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2026-05-07 - 07:00
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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 Thu May 07, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt19-21ksoftirqd/123:40:491
81730rcu_preempt379-21ntp_states00:31:001
81730rcu_preempt0-21swapper/121:45:571
81730rcu_preempt0-21swapper/100:40:351
81720rcu_preempt0-21swapper/123:45:581
81720rcu_preempt0-21swapper/119:08:241
81710rcu_preempt18005-21diskmemload23:18:281
81710rcu_preempt18005-21diskmemload23:18:281
81710rcu_preempt18005-21diskmemload22:30:591
81710rcu_preempt0-21swapper/121:19:251
81700rcu_preempt311-21/usr/sbin/munin20:00:491
81700rcu_preempt30911-21ssh00:27:431
81700rcu_preempt2273-21ssh23:33:521
81700rcu_preempt18573-21modprobe21:10:541
81700rcu_preempt0-21swapper/123:01:431
81700rcu_preempt0-21swapper/120:55:561
81700rcu_preempt0-21swapper/019:50:550
81670rcu_preempt3434-1kworker/1:1H22:54:391
81670rcu_preempt18005-21diskmemload23:55:581
81670rcu_preempt0-21swapper/123:35:571
81670rcu_preempt0-21swapper/122:49:371
81660rcu_preempt13199-21apt-get22:55:500
81660rcu_preempt0-21swapper/122:57:171
81660rcu_preempt0-21swapper/122:25:551
81660rcu_preempt0-21swapper/121:21:311
81660rcu_preempt0-21swapper/121:07:381
81660rcu_preempt0-21swapper/119:56:211
81660rcu_preempt0-21swapper/100:20:551
81650rcu_preempt10370-21ssh21:51:461
81650rcu_preempt0-21swapper/122:11:341
81650rcu_preempt0-21swapper/122:04:161
81650rcu_preempt0-21swapper/100:06:411
81640rcu_preempt4172-21ssh21:41:011
81640rcu_preempt0-21swapper/122:16:021
81640rcu_preempt0-21swapper/120:17:281
81640rcu_preempt0-21swapper/100:17:221
81640rcu_preempt0-21swapper/019:05:540
81630rcu_preempt0-21swapper/123:20:561
81630rcu_preempt0-21swapper/122:05:431
81630rcu_preempt0-21swapper/120:50:581
81620rcu_preempt30245-21ssh23:25:561
81620rcu_preempt2957-21munin-run21:40:371
81620rcu_preempt11559-21ssh23:50:471
81620rcu_preempt0-21swapper/121:58:041
81620rcu_preempt0-21swapper/119:16:341
81620rcu_preempt0-21swapper/100:04:071
81610rcu_preempt3-21ksoftirqd/022:07:150
81610rcu_preempt27583-21latency_hist19:40:371
81610rcu_preempt22691-21/usr/sbin/munin19:20:561
81610rcu_preempt0-21swapper/122:35:521
81610rcu_preempt0-21swapper/119:32:241
81610rcu_preempt0-21swapper/000:40:340
81600rcu_preempt6428-21tail20:21:001
81600rcu_preempt32578-21latency_hist21:35:371
81600rcu_preempt26278-21ssh22:20:521
81600rcu_preempt21380-21munin-run23:10:371
81600rcu_preempt11035-21if_wlan020:40:541
81600rcu_preempt0-21swapper/123:12:111
81600rcu_preempt0-21swapper/119:50:371
81600rcu_preempt0-21swapper/100:14:071
81590rcu_preempt0-21swapper/122:42:591
81590rcu_preempt0-21swapper/121:27:401
81590rcu_preempt0-21swapper/119:25:521
81590rcu_preempt0-21swapper/022:31:120
81580rcu_preempt0-21swapper/121:04:281
81580rcu_preempt0-21swapper/119:55:371
81570rcu_preempt0-21swapper/120:10:531
