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2026-01-12 - 04:36
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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 Mon Jan 12, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt20886-21ssh22:31:321
81740rcu_preempt22659-21wc23:31:451
81730rcu_preempt29716-21/usr/sbin/munin23:46:191
81720rcu_preempt32145-21cpu20:36:331
81720rcu_preempt21089-21switchtime21:31:441
81720rcu_preempt0-21swapper/119:06:451
89450710irq/17-ehci_hcd0-21swapper/121:25:491
81710rcu_preempt20079-21ntpq19:46:391
81700rcu_preempt0-21swapper/122:26:371
81700rcu_preempt0-21swapper/121:38:451
81700rcu_preempt0-21swapper/100:20:341
81690rcu_preempt0-21swapper/120:31:191
81690rcu_preempt0-21swapper/019:06:400
81680rcu_preempt0-21swapper/121:16:361
81680rcu_preempt0-21swapper/100:05:111
81670rcu_preempt12482-21sh00:13:421
81670rcu_preempt0-21swapper/123:38:421
10377996726cyclictest94550usb-storage22:46:011
81660rcu_preempt0-21swapper/122:23:261
81660rcu_preempt0-21swapper/100:26:071
81650rcu_preempt0-21swapper/123:16:041
81650rcu_preempt0-21swapper/119:22:361
81650rcu_preempt0-21swapper/022:35:040
81640rcu_preempt11393-21cron21:16:191
81640rcu_preempt0-21swapper/100:28:441
81640rcu_preempt0-21swapper/022:43:430
81640rcu_preempt0-21swapper/021:11:270
81630rcu_preempt25535-21ssh22:39:190
81630rcu_preempt22934-21ssh23:32:250
81630rcu_preempt18132-21cpu19:41:301
81630rcu_preempt0-21swapper/022:26:060
147650630irq/28-eth0-rx-41ktimersoftd/023:55:290
81620rcu_preempt4463-21ssh22:01:301
81620rcu_preempt4389-21ssh23:57:570
81620rcu_preempt3796-21ssh22:57:450
81620rcu_preempt31803-21ssh22:51:141
81620rcu_preempt18236-21ssh23:25:240
81620rcu_preempt15693-21ssh00:19:510
81620rcu_preempt0-21swapper/023:45:220
81620rcu_preempt0-21swapper/022:13:410
81620rcu_preempt0-21swapper/022:06:140
81620rcu_preempt0-21swapper/021:41:100
81620rcu_preempt0-21swapper/000:25:310
81620rcu_preempt0-21swapper/000:15:210
89450610irq/17-ehci_hcd31737-21/usr/sbin/munin21:51:350
81610rcu_preempt3748-21ssh21:59:470
81610rcu_preempt20939-21ssh00:29:010
81610rcu_preempt17924-21tr21:26:401
81610rcu_preempt0-21swapper/021:46:540
81610rcu_preempt0-21swapper/000:06:390
81600rcu_preempt7660-21ssh00:04:300
81600rcu_preempt27566-21ssh21:44:020
81600rcu_preempt0-21swapper/023:11:390
81600rcu_preempt0-21swapper/022:52:430
81600rcu_preempt0-21swapper/021:30:530
81590rcu_preempt30925-21ssh22:48:180
81590rcu_preempt0-21swapper/122:14:091
81590rcu_preempt0-21swapper/021:34:500
81590rcu_preempt0-21swapper/021:21:040
81590rcu_preempt0-21swapper/020:01:350
81590rcu_preempt0-21swapper/000:35:020
81580rcu_preempt9210-21ssh22:09:430
81580rcu_preempt6509-21ssh23:02:260
81580rcu_preempt16101-21ssh21:23:130
81580rcu_preempt0-21swapper/022:28:140
81580rcu_preempt0-21swapper/020:41:340
81580rcu_preempt0-21swapper/020:38:040
81570rcu_preempt9234-21ssh23:07:420
81570rcu_preempt31262-21ssh23:47:260
81570rcu_preempt20254-21ssh23:27:540
