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2026-03-25 - 07:13
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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 Mar 25, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3009924738,0sleep20-21swapper/219:14:012
3022923727,0sleep30-21swapper/319:15:343
3012923322,0sleep00-21swapper/019:14:230
3027023123,0sleep10-21swapper/119:16:001
339960,0migration/325490-21sh23:37:343
339960,0migration/31119-21sh23:40:593
329960,0watchdog/33020-21sh21:32:173
29805060,0irq/28-eth0-rx-7043-21tr22:48:483
8305050,0irq/26-0000:00:16560-21latency_hist19:53:292
339950,0migration/39538-21latency_hist20:33:303
339950,0migration/38437-21switchtime19:43:553
339950,0migration/35463-21taskset23:05:373
339950,0migration/34929-21kthreadcore23:43:493
339950,0migration/332161-21munin-node19:18:463
339950,0migration/330567-21taskset22:04:273
339950,0migration/326911-21ksmtuned20:19:393
339950,0migration/323612-21taskset20:42:143
339950,0migration/323228-21kthreadcore21:43:473
339950,0migration/320723-21fschecks_count19:33:433
339950,0migration/320391-21kthreadcore19:53:473
339950,0migration/318222-21kthreadcore19:28:473
339950,0migration/318157-21fschecks_time22:18:503
339950,0migration/316807-21runrttasks23:32:113
339950,0migration/315136-21aten_r1power_fr21:58:423
339950,0migration/314027-21fschecks_time00:08:423
339950,0migration/313771-21fschecks_time20:13:433
339950,0migration/312894-21kthreadcore19:48:473
339950,0migration/311202-21aten_r1power_vo23:48:443
339950,0migration/310608-21kthreadcore20:08:483
329950,0watchdog/35573-21chrt20:50:163
329950,0watchdog/331413-21perl00:18:453
329950,0watchdog/33001-21df_inode21:13:443
329950,0watchdog/326573-21ssh23:54:333
329950,0watchdog/321728-21iostat21:03:443
329950,0watchdog/311707-21fschecks_time22:33:453
305549955,0cyclictest0-21swapper/223:44:312
305549955,0cyclictest0-21swapper/222:37:592
305549955,0cyclictest0-21swapper/221:37:552
305539955,0cyclictest0-21swapper/100:43:311
305539955,0cyclictest0-21swapper/100:27:451
305539954,0cyclictest6899-21crond22:09:291
305539954,0cyclictest21170-21awk19:33:451
305539950,0cyclictest0-21swapper/123:48:581
305539950,0cyclictest0-21swapper/123:33:501
305539950,0cyclictest0-21swapper/122:06:581
305539950,0cyclictest0-21swapper/122:00:111
305539950,0cyclictest0-21swapper/121:25:211
305539950,0cyclictest0-21swapper/100:08:311
305529955,0cyclictest4812-21kworker/0:223:46:350
305529955,0cyclictest4812-21kworker/0:222:58:490
305529955,0cyclictest10708-21kworker/0:000:14:070
305529953,0cyclictest5873-21munin-node20:08:470
29815050,0irq/29-eth0-tx-4509-21ssh23:03:552
29815050,0irq/29-eth0-tx-4072-21ssh22:47:542
29815050,0irq/29-eth0-tx-30031-21ssh22:03:552
29815050,0irq/29-eth0-tx-28602-21df_abs23:58:422
29815050,0irq/29-eth0-tx-22308-21awk00:13:432
29815050,0irq/29-eth0-tx-21540-21port_sshpriv00:28:522
29815050,0irq/29-eth0-tx-0-21swapper/222:09:312
29815050,0irq/29-eth0-tx-0-21swapper/020:30:010
29805050,0irq/28-eth0-rx-9666-21ssh22:30:413
29805050,0irq/28-eth0-rx-7280-21tr00:03:483
29805050,0irq/28-eth0-rx-29013-21fschecks_time22:43:443
29805050,0irq/28-eth0-rx-27901-21diskstats20:23:403
29805050,0irq/28-eth0-rx-2786-21sh23:59:253
29805050,0irq/28-eth0-rx-22532-21ssh00:30:213
29805050,0irq/28-eth0-rx-22260-21ssh23:14:153
29805050,0irq/28-eth0-rx-20651-21if_err_eth022:38:453
29805050,0irq/28-eth0-rx-0-21swapper/322:25:193
29805050,0irq/28-eth0-rx-0-21swapper/322:13:493
29805050,0irq/28-eth0-rx-0-21swapper/322:08:553
29805050,0irq/28-eth0-rx-0-21swapper/321:56:173
29805050,0irq/28-eth0-rx-0-21swapper/321:42:303
29805050,0irq/28-eth0-rx-0-21swapper/321:34:323
29805050,0irq/28-eth0-rx-0-21swapper/321:20:463
29805050,0irq/28-eth0-rx-0-21swapper/300:48:073
29805050,0irq/28-eth0-rx-0-21swapper/300:26:343
259950,0migration/27306-21kthreadcore22:48:482
259950,0migration/21804-21sh23:42:552
249950,0watchdog/213001-21processes00:23:532
19150,0ktimersoftd/10-21swapper/122:53:291
19150,0ktimersoftd/10-21swapper/121:30:211
179950,0migration/19308-21sh22:29:401
179950,0migration/16657-21fschecks_time20:08:441
179950,0migration/16536-21latency_hist00:23:301
179950,0migration/15923-21sh21:53:021
179950,0migration/14870-21cpuspeed_turbos00:03:431
179950,0migration/130075-21sh23:03:111
179950,0migration/127797-21cpuspeed_turbos20:23:391
179950,0migration/123377-21taskset19:56:361
179950,0migration/119950-21taskset20:17:261
179950,0migration/11982-21idleruntime-cro22:28:291
179950,0migration/118898-21kthreadcore00:28:491
179950,0migration/117621-21fschecks_time20:38:451
179950,0migration/11729-21sshd19:42:001
179950,0migration/114275-21kthreadcore21:38:471
179950,0migration/113213-21sh22:53:341
149950,0migration/08569-21latency_hist22:13:290
149950,0migration/08345-21taskset00:42:530
149950,0migration/07724-21kthreadcore22:48:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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