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2025-11-23 - 13:32
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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 Nov 23, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt0-21swapper/119:05:201
81740rcu_preempt7158-21munin-run21:39:521
81730rcu_preempt2529-21df_abs00:35:071
81730rcu_preempt0-21swapper/021:41:530
81720rcu_preempt1699migration/120:35:151
81710rcu_preempt27212-21missed_timers00:20:151
81690rcu_preempt29402-21df00:25:070
81690rcu_preempt11029-21cat21:45:191
81690rcu_preempt0-21swapper/120:10:071
81690rcu_preempt0-21swapper/023:40:170
81680rcu_preempt0-21swapper/121:55:061
81680rcu_preempt0-21swapper/120:55:151
81680rcu_preempt0-21swapper/119:25:171
81680rcu_preempt0-21swapper/023:24:570
81670rcu_preempt13320-21sh21:50:131
81670rcu_preempt0-21swapper/123:29:111
81670rcu_preempt0-21swapper/120:15:121
81670rcu_preempt0-21swapper/019:26:250
81660rcu_preempt5543-21sh23:38:080
81660rcu_preempt21920-21apt-get21:05:051
81660rcu_preempt14584-21ssh22:54:171
81660rcu_preempt0-21swapper/123:30:481
81660rcu_preempt0-21swapper/100:12:091
81650rcu_preempt10982-1kworker/1:1H23:53:371
81650rcu_preempt1090-21ntp_states19:40:161
81650rcu_preempt0-21swapper/123:22:431
81650rcu_preempt0-21swapper/119:46:411
81650rcu_preempt0-21swapper/100:03:411
81650rcu_preempt0-21swapper/000:35:310
81640rcu_preempt3-21ksoftirqd/023:08:360
81640rcu_preempt29019-21cpuspeed_turbos21:20:061
81640rcu_preempt0-21swapper/121:18:291
81640rcu_preempt0-21swapper/100:08:111
81640rcu_preempt0-21swapper/022:36:150
81640rcu_preempt0-21swapper/022:08:000
81640rcu_preempt0-21swapper/021:56:040
81640rcu_preempt0-21swapper/021:17:050
81630rcu_preempt23052-21diskmemload22:00:031
81630rcu_preempt10449-21ssh23:46:551
81630rcu_preempt0-21swapper/122:19:301
81630rcu_preempt0-21swapper/019:06:210
81620rcu_preempt3686-21egrep23:35:041
81620rcu_preempt29715-21ssh23:22:140
81620rcu_preempt0-21swapper/122:37:081
81620rcu_preempt0-21swapper/100:27:111
81620rcu_preempt0-21swapper/022:34:310
81610rcu_preempt9430-21ssh21:43:391
81610rcu_preempt7681-21ssh23:41:361
81610rcu_preempt19240-21cron20:54:520
81610rcu_preempt15447-21ssh22:55:110
81610rcu_preempt0-21swapper/121:29:121
81610rcu_preempt0-21swapper/121:04:481
81610rcu_preempt0-21swapper/121:04:481
81610rcu_preempt0-21swapper/022:25:140
81610rcu_preempt0-21swapper/022:25:140
81610rcu_preempt0-21swapper/021:35:130
81600rcu_preempt704-21ssh00:30:251
81600rcu_preempt2769-1kworker/0:2H23:34:110
81600rcu_preempt25841-21ssh22:14:441
81600rcu_preempt0-21swapper/122:34:331
81600rcu_preempt0-21swapper/119:55:271
81600rcu_preempt0-21swapper/023:59:360
81590rcu_preempt22331-21ssh22:07:151
81590rcu_preempt0-21swapper/123:01:201
81590rcu_preempt0-21swapper/122:46:591
81590rcu_preempt0-21swapper/122:43:131
81590rcu_preempt0-21swapper/122:21:301
81590rcu_preempt0-21swapper/121:33:421
81590rcu_preempt0-21swapper/100:16:191
81590rcu_preempt0-21swapper/019:40:100
81590rcu_preempt0-21swapper/000:30:140
81580rcu_preempt3-21ksoftirqd/022:19:070
81580rcu_preempt24941-21ssh23:13:440
81580rcu_preempt24062-21ssh23:10:271
81580rcu_preempt12430-21cpuspeed_turbos22:50:080
81580rcu_preempt0-21swapper/122:25:561
81580rcu_preempt0-21swapper/122:25:561
81580rcu_preempt0-21swapper/120:30:111
81580rcu_preempt0-21swapper/021:54:340
81580rcu_preempt0-21swapper/021:20:470
81570rcu_preempt30754-21ssh22:23:330
81570rcu_preempt26729-21ssh23:15:411
81570rcu_preempt2235-21snmpd21:11:461
81570rcu_preempt21054-21mailstats23:05:151
81570rcu_preempt17999-21munin-run20:49:520
81570rcu_preempt15504-21irqstats22:55:111
81570rcu_preempt0-21swapper/120:50:061
81570rcu_preempt0-21swapper/000:23:540
81570rcu_preempt0-21swapper/000:17:010
81560rcu_preempt6580-21cron20:04:511
81560rcu_preempt19603-21ssh22:01:400
81560rcu_preempt14151-21munin-run20:34:520
81560rcu_preempt0-21swapper/120:49:411
81560rcu_preempt0-21swapper/119:31:401
81560rcu_preempt0-21swapper/023:19:190
81560rcu_preempt0-21swapper/022:44:450
81560rcu_preempt0-21swapper/022:10:090
81560rcu_preempt0-21swapper/020:25:210
81560rcu_preempt0-21swapper/020:22:090
81560rcu_preempt0-21swapper/019:50:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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