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2026-08-15 - 16:57
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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 highest latencies:
System rackcslot3.osadl.org (updated Sat Aug 15, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950790irq/17-ehci_hcd26718-1kworker/1:0H07:41:481
81780rcu_preempt19-21ksoftirqd/111:20:451
81780rcu_preempt0-21swapper/007:14:140
81760rcu_preempt0-21swapper/109:04:041
89950730irq/17-ehci_hcd945-21usb-storage07:16:061
81730rcu_preempt4873-21latency_hist12:19:041
81730rcu_preempt19-21ksoftirqd/111:51:231
81730rcu_preempt13386-21/usr/sbin/munin12:34:240
81720rcu_preempt0-21swapper/012:19:310
81720rcu_preempt0-21swapper/009:34:200
81710rcu_preempt0-21swapper/109:59:171
81710rcu_preempt0-21swapper/012:14:280
81710rcu_preempt0-21swapper/011:53:020
81710rcu_preempt0-21swapper/009:04:270
81700rcu_preempt19-21ksoftirqd/109:30:281
81700rcu_preempt0-21swapper/009:31:060
81700rcu_preempt0-21swapper/007:29:300
81690rcu_preempt0-21swapper/012:45:590
81690rcu_preempt0-21swapper/011:54:230
81690rcu_preempt0-21swapper/010:19:040
81690rcu_preempt0-21swapper/010:09:040
81680rcu_preempt19-21ksoftirqd/112:36:331
81680rcu_preempt0-21swapper/010:39:560
81680rcu_preempt0-21swapper/007:59:230
81670rcu_preempt0-21swapper/010:33:310
81660rcu_preempt0-21swapper/010:47:430
81650rcu_preempt8046-21idleruntime-cro09:19:030
81650rcu_preempt0-21swapper/011:59:340
81640rcu_preempt15515-21ssh12:39:180
81640rcu_preempt12157-21ssh12:32:220
81640rcu_preempt0-21swapper/012:09:360
89550630irq/17-ehci_hcd0-21swapper/008:29:290
81630rcu_preempt18769-21timerandwakeup07:49:280
81630rcu_preempt10612-21if_eth107:19:210
81630rcu_preempt0-21swapper/011:47:210
81630rcu_preempt0-21swapper/011:04:210
81630rcu_preempt0-21swapper/010:54:220
81630rcu_preempt0-21swapper/009:39:310
89950620irq/17-ehci_hcd945-21usb-storage12:32:251
81620rcu_preempt24057-21latency_hist09:49:040
81620rcu_preempt0-21swapper/008:14:180
81610rcu_preempt9065-21fw_conntrack11:24:200
81600rcu_preempt22709-21sshd09:44:330
81600rcu_preempt0-21swapper/112:28:181
81600rcu_preempt0-21swapper/011:23:060
81600rcu_preempt0-21swapper/011:17:040
81600rcu_preempt0-21swapper/008:39:260
81590rcu_preempt4046-21ssh10:11:431
81590rcu_preempt17647-21ssh10:39:011
81590rcu_preempt1646-21ssh10:07:491
81590rcu_preempt12277-21ssh09:24:491
81590rcu_preempt0-21swapper/112:45:161
81590rcu_preempt0-21swapper/112:00:191
81590rcu_preempt0-21swapper/111:41:431
81590rcu_preempt0-21swapper/111:37:111
81590rcu_preempt0-21swapper/111:29:151
81590rcu_preempt0-21swapper/110:54:221
81590rcu_preempt0-21swapper/110:50:261
81590rcu_preempt0-21swapper/110:45:031
81590rcu_preempt0-21swapper/109:40:201
81590rcu_preempt0-21swapper/109:38:191
81590rcu_preempt0-21swapper/109:22:231
81590rcu_preempt0-21swapper/108:53:331
81590rcu_preempt0-21swapper/108:29:281
