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2026-06-21 - 04:55
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Sun Jun 21, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt3-21ksoftirqd/000:09:520
81750rcu_preempt15159-21latency_hist19:59:251
81750rcu_preempt0-21swapper/021:56:280
81740rcu_preempt10042-21latency_hist21:29:251
81720rcu_preempt3346-21ssh00:19:400
81720rcu_preempt0-21swapper/000:39:500
81710rcu_preempt27251-21sh00:00:451
81710rcu_preempt2192-21snmpd19:10:451
81710rcu_preempt20094-21ssh22:47:520
81710rcu_preempt0-21swapper/123:29:411
81710rcu_preempt0-21swapper/122:09:501
81710rcu_preempt0-21swapper/120:54:491
81710rcu_preempt0-21swapper/019:25:480
81700rcu_preempt3-21ksoftirqd/000:33:510
81700rcu_preempt29551-21ssh22:04:431
81700rcu_preempt21288-21ntp_states23:49:471
81700rcu_preempt0-21swapper/122:39:501
81700rcu_preempt0-21swapper/122:24:441
81700rcu_preempt0-21swapper/100:39:471
81700rcu_preempt0-21swapper/023:29:390
81700rcu_preempt0-21swapper/023:04:290
81690rcu_preempt2720-21ssh00:17:520
81690rcu_preempt0-21swapper/123:11:561
81690rcu_preempt0-21swapper/123:04:421
81690rcu_preempt0-21swapper/123:00:521
81690rcu_preempt0-21swapper/023:26:460
81680rcu_preempt6528-21diskmemload22:21:540
81680rcu_preempt3365-21ssh22:15:100
81680rcu_preempt27676-21ssh23:01:060
81680rcu_preempt20287-21munin-run23:49:260
81680rcu_preempt1678-21diskmemload23:45:031
81680rcu_preempt0-21swapper/121:19:471
81680rcu_preempt0-21swapper/100:09:521
81670rcu_preempt7650-21apt-esm-hook19:29:371
81670rcu_preempt31532-21sh21:04:250
81670rcu_preempt3-21ksoftirqd/022:10:410
81670rcu_preempt20983-21munin-run21:49:251
81670rcu_preempt0-21swapper/123:21:551
81670rcu_preempt0-21swapper/119:50:531
81670rcu_preempt0-21swapper/119:19:451
81660rcu_preempt26053-21ssh22:59:250
81660rcu_preempt0-21swapper/119:35:501
81650rcu_preempt0-21swapper/022:33:030
81650rcu_preempt0-21swapper/021:32:020
146650650irq/31-eth0-tx-0-21swapper/021:35:140
81640rcu_preempt31155-21rm22:07:420
81640rcu_preempt2828-21fw_conntrack19:09:410
81640rcu_preempt21309-21cpuspeed_turbos21:49:391
81640rcu_preempt18381-21needreboot20:09:451
81640rcu_preempt11077-21cpu00:34:391
81640rcu_preempt0-21swapper/119:58:181
81640rcu_preempt0-21swapper/119:15:011
89950630irq/17-ehci_hcd945-21usb-storage00:33:281
81630rcu_preempt31815-21tr21:04:381
81630rcu_preempt19638-21ssh22:46:121
81630rcu_preempt0-21swapper/122:19:461
81630rcu_preempt0-21swapper/120:34:401
81630rcu_preempt0-21swapper/022:34:510
81630rcu_preempt0-21swapper/020:49:440
81630rcu_preempt0-21swapper/020:39:470
89950620irq/17-ehci_hcd0-21swapper/123:58:341
81620rcu_preempt5609-21ssh00:24:271
81620rcu_preempt2125-21sh23:14:401
81620rcu_preempt0-21swapper/121:54:401
81610rcu_preempt24689-21ssh22:55:001
81610rcu_preempt2295-21ssh00:15:441
