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2026-08-20 - 11:13
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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 Thu Aug 20, 2026 00:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73504450,0irq/45-4a10000011772-21kworker/0:419:04:550
247862889,0sleep024811-21fw_conntrack19:34:580
15126998759,0cyclictest0-21swapper20:58:160
7450860,0irq/46-4a100000454-21snmpd00:00:500
7450860,0irq/46-4a10000015678-21sendmail-msp22:22:360
7450850,0irq/46-4a10000029938-1kworker/u3:121:35:120
7450850,0irq/46-4a10000019072-21kworker/u2:121:01:190
7450840,0irq/46-4a10000029938-1kworker/u3:121:25:180
15126998457,0cyclictest0-21swapper21:49:060
15126998455,0cyclictest0-21swapper20:26:460
7450830,0irq/46-4a1000007086-21kworker/u2:122:01:230
7450830,0irq/46-4a1000001708-21seq23:12:370
52722838,0sleep05274-21sendmail23:23:480
7450820,0irq/46-4a10000027249-1kworker/u3:019:44:480
7450820,0irq/46-4a10000011138-1kworker/u3:122:10:260
7350820,0irq/45-4a10000013991-21sendmail-msp20:42:570
2587228211,0sleep025891-21munin-run22:49:300
15126998254,0cyclictest0-21swapper22:08:260
15126998253,0cyclictest0-21swapper23:35:440
7450810,0irq/46-4a100000454-21snmpd19:31:110
7450810,0irq/46-4a10000025971-21sendmail-msp19:43:340
7450810,0irq/46-4a10000019074-21kworker/u2:221:21:120
7450800,0irq/46-4a1000003701-1kworker/u3:123:44:520
7450800,0irq/46-4a10000026708-21ntpq00:25:190
7450800,0irq/46-4a10000020749-21kworker/u2:122:41:170
7450800,0irq/46-4a10000014875-21find22:15:220
7450800,0irq/46-4a10000010517-21sendmail-msp23:40:070
7450790,0irq/46-4a10000035842chrt23:18:570
7450790,0irq/46-4a100000326-21sendmail-msp20:02:510
7450790,0irq/46-4a10000021072-21aten_r4power_vo19:24:430
7450790,0irq/46-4a1000002012-21sendmail-msp21:40:480
7450790,0irq/46-4a10000014850-21find23:50:230
7450790,0irq/46-4a10000012-21ksoftirqd/020:11:260
7450790,0irq/46-4a10000010187-1kworker/u3:220:35:070
7450780,0irq/46-4a100000454-21snmpd19:16:040
7450780,0irq/46-4a10000031016-21sendmail-msp00:39:370
7450780,0irq/46-4a100000271482sleep021:15:430
7450780,0irq/46-4a10000024191-21sendmail-msp00:21:300
7350780,0irq/45-4a1000000-21swapper21:11:520
185662788,0sleep018577-21/usr/sbin/munin22:25:320
7450770,0irq/46-4a1000007269-1kworker/u3:020:31:090
7450770,0irq/46-4a1000007166-21sendmail-msp20:21:350
7450770,0irq/46-4a1000006348-21find21:50:240
7450770,0irq/46-4a100000291472sleep022:58:260
7450770,0irq/46-4a100000158082chrt20:44:360
15126997754,0cyclictest0-21swapper00:04:480
7450760,0irq/46-4a10000029938-1kworker/u3:121:30:210
7450760,0irq/46-4a10000028391-1kworker/u3:100:30:260
7450760,0irq/46-4a10000011138-1kworker/u3:122:39:330
7350760,0irq/45-4a10000031139-21/usr/sbin/munin23:04:380
7350760,0irq/45-4a10000027494-21chrt22:53:530
7350760,0irq/45-4a1000000-21swapper21:54:390
7450750,0irq/46-4a1000006505-21/usr/sbin/munin20:15:300
7450750,0irq/46-4a10000019143-21sendmail-msp19:22:580
7450750,0irq/46-4a10000015989-21/usr/sbin/munin19:10:210
7350750,0irq/45-4a10000015124-21cyclictest22:59:370
7350750,0irq/45-4a1000000-21swapper23:27:460
7350750,0irq/45-4a1000000-21swapper21:06:490
1811727510,0sleep018118-21memory20:50:110
7450740,0irq/46-4a10000027249-1kworker/u3:019:51:190
7350740,0irq/45-4a10000022985-21fschecks_time00:14:550
7450730,0irq/46-4a100000329-1kworker/u3:020:05:240
7450730,0irq/46-4a10000015267-1kworker/u3:123:55:330
325602730,0chrt30701-1kworker/u3:219:57:570
7450720,0irq/46-4a10000015683-1kworker/u3:022:29:550
15126997251,0cyclictest0-21swapper23:29:570
7350710,0irq/45-4a10000021688-21find00:10:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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