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2026-06-27 - 17:51
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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 Sat Jun 27, 2026 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81860rcu_preempt0-21swapper/011:21:060
81790rcu_preempt9830-21ssh12:28:480
81750rcu_preempt19-21ksoftirqd/111:09:541
81740rcu_preempt0-21swapper/111:27:221
81730rcu_preempt0-21swapper/112:01:201
81730rcu_preempt0-21swapper/109:29:451
81720rcu_preempt32006-21ssh10:01:511
81720rcu_preempt19691-21munin-run09:39:571
81720rcu_preempt0-21swapper/107:15:141
81720rcu_preempt0-21swapper/008:25:160
81710rcu_preempt6924-21rm12:22:251
81710rcu_preempt0-21swapper/111:53:131
81710rcu_preempt0-21swapper/111:47:551
81710rcu_preempt0-21swapper/009:20:120
81710rcu_preempt0-21swapper/007:30:200
81700rcu_preempt9262-21if_eth110:20:171
81700rcu_preempt23833-21sh10:47:040
81700rcu_preempt19372-21munin-run07:59:571
81700rcu_preempt10715-21ssh10:23:020
81700rcu_preempt0-21swapper/111:00:121
81700rcu_preempt0-21swapper/111:00:121
81700rcu_preempt0-21swapper/109:15:061
81700rcu_preempt0-21swapper/107:35:341
81700rcu_preempt0-21swapper/010:38:070
81700rcu_preempt0-21swapper/009:49:580
81700rcu_preempt0-21swapper/008:35:240
81690rcu_preempt6322-21df_abs10:15:121
81690rcu_preempt2829-21sed09:00:171
81690rcu_preempt21642-21ssh10:43:370
81690rcu_preempt0-21swapper/112:30:571
81670rcu_preempt19-21ksoftirqd/110:12:141
81670rcu_preempt17679-21munin-run11:39:580
81670rcu_preempt11408-21ps07:25:210
146250660irq/28-eth0-rx-7072-21fw_conntrack07:10:121
81650rcu_preempt4073-21switchtime11:10:250
81650rcu_preempt24364-21sed08:15:241
81650rcu_preempt19-21ksoftirqd/110:56:151
81650rcu_preempt13409-21http_loadtime11:30:171
81650rcu_preempt0-21swapper/111:19:251
81650rcu_preempt0-21swapper/110:43:111
81650rcu_preempt0-21swapper/012:02:220
81650rcu_preempt0-21swapper/010:32:110
81640rcu_preempt7675-21mailstats07:10:200
81640rcu_preempt19-21ksoftirqd/112:40:171
81640rcu_preempt19-21ksoftirqd/111:11:511
81640rcu_preempt0-21swapper/008:55:250
146550640irq/30-eth0-tx-0-21swapper/011:55:030
89550630irq/17-ehci_hcd0-21swapper/009:52:130
81630rcu_preempt32178-21ssh12:09:250
81630rcu_preempt1856-21sh11:06:340
81630rcu_preempt0-21swapper/110:52:151
81630rcu_preempt0-21swapper/109:10:111
81630rcu_preempt0-21swapper/011:41:440
81630rcu_preempt0-21swapper/010:55:160
81630rcu_preempt0-21swapper/009:32:220
81620rcu_preempt0-21swapper/009:41:570
81620rcu_preempt0-21swapper/008:45:240
81610rcu_preempt8687-21ssh09:19:400
81610rcu_preempt3797-21/usr/sbin/munin09:05:120
81610rcu_preempt12476-21ssh09:25:200
89950600irq/17-ehci_hcd945-21usb-storage10:28:321
81600rcu_preempt30237-21ssh09:59:380
81600rcu_preempt2676-21ssh12:15:040
81600rcu_preempt10680-21ssh12:30:170
81600rcu_preempt0-21swapper/012:23:060
81600rcu_preempt0-21swapper/010:15:210
81590rcu_preempt19-21ksoftirqd/109:22:421
81590rcu_preempt0-21swapper/010:52:220
81590rcu_preempt0-21swapper/007:20:150
7965995945cyclictest945-21usb-storage08:10:481
81580rcu_preempt0-21swapper/009:39:090
