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2026-04-14 - 08:56
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rackcslot3.osadl.org (updated Tue Apr 14, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt19-21ksoftirqd/123:50:401
81800rcu_preempt19-21ksoftirqd/122:52:281
81770rcu_preempt0-21swapper/019:10:490
147650750irq/28-eth0-rx-0-21swapper/119:13:211
81740rcu_preempt579-21irqstats21:20:490
81720rcu_preempt29529-21diskmemload23:05:440
81720rcu_preempt10898-21ssh22:41:370
81710rcu_preempt20067-21ssh21:57:050
81710rcu_preempt0-21swapper/021:05:530
81710rcu_preempt0-21swapper/020:15:530
81700rcu_preempt0-21swapper/023:48:170
81700rcu_preempt0-21swapper/022:49:050
81700rcu_preempt0-21swapper/000:17:540
81680rcu_preempt0-21swapper/022:36:550
147950680irq/31-eth0-tx-181ktimersoftd/122:58:221
81670rcu_preempt709-21df_abs23:25:430
81670rcu_preempt29818-21ntp_states22:15:510
81670rcu_preempt15922-21munin-run23:55:280
89850660irq/17-ehci_hcd945-21usb-storage21:19:291
81660rcu_preempt0-21swapper/023:23:510
81660rcu_preempt0-21swapper/021:20:210
81660rcu_preempt0-21swapper/020:45:410
89850650irq/17-ehci_hcd945-21usb-storage00:41:231
81650rcu_preempt0-21swapper/000:27:020
81640rcu_preempt0-21swapper/022:20:290
81640rcu_preempt0-21swapper/019:55:510
81630rcu_preempt0-21swapper/023:20:270
81630rcu_preempt0-21swapper/022:15:080
81630rcu_preempt0-21swapper/021:35:550
89850620irq/17-ehci_hcd945-21usb-storage21:25:581
89850620irq/17-ehci_hcd945-21usb-storage20:08:430
81620rcu_preempt22197-21ssh23:04:461
81620rcu_preempt0-21swapper/123:56:531
81620rcu_preempt0-21swapper/123:34:521
81620rcu_preempt0-21swapper/120:35:531
81620rcu_preempt0-21swapper/021:41:260
81620rcu_preempt0-21swapper/019:20:480
81610rcu_preempt24611-21ssh23:09:111
81610rcu_preempt22556-21ssh22:01:401
81610rcu_preempt18963-21if_err_can000:00:450
81610rcu_preempt10077-21strings19:55:491
81610rcu_preempt0-21swapper/122:05:481
81610rcu_preempt0-21swapper/121:35:551
81610rcu_preempt0-21swapper/120:20:481
81610rcu_preempt0-21swapper/022:26:220
81610rcu_preempt0-21swapper/021:53:070
89850600irq/17-ehci_hcd945-21usb-storage19:18:020
81600rcu_preempt19782-21ssh00:01:031
81600rcu_preempt13648-21ssh22:47:041
81600rcu_preempt11741-21ssh23:45:541
81600rcu_preempt0-21swapper/121:33:531
81600rcu_preempt0-21swapper/121:20:541
81600rcu_preempt0-21swapper/119:50:451
81600rcu_preempt0-21swapper/100:37:121
81600rcu_preempt0-21swapper/100:20:511
81600rcu_preempt0-21swapper/023:00:420
81600rcu_preempt0-21swapper/021:31:150
81590rcu_preempt9595-21sshd23:41:261
81590rcu_preempt9534-21ssh22:40:411
81590rcu_preempt5846-21ssh00:37:200
81590rcu_preempt5438-21ssh23:35:040
81590rcu_preempt3912-21ssh00:34:491
81590rcu_preempt3694-21sshd22:28:251
81590rcu_preempt28959-21ssh23:16:001
81590rcu_preempt15329-21ssh21:49:091
81590rcu_preempt1354-21ssh00:30:021
81590rcu_preempt0-21swapper/123:22:471
81590rcu_preempt0-21swapper/122:18:091
81590rcu_preempt0-21swapper/122:12:131
81590rcu_preempt0-21swapper/121:58:521
81590rcu_preempt0-21swapper/121:10:481
81590rcu_preempt0-21swapper/120:50:471
81590rcu_preempt0-21swapper/120:30:541
81590rcu_preempt0-21swapper/120:05:461
81590rcu_preempt0-21swapper/023:42:060
81590rcu_preempt0-21swapper/023:39:110
81590rcu_preempt0-21swapper/020:30:430
81580rcu_preempt7077-21ssh23:36:351
81580rcu_preempt5985-21ssh22:32:091
81580rcu_preempt27720-21ssh00:17:211
81580rcu_preempt26818-21ssh23:12:461
81580rcu_preempt25788-21ssh00:13:361
81580rcu_preempt23455-21ssh22:05:160
81580rcu_preempt1575-21ssh22:25:171
81580rcu_preempt13036-21ssh21:45:021
81580rcu_preempt0-21swapper/123:26:541
81580rcu_preempt0-21swapper/119:42:071
81580rcu_preempt0-21swapper/119:25:481
81580rcu_preempt0-21swapper/100:05:461
81580rcu_preempt0-21swapper/022:58:360
81580rcu_preempt0-21swapper/022:31:530
81580rcu_preempt0-21swapper/021:46:070
81580rcu_preempt0-21swapper/019:45:510
81580rcu_preempt0-21swapper/019:27:250
81580rcu_preempt0-21swapper/000:41:210
81580rcu_preempt0-21swapper/000:10:550
81580rcu_preempt0-21swapper/000:06:220
81570rcu_preempt9290-21apt19:55:280
81570rcu_preempt9157-21ssh22:39:531
81570rcu_preempt5249-21ssh21:30:090
81570rcu_preempt0-21swapper/121:50:451
81570rcu_preempt0-21swapper/119:35:301
81570rcu_preempt0-21swapper/119:21:491
81570rcu_preempt0-21swapper/023:58:100
81570rcu_preempt0-21swapper/022:06:500
81570rcu_preempt0-21swapper/021:15:280
81570rcu_preempt0-21swapper/000:31:210
81560rcu_preempt21508-21ntp_states20:40:521
81560rcu_preempt0-21swapper/120:01:061
81560rcu_preempt0-21swapper/119:47:291
81560rcu_preempt0-21swapper/022:50:540
81560rcu_preempt0-21swapper/020:35:450
81550rcu_preempt6822-21grep19:45:290
81550rcu_preempt4919-21sed19:35:490
81550rcu_preempt14299-21users20:10:541
81550rcu_preempt13865-21grep20:10:490
81550rcu_preempt0-21swapper/023:12:560
81550rcu_preempt0-21swapper/020:26:250
81550rcu_preempt0-21swapper/019:34:430
89850540irq/17-ehci_hcd945-21usb-storage21:05:511
81540rcu_preempt30183-21ssh00:21:550
81540rcu_preempt0-21swapper/120:56:001
81540rcu_preempt0-21swapper/119:32:221
81540rcu_preempt0-21swapper/021:00:440
81540rcu_preempt0-21swapper/020:40:480
81530rcu_preempt17278-21fw_forwarded_lo20:25:451
81530rcu_preempt0-21swapper/120:47:161
81520rcu_preempt0-21swapper/021:00:130
81520rcu_preempt0-21swapper/020:04:320
81510rcu_preempt0-21swapper/121:01:031
81480rcu_preempt0-21swapper/020:52:250
31571994844cyclictest945-21usb-storage20:15:391
31571994643cyclictest945-21usb-storage19:15:401
89850350irq/17-ehci_hcd0-21swapper/020:24:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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