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2026-08-08 - 19:52
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 792 highest latencies:
System rack4slot2.osadl.org (updated Sat Aug 08, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26603229185,0sleep019057-21kworker/0:007:05:230
27764999258,0cyclictest0-21swapper11:55:550
27764999256,0cyclictest0-21swapper07:55:220
27764999159,0cyclictest0-21swapper08:35:480
27764999156,0cyclictest0-21swapper07:25:360
27764999155,0cyclictest0-21swapper07:15:540
677129018,0sleep06258-1kworker/u3:212:25:330
27764999058,0cyclictest0-21swapper11:30:230
27764999056,0cyclictest0-21swapper11:25:510
27764998957,0cyclictest0-21swapper08:55:570
27764998956,0cyclictest0-21swapper12:10:540
7350880,0irq/45-4a10000026624-21munin-run10:14:580
325832889,0sleep032589-21ntp_states12:05:460
27764998866,0cyclictest0-21swapper11:50:550
27764998857,0cyclictest0-21swapper08:10:560
27764998856,0cyclictest0-21swapper08:50:530
27764998856,0cyclictest0-21swapper08:05:310
27764998855,0cyclictest0-21swapper12:30:260
27764998855,0cyclictest0-21swapper08:30:480
27764998754,0cyclictest0-21swapper08:46:000
219262877,0sleep021929-21df_inode11:35:190
7350860,0irq/45-4a10000010005-21forks09:25:200
27764998657,0cyclictest0-21swapper11:15:440
27764998655,0cyclictest0-21swapper08:25:490
27764998654,0cyclictest0-21swapper10:45:560
27764998654,0cyclictest0-21swapper07:50:590
27764998654,0cyclictest0-21swapper07:10:340
27764998648,0cyclictest0-21swapper10:35:380
7350850,0irq/45-4a10000032737-21/usr/sbin/munin07:21:010
7350850,0irq/45-4a1000001031-21sendmail-msp09:00:350
27764998562,0cyclictest0-21swapper10:05:500
27764998554,0cyclictest0-21swapper07:45:420
27764998552,0cyclictest0-21swapper07:30:390
7450840,0irq/46-4a10000012984-21sendmail-msp08:00:090
7350840,0irq/45-4a1000004839-21df12:20:220
7350840,0irq/45-4a10000023967-21memory11:40:500
7350840,0irq/45-4a10000019824-21sendmail-msp08:20:330
7350840,0irq/45-4a10000012075-21ntpq09:30:450
27764998451,0cyclictest0-21swapper12:15:430
7450830,0irq/46-4a10000032405-21sshd10:30:340
7350830,0irq/45-4a10000027655-21run-parts08:41:040
7350830,0irq/45-4a10000010385-21ntp_offset11:00:570
27764998351,0cyclictest0-21swapper11:10:450
27764998351,0cyclictest0-21swapper09:45:350
27764998350,0cyclictest0-21swapper12:35:230
7450820,0irq/46-4a1000002736-21sendmail-msp10:40:340
7450820,0irq/46-4a10000021527-21sendmail-msp10:00:110
7350820,0irq/45-4a1000007850-21munin-run09:20:010
7350820,0irq/45-4a1000006109-1kworker/u3:007:39:580
27764998249,0cyclictest0-21swapper09:55:210
7450810,0irq/46-4a10000030070-21sendmail-msp12:00:560
7350810,0irq/45-4a10000028669-21cstates10:20:170
7350810,0irq/45-4a10000016507-21latency_hist11:20:060
40942810,0sleep026227-1kworker/u3:209:07:190
27764998149,0cyclictest0-21swapper09:35:220
257502817,0sleep025756-21ntpq11:45:460
7450800,0irq/46-4a1000009095-21runrttasks10:56:220
7450800,0irq/46-4a1000007869-21sendmail-msp09:20:250
7450800,0irq/46-4a1000002453-1kworker/u3:009:40:590
7350800,0irq/45-4a10000018519-1kworker/u3:009:51:340
7350800,0irq/45-4a10000018376-21runrttasks08:15:130
7450790,0irq/46-4a1000007273-21grep10:50:570
7450790,0irq/46-4a1000004842-21df_inode09:10:180
7450790,0irq/46-4a10000028334-21cron10:19:570
7350790,0irq/45-4a1000007241-21awk07:41:070
7350790,0irq/45-4a10000031759-21modprobe10:29:570
27764997948,0cyclictest0-21swapper11:05:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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