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2025-12-16 - 23:24
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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 Tue Dec 16, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81830rcu_preempt0-21swapper/007:08:580
81780rcu_preempt20148-21diskstats09:19:001
81780rcu_preempt0-21swapper/107:09:051
147850750irq/30-eth0-tx-41ktimersoftd/011:57:310
81740rcu_preempt22665-21ssh09:22:340
81740rcu_preempt0-21swapper/112:04:411
81740rcu_preempt0-21swapper/109:26:221
89850730irq/17-ehci_hcd945-21usb-storage11:06:451
81730rcu_preempt14333-21sh09:58:331
81730rcu_preempt14333-21sh09:58:331
81730rcu_preempt0-21swapper/110:25:481
81720rcu_preempt14698-21diskmemload09:13:381
81700rcu_preempt25585-21munin-run07:45:051
81700rcu_preempt22355-21munin-run11:45:071
81700rcu_preempt0-21swapper/112:38:241
81690rcu_preempt24627-21/usr/sbin/munin10:14:031
81690rcu_preempt0-21swapper/112:21:161
81690rcu_preempt0-21swapper/110:46:571
81690rcu_preempt0-21swapper/012:17:580
81690rcu_preempt0-21swapper/010:16:580
81680rcu_preempt9829-21ssh10:39:081
81680rcu_preempt14698-21diskmemload11:39:071
81680rcu_preempt12550-21ssh11:30:321
81680rcu_preempt0-21swapper/112:34:281
81680rcu_preempt0-21swapper/111:23:301
81680rcu_preempt0-21swapper/010:30:490
81670rcu_preempt2840-21sh09:40:220
81670rcu_preempt21394-21grep07:29:071
81670rcu_preempt19220-21ssh12:29:050
81670rcu_preempt0-21swapper/112:09:341
81660rcu_preempt14698-21diskmemload09:46:140
89850650irq/17-ehci_hcd945-21usb-storage12:03:560
81650rcu_preempt24589-21ssh11:49:010
81650rcu_preempt15338-21/usr/sbin/munin12:24:040
81650rcu_preempt14698-21diskmemload09:13:410
81650rcu_preempt11966-21ssh09:54:080
81650rcu_preempt1-21init10:17:571
81650rcu_preempt0-21swapper/111:49:271
81650rcu_preempt0-21swapper/011:28:460
81640rcu_preempt23013-21ls07:34:091
81640rcu_preempt0-21swapper/112:28:161
81640rcu_preempt0-21swapper/111:15:001
81640rcu_preempt0-21swapper/111:03:431
81640rcu_preempt0-21swapper/010:37:560
81640rcu_preempt0-21swapper/010:12:330
81630rcu_preempt15107-21latency09:59:050
81630rcu_preempt15107-21latency09:59:050
81620rcu_preempt0-21swapper/011:00:060
81620rcu_preempt0-21swapper/009:29:090
81600rcu_preempt1026-21ssh10:25:520
81600rcu_preempt0-21swapper/012:33:240
81600rcu_preempt0-21swapper/012:14:020
81600rcu_preempt0-21swapper/011:19:090
81600rcu_preempt0-21swapper/011:19:090
81600rcu_preempt0-21swapper/011:06:380
81590rcu_preempt26261-21cpuspeed_turbos11:04:000
81590rcu_preempt0-21swapper/011:24:060
81580rcu_preempt0-21swapper/011:13:560
81580rcu_preempt0-21swapper/010:45:050
81580rcu_preempt0-21swapper/009:04:030
81570rcu_preempt0-21swapper/012:06:150
81570rcu_preempt0-21swapper/010:24:130
81570rcu_preempt0-21swapper/009:33:130
81570rcu_preempt0-21swapper/008:52:340
81560rcu_preempt20769-21ssh10:54:450
81560rcu_preempt17484-21ssh10:02:580
81560rcu_preempt17484-21ssh10:02:580
81560rcu_preempt0-21swapper/011:37:490
81560rcu_preempt0-21swapper/011:33:310
81560rcu_preempt0-21swapper/007:54:340
81560rcu_preempt0-21swapper/007:13:230
