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2026-04-12 - 07:47
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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 Sun Apr 12, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt29679-21if_can000:00:421
147950750irq/31-eth0-tx-41ktimersoftd/022:14:550
89850720irq/17-ehci_hcd15705-21ssh21:28:460
81720rcu_preempt22436-21sh22:43:511
81720rcu_preempt10563-21uname22:20:431
81720rcu_preempt0-21swapper/121:25:431
81710rcu_preempt24217-21sh21:45:330
81710rcu_preempt0-21swapper/121:16:191
81710rcu_preempt0-21swapper/100:35:481
81710rcu_preempt0-21swapper/021:35:420
81710rcu_preempt0-21swapper/000:00:440
81700rcu_preempt6725-21/usr/sbin/munin00:20:510
81700rcu_preempt26198-21mailstats20:15:481
81700rcu_preempt0-21swapper/123:33:371
81700rcu_preempt0-21swapper/000:36:140
81690rcu_preempt8026-21diskmemload21:42:151
81690rcu_preempt11427-21latency_hist19:20:231
81690rcu_preempt0-21swapper/123:36:151
81690rcu_preempt0-21swapper/121:38:471
81690rcu_preempt0-21swapper/100:12:101
89450680irq/17-ehci_hcd8884-21/usr/sbin/munin19:10:441
81680rcu_preempt13781-21ssh00:33:370
81680rcu_preempt11917-21/usr/sbin/munin21:20:491
81680rcu_preempt0-21swapper/022:29:420
81670rcu_preempt7595-21ssh22:15:350
81670rcu_preempt16291-21ssh21:30:370
81670rcu_preempt0-21swapper/123:09:341
81670rcu_preempt0-21swapper/121:02:261
81670rcu_preempt0-21swapper/100:40:421
81670rcu_preempt0-21swapper/100:28:511
81670rcu_preempt0-21swapper/022:51:440
81660rcu_preempt27651-21ssh21:50:480
81660rcu_preempt23026-21ssh22:45:240
81660rcu_preempt0-21swapper/123:51:021
81660rcu_preempt0-21swapper/123:48:341
81660rcu_preempt0-21swapper/123:04:581
81660rcu_preempt0-21swapper/122:49:191
81660rcu_preempt0-21swapper/100:21:111
81650rcu_preempt20136-21munin-run19:55:231
81650rcu_preempt1116-21ssh22:01:510
81650rcu_preempt0-21swapper/122:16:181
81650rcu_preempt0-21swapper/119:30:361
81640rcu_preempt19453-21sendmail00:45:230
81640rcu_preempt18775-21timerandwakeup19:45:481
81640rcu_preempt14011-21ssh23:30:370
81640rcu_preempt0-21swapper/123:21:181
81640rcu_preempt0-21swapper/122:58:581
81640rcu_preempt0-21swapper/121:48:041
81640rcu_preempt0-21swapper/120:11:321
81640rcu_preempt0-21swapper/119:15:441
81640rcu_preempt0-21swapper/022:23:230
81640rcu_preempt0-21swapper/022:08:460
81640rcu_preempt0-21swapper/021:42:200
81630rcu_preempt25760-21cpuspeed22:50:371
81630rcu_preempt24701-21sed20:10:440
81630rcu_preempt16211-21ps22:30:451
81630rcu_preempt0-21swapper/120:59:531
81630rcu_preempt0-21swapper/120:35:471
81630rcu_preempt0-21swapper/023:40:390
81630rcu_preempt0-21swapper/023:40:390
81630rcu_preempt0-21swapper/023:23:340
81630rcu_preempt0-21swapper/023:16:150
81630rcu_preempt0-21swapper/023:00:390
81630rcu_preempt0-21swapper/021:58:420
81630rcu_preempt0-21swapper/021:09:090
81630rcu_preempt0-21swapper/021:09:090
81620rcu_preempt9902-21ntp_states00:25:450
