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2025-11-23 - 17:08
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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 Sun Nov 23, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt0-21swapper/107:05:161
81780rcu_preempt12435-21mailstats07:40:171
81760rcu_preempt25674-21sshd10:48:291
90050740irq/17-ehci_hcd946-21usb-storage11:00:121
81740rcu_preempt0-21swapper/012:23:250
81720rcu_preempt4164-21netstat12:05:131
81720rcu_preempt22868-21munin-run08:24:520
81710rcu_preempt10751-21if_eth107:35:091
81710rcu_preempt0-21swapper/011:34:560
81700rcu_preempt0-21swapper/110:32:051
81690rcu_preempt19-21ksoftirqd/112:36:281
81690rcu_preempt0-21swapper/008:15:110
81680rcu_preempt19275-1kworker/0:0H09:31:490
81680rcu_preempt0-21swapper/011:45:020
81680rcu_preempt0-21swapper/011:21:450
81680rcu_preempt0-21swapper/010:25:070
81670rcu_preempt30324-21sh11:55:000
81670rcu_preempt2884-21memory11:05:110
81670rcu_preempt0-21swapper/009:52:570
81660rcu_preempt14853-21ps12:25:120
81660rcu_preempt0-21swapper/111:30:391
81660rcu_preempt0-21swapper/012:35:510
81660rcu_preempt0-21swapper/010:15:330
90050640irq/17-ehci_hcd946-21usb-storage12:20:151
81640rcu_preempt5105-21ssh09:15:040
81640rcu_preempt4638-21kworker/0:007:05:070
81640rcu_preempt29508-21ssh10:55:100
81640rcu_preempt2235-21snmpd09:49:210
81630rcu_preempt9820-21diskstats10:20:080
81630rcu_preempt0-21swapper/008:25:160
81620rcu_preempt16684-21latency_hist12:29:510
81620rcu_preempt1374-21ssh11:02:440
81620rcu_preempt0-21swapper/010:45:140
81610rcu_preempt0-21swapper/008:10:180
81610rcu_preempt0-21swapper/007:38:550
81600rcu_preempt0-21swapper/012:14:440
81590rcu_preempt18695-21ssh11:33:440
81590rcu_preempt0-21swapper/110:20:101
81590rcu_preempt0-21swapper/008:45:070
81580rcu_preempt8285-21ssh10:16:351
81580rcu_preempt7682-21ssh09:19:461
81580rcu_preempt31357-21strings10:00:121
81580rcu_preempt16011-21ssh12:27:581
81580rcu_preempt13103-21ssh11:24:181
81580rcu_preempt0-21swapper/111:55:141
81580rcu_preempt0-21swapper/111:46:251
81580rcu_preempt0-21swapper/111:40:061
81580rcu_preempt0-21swapper/111:16:361
81580rcu_preempt0-21swapper/111:10:161
81580rcu_preempt0-21swapper/111:07:061
81580rcu_preempt0-21swapper/110:57:121
81580rcu_preempt0-21swapper/110:25:111
81580rcu_preempt0-21swapper/109:54:551
81580rcu_preempt0-21swapper/109:25:281
81580rcu_preempt0-21swapper/109:11:551
81580rcu_preempt0-21swapper/108:20:131
81580rcu_preempt0-21swapper/012:09:180
81580rcu_preempt0-21swapper/012:03:340
81580rcu_preempt0-21swapper/011:27:230
81580rcu_preempt0-21swapper/011:13:300
81580rcu_preempt0-21swapper/009:37:270
81570rcu_preempt27864-21ssh10:51:210
81570rcu_preempt26975-1kworker/0:1H11:54:460
81570rcu_preempt15818-21ssh11:28:411
81570rcu_preempt15745-21ssh09:33:251
81570rcu_preempt0-21swapper/112:15:131
81570rcu_preempt0-21swapper/112:10:341
81570rcu_preempt0-21swapper/112:01:511
81570rcu_preempt0-21swapper/110:41:351
81570rcu_preempt0-21swapper/110:05:151
81570rcu_preempt0-21swapper/109:53:261
81570rcu_preempt0-21swapper/109:45:421
81570rcu_preempt0-21swapper/109:38:341
81570rcu_preempt0-21swapper/108:50:041
81570rcu_preempt0-21swapper/108:05:051
81570rcu_preempt0-21swapper/107:25:051
81570rcu_preempt0-21swapper/010:44:350
81570rcu_preempt0-21swapper/009:21:350
81560rcu_preempt9525-21ssh09:21:351
81560rcu_preempt4517-21ssh10:10:140
81560rcu_preempt3-21ksoftirqd/012:18:190
81560rcu_preempt18108-21ssh12:30:551
81560rcu_preempt12408-21ps07:40:170
81560rcu_preempt0-21swapper/111:52:211
81560rcu_preempt0-21swapper/110:50:101
81560rcu_preempt0-21swapper/110:36:181
81560rcu_preempt0-21swapper/108:58:511
81560rcu_preempt0-21swapper/108:27:291
81560rcu_preempt0-21swapper/108:18:561
81560rcu_preempt0-21swapper/107:30:081
81560rcu_preempt0-21swapper/010:32:470
81560rcu_preempt0-21swapper/010:07:290
81560rcu_preempt0-21swapper/009:41:130
81550rcu_preempt5825-21ssh10:12:541
81550rcu_preempt27807-21ssh09:54:590
81550rcu_preempt21492-21ssh11:39:081
81550rcu_preempt10747-21ssh09:25:020
81550rcu_preempt0-21swapper/109:39:541
81550rcu_preempt0-21swapper/109:08:001
81550rcu_preempt0-21swapper/109:00:271
81550rcu_preempt0-21swapper/108:48:271
81550rcu_preempt0-21swapper/108:11:331
81550rcu_preempt0-21swapper/011:14:580
81550rcu_preempt0-21swapper/010:36:380
81550rcu_preempt0-21swapper/010:03:540
81550rcu_preempt0-21swapper/008:35:110
81540rcu_preempt30401-21sshd08:51:290
81540rcu_preempt0-21swapper/107:58:001
81540rcu_preempt0-21swapper/011:40:460
81540rcu_preempt0-21swapper/009:09:550
81540rcu_preempt0-21swapper/008:41:350
81540rcu_preempt0-21swapper/007:50:070
81540rcu_preempt0-21swapper/007:32:400
81540rcu_preempt0-21swapper/007:18:400
81530rcu_preempt16516-21sshd07:58:290
81530rcu_preempt0-21swapper/008:31:480
81520rcu_preempt0-21swapper/008:09:360
81510rcu_preempt17414-21ntp_states08:00:131
81510rcu_preempt0-21swapper/107:54:341
81510rcu_preempt0-21swapper/007:13:160
3869995148cyclictest946-21usb-storage08:30:071
81500rcu_preempt1399-21ntpq09:05:130
81500rcu_preempt0-21swapper/008:01:290
81500rcu_preempt0-21swapper/007:25:110
3869994946cyclictest946-21usb-storage07:48:061
3868994947cyclictest946-21usb-storage08:55:040
3868994945cyclictest946-21usb-storage07:20:050
81470rcu_preempt13093-21diskstats07:45:080
3869994744cyclictest946-21usb-storage07:20:031
3869994542cyclictest946-21usb-storage08:41:541
3868994441cyclictest946-21usb-storage09:04:050
3869994341cyclictest181ktimersoftd/108:36:201
151950360irq/31-eth0-tx-2920-21kworker/1:007:19:471
151950350irq/31-eth0-tx-2920-21kworker/1:007:10:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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