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2025-12-04 - 16:46
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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 Dec 04, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81820rcu_preempt2117-21tail07:05:091
81730rcu_preempt6468-21ssh09:19:561
81690rcu_preempt0-21swapper/110:34:451
81690rcu_preempt0-21swapper/011:15:120
81690rcu_preempt0-21swapper/010:43:460
81680rcu_preempt30258-1kworker/0:1H11:13:090
81680rcu_preempt19980-21sshd12:38:090
81680rcu_preempt0-21swapper/112:20:221
81680rcu_preempt0-21swapper/110:40:461
81680rcu_preempt0-21swapper/007:15:010
81670rcu_preempt23437-21ssh11:45:030
81670rcu_preempt10813-21sh11:21:401
81670rcu_preempt10805-21ntp_states07:40:080
81670rcu_preempt0-21swapper/111:25:241
81670rcu_preempt0-21swapper/109:53:231
81670rcu_preempt0-21swapper/009:49:580
81660rcu_preempt2690-21tr10:09:580
81660rcu_preempt17615-21ssh11:34:570
81660rcu_preempt16927-21sh11:33:161
81660rcu_preempt16881-21diskmemload12:31:290
81660rcu_preempt1648-21munin-run12:04:440
81660rcu_preempt0-21swapper/111:03:461
81660rcu_preempt0-21swapper/010:39:160
81650rcu_preempt0-21swapper/112:08:271
81650rcu_preempt0-21swapper/111:35:591
81650rcu_preempt0-21swapper/107:27:341
81640rcu_preempt30045-21needreboot10:00:041
81640rcu_preempt14797-21ssh09:34:441
81640rcu_preempt0-21swapper/011:29:440
81640rcu_preempt0-21swapper/010:23:480
81630rcu_preempt32006-21if_eth009:05:041
81630rcu_preempt0-21swapper/108:45:091
81630rcu_preempt0-21swapper/107:50:021
81620rcu_preempt0-21swapper/109:45:041
81620rcu_preempt0-21swapper/109:41:341
81620rcu_preempt0-21swapper/108:33:221
81620rcu_preempt0-21swapper/009:34:280
81620rcu_preempt0-21swapper/008:59:580
81620rcu_preempt0-21swapper/007:05:100
81610rcu_preempt27951-21sh09:56:050
81610rcu_preempt2739-21ssh11:07:341
81610rcu_preempt0-21swapper/110:08:071
81610rcu_preempt0-21swapper/109:36:071
81610rcu_preempt0-21swapper/008:20:060
81600rcu_preempt5349-21ssh09:17:101
81600rcu_preempt29008-21ssh10:55:231
81600rcu_preempt12770-21ssh10:27:051
81600rcu_preempt0-21swapper/112:29:441
81600rcu_preempt0-21swapper/112:04:081
81600rcu_preempt0-21swapper/110:49:201
81600rcu_preempt0-21swapper/110:30:021
81600rcu_preempt0-21swapper/108:13:321
81600rcu_preempt0-21swapper/012:28:340
81600rcu_preempt0-21swapper/012:20:150
81600rcu_preempt0-21swapper/010:08:060
81600rcu_preempt0-21swapper/007:25:140
81590rcu_preempt9122-21modprobe07:35:011
81590rcu_preempt7584-21ssh10:18:031
81590rcu_preempt7514-21switchtime11:15:131
81590rcu_preempt5356-21ssh12:10:061
81590rcu_preempt4201-21strings09:15:050
81590rcu_preempt27451-21ssh11:51:261
81590rcu_preempt25382-21ssh11:48:531
81590rcu_preempt22620-21ssh09:47:310
81590rcu_preempt0-21swapper/112:37:001
81590rcu_preempt0-21swapper/112:16:071
81590rcu_preempt0-21swapper/111:10:011
81590rcu_preempt0-21swapper/110:50:111
81590rcu_preempt0-21swapper/110:12:351
81590rcu_preempt0-21swapper/109:12:521
81590rcu_preempt0-21swapper/011:59:340
81590rcu_preempt0-21swapper/010:50:050
81580rcu_preempt28524-21ssh11:54:430
81580rcu_preempt17417-21ssh12:33:181
81580rcu_preempt11454-21ssh11:23:490
81580rcu_preempt0-21swapper/111:55:041
81580rcu_preempt0-21swapper/111:40:191
81580rcu_preempt0-21swapper/109:58:221
81580rcu_preempt0-21swapper/109:25:031
81580rcu_preempt0-21swapper/107:34:351
81580rcu_preempt0-21swapper/107:34:351
81580rcu_preempt0-21swapper/107:15:101
81580rcu_preempt0-21swapper/107:13:011
81570rcu_preempt6874-21if_err_eth009:20:020
81570rcu_preempt16078-21ssh10:33:350
81570rcu_preempt12359-21timerandwakeup07:45:081
81570rcu_preempt0-21swapper/110:23:451
81570rcu_preempt0-21swapper/108:55:061
81570rcu_preempt0-21swapper/108:04:061
81570rcu_preempt0-21swapper/107:40:591
81570rcu_preempt0-21swapper/012:08:350
81570rcu_preempt0-21swapper/011:41:230
90050560irq/17-ehci_hcd0-21swapper/007:37:090
81560rcu_preempt8196-21ntpdc12:15:060
81560rcu_preempt11486-21ssh09:28:370
81560rcu_preempt0-21swapper/108:21:081
81560rcu_preempt0-21swapper/108:08:201
81560rcu_preempt0-21swapper/011:01:120
81560rcu_preempt0-21swapper/010:04:390
81560rcu_preempt0-21swapper/009:14:320
81550rcu_preempt24270-21ssh10:48:220
81550rcu_preempt14150-21if_can007:55:011
81550rcu_preempt0-21swapper/107:20:391
81550rcu_preempt0-21swapper/010:27:090
81550rcu_preempt0-21swapper/009:35:000
81550rcu_preempt0-21swapper/007:45:040
81540rcu_preempt22080-21head08:25:041
81540rcu_preempt0-21swapper/108:18:441
81540rcu_preempt0-21swapper/012:13:320
81540rcu_preempt0-21swapper/011:07:290
81540rcu_preempt0-21swapper/010:18:540
81540rcu_preempt0-21swapper/009:40:060
81540rcu_preempt0-21swapper/009:05:100
81540rcu_preempt0-21swapper/008:37:480
81540rcu_preempt0-21swapper/008:09:020
81540rcu_preempt0-21swapper/007:52:060
81530rcu_preempt13206-21ssh11:25:280
81530rcu_preempt0-21swapper/010:56:080
81520rcu_preempt30117-21munin-run08:59:440
81520rcu_preempt24212-21fw_conntrack08:35:001
81520rcu_preempt0-21swapper/007:56:290
81520rcu_preempt0-21swapper/007:30:030
81520rcu_preempt0-21swapper/007:30:030
81510rcu_preempt23412-21ntp_states08:30:060
81510rcu_preempt0-21swapper/008:52:090
81510rcu_preempt0-21swapper/008:47:180
2360995147cyclictest946-21usb-storage08:15:390
151850480irq/30-eth0-tx-946-21usb-storage07:59:570
81470rcu_preempt30696-21if_eth109:00:031
81470rcu_preempt0-21swapper/007:24:200
81450rcu_preempt25704-21irqstats08:40:050
81440rcu_preempt17780-21df08:09:580
151950430irq/31-eth0-tx-25054-21kworker/1:208:44:021
81400rcu_preempt0-21swapper/108:54:251
81390rcu_preempt22155-21ntp_states08:25:050
89650380irq/17-ehci_hcd0-21swapper/007:13:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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