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2026-04-02 - 20:29
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Thu Apr 02, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt1750-21if_wlan010:40:161
81760rcu_preempt2482-21cpuspeed_turbos09:40:111
81750rcu_preempt30142-21ssh10:32:090
81750rcu_preempt2138-21snmpd11:53:181
81750rcu_preempt0-21swapper/111:03:531
81740rcu_preempt19839-21munin-node09:10:080
81720rcu_preempt17563-21sh10:09:050
81710rcu_preempt3-21ksoftirqd/011:03:370
81710rcu_preempt0-21swapper/009:43:470
81700rcu_preempt31550-21uname10:35:150
81700rcu_preempt30366-21diskstats11:35:131
81700rcu_preempt21277-21memory10:15:180
81700rcu_preempt0-21swapper/010:46:360
81700rcu_preempt0-21swapper/010:10:150
81690rcu_preempt20466-21sensors11:15:221
81690rcu_preempt0-21swapper/112:30:561
81690rcu_preempt0-21swapper/009:38:210
81680rcu_preempt8824-21sh10:54:540
81680rcu_preempt19500-21ssh11:15:090
81680rcu_preempt0-21swapper/012:09:080
81680rcu_preempt0-21swapper/010:28:060
81670rcu_preempt30788-21sh09:31:360
81670rcu_preempt11719-21sh09:56:430
81670rcu_preempt0-21swapper/012:20:290
81670rcu_preempt0-21swapper/008:45:190
81660rcu_preempt8325-21ssh11:55:110
81660rcu_preempt25339-21sh12:27:040
81660rcu_preempt19-21ksoftirqd/110:26:121
81660rcu_preempt0-21swapper/012:35:460
89850640irq/17-ehci_hcd945-21usb-storage08:00:420
81640rcu_preempt8571-21cpuspeed_turbos08:25:100
81640rcu_preempt8571-21cpuspeed_turbos08:25:100
81640rcu_preempt0-21swapper/008:30:570
81630rcu_preempt23356-21df_abs10:20:120
81620rcu_preempt0-21swapper/012:31:200
81620rcu_preempt0-21swapper/011:10:540
147950620irq/31-eth0-tx-20181-21kworker/1:207:10:441
81610rcu_preempt0-21swapper/009:20:230
89850600irq/17-ehci_hcd945-21usb-storage09:16:211
81600rcu_preempt4922-21df_abs08:10:070
81600rcu_preempt23136-21sh09:18:000
81600rcu_preempt0-21swapper/012:00:120
81600rcu_preempt0-21swapper/011:05:140
1599600migration/028670-21/usr/sbin/munin07:10:090
81590rcu_preempt9106-21ssh09:51:500
81590rcu_preempt9106-21ssh09:51:500
81590rcu_preempt7032-21rm11:51:490
81590rcu_preempt24986-21df_abs11:25:110
81590rcu_preempt0-21swapper/011:44:040
81590rcu_preempt0-21swapper/010:00:210
81580rcu_preempt9384-21ssh11:55:591
81580rcu_preempt0-21swapper/011:45:320
81580rcu_preempt0-21swapper/011:36:110
81580rcu_preempt0-21swapper/008:40:170
81580rcu_preempt0-21swapper/007:30:140
89850570irq/17-ehci_hcd945-21usb-storage10:50:231
81570rcu_preempt27483-21ssh11:30:110
81570rcu_preempt22571-21ssh10:18:261
81570rcu_preempt18090-21ssh11:10:411
81570rcu_preempt0-21swapper/112:29:491
81570rcu_preempt0-21swapper/111:40:261
81570rcu_preempt0-21swapper/110:37:251
81570rcu_preempt0-21swapper/108:45:021
81570rcu_preempt0-21swapper/010:58:350
81570rcu_preempt0-21swapper/008:59:340
81560rcu_preempt5987-21ssh10:48:501
81560rcu_preempt370-21ssh12:40:551
81560rcu_preempt0-21swapper/112:20:231
81560rcu_preempt0-21swapper/112:16:391
