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2026-04-09 - 23:28
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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 all highest latencies:
System rackcslot3.osadl.org (updated Thu Apr 09, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt0-21swapper/009:08:190
81780rcu_preempt3-21ksoftirqd/009:45:260
81770rcu_preempt0-21swapper/011:33:240
81760rcu_preempt19-21ksoftirqd/109:30:341
81760rcu_preempt0-21swapper/107:11:531
81750rcu_preempt3-21ksoftirqd/011:24:300
81750rcu_preempt1308-21tr12:40:301
81740rcu_preempt0-21swapper/010:06:460
81730rcu_preempt19426-1kworker/1:0H12:11:391
81720rcu_preempt6610-21sh09:43:060
81720rcu_preempt1154-21sh11:35:551
81720rcu_preempt1154-21sh11:35:551
81720rcu_preempt11475-21sh09:52:120
81710rcu_preempt25014-21sh10:18:511
81710rcu_preempt16518-21needreboot08:45:361
81710rcu_preempt0-21swapper/112:00:351
81710rcu_preempt0-21swapper/111:00:281
81710rcu_preempt0-21swapper/108:10:361
81700rcu_preempt28387-21sh11:26:091
81700rcu_preempt0-21swapper/010:54:120
81700rcu_preempt0-21swapper/010:31:340
81690rcu_preempt12310-21sh11:58:351
81690rcu_preempt0-21swapper/107:55:321
81690rcu_preempt0-21swapper/008:20:160
89050680irq/17-ehci_hcd945-21usb-storage09:56:161
81680rcu_preempt9533-21apt-get08:20:281
81680rcu_preempt26500-21wc07:15:421
81680rcu_preempt0-21swapper/112:36:211
81680rcu_preempt0-21swapper/110:55:391
81680rcu_preempt0-21swapper/109:26:091
81680rcu_preempt0-21swapper/010:36:000
81670rcu_preempt0-21swapper/111:23:301
81670rcu_preempt0-21swapper/111:12:301
81670rcu_preempt0-21swapper/110:46:481
81670rcu_preempt0-21swapper/012:20:560
81670rcu_preempt0-21swapper/012:05:330
81660rcu_preempt3-21ksoftirqd/009:37:060
81660rcu_preempt1715-21in:imuxsock08:45:160
81660rcu_preempt0-21swapper/111:32:081
81660rcu_preempt0-21swapper/111:16:141
81650rcu_preempt3090-21munin-run07:55:161
81650rcu_preempt26694-21fw_forwarded_lo09:20:321
81650rcu_preempt15749-21df12:05:291
81650rcu_preempt0-21swapper/011:56:150
81650rcu_preempt0-21swapper/008:55:160
81640rcu_preempt11186-21ssh09:51:081
81640rcu_preempt0-21swapper/112:24:101
81640rcu_preempt0-21swapper/110:08:031
81640rcu_preempt0-21swapper/108:35:321
81640rcu_preempt0-21swapper/108:18:271
81640rcu_preempt0-21swapper/107:21:531
81640rcu_preempt0-21swapper/011:35:220
81640rcu_preempt0-21swapper/011:35:220
81640rcu_preempt0-21swapper/011:30:080
81640rcu_preempt0-21swapper/009:56:310
81640rcu_preempt0-21swapper/007:40:330
81630rcu_preempt2457-21rm12:40:540
81630rcu_preempt22254-21ssh10:12:581
81630rcu_preempt18838-21if_wlan008:55:350
81630rcu_preempt0-21swapper/107:36:031
81630rcu_preempt0-21swapper/107:36:031
81630rcu_preempt0-21swapper/012:35:190
81630rcu_preempt0-21swapper/012:27:140
81630rcu_preempt0-21swapper/011:50:290
81630rcu_preempt0-21swapper/011:05:350
81630rcu_preempt0-21swapper/010:55:380
81630rcu_preempt0-21swapper/009:23:280
81630rcu_preempt0-21swapper/008:45:290
