sh23:54:293
339960,0migration/324642-21sh23:15:243
339960,0migration/324032-21sh00:27:023
339960,0migration/323892-21kthreadcore23:31:173
339960,0migration/320880-21kthreadcore19:41:183
339960,0migration/320232-21sh23:49:203
339960,0migration/316320-21sh00:24:373
339960,0migration/313715-21sh22:50:323
29815060,0irq/29-eth0-tx-24254-21munin-node19:46:140
29805060,0irq/28-eth0-rx-10400-21perl22:11:163
275719966,0cyclictest0-21swapper/223:26:182
275719960,0cyclictest0-21swapper/200:00:312
275639965,0cyclictest3250-21irqbalance23:10:361
275629960,0cyclictest0-21swapper/023:50:380
149960,0migration/04326-21sh22:43:310
149960,0migration/017079-21taskset21:32:320
149960,0migration/016632-21sh22:12:080
149960,0migration/01089-21sh00:34:160
339950,0migration/3739-21runrttasks00:33:273
339950,0migration/3641-21hddtemp_smartct00:16:153
339950,0migration/35900-21taskset19:53:063
339950,0migration/330908-21fschecks_time22:01:133
339950,0migration/32964-21kthreadcore21:01:173
339950,0migration/328710-21taskset21:57:533
339950,0migration/328162-21aten_r1power_po00:51:113
339950,0migration/327659-21kthreadcore22:56:173
339950,0migration/327612-21if_eth1.221:21:153
339950,0migration/325056-21fschecks_time19:46:123
339950,0migration/32264-21munin-node21:26:163
339950,0migration/322251-21taskset20:52:513
339950,0migration/316188-21sendmail_mailqu21:31:223
339950,0migration/310689-21sh23:41:473
339950,0migration/310489-21kthreadcore19:56:163
339950,0migration/310193-21sh23:26:063
329950,0watchdog/37725-21seq22:06:263
329950,0watchdog/3452-21kthreadcore23:36:183
329950,0watchdog/328285-21sh22:39:103
329950,0watchdog/312719-21tr20:46:183
329950,0watchdog/30-21swapper/322:51:063
329950,0watchdog/30-21swapper/321:51:183
29815050,0irq/29-eth0-tx-6018-21grep21:26:190
29815050,0irq/29-eth0-tx-5976-21diskstats22:46:142
29815050,0irq/29-eth0-tx-29247-21munin-node22:41:232
29815050,0irq/29-eth0-tx-19388-21munin-node00:46:222
29815050,0irq/29-eth0-tx-17754-21fschecks_time00:26:122
29815050,0irq/29-eth0-tx-12414-21kthreadcore22:11:202
29815050,0irq/29-eth0-tx-10366-21diskstats21:31:132
29815050,0irq/29-eth0-tx-0-21swapper/222:51:052
29815050,0irq/29-eth0-tx-0-21swapper/222:07:222
29815050,0irq/29-eth0-tx-0-21swapper/020:41:200
29815050,0irq/29-eth0-tx-0-21swapper/020:31:090
29815050,0irq/29-eth0-tx-0-21swapper/020:26:160
29815050,0irq/29-eth0-tx-0-21swapper/020:21:190
29805050,0irq/28-eth0-rx-8543-21kthreadcore00:01:193
29805050,0irq/28-eth0-rx-26131-21ssh21:38:363
29805050,0irq/28-eth0-rx-20291-21grep00:46:143
29805050,0irq/28-eth0-rx-0-21swapper/323:25:463
29805050,0irq/28-eth0-rx-0-21swapper/323:06:513
29805050,0irq/28-eth0-rx-0-21swapper/323:01:173
29805050,0irq/28-eth0-rx-0-21swapper/322:44:193
29805050,0irq/28-eth0-rx-0-21swapper/322:31:133
29805050,0irq/28-eth0-rx-0-21swapper/322:30:133
29805050,0irq/28-eth0-rx-0-21swapper/322:21:123
29805050,0irq/28-eth0-rx-0-21swapper/322:16:013
29805050,0irq/28-eth0-rx-0-21swapper/321:46:233
29805050,0irq/28-eth0-rx-0-21swapper/320:36:123
29805050,0irq/28-eth0-rx-0-21swapper/300:43:473
29805050,0irq/28-eth0-rx-0-21swapper/300:37:483
29805050,0irq/28-eth0-rx-0-21swapper/300:10:143
275719955,0cyclictest0-21swapper/223:05:112
275719954,0cyclictest31039-21sort23:36:182
275719950,0cyclictest0-21swapper/222:17:152
275719950,0cyclictest0-21swapper/222:00:422
275719950,0cyclictest0-21swapper/220:57:102
275719950,0cyclictest0-21swapper/219:41:292
275719950,0cyclictest0-21swapper/200:06:492
275639955,0cyclictest999-21diskmemload23:20:391
275639950,0cyclictest0-21swapper/122:59:131
275639950,0cyclictest0-21swapper/100:40:541
275629955,0cyclictest999-21diskmemload23:44:480
275629955,0cyclictest0-21swapper/022:59:340
275629955,0cyclictest0-21swapper/022:54:120
275629950,0cyclictest0-21swapper/023:10:170
275629950,0cyclictest0-21swapper/022:48:500
275629950,0cyclictest0-21swapper/022:09:070
275629950,0cyclictest0-21swapper/022:01:330
259950,0migration/28217-21munin-node00:36:212
259950,0migration/26583-21kthreadcore21:26:192
259950,0migration/23623-21kthreadcore23:21:172
259950,0migration/228755-21munin-node19:26:132
259950,0migration/227790-21df_abs21:41:122
259950,0migration/226701-21irqrtprio23:16:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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