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2026-04-07 - 16:38
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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 Apr 07, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt0-21swapper/111:23:371
81780rcu_preempt16084-21munin-run11:50:111
81770rcu_preempt19525-21memory11:55:311
81770rcu_preempt0-21swapper/110:10:521
81770rcu_preempt0-21swapper/109:33:121
89850760irq/17-ehci_hcd0-21swapper/110:06:521
81760rcu_preempt0-21swapper/110:15:281
81750rcu_preempt31760-21apt-esm-hook12:20:251
81750rcu_preempt1784-21munin-node12:40:371
81740rcu_preempt28845-1kworker/1:0H09:40:181
81740rcu_preempt2766-21timerwakeupswit07:15:361
81740rcu_preempt0-21swapper/108:20:281
81730rcu_preempt17043-21ntpq11:50:341
81730rcu_preempt0-21swapper/112:36:301
81730rcu_preempt0-21swapper/110:45:211
81730rcu_preempt0-21swapper/108:25:281
81720rcu_preempt5183-21ssh10:25:331
81720rcu_preempt31900-21diskmemload11:49:040
81720rcu_preempt0-21swapper/112:10:271
81720rcu_preempt0-21swapper/110:05:111
81720rcu_preempt0-21swapper/109:53:231
81720rcu_preempt0-21swapper/107:45:341
81710rcu_preempt31900-21diskmemload09:19:130
81710rcu_preempt31705-21rm11:16:260
81710rcu_preempt25088-21ssh10:02:010
81710rcu_preempt23837-21sh11:01:131
81710rcu_preempt16016-21ssh09:45:261
81710rcu_preempt0-21swapper/111:32:261
81710rcu_preempt0-21swapper/107:40:231
81700rcu_preempt31900-21diskmemload12:26:160
81700rcu_preempt0-21swapper/109:38:071
81690rcu_preempt23412-21sh12:03:451
81690rcu_preempt0-21swapper/111:40:301
81690rcu_preempt0-21swapper/111:36:351
81690rcu_preempt0-21swapper/110:44:321
81690rcu_preempt0-21swapper/109:00:251
81690rcu_preempt0-21swapper/107:25:111
81680rcu_preempt31900-21diskmemload09:33:190
81680rcu_preempt0-21swapper/112:30:121
81680rcu_preempt0-21swapper/112:27:161
81680rcu_preempt0-21swapper/111:15:091
81680rcu_preempt0-21swapper/109:26:341
81680rcu_preempt0-21swapper/108:05:251
81670rcu_preempt0-21swapper/110:30:281
81670rcu_preempt0-21swapper/109:17:371
81670rcu_preempt0-21swapper/108:54:261
81670rcu_preempt0-21swapper/107:15:021
81660rcu_preempt7922-21munin-run07:40:111
81660rcu_preempt0-21swapper/111:28:411
81660rcu_preempt0-21swapper/111:19:581
81660rcu_preempt0-21swapper/110:50:561
147950660irq/31-eth0-tx-7047-1kworker/0:2H11:36:340
81650rcu_preempt21031-21ssh09:55:221
81650rcu_preempt0-21swapper/112:08:051
81640rcu_preempt17040-21df_abs08:15:251
81640rcu_preempt10100-21latency10:35:301
81640rcu_preempt0-21swapper/111:05:361
81640rcu_preempt0-21swapper/108:40:251
81630rcu_preempt0-21swapper/110:20:291
81620rcu_preempt6653-21munin-run07:35:111
81620rcu_preempt22260-21if_can108:35:271
81610rcu_preempt7398-21ssh09:29:130
81610rcu_preempt324-21/usr/sbin/munin07:10:280
81610rcu_preempt0-21swapper/109:21:281
81610rcu_preempt0-21swapper/109:05:351
81600rcu_preempt19023-21ssh10:52:350
81600rcu_preempt19-21ksoftirqd/110:55:261
81600rcu_preempt0-21swapper/112:16:451
81600rcu_preempt0-21swapper/109:10:271