81570rcu_preempt15506-21ssh23:20:160
81570rcu_preempt0-21swapper/019:39:030
81570rcu_preempt0-21swapper/019:16:530
81570rcu_preempt0-21swapper/000:40:480
81560rcu_preempt31935-21sshd20:33:030
81560rcu_preempt0-21swapper/023:40:030
81560rcu_preempt0-21swapper/022:17:430
81560rcu_preempt0-21swapper/021:02:510
81560rcu_preempt0-21swapper/020:51:340
81560rcu_preempt0-21swapper/019:29:390
81550rcu_preempt26874-21sshd20:15:040
81550rcu_preempt0-21swapper/020:06:340
81550rcu_preempt0-21swapper/019:21:260
81540rcu_preempt0-21swapper/019:34:090
81530rcu_preempt0-21swapper/019:44:030
81520rcu_preempt29395-21users20:21:440
10377995248cyclictest945-21usb-storage19:33:061
10377995241cyclictest181ktimersoftd/123:23:161
81510rcu_preempt0-21swapper/021:07:030
10377995148cyclictest181ktimersoftd/121:06:331
81500rcu_preempt19627-21diskstats19:46:320
10377995047cyclictest181ktimersoftd/123:47:331
10377994946cyclictest181ktimersoftd/123:26:391
10377994946cyclictest181ktimersoftd/100:37:161
89850480irq/17-ehci_hcd0-21swapper/019:56:190
10377994845cyclictest181ktimersoftd/122:39:431
10376994846cyclictest945-21usb-storage20:29:030
10376994845cyclictest945-21usb-storage19:11:360
10377994744cyclictest181ktimersoftd/123:16:381
10377994744cyclictest181ktimersoftd/100:35:591
10376994745cyclictest945-21usb-storage20:58:240
89850460irq/17-ehci_hcd0-21swapper/122:16:321
81460rcu_preempt0-21swapper/119:20:381
10377994641cyclictest945-21usb-storage20:21:381
10377994636cyclictest181ktimersoftd/122:09:421
10376994644cyclictest945-21usb-storage20:16:390
10376994644cyclictest945-21usb-storage20:01:030
89850450irq/17-ehci_hcd0-21swapper/121:57:411
81450rcu_preempt9519-21kworker/1:100:06:391
81450rcu_preempt19-21ksoftirqd/123:55:161
10377994542cyclictest0-21swapper/122:51:331
10376994543cyclictest945-21usb-storage20:47:530
10377994340cyclictest181ktimersoftd/121:53:201
10377994239cyclictest181ktimersoftd/123:06:331
10377994239cyclictest181ktimersoftd/121:46:441
10377994239cyclictest181ktimersoftd/120:16:391
10377994239cyclictest181ktimersoftd/120:05:191
10377994037cyclictest812-21scsi_eh_019:51:441
147950390irq/31-eth0-tx-0-21swapper/120:51:331
147850390irq/30-eth0-tx-1702-21ntp_states20:41:431
10377993937cyclictest181ktimersoftd/119:11:371
147650380irq/28-eth0-rx-2481-21df_abs22:56:311
10377993835cyclictest181ktimersoftd/121:42:051
10377993835cyclictest181ktimersoftd/119:36:191
89850370irq/17-ehci_hcd29904-21if_can120:26:371
89850370irq/17-ehci_hcd0-21swapper/120:14:041
10377993726cyclictest181ktimersoftd/123:02:111
89850360irq/17-ehci_hcd945-21usb-storage23:59:291
89850360irq/17-ehci_hcd7199-21munin-run21:06:191
147950360irq/31-eth0-tx-25550-21kworker/1:020:56:311
10377993532cyclictest812-21scsi_eh_019:56:441
147950340irq/31-eth0-tx-0-21swapper/120:09:371
147950340irq/31-eth0-tx-0-21swapper/119:26:331
10377993431cyclictest181ktimersoftd/120:46:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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