81560rcu_preempt0-21swapper/112:07:351
81560rcu_preempt0-21swapper/111:08:191
81560rcu_preempt0-21swapper/110:58:141
81560rcu_preempt0-21swapper/109:35:501
81560rcu_preempt0-21swapper/109:31:091
81560rcu_preempt0-21swapper/109:06:511
81560rcu_preempt0-21swapper/108:54:381
81560rcu_preempt0-21swapper/108:44:231
81560rcu_preempt0-21swapper/108:19:451
81560rcu_preempt0-21swapper/108:08:051
81560rcu_preempt0-21swapper/107:58:051
81560rcu_preempt0-21swapper/107:43:231
81560rcu_preempt0-21swapper/107:31:141
81560rcu_preempt0-21swapper/107:28:021
81560rcu_preempt0-21swapper/107:21:571
81560rcu_preempt0-21swapper/012:13:390
81560rcu_preempt0-21swapper/011:20:140
81560rcu_preempt0-21swapper/009:05:340
81560rcu_preempt0-21swapper/009:00:060
81560rcu_preempt0-21swapper/007:50:130
81560rcu_preempt0-21swapper/007:49:340
81550rcu_preempt0-21swapper/110:05:281
81550rcu_preempt0-21swapper/109:52:291
81550rcu_preempt0-21swapper/109:52:291
81550rcu_preempt0-21swapper/109:28:361
81550rcu_preempt0-21swapper/108:21:521
81550rcu_preempt0-21swapper/107:35:141
81550rcu_preempt0-21swapper/012:44:490
81550rcu_preempt0-21swapper/008:54:360
81550rcu_preempt0-21swapper/008:05:340
81540rcu_preempt28498-21ssh09:27:410
81540rcu_preempt11969-21ssh12:01:051
81540rcu_preempt0-21swapper/111:32:251
81540rcu_preempt0-21swapper/111:25:271
81540rcu_preempt0-21swapper/107:18:521
81540rcu_preempt0-21swapper/012:18:310
81540rcu_preempt0-21swapper/009:48:060
81540rcu_preempt0-21swapper/008:35:230
81540rcu_preempt0-21swapper/007:16:110
81530rcu_preempt3022-21ssh10:42:310
81530rcu_preempt19809-21ssh10:12:351
81530rcu_preempt19-21ksoftirqd/111:20:241
81530rcu_preempt11837-21ssh09:57:071
81530rcu_preempt0-21swapper/007:58:040
81530rcu_preempt0-21swapper/007:29:020
29583995349cyclictest945-21usb-storage12:11:351
81520rcu_preempt30026-21ssh12:35:261
81520rcu_preempt0-21swapper/110:01:431
81520rcu_preempt0-21swapper/008:21:140
81520rcu_preempt0-21swapper/007:44:300
81520rcu_preempt0-21swapper/007:22:380
81510rcu_preempt0-21swapper/110:20:271
29583995148cyclictest945-21usb-storage11:46:301
29583995148cyclictest945-21usb-storage09:20:411
29583995148cyclictest945-21usb-storage08:32:471
81500rcu_preempt1679-21sshd07:49:531
29583995046cyclictest945-21usb-storage08:35:371
81490rcu_preempt8635-21df08:25:101
81490rcu_preempt8635-21df08:25:101
29583994946cyclictest945-21usb-storage09:47:021
29582994946cyclictest945-21usb-storage08:15:130
89850470irq/17-ehci_hcd945-21usb-storage09:00:141
29583994744cyclictest945-21usb-storage08:00:421
147650470irq/28-eth0-rx-0-21swapper/108:58:201
29582994643cyclictest945-21usb-storage07:34:580
147650440irq/28-eth0-rx-0-21swapper/108:10:041
147850430irq/30-eth0-tx-0-21swapper/110:30:081
147650410irq/28-eth0-rx-0-21swapper/109:13:441
147950370irq/31-eth0-tx-0-21swapper/107:52:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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