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2026-05-08 - 15:07
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Fri May 08, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950890irq/17-ehci_hcd945-21usb-storage09:34:430
81720rcu_preempt21043-21ssh12:06:030
146650710irq/31-eth0-tx-0-21swapper/011:44:140
81700rcu_preempt0-21swapper/010:50:120
81700rcu_preempt0-21swapper/009:43:560
81700rcu_preempt0-21swapper/007:31:080
81690rcu_preempt0-21swapper/111:06:031
81690rcu_preempt0-21swapper/012:14:500
81680rcu_preempt7923-21sh09:49:401
81680rcu_preempt27191-21sh10:21:560
81680rcu_preempt19242-21awk07:06:041
81680rcu_preempt0-21swapper/110:31:201
81680rcu_preempt0-21swapper/109:58:591
81670rcu_preempt0-21swapper/111:23:341
81670rcu_preempt0-21swapper/108:35:101
81670rcu_preempt0-21swapper/011:49:580
89950660irq/17-ehci_hcd0-21swapper/109:27:171
81660rcu_preempt8455-21ssh10:46:071
81660rcu_preempt4235-21ssh09:42:491
81660rcu_preempt4181-21sh10:39:250
81660rcu_preempt3722-21munin-run08:15:441
81660rcu_preempt20522-21ntp_kernel_pll_07:11:041
81660rcu_preempt18896-21sh11:05:451
81660rcu_preempt0-21swapper/112:32:421
81660rcu_preempt0-21swapper/010:13:580
81660rcu_preempt0-21swapper/010:04:260
81660rcu_preempt0-21swapper/009:49:590
81650rcu_preempt26426-21if_can007:36:011
81650rcu_preempt25603-1kworker/0:2H09:19:440
81650rcu_preempt21387-21if_can007:16:001
81650rcu_preempt17657-21munin-run09:10:440
81650rcu_preempt0-21swapper/112:40:311
81650rcu_preempt0-21swapper/107:56:011
81650rcu_preempt0-21swapper/012:21:570
81650rcu_preempt0-21swapper/012:21:570
81640rcu_preempt31522-21ssh12:24:321
81640rcu_preempt31522-21ssh12:24:321
81640rcu_preempt18753-21ssh09:11:080
81640rcu_preempt0-21swapper/009:59:530
89950630irq/17-ehci_hcd945-21usb-storage11:57:471
81630rcu_preempt9010-21ssh11:44:531
81630rcu_preempt7982-21idleruntime08:31:000
81630rcu_preempt2243-21sensors_temp08:06:090
81630rcu_preempt19273-21ntp_states07:06:060
81630rcu_preempt0-21swapper/109:30:551
81630rcu_preempt0-21swapper/107:40:441
81630rcu_preempt0-21swapper/012:31:030
81630rcu_preempt0-21swapper/011:56:080
81630rcu_preempt0-21swapper/011:32:290
81630rcu_preempt0-21swapper/011:05:180
81630rcu_preempt0-21swapper/010:32:270
81620rcu_preempt4409-21needreboot11:36:060
81620rcu_preempt2941-21ssh11:33:581
81620rcu_preempt2265-21ssh12:30:181
81620rcu_preempt14473-21ssh11:54:191
81620rcu_preempt0-21swapper/111:46:211
81620rcu_preempt0-21swapper/111:26:221
81620rcu_preempt0-21swapper/109:50:581
81620rcu_preempt0-21swapper/107:46:041
81620rcu_preempt0-21swapper/011:13:190
81620rcu_preempt0-21swapper/010:08:580
146250620irq/28-eth0-rx-0-21swapper/011:17:070
81610rcu_preempt0-21swapper/112:20:251
81610rcu_preempt0-21swapper/111:17:081
81610rcu_preempt0-21swapper/108:51:021
81610rcu_preempt0-21swapper/108:36:061
81610rcu_preempt0-21swapper/010:16:380
81600rcu_preempt24363-21ssh10:17:151
81600rcu_preempt22325-21ssh12:07:361
81600rcu_preempt22273-21ssh09:16:581
81600rcu_preempt15074-21ssh10:57:360
81600rcu_preempt15074-21ssh10:57:360
81600rcu_preempt0-21swapper/112:03:061
81600rcu_preempt0-21swapper/111:10:581
81600rcu_preempt0-21swapper/110:26:441
81600rcu_preempt0-21swapper/110:21:161
81600rcu_preempt0-21swapper/009:51:410
81590rcu_preempt29912-21ssh10:26:360
81590rcu_preempt0-21swapper/110:36:061
81590rcu_preempt0-21swapper/110:15:131
81590rcu_preempt0-21swapper/109:36:311
81590rcu_preempt0-21swapper/107:21:031
81590rcu_preempt0-21swapper/012:35:550
81590rcu_preempt0-21swapper/011:54:580
81590rcu_preempt0-21swapper/011:20:560
81590rcu_preempt0-21swapper/009:38:400
81590rcu_preempt0-21swapper/009:21:150
81580rcu_preempt32143-21ssh11:27:570
81580rcu_preempt20620-21ssh11:07:140
81580rcu_preempt19374-21ssh10:09:291
81580rcu_preempt19152-21ssh12:01:230
81580rcu_preempt12796-21ssh10:54:141
81580rcu_preempt12206-21ssh10:52:310
81580rcu_preempt0-21swapper/112:12:001
81580rcu_preempt0-21swapper/110:56:051
81580rcu_preempt0-21swapper/110:56:051
81580rcu_preempt0-21swapper/109:21:101
81580rcu_preempt0-21swapper/009:26:430
81580rcu_preempt0-21swapper/007:23:380
81570rcu_preempt3884-21df11:35:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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