81620rcu_preempt16331-21sshd19:39:131
81620rcu_preempt0-21swapper/121:56:321
81620rcu_preempt0-21swapper/120:20:391
81620rcu_preempt0-21swapper/019:10:460
81620rcu_preempt0-21swapper/000:13:320
81610rcu_preempt7981-1kworker/0:2H21:20:100
81610rcu_preempt5502-21ssh23:13:431
81610rcu_preempt29954-21ssh22:58:040
81610rcu_preempt29119-21ssh21:54:371
81610rcu_preempt22046-21ssh23:45:420
81610rcu_preempt20724-21entropy22:40:400
81610rcu_preempt1906-21ssh22:04:471
81610rcu_preempt18713-21ssh21:35:181
81610rcu_preempt0-21swapper/121:10:491
81610rcu_preempt0-21swapper/023:54:360
81610rcu_preempt0-21swapper/020:55:430
81610rcu_preempt0-21swapper/020:05:230
81600rcu_preempt7452-21ssh23:16:161
81600rcu_preempt3661-21ssh22:06:361
81600rcu_preempt19299-21ssh22:36:511
81600rcu_preempt12714-21ssh23:26:411
81600rcu_preempt0-21swapper/122:26:111
81600rcu_preempt0-21swapper/000:05:380
81590rcu_preempt7040-21ssh22:14:091
81590rcu_preempt20566-21ssh23:42:121
81590rcu_preempt20566-21ssh23:42:121
81590rcu_preempt18237-21ssh23:38:000
81590rcu_preempt14115-21ssh00:34:531
81590rcu_preempt13812-21sshd19:27:471
81590rcu_preempt0-21swapper/120:40:401
81590rcu_preempt0-21swapper/120:27:161
81590rcu_preempt0-21swapper/119:42:571
81590rcu_preempt0-21swapper/100:07:501
81590rcu_preempt0-21swapper/022:35:400
81590rcu_preempt0-21swapper/020:47:220
81590rcu_preempt0-21swapper/019:30:480
81580rcu_preempt3-21ksoftirqd/022:33:210
81580rcu_preempt10577-21if_eth019:15:400
81580rcu_preempt0-21swapper/123:58:581
81580rcu_preempt0-21swapper/100:20:001
81580rcu_preempt0-21swapper/023:25:270
81580rcu_preempt0-21swapper/023:12:160
81580rcu_preempt0-21swapper/023:08:250
81580rcu_preempt0-21swapper/021:23:470
81570rcu_preempt31064-21ntpq20:35:460
81570rcu_preempt28983-21/usr/sbin/munin20:30:220
81570rcu_preempt0-21swapper/121:08:371
81570rcu_preempt0-21swapper/121:08:371
81570rcu_preempt0-21swapper/023:59:590
81570rcu_preempt0-21swapper/019:41:030
81560rcu_preempt0-21swapper/120:32:451
81560rcu_preempt0-21swapper/019:55:430
81550rcu_preempt421-21latency_hist20:45:231
89850540irq/17-ehci_hcd31626-21/usr/sbin/munin20:40:490
81540rcu_preempt27714-21/usr/sbin/munin20:25:220
81540rcu_preempt0-21swapper/120:50:571
81540rcu_preempt0-21swapper/021:00:420
81540rcu_preempt0-21swapper/020:55:000
81540rcu_preempt0-21swapper/020:17:290
81540rcu_preempt0-21swapper/000:16:230
81530rcu_preempt0-21swapper/120:02:131
81530rcu_preempt0-21swapper/020:03:460
81530rcu_preempt0-21swapper/019:45:430
81520rcu_preempt0-21swapper/019:50:390
81520rcu_preempt0-21swapper/019:36:290
147650520irq/28-eth0-rx-41ktimersoftd/020:30:530
10045995047cyclictest945-21usb-storage19:25:350
10045994946cyclictest945-21usb-storage21:10:390
81480rcu_preempt11913-21irqstats19:20:400
81460rcu_preempt0-21swapper/120:00:011
81370rcu_preempt19-21ksoftirqd/120:05:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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