81600rcu_preempt0-21swapper/107:50:351
81600rcu_preempt0-21swapper/012:44:340
81590rcu_preempt0-21swapper/108:47:321
81590rcu_preempt0-21swapper/108:02:511
81580rcu_preempt7184-21ssh12:35:140
81580rcu_preempt0-21swapper/107:25:381
81580rcu_preempt0-21swapper/010:25:510
81570rcu_preempt21069-21ssh10:55:470
81570rcu_preempt0-21swapper/108:33:281
89850560irq/17-ehci_hcd1520-21cyclictest08:10:281
81560rcu_preempt0-21swapper/108:55:321
81560rcu_preempt0-21swapper/107:58:491
81560rcu_preempt0-21swapper/012:03:050
81560rcu_preempt0-21swapper/010:44:150
81550rcu_preempt0-21swapper/010:16:300
81540rcu_preempt0-21swapper/007:35:260
89850530irq/17-ehci_hcd945-21usb-storage07:19:240
81530rcu_preempt0-21swapper/011:30:160
81530rcu_preempt0-21swapper/007:20:320
147650530irq/28-eth0-rx-41ktimersoftd/010:22:030
147650530irq/28-eth0-rx-41ktimersoftd/008:03:420
89850520irq/17-ehci_hcd5420-21sh11:29:280
81520rcu_preempt0-21swapper/012:15:360
1522995249cyclictest945-21usb-storage09:41:060
1522995249cyclictest945-21usb-storage08:10:340
1522995248cyclictest945-21usb-storage11:00:270
1522995248cyclictest945-21usb-storage07:48:020
1522995148cyclictest945-21usb-storage07:30:340
81500rcu_preempt0-21swapper/011:59:340
1522995047cyclictest945-21usb-storage10:46:170
1522995047cyclictest945-21usb-storage09:09:020
1522995047cyclictest945-21usb-storage08:20:340
1522995046cyclictest945-21usb-storage11:10:340
147950500irq/31-eth0-tx-0-21swapper/012:31:320
89450490irq/17-ehci_hcd0-21swapper/007:59:310
81490rcu_preempt0-21swapper/012:23:230
1522994946cyclictest945-21usb-storage11:20:280
1522994946cyclictest945-21usb-storage10:35:020
1522994946cyclictest945-21usb-storage09:49:110
1522994946cyclictest945-21usb-storage08:50:340
1522994946cyclictest945-21usb-storage07:40:320
147950490irq/31-eth0-tx-41ktimersoftd/011:51:050
89450480irq/17-ehci_hcd31256-21irqstats09:10:280
1522994845cyclictest945-21usb-storage10:10:520
1522994845cyclictest945-21usb-storage08:15:350
1522994845cyclictest945-21usb-storage07:50:260
1522994844cyclictest945-21usb-storage11:05:330
81470rcu_preempt0-21swapper/009:58:140
81470rcu_preempt0-21swapper/008:59:270
147950470irq/31-eth0-tx-0-21swapper/010:05:440
1522994643cyclictest945-21usb-storage12:12:510
1522994643cyclictest945-21usb-storage08:40:300
1522994641cyclictest945-21usb-storage10:35:400
1522994638cyclictest945-21usb-storage09:05:110
1522994542cyclictest945-21usb-storage08:05:290
1522994542cyclictest945-21usb-storage07:25:270
1522994441cyclictest945-21usb-storage11:43:120
1522994441cyclictest945-21usb-storage09:50:530
1522994441cyclictest945-21usb-storage09:38:090
1522994340cyclictest945-21usb-storage09:24:320
81410rcu_preempt25792-21ssh12:07:400
1522994037cyclictest945-21usb-storage08:25:230
89850380irq/17-ehci_hcd945-21usb-storage08:47:380
89450310irq/17-ehci_hcd22078-21df08:35:230
81310rcu_preempt3-21ksoftirqd/008:30:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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