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2026-03-20 - 14:15
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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 Fri Mar 20, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81900rcu_preempt10867-21ssh00:33:451
81840rcu_preempt3156-21/usr/sbin/munin23:14:441
89850810irq/17-ehci_hcd945-21usb-storage22:38:260
81800rcu_preempt17217-21ssh21:39:321
81780rcu_preempt19-21ksoftirqd/122:25:091
81780rcu_preempt0-21swapper/119:36:431
89850770irq/17-ehci_hcd12232-21python22:29:481
81740rcu_preempt0-21swapper/123:42:371
89450710irq/17-ehci_hcd0-21swapper/000:37:070
81710rcu_preempt13459-21ssh23:34:410
81710rcu_preempt0-21swapper/021:28:060
81710rcu_preempt0-21swapper/021:20:540
81710rcu_preempt0-21swapper/000:19:480
81700rcu_preempt0-21swapper/023:12:440
81700rcu_preempt0-21swapper/022:54:460
81700rcu_preempt0-21swapper/021:42:140
81700rcu_preempt0-21swapper/019:50:490
81690rcu_preempt0-21swapper/022:11:360
81670rcu_preempt15153-21sh00:40:010
81670rcu_preempt12041-21cpu19:39:330
147950660irq/31-eth0-tx-30957-21kworker/1:219:14:071
81650rcu_preempt8485-21ssh00:29:210
81650rcu_preempt28654-21k10sensors21:59:470
81650rcu_preempt0-21swapper/022:48:290
147950650irq/31-eth0-tx-945-21usb-storage22:23:040
81640rcu_preempt0-21swapper/022:50:210
81640rcu_preempt0-21swapper/021:54:210
81630rcu_preempt16271-21kworker/0:219:09:440
81630rcu_preempt0-21swapper/019:29:380
81630rcu_preempt0-21swapper/019:14:410
81620rcu_preempt27031-21ssh22:59:360
81620rcu_preempt0-21swapper/023:19:350
81620rcu_preempt0-21swapper/021:31:570
81610rcu_preempt29250-21ssh22:01:311
81610rcu_preempt24703-21ssh23:56:031
81610rcu_preempt0-21swapper/023:32:110
81610rcu_preempt0-21swapper/023:04:350
81600rcu_preempt5570-21ssh22:19:071
81600rcu_preempt20124-21ssh23:48:041
81600rcu_preempt19782-21ssh21:44:311
81600rcu_preempt0-21swapper/123:29:381
81600rcu_preempt0-21swapper/123:12:401
81600rcu_preempt0-21swapper/100:40:151
81600rcu_preempt0-21swapper/023:52:470
81600rcu_preempt0-21swapper/021:14:390
81600rcu_preempt0-21swapper/020:34:330
89850590irq/17-ehci_hcd945-21usb-storage20:19:381
81590rcu_preempt26405-21ssh21:55:231
81590rcu_preempt26292-21ssh22:58:151
81590rcu_preempt22233-21ssh23:51:181
81590rcu_preempt18726-21ssh22:44:171
81590rcu_preempt15965-21ssh22:38:571
81590rcu_preempt13432-21ssh21:31:181
81590rcu_preempt11651-21ssh21:29:201
81590rcu_preempt0-21swapper/123:24:451
81590rcu_preempt0-21swapper/123:01:071
81590rcu_preempt0-21swapper/122:09:461
81590rcu_preempt0-21swapper/121:50:281
81590rcu_preempt0-21swapper/119:26:001
81590rcu_preempt0-21swapper/100:34:471
81590rcu_preempt0-21swapper/100:21:161
81590rcu_preempt0-21swapper/100:07:361
81590rcu_preempt0-21swapper/022:30:280
81590rcu_preempt0-21swapper/021:48:150
81590rcu_preempt0-21swapper/019:24:330
81580rcu_preempt32384-21ssh00:10:010
81580rcu_preempt0-21swapper/123:34:421
81580rcu_preempt0-21swapper/122:44:221
81580rcu_preempt0-21swapper/122:19:341
81580rcu_preempt0-21swapper/121:14:401
81580rcu_preempt0-21swapper/120:44:451
81580rcu_preempt0-21swapper/120:24:221
81580rcu_preempt0-21swapper/119:42:211
81580rcu_preempt0-21swapper/100:13:131
81580rcu_preempt0-21swapper/023:59:300
81580rcu_preempt0-21swapper/023:43:310
81580rcu_preempt0-21swapper/022:06:040
81580rcu_preempt0-21swapper/021:55:190
81580rcu_preempt0-21swapper/020:54:400
81580rcu_preempt0-21swapper/020:09:220
81570rcu_preempt31067-21ssh23:06:211
81570rcu_preempt3-21ksoftirqd/022:41:050
81570rcu_preempt17323-21diskstats19:59:351
81570rcu_preempt0-21swapper/123:59:261
81570rcu_preempt0-21swapper/123:23:111
81570rcu_preempt0-21swapper/122:51:071
81570rcu_preempt0-21swapper/122:06:481
81570rcu_preempt0-21swapper/121:36:061
81570rcu_preempt0-21swapper/121:23:581
81570rcu_preempt0-21swapper/120:59:411
81570rcu_preempt0-21swapper/120:53:471
81570rcu_preempt0-21swapper/119:31:161
81570rcu_preempt0-21swapper/100:26:561
81570rcu_preempt0-21swapper/100:16:091
81570rcu_preempt0-21swapper/023:44:420
81570rcu_preempt0-21swapper/023:28:550
81570rcu_preempt0-21swapper/023:17:330
81570rcu_preempt0-21swapper/021:04:430
81570rcu_preempt0-21swapper/020:50:030
81570rcu_preempt0-21swapper/000:30:460
81570rcu_preempt0-21swapper/000:08:490
81560rcu_preempt9828-21ssh22:25:130
81560rcu_preempt24901-21ssh23:56:520
81560rcu_preempt0-21swapper/120:58:571
81560rcu_preempt0-21swapper/120:35:331
81560rcu_preempt0-21swapper/120:18:061
81560rcu_preempt0-21swapper/022:14:440
81560rcu_preempt0-21swapper/021:34:480
81560rcu_preempt0-21swapper/020:04:420
89850550irq/17-ehci_hcd945-21usb-storage19:14:351
81550rcu_preempt15131-21memory19:49:401
81550rcu_preempt0-21swapper/121:09:441
81550rcu_preempt0-21swapper/121:06:061
81550rcu_preempt0-21swapper/120:30:011
81550rcu_preempt0-21swapper/020:40:570
81550rcu_preempt0-21swapper/020:29:470
81550rcu_preempt0-21swapper/020:21:010
81550rcu_preempt0-21swapper/020:14:460
81550rcu_preempt0-21swapper/019:45:520
81550rcu_preempt0-21swapper/000:14:470
81540rcu_preempt18598-21diskstats20:04:371
81540rcu_preempt0-21swapper/119:21:351
81540rcu_preempt0-21swapper/020:59:410
81540rcu_preempt0-21swapper/020:46:560
89850530irq/17-ehci_hcd27021-21kworker/1:020:41:451
81530rcu_preempt0-21swapper/021:13:460
81520rcu_preempt8124-21grep19:24:210
81510rcu_preempt0-21swapper/019:35:540
5584995148cyclictest945-21usb-storage19:59:460
5585994946cyclictest945-21usb-storage20:09:421
81480rcu_preempt0-21swapper/020:27:160
81470rcu_preempt0-21swapper/119:46:061
81470rcu_preempt0-21swapper/019:55:550
5585994743cyclictest15669-21kworker/1:119:54:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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