81590rcu_preempt0-21swapper/108:04:261
81590rcu_preempt0-21swapper/107:44:291
81590rcu_preempt0-21swapper/107:19:271
81590rcu_preempt0-21swapper/009:24:370
81580rcu_preempt31952-21ssh11:04:431
81580rcu_preempt1327-21ssh12:11:091
81580rcu_preempt0-21swapper/112:39:291
81580rcu_preempt0-21swapper/112:14:231
81580rcu_preempt0-21swapper/111:48:531
81580rcu_preempt0-21swapper/111:15:511
81580rcu_preempt0-21swapper/110:39:241
81580rcu_preempt0-21swapper/110:21:191
81580rcu_preempt0-21swapper/110:16:581
81580rcu_preempt0-21swapper/109:55:511
81580rcu_preempt0-21swapper/109:49:501
81580rcu_preempt0-21swapper/109:48:041
81580rcu_preempt0-21swapper/108:58:261
81580rcu_preempt0-21swapper/108:19:131
81580rcu_preempt0-21swapper/107:31:461
81580rcu_preempt0-21swapper/107:27:541
81580rcu_preempt0-21swapper/011:12:500
81580rcu_preempt0-21swapper/008:59:170
81570rcu_preempt9520-21ssh12:27:230
81570rcu_preempt8947-21ssh10:20:390
81570rcu_preempt31718-21sshd12:08:341
81570rcu_preempt29298-21ssh10:59:430
81570rcu_preempt24395-21ssh10:50:150
81570rcu_preempt17810-21sh11:40:010
81570rcu_preempt0-21swapper/111:24:281
81570rcu_preempt0-21swapper/111:00:031
81570rcu_preempt0-21swapper/110:27:141
81570rcu_preempt0-21swapper/109:14:211
81570rcu_preempt0-21swapper/108:17:431
81570rcu_preempt0-21swapper/010:27:320
81570rcu_preempt0-21swapper/010:10:330
81570rcu_preempt0-21swapper/007:39:160
10050995748cyclictest945-21usb-storage11:56:391
81560rcu_preempt15331-21ssh11:35:250
81560rcu_preempt0-21swapper/110:31:321
81560rcu_preempt0-21swapper/109:10:501
81560rcu_preempt0-21swapper/108:24:301
81560rcu_preempt0-21swapper/107:59:151
81560rcu_preempt0-21swapper/009:22:470
81560rcu_preempt0-21swapper/007:25:480
10050995644cyclictest945-21usb-storage11:09:431
81550rcu_preempt0-21swapper/107:55:371
81550rcu_preempt0-21swapper/009:59:220
81550rcu_preempt0-21swapper/009:54:080
81550rcu_preempt0-21swapper/008:20:530
81550rcu_preempt0-21swapper/008:04:190
81540rcu_preempt30852-21ssh12:05:250
81540rcu_preempt12814-21ssh11:30:370
81540rcu_preempt0-21swapper/010:34:370
81540rcu_preempt0-21swapper/008:09:200
81540rcu_preempt0-21swapper/007:34:160
81530rcu_preempt32422-21ps08:44:280
81530rcu_preempt29375-21diskstats08:34:191
81530rcu_preempt0-21swapper/008:55:360
81530rcu_preempt0-21swapper/008:50:240
10050995348cyclictest945-21usb-storage09:05:341
81520rcu_preempt0-21swapper/007:55:280
10050995148cyclictest945-21usb-storage08:44:281
10050995148cyclictest945-21usb-storage08:09:231
10050995148cyclictest945-21usb-storage07:49:251
10050995148cyclictest945-21usb-storage07:37:381
10050995047cyclictest945-21usb-storage08:39:171
10049995047cyclictest945-21usb-storage08:24:220
81490rcu_preempt0-21swapper/008:37:440
81480rcu_preempt0-21swapper/007:44:430
1599400migration/05970-21/usr/sbin/munin09:09:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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