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2026-08-08 - 14:41
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sat Aug 08, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278224735,0sleep20-21swapper/207:25:142
290624029,0sleep00-21swapper/007:26:370
305223526,0sleep10-21swapper/107:28:181
293423525,0sleep30-21swapper/307:27:003
8305060,0irq/26-0000:00:14643-21turbostat.cron12:19:422
35160,0ktimersoftd/30-21swapper/312:57:063
339960,0migration/323684-21kthreadcore09:10:003
32529960,0cyclictest22479-21ssh09:32:531
32529960,0cyclictest0-21swapper/112:52:201
32519960,0cyclictest0-21swapper/012:39:560
329960,0watchdog/330043-21sh10:51:373
329960,0watchdog/324629-21ssh12:43:503
29805060,0irq/28-eth0-rx-3175-21diskstats11:34:573
29805060,0irq/28-eth0-rx-22172-21ssh10:48:333
29805060,0irq/28-eth0-rx-0-21swapper/310:24:143
149960,0migration/09586-21kthreadcore12:15:030
149960,0migration/05952-21sh12:30:050
149960,0migration/03749-21latency12:10:030
149960,0migration/021036-21munin-node12:20:040
149960,0migration/02088-21kthreadcore09:20:010
8305050,0irq/26-0000:00:23505-21fschecks_time10:49:572
8305050,0irq/26-0000:00:15952-21munin-run11:04:432
8305050,0irq/26-0000:00:0-21swapper/209:54:592
4150,0ktimersoftd/00-21swapper/011:12:550
339950,0migration/39682-21kthreadcore07:55:003
339950,0migration/37944-21taskset09:44:023
339950,0migration/36803-21runrttasks08:35:253
339950,0migration/330808-21kthreadcore07:45:003
339950,0migration/329532-21kthreadcore10:15:003
339950,0migration/32854-21kthreadcore09:20:013
339950,0migration/327694-21kthreadcore09:35:003
339950,0migration/322013-21munin-node10:29:583
339950,0migration/321039-21if_eth1.211:44:593
339950,0migration/320439-21mdstat08:45:013
339950,0migration/319468-21df_abs10:09:553
339950,0migration/318674-21fschecks_count11:24:573
339950,0migration/316764-21latency08:20:013
339950,0migration/315041-21kthreadcore07:35:013
339950,0migration/314607-21taskset09:29:213
32529955,0cyclictest0-21swapper/112:24:251
32529955,0cyclictest0-21swapper/110:38:001
32529955,0cyclictest0-21swapper/110:28:041
32529955,0cyclictest0-21swapper/110:04:441
32529950,0cyclictest0-21swapper/112:17:481
32529950,0cyclictest0-21swapper/108:10:171
32519950,0cyclictest0-21swapper/012:53:010
329950,0watchdog/37045-21ntp_kernel_pll_11:15:053
329950,0watchdog/35967-21sensors12:30:063
329950,0watchdog/332227-21cut11:30:013
329950,0watchdog/32316-21sh12:49:583
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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