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2025-12-07 - 00:36
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Sat Dec 06, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt1649-21apt-get07:04:561
81720rcu_preempt29557-21needreboot10:55:071
81710rcu_preempt0-21swapper/108:44:591
81700rcu_preempt0-21swapper/109:19:261
81690rcu_preempt7246-21ssh12:13:271
81690rcu_preempt0-21swapper/012:08:120
81690rcu_preempt0-21swapper/010:30:310
81690rcu_preempt0-21swapper/009:35:100
81690rcu_preempt0-21swapper/008:15:010
81680rcu_preempt23282-21diskmemload11:42:250
81680rcu_preempt0-21swapper/011:21:150
81670rcu_preempt16707-21apt08:04:430
81670rcu_preempt13255-21wc11:24:431
81670rcu_preempt0-21swapper/110:28:471
81670rcu_preempt0-21swapper/109:51:421
81660rcu_preempt2726-21df_inode12:04:591
81660rcu_preempt0-21swapper/108:00:071
81660rcu_preempt0-21swapper/007:05:040
90050650irq/17-ehci_hcd946-21usb-storage11:30:050
81650rcu_preempt31856-21munin-run09:04:421
81650rcu_preempt26588-21memory10:50:050
81650rcu_preempt0-21swapper/012:26:430
89250640irq/17-ehci_hcd0-21swapper/111:15:181
81640rcu_preempt22502-21switchtime11:40:091
81640rcu_preempt0-21swapper/011:59:560
81640rcu_preempt0-21swapper/010:45:190
81640rcu_preempt0-21swapper/010:18:410
81640rcu_preempt0-21swapper/009:28:300
81630rcu_preempt7834-21vmstat07:25:090
81620rcu_preempt2235-21snmpd08:15:041
81620rcu_preempt0-21swapper/110:04:201
81620rcu_preempt0-21swapper/011:05:090
81620rcu_preempt0-21swapper/007:45:030
81610rcu_preempt20992-21munin-run09:44:430
81610rcu_preempt0-21swapper/011:03:460
81610rcu_preempt0-21swapper/007:55:100
81600rcu_preempt19-21ksoftirqd/108:39:431
81590rcu_preempt7468-21ssh09:20:020
81590rcu_preempt26854-21/usr/sbin/munin11:49:570
81590rcu_preempt0-21swapper/012:22:370
81590rcu_preempt0-21swapper/011:15:090
81590rcu_preempt0-21swapper/010:44:430
81590rcu_preempt0-21swapper/010:27:550
81590rcu_preempt0-21swapper/007:20:000
81580rcu_preempt0-21swapper/011:38:160
81580rcu_preempt0-21swapper/011:25:520
81580rcu_preempt0-21swapper/009:31:360
90050570irq/17-ehci_hcd0-21swapper/111:30:051
81570rcu_preempt6013-21ssh09:17:360
81570rcu_preempt0-21swapper/012:30:160
81570rcu_preempt0-21swapper/010:01:010
81570rcu_preempt0-21swapper/009:54:160
81570rcu_preempt0-21swapper/009:12:000
81560rcu_preempt6741-21ssh12:11:290
81560rcu_preempt4531-21sh10:10:160
81560rcu_preempt0-21swapper/011:56:280
81560rcu_preempt0-21swapper/011:45:250
81560rcu_preempt0-21swapper/010:20:100
81560rcu_preempt0-21swapper/010:07:280
81560rcu_preempt0-21swapper/008:55:270
81560rcu_preempt0-21swapper/008:10:010
81550rcu_preempt6783-21ssh11:12:020
81550rcu_preempt17616-21ps08:05:060
81550rcu_preempt0-21swapper/010:35:060
81550rcu_preempt0-21swapper/009:47:190
81550rcu_preempt0-21swapper/009:05:010
81550rcu_preempt0-21swapper/008:50:060
81550rcu_preempt0-21swapper/008:46:150
81550rcu_preempt0-21swapper/008:25:070
81550rcu_preempt0-21swapper/008:25:070
81550rcu_preempt0-21swapper/007:31:060
81540rcu_preempt29004-21ssh09:57:390
81540rcu_preempt0-21swapper/108:28:341
81540rcu_preempt0-21swapper/108:28:341
81540rcu_preempt0-21swapper/107:49:131
81540rcu_preempt0-21swapper/012:15:070
81540rcu_preempt0-21swapper/010:55:570
81540rcu_preempt0-21swapper/009:01:190
81530rcu_preempt20501-21ssh12:38:450
81530rcu_preempt0-21swapper/107:22:471
81530rcu_preempt0-21swapper/008:20:050
81530rcu_preempt0-21swapper/007:40:010
2810995350cyclictest946-21usb-storage12:00:151
2810995349cyclictest17944-21kworker/1:008:21:501
81520rcu_preempt18231-21ssh09:39:431
2810995249cyclictest946-21usb-storage09:55:181
2810995249cyclictest28040-21kworker/1:108:51:421
2810995247cyclictest946-21usb-storage08:54:571
90050510irq/17-ehci_hcd946-21usb-storage07:11:290
90050510irq/17-ehci_hcd2542-21ssh09:11:141
90050510irq/17-ehci_hcd11735-21ssh12:20:441
81510rcu_preempt0-21swapper/008:37:260
2810995149cyclictest946-21usb-storage10:51:311
2810995149cyclictest181ktimersoftd/110:06:581
2810995148cyclictest946-21usb-storage12:32:291
2810995148cyclictest946-21usb-storage12:25:371
2810995148cyclictest946-21usb-storage10:37:171
2810995148cyclictest946-21usb-storage10:22:461
2810995148cyclictest946-21usb-storage10:19:131
2810995148cyclictest946-21usb-storage09:41:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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