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2026-05-17 - 14:02
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Sun May 17, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt32073-21basename23:36:460
81740rcu_preempt31644-21sed20:01:471
81730rcu_preempt10964-21ssh21:58:350
81730rcu_preempt0-21swapper/123:57:171
81720rcu_preempt0-21swapper/100:16:451
81710rcu_preempt30133-21ssh22:33:220
81710rcu_preempt0-21swapper/022:26:530
81710rcu_preempt0-21swapper/022:12:390
81700rcu_preempt4910-21users20:21:540
81700rcu_preempt2105-21/usr/sbin/munin20:11:501
81700rcu_preempt13235-1kworker/1:2H22:43:191
81700rcu_preempt0-21swapper/122:31:511
81700rcu_preempt0-21swapper/023:55:480
81700rcu_preempt0-21swapper/022:23:250
81700rcu_preempt0-21swapper/020:51:510
81700rcu_preempt0-21swapper/000:15:170
81690rcu_preempt19643-21sh23:12:580
81690rcu_preempt19170-21sh21:16:010
81690rcu_preempt0-21swapper/122:26:561
81680rcu_preempt6211-21munin-run20:31:280
81680rcu_preempt0-21swapper/123:36:571
81680rcu_preempt0-21swapper/123:32:091
81680rcu_preempt0-21swapper/121:51:511
81680rcu_preempt0-21swapper/100:27:001
81680rcu_preempt0-21swapper/022:54:220
81670rcu_preempt3836-21ssh23:43:420
81670rcu_preempt0-21swapper/123:29:391
81670rcu_preempt0-21swapper/121:38:571
81670rcu_preempt0-21swapper/120:17:491
81660rcu_preempt30250-21ssh00:32:310
81660rcu_preempt3-21ksoftirqd/023:09:330
81660rcu_preempt20273-21sh23:15:131
81660rcu_preempt16357-21diskmemload23:29:110
81660rcu_preempt13029-21ssh00:01:400
81660rcu_preempt0-21swapper/121:17:111
81660rcu_preempt0-21swapper/121:14:511
81660rcu_preempt0-21swapper/021:26:440
81650rcu_preempt24835-21egrep19:36:411
81650rcu_preempt1445-21idleruntime-cro22:41:281
81650rcu_preempt0-21swapper/121:35:271
81640rcu_preempt1811-21munin-run00:41:280
81640rcu_preempt0-21swapper/122:22:481
81630rcu_preempt5917-21ssh22:48:121
81630rcu_preempt4725-21ssh22:46:450
81630rcu_preempt1521-21ssh21:41:470
81630rcu_preempt0-21swapper/120:56:281
81630rcu_preempt0-21swapper/120:36:401
81630rcu_preempt0-21swapper/100:32:571
81630rcu_preempt0-21swapper/021:48:210
81620rcu_preempt2885-21if_can120:16:440
81620rcu_preempt19710-21ssh00:13:581
81620rcu_preempt15750-21processes22:06:521
81620rcu_preempt15459-21df_abs21:06:441
81620rcu_preempt15264-21ls23:06:290
81620rcu_preempt0-21swapper/123:06:431
81620rcu_preempt0-21swapper/121:46:521
81620rcu_preempt0-21swapper/121:27:561
81620rcu_preempt0-21swapper/121:25:461
81620rcu_preempt0-21swapper/023:47:310
146250620irq/28-eth0-rx-41ktimersoftd/023:17:310
81610rcu_preempt896-21ssh00:38:401
81610rcu_preempt26977-21/usr/sbin/munin00:26:530
81610rcu_preempt15201-21ssh00:05:331
81610rcu_preempt0-21swapper/123:04:381
81610rcu_preempt0-21swapper/122:11:541
81610rcu_preempt0-21swapper/120:06:521
81610rcu_preempt0-21swapper/119:41:461
81610rcu_preempt0-21swapper/119:31:581
81610rcu_preempt0-21swapper/119:10:211
81610rcu_preempt0-21swapper/000:19:570
81600rcu_preempt3-21ksoftirqd/022:10:170
81600rcu_preempt17092-21kworker/0:219:06:400
81600rcu_preempt16357-21diskmemload22:06:070
81600rcu_preempt16357-21diskmemload21:56:481
81600rcu_preempt0-21swapper/123:17:021
81600rcu_preempt0-21swapper/120:21:461
81600rcu_preempt0-21swapper/119:26:541
81600rcu_preempt0-21swapper/100:23:221
81600rcu_preempt0-21swapper/100:07:241
81600rcu_preempt0-21swapper/021:06:530
81600rcu_preempt0-21swapper/021:01:530
81600rcu_preempt0-21swapper/000:22:040
81590rcu_preempt29994-21ssh21:34:410
81590rcu_preempt16357-21diskmemload22:18:320
81590rcu_preempt10041-21cron20:46:270
81590rcu_preempt0-21swapper/123:21:281
81590rcu_preempt0-21swapper/122:01:451
81590rcu_preempt0-21swapper/121:41:501
81590rcu_preempt0-21swapper/120:41:441
81590rcu_preempt0-21swapper/119:46:541
81590rcu_preempt0-21swapper/022:41:540
81580rcu_preempt9085-21munin-run21:56:280
81580rcu_preempt820-21ssh22:39:340
81580rcu_preempt32133-21ssh21:37:310
81580rcu_preempt24714-21ssh21:26:010
81580rcu_preempt19489-21sh21:16:320
81580rcu_preempt0-21swapper/123:55:021
81580rcu_preempt0-21swapper/123:47:401
81580rcu_preempt0-21swapper/123:46:051
81580rcu_preempt0-21swapper/120:50:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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