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2026-04-02 - 11:26
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Thu Apr 02, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81870rcu_preempt19-21ksoftirqd/123:09:481
81760rcu_preempt977-21apt22:39:561
81760rcu_preempt977-21apt22:39:561
81760rcu_preempt4317-21munin-run20:09:561
81760rcu_preempt3045-21munin-run20:04:561
81760rcu_preempt0-21swapper/021:40:200
81740rcu_preempt9990-21cut22:55:210
81740rcu_preempt1307-21ntp_kernel_err19:55:191
89850730irq/17-ehci_hcd31478-21ssh21:34:431
81720rcu_preempt32325-21latency19:50:161
81720rcu_preempt32325-21latency19:50:161
81720rcu_preempt27914-21latency_hist19:34:561
81720rcu_preempt0-21swapper/022:40:100
81710rcu_preempt25963-21sh21:23:581
81710rcu_preempt0-21swapper/000:30:200
81700rcu_preempt22439-21mailstats19:10:191
81700rcu_preempt16469-21ssh22:06:010
81700rcu_preempt0-21swapper/121:45:321
81700rcu_preempt0-21swapper/100:20:221
81700rcu_preempt0-21swapper/023:10:330
81700rcu_preempt0-21swapper/019:40:150
89850690irq/17-ehci_hcd20715-21diskmemload00:39:471
81690rcu_preempt28755-21ssh23:31:470
81690rcu_preempt0-21swapper/119:39:561
81690rcu_preempt0-21swapper/023:02:400
81690rcu_preempt0-21swapper/020:00:140
81680rcu_preempt3289-21ssh21:40:221
81680rcu_preempt28777-21diskmemload21:29:440
81680rcu_preempt12555-21ssh00:03:531
81680rcu_preempt0-21swapper/123:50:261
81680rcu_preempt0-21swapper/122:59:221
81680rcu_preempt0-21swapper/100:15:051
81680rcu_preempt0-21swapper/023:29:360
81680rcu_preempt0-21swapper/020:50:200
81670rcu_preempt0-21swapper/120:20:171
81670rcu_preempt0-21swapper/100:09:101
81670rcu_preempt0-21swapper/021:46:230
81670rcu_preempt0-21swapper/000:16:090
81660rcu_preempt13623-21latency00:05:160
81660rcu_preempt0-21swapper/123:17:421
81660rcu_preempt0-21swapper/120:35:351
89850650irq/17-ehci_hcd26671-21apt-get19:30:071
81650rcu_preempt6828-21ls20:19:561
81650rcu_preempt0-21swapper/123:03:061
81650rcu_preempt0-21swapper/122:54:281
81650rcu_preempt0-21swapper/122:25:101
81650rcu_preempt0-21swapper/122:00:051
81650rcu_preempt0-21swapper/119:45:201
81650rcu_preempt0-21swapper/023:45:460
81650rcu_preempt0-21swapper/021:24:070
81640rcu_preempt23135-21cpu22:20:101
81640rcu_preempt15579-21if_eth022:05:141
81640rcu_preempt0-21swapper/123:38:261
81640rcu_preempt0-21swapper/122:46:061
81640rcu_preempt0-21swapper/100:25:201
81640rcu_preempt0-21swapper/022:34:490
81640rcu_preempt0-21swapper/022:15:210
81630rcu_preempt21210-21fw_forwarded_lo21:15:130
81630rcu_preempt20715-21diskmemload22:12:340
81630rcu_preempt0-21swapper/100:42:481
81630rcu_preempt0-21swapper/022:50:110
81630rcu_preempt0-21swapper/022:29:560
81630rcu_preempt0-21swapper/022:20:220
81630rcu_preempt0-21swapper/000:19:570
81620rcu_preempt7571-21ssh21:50:111
81620rcu_preempt32473-21ssh23:40:041
81620rcu_preempt31333-21ps19:45:190