81610rcu_preempt1678-21diskmemload22:42:510
81610rcu_preempt12023-21ssh22:32:351
81610rcu_preempt11307-21touch19:44:250
81610rcu_preempt0-21swapper/123:24:511
81610rcu_preempt0-21swapper/122:17:441
81610rcu_preempt0-21swapper/121:39:411
81610rcu_preempt0-21swapper/100:23:481
81610rcu_preempt0-21swapper/020:04:250
89550600irq/17-ehci_hcd4251-21munin-run23:19:250
81600rcu_preempt3527-21ssh21:16:171
81600rcu_preempt30017-21ssh00:06:130
81600rcu_preempt3-21ksoftirqd/019:15:460
81600rcu_preempt0-21swapper/122:50:411
81600rcu_preempt0-21swapper/119:44:421
81600rcu_preempt0-21swapper/021:53:110
81600rcu_preempt0-21swapper/021:09:470
81600rcu_preempt0-21swapper/000:34:550
81590rcu_preempt9713-21ssh21:28:130
81590rcu_preempt9226-21ssh21:26:271
81590rcu_preempt4374-21ssh21:18:490
81590rcu_preempt14734-21ssh22:37:411
81590rcu_preempt0-21swapper/122:00:481
81590rcu_preempt0-21swapper/121:09:401
81590rcu_preempt0-21swapper/120:04:371
81590rcu_preempt0-21swapper/023:19:530
81590rcu_preempt0-21swapper/000:28:010
146650590irq/31-eth0-tx-111rcuc/023:51:300
89550580irq/17-ehci_hcd3-21ksoftirqd/020:44:410
81580rcu_preempt4771-21ssh21:19:370
81580rcu_preempt15130-21ssh21:37:501
81580rcu_preempt14625-21ssh23:38:370
81580rcu_preempt0-21swapper/123:41:291
81580rcu_preempt0-21swapper/123:38:411
81580rcu_preempt0-21swapper/120:32:481
81580rcu_preempt0-21swapper/119:39:451
81580rcu_preempt0-21swapper/020:24:450
146650580irq/31-eth0-tx-41ktimersoftd/023:10:220
81570rcu_preempt8794-21ssh22:25:140
81570rcu_preempt29833-21ssh00:05:301
81570rcu_preempt27346-21ssh00:01:010
81570rcu_preempt0-21swapper/120:44:401
81570rcu_preempt0-21swapper/120:17:421
81560rcu_preempt24902-21ssh23:57:000
81560rcu_preempt0-21swapper/023:39:500
81560rcu_preempt0-21swapper/022:50:580
81560rcu_preempt0-21swapper/021:46:110
81560rcu_preempt0-21swapper/021:39:510
81560rcu_preempt0-21swapper/021:04:470
81560rcu_preempt0-21swapper/019:20:590
81550rcu_preempt12357-21python19:44:480
81550rcu_preempt0-21swapper/120:20:551
81550rcu_preempt0-21swapper/022:03:150
81540rcu_preempt22369-21proc_pri20:24:491
81540rcu_preempt0-21swapper/120:41:011
81540rcu_preempt0-21swapper/020:17:470
371799541cyclictest7893-21/usr/sbin/munin19:29:400
81530rcu_preempt23095-21diskstats20:29:400
81530rcu_preempt0-21swapper/019:56:500
81520rcu_preempt28469-21memory20:49:461
81520rcu_preempt0-21swapper/020:56:500
81510rcu_preempt21446-21munin-run20:24:250
81510rcu_preempt18012-21fw_forwarded_lo20:09:400
81510rcu_preempt0-21swapper/020:39:050
81510rcu_preempt0-21swapper/020:00:470
3718995148cyclictest945-21usb-storage19:27:431
146650480irq/31-eth0-tx-12914-21df_abs19:49:380
146550430irq/30-eth0-tx-3659-21kworker/0:019:34:500
146250430irq/28-eth0-rx-0-21swapper/121:02:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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