7965995848cyclictest945-21usb-storage07:20:451
146650580irq/31-eth0-tx-0-21swapper/110:46:041
89150570irq/17-ehci_hcd18349-21ssh11:40:171
81570rcu_preempt19-21ksoftirqd/109:45:051
81570rcu_preempt15239-21ssh12:39:120
81570rcu_preempt15239-21ssh12:39:120
81570rcu_preempt0-21swapper/011:48:050
81570rcu_preempt0-21swapper/011:31:010
81560rcu_preempt19-21ksoftirqd/110:33:071
81560rcu_preempt17564-21ssh12:43:220
81560rcu_preempt0-21swapper/011:16:380
81560rcu_preempt0-21swapper/010:05:010
81560rcu_preempt0-21swapper/010:04:570
81560rcu_preempt0-21swapper/008:05:190
81550rcu_preempt8800-21ntpdc07:15:210
81550rcu_preempt22739-21diskstats11:50:140
81550rcu_preempt0-21swapper/010:25:140
81540rcu_preempt0-21swapper/012:11:050
81540rcu_preempt0-21swapper/011:28:530
81540rcu_preempt0-21swapper/011:01:510
81540rcu_preempt0-21swapper/011:01:510
81540rcu_preempt0-21swapper/010:10:590
81540rcu_preempt0-21swapper/007:45:570
7965995449cyclictest945-21usb-storage08:21:291
146250540irq/28-eth0-rx-945-21usb-storage08:53:520
81530rcu_preempt2269-21/usr/sbin/munin09:00:190
81530rcu_preempt19-21ksoftirqd/112:09:581
81530rcu_preempt19-21ksoftirqd/109:43:431
81530rcu_preempt13417-21fw_forwarded_lo07:35:140
81530rcu_preempt0-21swapper/008:31:010
7965995350cyclictest945-21usb-storage08:01:281
7965995350cyclictest945-21usb-storage08:01:281
7965995348cyclictest945-21usb-storage09:05:001
7965995348cyclictest945-21usb-storage07:50:331
7965995348cyclictest945-21usb-storage07:46:481
7965995348cyclictest945-21usb-storage07:43:131
7965995348cyclictest945-21usb-storage07:27:551
7965995344cyclictest945-21usb-storage07:31:081
81520rcu_preempt0-21swapper/008:18:420
81520rcu_preempt0-21swapper/008:10:150
81520rcu_preempt0-21swapper/007:42:550
7965995249cyclictest945-21usb-storage08:51:371
7965995249cyclictest945-21usb-storage08:42:161
7965995249cyclictest12786-21kworker/1:212:14:581
7965995248cyclictest945-21usb-storage08:56:241
7965995248cyclictest945-21usb-storage08:47:031
7965995248cyclictest945-21usb-storage08:35:341
7965995248cyclictest945-21usb-storage08:30:051
7965995248cyclictest945-21usb-storage08:25:321
7965995248cyclictest945-21usb-storage08:06:071
81510rcu_preempt20431-21python08:00:230
81510rcu_preempt20431-21python08:00:230
81510rcu_preempt19-21ksoftirqd/112:36:261
81510rcu_preempt19-21ksoftirqd/112:36:261
81510rcu_preempt19-21ksoftirqd/111:35:171
81510rcu_preempt19-21ksoftirqd/111:21:331
81510rcu_preempt19-21ksoftirqd/109:30:131
81510rcu_preempt0-21swapper/008:40:420
81510rcu_preempt0-21swapper/007:56:340
81510rcu_preempt0-21swapper/007:52:480
81500rcu_preempt19-21ksoftirqd/112:25:211
81500rcu_preempt19-21ksoftirqd/110:36:041
146650500irq/31-eth0-tx-0-21swapper/110:07:051
81490rcu_preempt19-21ksoftirqd/112:16:331
81490rcu_preempt19-21ksoftirqd/109:55:221
81490rcu_preempt0-21swapper/009:14:290
146650490irq/31-eth0-tx-0-21swapper/111:56:371
81480rcu_preempt0-21swapper/008:20:110
7965994743cyclictest812-21scsi_eh_009:50:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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