81550rcu_preempt3301-21munin-run08:25:060
81550rcu_preempt22013-21ssh11:44:210
81550rcu_preempt0-21swapper/011:50:470
81550rcu_preempt0-21swapper/009:39:560
81550rcu_preempt0-21swapper/008:59:420
81550rcu_preempt0-21swapper/008:46:130
81550rcu_preempt0-21swapper/008:36:350
81550rcu_preempt0-21swapper/008:19:010
81550rcu_preempt0-21swapper/007:59:080
81540rcu_preempt26902-21ssh12:39:450
81540rcu_preempt19342-21ssh09:17:420
81540rcu_preempt0-21swapper/108:55:131
81540rcu_preempt0-21swapper/010:07:420
81540rcu_preempt0-21swapper/009:09:320
81540rcu_preempt0-21swapper/008:44:010
147650540irq/28-eth0-rx-41ktimersoftd/008:03:580
81530rcu_preempt0-21swapper/108:49:431
81530rcu_preempt0-21swapper/107:24:331
81530rcu_preempt0-21swapper/010:45:510
81530rcu_preempt0-21swapper/008:25:280
81530rcu_preempt0-21swapper/008:10:510
89850520irq/17-ehci_hcd14698-21diskmemload11:26:251
81520rcu_preempt22947-1kworker/1:1H12:18:001
81520rcu_preempt0-21swapper/007:20:310
16754995249cyclictest945-21usb-storage09:32:271
16754995248cyclictest945-21usb-storage12:10:411
81510rcu_preempt0-21swapper/107:54:371
81510rcu_preempt0-21swapper/007:48:250
81510rcu_preempt0-21swapper/007:44:330
16754995148cyclictest945-21usb-storage11:50:411
16754995148cyclictest945-21usb-storage11:16:491
16754995148cyclictest945-21usb-storage11:16:491
16754995148cyclictest945-21usb-storage10:55:541
16754995148cyclictest945-21usb-storage10:52:051
16754995148cyclictest945-21usb-storage10:09:161
16754995148cyclictest945-21usb-storage10:01:291
16754995148cyclictest945-21usb-storage10:01:291
16754995148cyclictest945-21usb-storage09:36:201
89850500irq/17-ehci_hcd945-21usb-storage07:14:001
81500rcu_preempt0-21swapper/109:04:281
81500rcu_preempt0-21swapper/108:52:471
81500rcu_preempt0-21swapper/108:18:371
81500rcu_preempt0-21swapper/108:02:231
81500rcu_preempt0-21swapper/107:56:481
81500rcu_preempt0-21swapper/007:28:400
16754995048cyclictest945-21usb-storage10:31:421
16754995047cyclictest945-21usb-storage10:42:001
16754995047cyclictest945-21usb-storage10:24:591
16754995047cyclictest945-21usb-storage09:51:361
16754995047cyclictest945-21usb-storage09:47:521
16754995047cyclictest945-21usb-storage09:21:541
81490rcu_preempt0-21swapper/008:33:120
81490rcu_preempt0-21swapper/007:37:180
81470rcu_preempt0-21swapper/108:35:381
16754994744cyclictest945-21usb-storage08:25:391
16754994543cyclictest945-21usb-storage09:07:171
16754994240cyclictest181ktimersoftd/111:59:451
16754994138cyclictest945-21usb-storage08:14:581
89850400irq/17-ehci_hcd4115-21ssh09:43:201
81400rcu_preempt1584-21lldpd08:44:061
16754993937cyclictest945-21usb-storage07:18:551
16754993735cyclictest181ktimersoftd/107:39:111
1599370migration/031253-21/usr/sbin/munin08:09:040
147650370irq/28-eth0-rx-0-21swapper/108:31:471
16754993532cyclictest181ktimersoftd/108:24:001
79950340irq/19-0000:00:31696-21python08:09:101
89850330irq/17-ehci_hcd945-21usb-storage07:47:021
81330rcu_preempt3-21ksoftirqd/007:34:050
81320rcu_preempt3-21ksoftirqd/007:19:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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