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2026-07-07 - 02:54
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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 Tue Jul 07, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271730,0ktimersoftd/2780-21perf19:26:512
784824938,0sleep00-21swapper/019:24:510
766724435,0sleep10-21swapper/119:22:441
790423929,0sleep30-21swapper/319:25:343
80999977,0cyclictest24650-21sensors22:07:242
80999960,0cyclictest0-21swapper/221:02:172
80969960,0cyclictest0-21swapper/121:27:211
80949965,0cyclictest14682-21munin-run23:57:030
80949960,0cyclictest0-21swapper/023:49:130
80949960,0cyclictest0-21swapper/023:35:200
339960,0migration/39616-21sh00:28:563
339960,0migration/34264-21sh19:47:223
339960,0migration/331724-21sh21:53:333
339960,0migration/329936-21munin-node19:42:303
339960,0migration/326749-21ntp_offset22:27:203
339960,0migration/322565-21sh22:46:393
339960,0migration/319040-21sh22:23:223
339960,0migration/314299-21sh00:54:563
329960,0watchdog/35498-21fschecks_time00:47:183
329960,0watchdog/320977-21tr21:07:213
29805060,0irq/28-eth0-rx-30088-21cut23:07:203
29805060,0irq/28-eth0-rx-21290-21python23:57:263
27160,0ktimersoftd/20-21swapper/200:22:212
259960,0migration/27818-21sh00:10:462
149960,0migration/030328-21latency_hist21:37:020
80999954,0cyclictest3524-21snmpd22:38:242
80999954,0cyclictest2989-21awk20:12:182
80969950,0cyclictest0-21swapper/121:46:261
80949955,0cyclictest0-21swapper/022:54:120
80949950,0cyclictest0-21swapper/023:04:450
80949950,0cyclictest0-21swapper/022:34:010
80949950,0cyclictest0-21swapper/022:01:320
4150,0ktimersoftd/00-21swapper/022:29:550
4150,0ktimersoftd/00-21swapper/000:40:370
4150,0ktimersoftd/00-21swapper/000:40:370
339950,0migration/39063-21aten2.4-expect19:32:123
339950,0migration/38367-21taskset19:27:473
339950,0migration/33732-21kthreadcore23:12:253
339950,0migration/332752-21munin-node22:52:173
339950,0migration/330958-21kthreadcore22:12:223
339950,0migration/327844-21fschecks_time20:07:153
339950,0migration/32733-21kthreadcore20:32:233
339950,0migration/325920-21latency20:47:203
339950,0migration/324971-21irqcore00:02:193
339950,0migration/322805-21kthreadcore22:07:203
339950,0migration/322645-21needreboot23:02:223
339950,0migration/321974-21kthreadcore20:02:173
339950,0migration/318392-21kthreadcore19:57:203
339950,0migration/318315-21idleruntime00:17:173
339950,0migration/315050-21switchtime00:12:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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