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2026-04-20 - 00:05
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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 Apr 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2592424938,0sleep10-21swapper/107:17:561
2585423928,0sleep30-21swapper/307:17:103
2585823627,0sleep20-21swapper/207:17:132
2541023026,0sleep00-21swapper/007:15:590
262249970,0cyclictest0-21swapper/212:15:552
4160,0ktimersoftd/00-21swapper/007:50:570
35160,0ktimersoftd/30-21swapper/307:50:573
339960,0migration/39832-21kthreadcore10:35:553
339960,0migration/37849-21sh09:39:473
339960,0migration/34936-21munin-node10:15:503
339960,0migration/330167-21sh11:44:403
339960,0migration/317238-21sh12:13:583
339960,0migration/317233-21sh10:00:593
339960,0migration/316001-21kthreadcore08:40:563
339960,0migration/315812-21sh10:56:303
329960,0watchdog/327441-21irqcore11:05:513
29805060,0irq/28-eth0-rx-6373-21ntpq10:50:573
29805060,0irq/28-eth0-rx-1660-21tail12:05:513
29805060,0irq/28-eth0-rx-13933-21df_abs11:35:503
29805060,0irq/28-eth0-rx-10662-21sh11:14:483
29805060,0irq/28-eth0-rx-0-21swapper/310:28:153
27160,0ktimersoftd/20-21swapper/207:50:572
262249960,0cyclictest0-21swapper/212:39:152
262239965,0cyclictest26823-21sed09:10:541
262229960,0cyclictest0-21swapper/010:54:030
149960,0migration/06872-21idleruntime-cro11:50:370
149960,0migration/018175-21sh10:02:410
8305050,0irq/26-0000:00:19404-21crond08:45:352
339950,0migration/38668-21kthreadcore11:30:563
339950,0migration/34385-21sendmail_mailtr09:15:583
339950,0migration/33600-21kthreadcore11:45:563
339950,0migration/330906-21fschecks_time07:45:493
339950,0migration/330607-21ntp_offset12:00:583
339950,0migration/326611-21kthreadcore08:25:533
339950,0migration/325761-21kthreadcore09:10:533
339950,0migration/325660-21munin-node08:45:573
339950,0migration/32484-21munin-node08:10:513
339950,0migration/323747-21fschecks_time07:40:493
339950,0migration/323747-21fschecks_time07:40:493
339950,0migration/323722-21taskset11:59:213
339950,0migration/318132-21kthreadcore08:20:533
339950,0migration/318045-21kthreadcore09:25:543
339950,0migration/317599-21irqrtprio09:05:533
339950,0migration/315564-21taskset09:01:543
339950,0migration/313590-21runrttasks09:25:003
329950,0watchdog/34122-21ssh12:42:563
329950,0watchdog/330900-21grep10:10:513
329950,0watchdog/329514-21rm11:25:513
329950,0watchdog/318349-21if_err_eth1.309:45:513
329950,0watchdog/310339-21cat08:15:553
329950,0watchdog/30-21swapper/310:40:513
29815050,0irq/29-eth0-tx-0-21swapper/210:36:032
29805050,0irq/28-eth0-rx-9072sleep308:07:213
29805050,0irq/28-eth0-rx-4860-21kthreadcore09:55:553
29805050,0irq/28-eth0-rx-21612-21awk12:35:543
29805050,0irq/28-eth0-rx-20728-21sh10:05:533
29805050,0irq/28-eth0-rx-20448-21grep11:00:543
29805050,0irq/28-eth0-rx-0-21swapper/312:25:563
29805050,0irq/28-eth0-rx-0-21swapper/312:22:393
29805050,0irq/28-eth0-rx-0-21swapper/312:20:083
29805050,0irq/28-eth0-rx-0-21swapper/311:20:543
29805050,0irq/28-eth0-rx-0-21swapper/311:16:493
29805050,0irq/28-eth0-rx-0-21swapper/310:45:533
29805050,0irq/28-eth0-rx-0-21swapper/310:20:453
29805050,0irq/28-eth0-rx-0-21swapper/309:50:543
29805050,0irq/28-eth0-rx-0-21swapper/309:31:513
29805050,0irq/28-eth0-rx-0-21swapper/307:25:523
27150,0ktimersoftd/20-21swapper/212:49:302
262249955,0cyclictest0-21swapper/211:53:032
262249955,0cyclictest0-21swapper/211:36:202
262249955,0cyclictest0-21swapper/209:30:322
262249950,0cyclictest0-21swapper/212:05:492
262249950,0cyclictest0-21swapper/210:21:552
262249950,0cyclictest0-21swapper/210:01:352
262249950,0cyclictest0-21swapper/209:40:372
262239955,0cyclictest0-21swapper/108:56:041
262229955,0cyclictest16894-21kworker/0:009:21:090
262229955,0cyclictest16894-21kworker/0:009:15:430
262229955,0cyclictest16894-21kworker/0:009:10:370
262229955,0cyclictest16894-21kworker/0:009:05:410
262229955,0cyclictest16894-21kworker/0:009:00:490
262229955,0cyclictest16894-21kworker/0:008:55:430
262229955,0cyclictest16894-21kworker/0:008:50:430
262229955,0cyclictest16894-21kworker/0:008:45:590
262229955,0cyclictest16894-21kworker/0:008:40:530
262229955,0cyclictest16894-21kworker/0:008:35:410
262229955,0cyclictest16894-21kworker/0:008:30:370
262229955,0cyclictest16894-21kworker/0:008:25:510
262229955,0cyclictest15375-21kworker/0:208:20:450
262229955,0cyclictest15375-21kworker/0:208:15:370
262229955,0cyclictest15375-21kworker/0:208:10:390
262229955,0cyclictest15375-21kworker/0:208:05:410
262229955,0cyclictest15375-21kworker/0:208:00:590
262229955,0cyclictest15375-21kworker/0:207:56:030
262229955,0cyclictest15375-21kworker/0:207:45:430
262229955,0cyclictest15375-21kworker/0:207:40:390
262229955,0cyclictest15375-21kworker/0:207:40:390
262229955,0cyclictest15375-21kworker/0:207:30:370
262229955,0cyclictest15375-21kworker/0:207:25:510
262229955,0cyclictest15375-21kworker/0:207:20:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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