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2025-12-08 - 00:06
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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 Sun Dec 07, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81730rcu_preempt0-21swapper/107:07:341
81710rcu_preempt11699-21ntp_kernel_pll_07:45:031
81690rcu_preempt17133-21ssh09:39:421
81690rcu_preempt0-21swapper/109:15:031
81680rcu_preempt8989-21apt-get09:24:561
81680rcu_preempt22544-21ssh09:49:281
81680rcu_preempt0-21swapper/112:00:011
81680rcu_preempt0-21swapper/109:58:551
81680rcu_preempt0-21swapper/010:30:330
81680rcu_preempt0-21swapper/007:05:080
81670rcu_preempt0-21swapper/111:46:541
81670rcu_preempt0-21swapper/111:29:011
81670rcu_preempt0-21swapper/110:00:021
81670rcu_preempt0-21swapper/109:53:311
81670rcu_preempt0-21swapper/012:37:440
81670rcu_preempt0-21swapper/009:29:420
81660rcu_preempt9557-21vmstat07:35:091
81660rcu_preempt6523-21ssh10:16:511
81660rcu_preempt26420-21ssh11:50:390
81660rcu_preempt15571-21ssh10:33:471
81660rcu_preempt0-21swapper/111:55:311
81660rcu_preempt0-21swapper/111:22:281
81660rcu_preempt0-21swapper/111:07:461
81660rcu_preempt0-21swapper/109:19:451
81660rcu_preempt0-21swapper/011:45:320
81660rcu_preempt0-21swapper/010:07:020
81650rcu_preempt0-21swapper/112:25:431
81650rcu_preempt0-21swapper/109:05:011
81650rcu_preempt0-21swapper/012:20:190
81650rcu_preempt0-21swapper/007:28:330
81640rcu_preempt14793-21sshd07:59:551
81640rcu_preempt0-21swapper/112:24:251
81640rcu_preempt0-21swapper/111:51:221
81640rcu_preempt0-21swapper/110:39:471
81640rcu_preempt0-21swapper/009:54:370
81630rcu_preempt0-21swapper/112:31:401
81630rcu_preempt0-21swapper/112:11:381
81630rcu_preempt0-21swapper/111:33:141
81630rcu_preempt0-21swapper/110:45:551
81630rcu_preempt0-21swapper/107:10:001
81630rcu_preempt0-21swapper/012:24:570
81630rcu_preempt0-21swapper/011:39:020
81630rcu_preempt0-21swapper/011:29:550
81620rcu_preempt8276-21rm11:18:251
81620rcu_preempt0-21swapper/112:08:311
81620rcu_preempt0-21swapper/111:40:111
81620rcu_preempt0-21swapper/109:41:301
81620rcu_preempt0-21swapper/109:34:071
81620rcu_preempt0-21swapper/108:15:081
81620rcu_preempt0-21swapper/008:23:380
81610rcu_preempt4429-21ssh10:14:121
81610rcu_preempt20496-21strings08:20:071
81610rcu_preempt11316-21ps10:25:101
81610rcu_preempt0-21swapper/108:29:431
81610rcu_preempt0-21swapper/010:44:560
81610rcu_preempt0-21swapper/010:13:430
81600rcu_preempt32077-21ssh11:02:531
81600rcu_preempt1098-21ssh10:07:531
81600rcu_preempt10199-21ssh10:24:281
81600rcu_preempt0-21swapper/108:58:361
81600rcu_preempt0-21swapper/108:25:101
81600rcu_preempt0-21swapper/108:25:101
81600rcu_preempt0-21swapper/107:52:431
81600rcu_preempt0-21swapper/010:35:500
81590rcu_preempt0-21swapper/110:55:381
81590rcu_preempt0-21swapper/110:35:011
81590rcu_preempt0-21swapper/108:10:011
81590rcu_preempt0-21swapper/012:19:420
81590rcu_preempt0-21swapper/011:42:480
81590rcu_preempt0-21swapper/011:14:330
81580rcu_preempt930-21ssh09:10:061
81580rcu_preempt8308-21ssh12:19:011
81580rcu_preempt5149-21ssh11:12:301
81580rcu_preempt0-21swapper/112:37:451
81580rcu_preempt0-21swapper/110:50:121
81580rcu_preempt0-21swapper/012:34:420
81580rcu_preempt0-21swapper/011:25:320
81580rcu_preempt0-21swapper/010:15:530
2013995840cyclictest4517-21kworker/1:007:19:581
81570rcu_preempt2304-21ssh09:12:550
81570rcu_preempt17238-21ssh11:34:561
81570rcu_preempt0-21swapper/108:53:141
81570rcu_preempt0-21swapper/107:40:031
81570rcu_preempt0-21swapper/011:57:210
81570rcu_preempt0-21swapper/011:05:030
81570rcu_preempt0-21swapper/010:57:420
90050560irq/17-ehci_hcd2010-21cyclictest07:30:001
81560rcu_preempt20679-21ssh10:42:080
81560rcu_preempt15072-21ssh09:35:020
81560rcu_preempt0-21swapper/108:47:281
81560rcu_preempt0-21swapper/012:00:040
81560rcu_preempt0-21swapper/009:21:190
81560rcu_preempt0-21swapper/009:14:420
81560rcu_preempt0-21swapper/007:33:340
81550rcu_preempt7907-21ssh11:17:170
81550rcu_preempt32377-21diskmemload11:22:450
81550rcu_preempt25218-21ntp_states10:50:130
81550rcu_preempt0-21swapper/108:42:561
81550rcu_preempt0-21swapper/009:58:530
81550rcu_preempt0-21swapper/009:34:180
81550rcu_preempt0-21swapper/007:38:570
81540rcu_preempt9288-21ssh10:21:230
81540rcu_preempt29970-21ssh10:00:360
81540rcu_preempt14242-21ntp_states07:55:051
81540rcu_preempt12171-21ssh10:27:030
81540rcu_preempt0-21swapper/012:10:170
81540rcu_preempt0-21swapper/012:07:220
81540rcu_preempt0-21swapper/009:08:400
81540rcu_preempt0-21swapper/008:09:590
81540rcu_preempt0-21swapper/007:10:050
81530rcu_preempt32377-21diskmemload09:40:240
81530rcu_preempt21537-21ssh09:46:060
81530rcu_preempt0-21swapper/011:03:020
81530rcu_preempt0-21swapper/007:44:580
81520rcu_preempt0-21swapper/008:47:420
81520rcu_preempt0-21swapper/008:15:100
2012995249cyclictest946-21usb-storage08:04:570
81510rcu_preempt23889-21fw_forwarded_lo08:35:001
81510rcu_preempt0-21swapper/008:36:550
81510rcu_preempt0-21swapper/007:40:090
2013995148cyclictest946-21usb-storage07:25:031
2012995149cyclictest946-21usb-storage08:39:580
2012995148cyclictest946-21usb-storage07:55:250
81500rcu_preempt0-21swapper/008:25:220
81500rcu_preempt0-21swapper/008:25:220
81500rcu_preempt0-21swapper/007:52:520
81490rcu_preempt0-21swapper/008:30:550
81490rcu_preempt0-21swapper/007:14:530
151850490irq/30-eth0-tx-0-21swapper/108:59:541
81480rcu_preempt4337-21python07:15:091
81470rcu_preempt0-21swapper/007:21:510
81440rcu_preempt0-21swapper/009:04:350
2012994340cyclictest946-21usb-storage08:00:310
2012994139cyclictest946-21usb-storage08:50:060
2012994138cyclictest946-21usb-storage08:55:090
151950380irq/31-eth0-tx-9568-21kworker/1:108:04:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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