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2026-06-26 - 13:02
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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 highest latencies:
System rackcslot3.osadl.org (updated Fri Jun 26, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81910rcu_preempt6553-21ssh22:17:281
81890rcu_preempt0-21swapper/023:24:490
81780rcu_preempt9808-21cpuspeed_turbos00:30:051
81760rcu_preempt13062-21ntpq23:30:130
81730rcu_preempt5966-21diskmemload21:15:301
81730rcu_preempt31374-21sh22:04:091
81730rcu_preempt21966-21ssh23:47:031
146250730irq/28-eth0-rx-17820-21apache219:12:361
81720rcu_preempt5501-1kworker/1:0H21:33:071
81710rcu_preempt27193-21ssh23:57:111
81710rcu_preempt0-21swapper/023:55:080
81710rcu_preempt0-21swapper/021:00:030
81710rcu_preempt0-21swapper/020:10:160
81700rcu_preempt9409-21sh00:29:211
81700rcu_preempt459-21sh00:08:230
81700rcu_preempt22507-21ssh21:46:070
81700rcu_preempt13183-21ssh00:35:361
81700rcu_preempt0-21swapper/122:49:251
81700rcu_preempt0-21swapper/122:36:561
81700rcu_preempt0-21swapper/022:45:140
81700rcu_preempt0-21swapper/020:45:080
81690rcu_preempt27777-21sh21:55:280
81690rcu_preempt1631-21sh22:08:480
81690rcu_preempt0-21swapper/121:38:091
81690rcu_preempt0-21swapper/120:20:031
81690rcu_preempt0-21swapper/100:09:361
81680rcu_preempt14643-21sh21:32:100
81680rcu_preempt0-21swapper/123:23:381
81680rcu_preempt0-21swapper/123:12:581
81680rcu_preempt0-21swapper/100:20:061
81680rcu_preempt0-21swapper/000:23:420
81670rcu_preempt19545-21kworker/1:000:02:561
81670rcu_preempt0-21swapper/122:44:321
81670rcu_preempt0-21swapper/121:48:111
81670rcu_preempt0-21swapper/022:02:360
81660rcu_preempt0-21swapper/120:30:151
81660rcu_preempt0-21swapper/120:05:131
81650rcu_preempt14410-21cut19:45:031
81650rcu_preempt0-21swapper/123:25:071
81650rcu_preempt0-21swapper/121:56:211
81640rcu_preempt9548-21ssh21:22:450
81640rcu_preempt7877-21latency_hist19:19:501
81640rcu_preempt19-21ksoftirqd/121:52:421
81640rcu_preempt19-21ksoftirqd/121:41:191
81640rcu_preempt0-21swapper/122:33:541
81640rcu_preempt0-21swapper/122:26:471
81640rcu_preempt0-21swapper/119:38:281
81640rcu_preempt0-21swapper/000:25:060
81630rcu_preempt0-21swapper/122:53:181
81630rcu_preempt0-21swapper/022:20:060
81630rcu_preempt0-21swapper/020:20:420
81630rcu_preempt0-21swapper/019:35:030
81630rcu_preempt0-21swapper/019:14:390
81620rcu_preempt5576-21ps21:15:140
81620rcu_preempt24648-21ssh23:52:231
81620rcu_preempt0-21swapper/100:44:111
81620rcu_preempt0-21swapper/020:05:000
81620rcu_preempt0-21swapper/019:15:070
81620rcu_preempt0-21swapper/000:40:110
81610rcu_preempt17200-21ssh23:39:201
81610rcu_preempt0-21swapper/122:07:081
81610rcu_preempt0-21swapper/121:21:441
81610rcu_preempt0-21swapper/100:15:391
81610rcu_preempt0-21swapper/023:28:590
81600rcu_preempt8925-21ssh22:21:231
81600rcu_preempt3727-21ssh22:11:271
81600rcu_preempt29488-21ntp_states23:00:141
81600rcu_preempt18910-21ssh23:40:501
81600rcu_preempt16676-21ssh23:37:190
81600rcu_preempt0-21swapper/123:08:091
81600rcu_preempt0-21swapper/120:00:071
81600rcu_preempt0-21swapper/023:50:100
81600rcu_preempt0-21swapper/023:45:110
89950590irq/17-ehci_hcd0-21swapper/123:30:101
81590rcu_preempt26315-21ssh22:55:071
81590rcu_preempt1038-21ssh00:09:551
81590rcu_preempt0-21swapper/123:15:161
81590rcu_preempt0-21swapper/121:08:451
81590rcu_preempt0-21swapper/120:55:031
81590rcu_preempt0-21swapper/023:42:200
81590rcu_preempt0-21swapper/022:30:050
89950580irq/17-ehci_hcd945-21usb-storage20:39:581
81580rcu_preempt4527-21diskmemload23:18:340
81580rcu_preempt446-21head20:55:130
81580rcu_preempt21720-21users20:10:161
81580rcu_preempt14485-21munin-run00:39:500
81580rcu_preempt0-21swapper/023:00:180
81580rcu_preempt0-21swapper/022:53:520
81580rcu_preempt0-21swapper/020:50:030
81580rcu_preempt0-21swapper/020:35:070
81580rcu_preempt0-21swapper/019:55:090
81580rcu_preempt0-21swapper/019:40:020
81580rcu_preempt0-21swapper/019:20:130
81580rcu_preempt0-21swapper/000:15:090
81570rcu_preempt26812-21awk20:34:490
81570rcu_preempt2192-21snmpd21:01:471
81570rcu_preempt10934-21if_wlan021:25:091
81570rcu_preempt0-21swapper/120:45:081
81570rcu_preempt0-21swapper/119:52:161
81570rcu_preempt0-21swapper/022:40:140
81570rcu_preempt0-21swapper/022:11:180
81570rcu_preempt0-21swapper/021:37:500
81560rcu_preempt3549-21df21:10:051
81560rcu_preempt26387-21munin-run21:54:510
81560rcu_preempt0-21swapper/120:54:441
81560rcu_preempt0-21swapper/119:23:151
81560rcu_preempt0-21swapper/022:57:110
81560rcu_preempt0-21swapper/022:15:510
81560rcu_preempt0-21swapper/021:43:320
81550rcu_preempt4527-21diskmemload22:29:450
81550rcu_preempt2192-21snmpd20:36:421
81550rcu_preempt0-21swapper/023:07:020
81550rcu_preempt0-21swapper/021:27:420
81550rcu_preempt0-21swapper/021:07:330
81550rcu_preempt0-21swapper/020:40:030
81550rcu_preempt0-21swapper/019:25:020
81540rcu_preempt2192-21snmpd19:31:291
81540rcu_preempt17036-21diskstats19:55:051
81540rcu_preempt0-21swapper/022:38:470
81540rcu_preempt0-21swapper/020:25:060
81540rcu_preempt0-21swapper/019:33:410
81540rcu_preempt0-21swapper/000:10:160
81530rcu_preempt22975-21users20:15:161
81530rcu_preempt13480-21irqstats19:40:101
81530rcu_preempt0-21swapper/020:01:250
81530rcu_preempt0-21swapper/019:45:120
81520rcu_preempt3096-21ssh23:11:220
81520rcu_preempt0-21swapper/021:11:490
81520rcu_preempt0-21swapper/000:32:220
81520rcu_preempt0-21swapper/000:00:080
81510rcu_preempt0-21swapper/020:15:090
146250480irq/28-eth0-rx-0-21swapper/119:26:211
81470rcu_preempt0-21swapper/019:54:010
81460rcu_preempt24696-21fw_conntrack20:25:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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