81620rcu_preempt28679-21/usr/sbin/munin22:30:121
81620rcu_preempt26035-21ssh23:26:161
81620rcu_preempt26026-21ssh00:31:111
81620rcu_preempt16575-21ps20:55:181
81620rcu_preempt0-21swapper/023:19:560
81620rcu_preempt0-21swapper/021:50:150
81620rcu_preempt0-21swapper/020:40:110
81620rcu_preempt0-21swapper/020:15:130
81620rcu_preempt0-21swapper/020:12:030
81620rcu_preempt0-21swapper/000:27:060
81610rcu_preempt4802-21ssh23:48:471
81610rcu_preempt29677-21ssh23:34:451
81610rcu_preempt22365-21ssh21:16:191
81610rcu_preempt19-21ksoftirqd/123:10:261
81610rcu_preempt0-21swapper/122:43:541
81610rcu_preempt0-21swapper/022:00:200
81610rcu_preempt0-21swapper/019:14:150
81600rcu_preempt557-21ssh21:35:461
81600rcu_preempt12240-21ssh21:59:061
81600rcu_preempt0-21swapper/122:15:231
81600rcu_preempt0-21swapper/121:28:131
81600rcu_preempt0-21swapper/023:05:180
81600rcu_preempt0-21swapper/020:27:060
81600rcu_preempt0-21swapper/019:30:180
81590rcu_preempt9190-21ssh23:55:551
81590rcu_preempt30259-21ssh21:30:290
81590rcu_preempt23267-21ssh23:20:291
81590rcu_preempt19425-21ssh22:11:561
81590rcu_preempt15685-21sh00:10:091
81590rcu_preempt0-21swapper/023:40:140
81590rcu_preempt0-21swapper/023:35:000
81590rcu_preempt0-21swapper/023:20:130
81590rcu_preempt0-21swapper/000:10:370
81580rcu_preempt3-21ksoftirqd/000:42:420
81580rcu_preempt24620-21irqstats19:20:141
81580rcu_preempt10030-21ssh21:55:060
81580rcu_preempt0-21swapper/120:48:021
81580rcu_preempt0-21swapper/023:51:200
81570rcu_preempt779-21ssh21:36:310
81570rcu_preempt0-21swapper/121:08:221
81570rcu_preempt0-21swapper/120:50:271
81570rcu_preempt0-21swapper/022:47:580
81570rcu_preempt0-21swapper/020:35:100
81570rcu_preempt0-21swapper/000:02:070
81560rcu_preempt12005-21/usr/sbin/munin20:40:141
81560rcu_preempt0-21swapper/120:10:391
81560rcu_preempt0-21swapper/119:24:591
81560rcu_preempt0-21swapper/119:15:051
81560rcu_preempt0-21swapper/020:30:190
81560rcu_preempt0-21swapper/020:05:180
81550rcu_preempt9748-21entropy20:30:111
81550rcu_preempt0-21swapper/021:09:560
81550rcu_preempt0-21swapper/021:01:520
81540rcu_preempt29164-21ssh00:38:360
81540rcu_preempt19566-21wc21:09:561
81540rcu_preempt0-21swapper/022:35:060
81540rcu_preempt0-21swapper/022:35:060
81540rcu_preempt0-21swapper/020:56:000
81540rcu_preempt0-21swapper/020:47:110
81540rcu_preempt0-21swapper/020:20:290
81540rcu_preempt0-21swapper/019:51:200
81540rcu_preempt0-21swapper/019:51:200
81530rcu_preempt9969-21ssh23:58:470
81530rcu_preempt17958-21mailstats21:00:211
81530rcu_preempt0-21swapper/019:24:010
81520rcu_preempt0-21swapper/120:27:171
81520rcu_preempt0-21swapper/021:14:230
22748995248cyclictest945-21usb-storage19:55:210
81510rcu_preempt0-21swapper/019:35:090
81510rcu_preempt0-21swapper/019:18:480
22748994643cyclictest945-21usb-storage19:24:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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