81620rcu_preempt5070-21ssh10:41:381
81620rcu_preempt0-21swapper/110:50:221
81620rcu_preempt0-21swapper/110:35:231
81620rcu_preempt0-21swapper/107:41:151
147950620irq/31-eth0-tx-0-21swapper/109:38:041
81610rcu_preempt9237-21ssh11:51:401
81610rcu_preempt6611-21ssh11:46:481
81610rcu_preempt30689-21ssh12:34:551
81610rcu_preempt3-21ksoftirqd/012:30:480
81610rcu_preempt3-21ksoftirqd/010:46:300
81610rcu_preempt25252-21ssh09:17:291
81610rcu_preempt0-21swapper/110:25:281
81610rcu_preempt0-21swapper/010:26:500
81610rcu_preempt0-21swapper/008:20:280
81600rcu_preempt4312-21missed_timers10:40:370
81600rcu_preempt12339-21fw_forwarded_lo08:30:331
81600rcu_preempt0-21swapper/112:25:341
81600rcu_preempt0-21swapper/111:07:161
81600rcu_preempt0-21swapper/009:00:320
81600rcu_preempt0-21swapper/007:55:290
81600rcu_preempt0-21swapper/007:25:330
81600rcu_preempt0-21swapper/007:12:260
81590rcu_preempt0-21swapper/110:23:491
81590rcu_preempt0-21swapper/110:00:401
81590rcu_preempt0-21swapper/109:06:041
81590rcu_preempt0-21swapper/012:00:350
81590rcu_preempt0-21swapper/011:15:310
89850580irq/17-ehci_hcd945-21usb-storage08:25:161
89850580irq/17-ehci_hcd0-21swapper/109:03:261
81580rcu_preempt4568-21ssh11:43:521
81580rcu_preempt31310-21ssh09:29:130
81580rcu_preempt18482-21diskstats12:10:300
81580rcu_preempt17297-21ssh10:04:160
81580rcu_preempt0-21swapper/112:16:091
81580rcu_preempt0-21swapper/109:43:351
81580rcu_preempt0-21swapper/108:05:291
81580rcu_preempt0-21swapper/107:30:331
81580rcu_preempt0-21swapper/012:18:260
81580rcu_preempt0-21swapper/009:35:110
81570rcu_preempt14855-21fw_forwarded_lo08:40:321
81570rcu_preempt0-21swapper/110:32:361
81570rcu_preempt0-21swapper/109:10:531
81570rcu_preempt0-21swapper/108:55:471
81570rcu_preempt0-21swapper/011:48:450
81570rcu_preempt0-21swapper/011:42:390
81570rcu_preempt0-21swapper/011:13:070
81570rcu_preempt0-21swapper/007:15:400
81560rcu_preempt24429-21ssh10:16:290
81560rcu_preempt13123-21wc08:30:430
81560rcu_preempt0-21swapper/108:52:141
81560rcu_preempt0-21swapper/009:10:310
81560rcu_preempt0-21swapper/007:48:540
81550rcu_preempt7676-21fw_conntrack09:45:311
81550rcu_preempt31401-21sensors07:35:400
81550rcu_preempt31401-21sensors07:35:400
81550rcu_preempt23439-21ssh09:15:210
81550rcu_preempt14487-21ssh11:00:320
81550rcu_preempt0-21swapper/107:45:411
81550rcu_preempt0-21swapper/007:20:360
81540rcu_preempt0-21swapper/010:21:220
81530rcu_preempt14453-21munin-run08:40:160
81520rcu_preempt0-21swapper/010:12:000
89450510irq/17-ehci_hcd181ktimersoftd/107:25:261
81500rcu_preempt0-21swapper/007:50:490
81500rcu_preempt0-21swapper/007:30:250
25320994744cyclictest41ktimersoftd/008:03:400
147650470irq/28-eth0-rx-945-21usb-storage08:11:430
81460rcu_preempt11386-21memory08:25:360
81420rcu_preempt6863-21sshd08:07:040
147950380irq/31-eth0-tx-22505-21kworker/1:208:00:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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