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2025-09-19 - 08:01
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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 Fri Sep 19, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81850rcu_preempt0-21swapper/021:18:150
81840rcu_preempt18359-21ssh23:18:550
81800rcu_preempt0-21swapper/119:08:591
81750rcu_preempt18448-21diskmemload22:04:030
81740rcu_preempt28201-21idleruntime22:34:021
81740rcu_preempt28201-21idleruntime22:34:021
81730rcu_preempt26169-21df_inode23:33:580
81730rcu_preempt2552-21ssh23:49:490
81730rcu_preempt13045-21sh00:11:240
81730rcu_preempt13045-21sh00:11:240
81710rcu_preempt0-21swapper/022:39:120
81700rcu_preempt21110-21apt-get00:28:571
81700rcu_preempt0-21swapper/100:24:061
81700rcu_preempt0-21swapper/021:28:070
81700rcu_preempt0-21swapper/000:41:140
81690rcu_preempt0-21swapper/123:33:121
81690rcu_preempt0-21swapper/100:02:411
81690rcu_preempt0-21swapper/022:58:430
81690rcu_preempt0-21swapper/022:13:080
81690rcu_preempt0-21swapper/019:49:050
81690rcu_preempt0-21swapper/000:26:070
81680rcu_preempt30726-21ssh21:35:150
81680rcu_preempt23744-21sh21:23:141
81680rcu_preempt1300-21latency19:59:041
81680rcu_preempt0-21swapper/121:53:431
81680rcu_preempt0-21swapper/121:37:131
81680rcu_preempt0-21swapper/100:08:141
81670rcu_preempt0-21swapper/122:58:221
81670rcu_preempt0-21swapper/021:21:060
81670rcu_preempt0-21swapper/000:30:440
81660rcu_preempt26920-21wc23:34:111
81660rcu_preempt11577-21ntpq20:39:090
81650rcu_preempt1132-21ssh22:44:030
81650rcu_preempt0-21swapper/122:39:281
81650rcu_preempt0-21swapper/022:23:560
81650rcu_preempt0-21swapper/019:10:450
81640rcu_preempt339-21tail19:54:060
81640rcu_preempt0-21swapper/122:06:081
81640rcu_preempt0-21swapper/120:39:111
81640rcu_preempt0-21swapper/021:53:550
81630rcu_preempt30784-21cpuspeed_turbos19:48:581
81630rcu_preempt28176-21ssh00:42:421
81630rcu_preempt25315-21ssh23:32:000
81630rcu_preempt20358-21df_inode22:18:580
81630rcu_preempt20087-21ssh21:15:091
81630rcu_preempt16038-21entropy23:14:001
81630rcu_preempt13253-21munin-run20:48:410
81630rcu_preempt0-21swapper/119:40:201
81630rcu_preempt0-21swapper/119:13:561
81630rcu_preempt0-21swapper/023:39:080
81620rcu_preempt382-21ssh23:46:251
81620rcu_preempt14630-21k10sensors00:14:090
81620rcu_preempt0-21swapper/022:37:340
81620rcu_preempt0-21swapper/022:37:340
81610rcu_preempt896-21sh22:44:001
81610rcu_preempt644-21ssh23:47:220
81610rcu_preempt3-21ksoftirqd/022:57:020
81610rcu_preempt3-21ksoftirqd/000:22:180
81610rcu_preempt26515-21ssh22:29:141
81610rcu_preempt25985-21ssh21:26:381
81610rcu_preempt24803-21sh22:27:211
81610rcu_preempt0-21swapper/123:53:421
81610rcu_preempt0-21swapper/123:26:501
81610rcu_preempt0-21swapper/123:23:021
81610rcu_preempt0-21swapper/123:11:461
81610rcu_preempt0-21swapper/122:59:001
81610rcu_preempt0-21swapper/121:52:141
81610rcu_preempt0-21swapper/121:40:321
