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2025-12-25 - 03:54
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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 Thu Dec 25, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920rcu_preempt28724-21diskmemload21:40:471
81800rcu_preempt8117-21ssh21:29:470
81790rcu_preempt8378-21/usr/sbin/munin21:30:291
81720rcu_preempt8270-21ssh00:10:530
81720rcu_preempt0-21swapper/119:06:281
81690rcu_preempt0-21swapper/021:05:430
81670rcu_preempt4411-21/usr/sbin/munin00:05:290
81670rcu_preempt31758-21ntp_states23:55:520
81670rcu_preempt0-21swapper/122:17:001
89850660irq/17-ehci_hcd945-21usb-storage22:59:580
89850660irq/17-ehci_hcd945-21usb-storage21:12:191
81660rcu_preempt24420-21sh00:38:440
81660rcu_preempt0-21swapper/023:09:020
81650rcu_preempt20128-21ssh21:49:541
81650rcu_preempt0-21swapper/123:49:421
81650rcu_preempt0-21swapper/122:41:351
81650rcu_preempt0-21swapper/021:49:550
81640rcu_preempt28724-21diskmemload23:52:170
81630rcu_preempt6629-1kworker/0:1H23:44:380
81630rcu_preempt26007-21switchtime20:55:540
81630rcu_preempt15107-21ssh23:28:471
81630rcu_preempt11919-21ssh21:35:470
81630rcu_preempt1137-21ssh23:59:541
81630rcu_preempt0-21swapper/123:40:561
81630rcu_preempt0-21swapper/122:23:081
81630rcu_preempt0-21swapper/100:34:581
81630rcu_preempt0-21swapper/020:40:480
81630rcu_preempt0-21swapper/019:35:540
81620rcu_preempt2304-21ssh22:13:381
81620rcu_preempt0-21swapper/122:54:231
81620rcu_preempt0-21swapper/122:31:081
81620rcu_preempt0-21swapper/122:28:021
81620rcu_preempt0-21swapper/121:00:541
81620rcu_preempt0-21swapper/023:46:020
81620rcu_preempt0-21swapper/019:56:050
81610rcu_preempt3868-21ssh21:21:131
81610rcu_preempt32085-21ssh22:09:471
81610rcu_preempt3-21ksoftirqd/023:23:330
81610rcu_preempt29361-21munin-run22:05:290
81610rcu_preempt20473-21ssh22:44:000
81610rcu_preempt16584-21ssh22:36:311
81610rcu_preempt12114-21ssh00:17:281
81610rcu_preempt0-21swapper/019:45:500
81610rcu_preempt0-21swapper/019:30:470
81610rcu_preempt0-21swapper/019:10:500
81600rcu_preempt24082-21ssh00:37:461
81600rcu_preempt0-21swapper/123:09:141
81600rcu_preempt0-21swapper/122:46:441
81600rcu_preempt0-21swapper/121:55:581
81600rcu_preempt0-21swapper/121:16:591
81600rcu_preempt0-21swapper/100:28:131
81600rcu_preempt0-21swapper/100:10:261
81600rcu_preempt0-21swapper/022:30:450
81600rcu_preempt0-21swapper/021:10:520
89850590irq/17-ehci_hcd945-21usb-storage22:14:470
81590rcu_preempt6362-21ssh23:14:321
81590rcu_preempt32331-21df_abs19:15:430
81590rcu_preempt19834-21rt-features23:35:540
81590rcu_preempt12204-21ssh23:24:011
81590rcu_preempt0-21swapper/123:31:331
81590rcu_preempt0-21swapper/122:59:351
81590rcu_preempt0-21swapper/122:02:011
81590rcu_preempt0-21swapper/120:55:431
81590rcu_preempt0-21swapper/023:33:550
81590rcu_preempt0-21swapper/023:15:560
81590rcu_preempt0-21swapper/022:55:170
81590rcu_preempt0-21swapper/022:07:300
81590rcu_preempt0-21swapper/000:18:350
81580rcu_preempt4503-21latency23:10:490
81580rcu_preempt30565-21df_inode23:00:451
81580rcu_preempt30528-21df_abs23:00:440
81580rcu_preempt23239-21ssh22:48:120
81580rcu_preempt21818-21ssh21:51:041
81580rcu_preempt0-21swapper/123:51:231
81580rcu_preempt0-21swapper/123:38:491
81580rcu_preempt0-21swapper/123:16:051
81580rcu_preempt0-21swapper/121:35:481
81580rcu_preempt0-21swapper/121:31:501
81580rcu_preempt0-21swapper/120:45:551
81580rcu_preempt0-21swapper/120:25:481
81580rcu_preempt0-21swapper/119:55:391
81580rcu_preempt0-21swapper/119:40:541
81580rcu_preempt0-21swapper/100:05:161
81580rcu_preempt0-21swapper/021:50:580
81570rcu_preempt9134-21ssh00:12:221
81570rcu_preempt15118-21ssh00:22:341
81570rcu_preempt0-21swapper/121:07:421
81570rcu_preempt0-21swapper/120:33:291
81570rcu_preempt0-21swapper/120:15:511
81570rcu_preempt0-21swapper/021:31:460
81570rcu_preempt0-21swapper/021:02:300
81570rcu_preempt0-21swapper/020:45:510
81570rcu_preempt0-21swapper/020:05:550
147950570irq/31-eth0-tx-41ktimersoftd/021:17:570
89050560irq/17-ehci_hcd945-21usb-storage21:41:440
81560rcu_preempt9592-21ssh22:25:460
81560rcu_preempt3411-21sshd19:28:541
81560rcu_preempt16689-21ssh22:36:490
81560rcu_preempt0-21swapper/022:25:010
81560rcu_preempt0-21swapper/000:25:500
81550rcu_preempt20526-21ssh00:31:100
81550rcu_preempt18004-21kworker/0:019:05:530
81550rcu_preempt12650-21diskstats20:05:461
81550rcu_preempt0-21swapper/119:38:311
81550rcu_preempt0-21swapper/119:34:361
81550rcu_preempt0-21swapper/119:20:481
81550rcu_preempt0-21swapper/023:25:370
81550rcu_preempt0-21swapper/020:38:470
81550rcu_preempt0-21swapper/020:20:180
81540rcu_preempt31801-21python19:10:521
81540rcu_preempt0-21swapper/120:50:581
81540rcu_preempt0-21swapper/022:17:410
81540rcu_preempt0-21swapper/022:00:280
81540rcu_preempt0-21swapper/021:23:210
81540rcu_preempt0-21swapper/020:22:260
81540rcu_preempt0-21swapper/019:44:390
81540rcu_preempt0-21swapper/019:20:540
81540rcu_preempt0-21swapper/000:24:210
81540rcu_preempt0-21swapper/000:05:350
81530rcu_preempt19635-21python20:30:550
81530rcu_preempt0-21swapper/120:40:481
81530rcu_preempt0-21swapper/120:38:471
81530rcu_preempt0-21swapper/020:50:500
81530rcu_preempt0-21swapper/020:15:270
81510rcu_preempt0-21swapper/120:21:481
81510rcu_preempt0-21swapper/020:30:090
81510rcu_preempt0-21swapper/020:02:180
81500rcu_preempt0-21swapper/120:12:471
81490rcu_preempt398-21ntp_states19:15:501
81490rcu_preempt0-21swapper/019:53:360
81470rcu_preempt11872-21ntp_states20:00:531
30755994643cyclictest945-21usb-storage19:50:401
147950380irq/31-eth0-tx-7508-21df_abs19:45:431
89850340irq/17-ehci_hcd0-21swapper/019:26:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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