81570rcu_preempt0-21swapper/119:12:111
81570rcu_preempt0-21swapper/022:16:240
146650570irq/31-eth0-tx-41ktimersoftd/022:13:550
89950560irq/17-ehci_hcd945-21usb-storage20:01:060
81560rcu_preempt7071-21ssh22:44:510
81560rcu_preempt31816-21ssh21:33:230
81560rcu_preempt31774-21ssh23:28:150
81560rcu_preempt0-21swapper/023:57:200
81560rcu_preempt0-21swapper/022:04:020
81560rcu_preempt0-21swapper/000:16:590
81550rcu_preempt0-21swapper/120:31:001
81550rcu_preempt0-21swapper/120:05:531
81550rcu_preempt0-21swapper/022:48:230
81550rcu_preempt0-21swapper/019:12:230
89550540irq/17-ehci_hcd6691-21ssh23:40:580
81540rcu_preempt30896-21ssh00:27:390
81540rcu_preempt28368-21ssh00:22:400
81540rcu_preempt21490-21ssh00:07:480
81540rcu_preempt0-21swapper/120:35:481
81540rcu_preempt0-21swapper/023:32:450
81540rcu_preempt0-21swapper/023:13:320
81540rcu_preempt0-21swapper/021:19:150
81540rcu_preempt0-21swapper/019:32:230
81530rcu_preempt2756-21ssh21:39:590
81530rcu_preempt0-21swapper/119:40:591
81530rcu_preempt0-21swapper/022:54:020
81530rcu_preempt0-21swapper/020:36:070
81530rcu_preempt0-21swapper/000:34:520
81520rcu_preempt7367-21ssh21:46:270
81520rcu_preempt5200-21ssh23:39:000
81520rcu_preempt5153-21ssh21:43:320
81520rcu_preempt28650-21ssh23:22:270
81520rcu_preempt28368-21ssh22:25:150
81520rcu_preempt19824-21ssh21:12:180
81520rcu_preempt17599-21ssh23:02:420
81520rcu_preempt14080-21ssh21:59:580
81520rcu_preempt10384-21ssh21:51:490
81520rcu_preempt0-21swapper/020:40:460
81520rcu_preempt0-21swapper/019:37:080
81520rcu_preempt0-21swapper/000:00:480
81510rcu_preempt29326-21ssh21:29:500
81510rcu_preempt0-21swapper/022:28:120
81510rcu_preempt0-21swapper/020:25:560
81510rcu_preempt0-21swapper/020:16:110
81510rcu_preempt0-21swapper/020:08:350
81510rcu_preempt0-21swapper/000:13:330
20044995149cyclictest6312-21kworker/1:220:26:101
20028995148cyclictest945-21usb-storage23:51:000
81500rcu_preempt11829-21apt-get20:45:481
81500rcu_preempt0-21swapper/020:11:430
81500rcu_preempt0-21swapper/019:43:300
20028995048cyclictest945-21usb-storage21:01:010
81490rcu_preempt0-21swapper/023:45:540
81490rcu_preempt0-21swapper/020:54:530
81480rcu_preempt23415-21ntp_states19:20:570
81480rcu_preempt14610-21fw_conntrack20:55:520
20028994845cyclictest945-21usb-storage20:46:010
81470rcu_preempt20267-21ssh23:07:110
81470rcu_preempt0-21swapper/021:06:090
81470rcu_preempt0-21swapper/019:30:310
81460rcu_preempt0-21swapper/019:46:060
146550460irq/30-eth0-tx-0-21swapper/023:17:480
146550460irq/30-eth0-tx-0-21swapper/023:17:480
89950420irq/17-ehci_hcd4589-21munin-run22:40:370
146250420irq/28-eth0-rx-20624-1kworker/0:0H21:21:010
89550330irq/17-ehci_hcd0-21swapper/020:32:200
146250320irq/28-eth0-rx-41ktimersoftd/019:17:150
89950310irq/17-ehci_hcd0-21swapper/019:56:260
146550290irq/30-eth0-tx-0-21swapper/020:20:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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