81610rcu_preempt0-21swapper/100:20:061
81600rcu_preempt5131-21load20:14:031
81600rcu_preempt3-21ksoftirqd/023:04:110
81600rcu_preempt14604-21latency_hist20:53:421
81600rcu_preempt0-21swapper/100:14:051
81600rcu_preempt0-21swapper/021:40:330
81600rcu_preempt0-21swapper/020:13:570
81590rcu_preempt19-21ksoftirqd/122:23:171
81590rcu_preempt16988-21python21:04:021
81590rcu_preempt0-21swapper/122:49:061
81590rcu_preempt0-21swapper/122:09:471
81590rcu_preempt0-21swapper/121:29:011
81590rcu_preempt0-21swapper/121:09:041
81590rcu_preempt0-21swapper/120:44:111
81590rcu_preempt0-21swapper/120:34:071
81590rcu_preempt0-21swapper/120:29:041
81590rcu_preempt0-21swapper/100:11:501
81590rcu_preempt0-21swapper/100:11:501
81590rcu_preempt0-21swapper/022:29:080
81580rcu_preempt7698-21ssh00:00:300
81580rcu_preempt5609-21ssh23:57:110
81580rcu_preempt2982-21python20:04:101
81580rcu_preempt19478-21ssh22:17:120
81580rcu_preempt18448-21diskmemload00:34:530
81580rcu_preempt15391-21ssh23:13:020
81580rcu_preempt0-21swapper/123:04:281
81580rcu_preempt0-21swapper/121:47:091
81580rcu_preempt0-21swapper/120:24:021
81580rcu_preempt0-21swapper/119:24:071
81580rcu_preempt0-21swapper/100:33:591
81580rcu_preempt0-21swapper/021:49:000
81580rcu_preempt0-21swapper/019:34:070
81570rcu_preempt9545-21ssh00:04:070
81570rcu_preempt4738-21ssh22:51:000
81570rcu_preempt0-21swapper/122:01:121
81570rcu_preempt0-21swapper/119:55:141
81570rcu_preempt0-21swapper/023:25:450
81560rcu_preempt29932-21ssh23:40:151
81560rcu_preempt2963-21ssh23:51:281
81560rcu_preempt26726-21ssh21:28:490
81560rcu_preempt0-21swapper/122:13:541
81560rcu_preempt0-21swapper/023:15:570
81560rcu_preempt0-21swapper/021:46:590
81560rcu_preempt0-21swapper/019:28:230
81550rcu_preempt22939-21cron19:18:410
81550rcu_preempt12049-21ssh22:03:020
81550rcu_preempt0-21swapper/119:28:541
81550rcu_preempt0-21swapper/119:18:571
81540rcu_preempt0-21swapper/120:52:241
81540rcu_preempt0-21swapper/120:21:211
81540rcu_preempt0-21swapper/120:11:111
81540rcu_preempt0-21swapper/019:59:390
81530rcu_preempt2224-21snmpd20:51:080
81530rcu_preempt0-21swapper/020:33:560
81530rcu_preempt0-21swapper/019:44:040
81530rcu_preempt0-21swapper/019:30:000
81520rcu_preempt17569-21diskstats21:08:580
81520rcu_preempt0-21swapper/119:43:451
81520rcu_preempt0-21swapper/119:35:291
81520rcu_preempt0-21swapper/019:40:030
81510rcu_preempt16787-21ntp_states21:03:590
81510rcu_preempt0-21swapper/020:24:420
81490rcu_preempt23153-21cat19:18:560
141250480irq/30-eth0-tx-0-21swapper/020:05:590
81470rcu_preempt15601-21sed20:54:090
141350450irq/31-eth0-tx-3860-21ls20:09:050
89950380irq/17-ehci_hcd945-21usb-storage20:59:450
81370rcu_preempt5965-21df20:18:550
81370rcu_preempt2224-21snmpd20:31:040
141350370irq/31-eth0-tx-8629-21kworker/1:021:03:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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