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2026-05-14 - 04:52
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Thu May 14, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
899501150irq/17-ehci_hcd5382-21ssh00:07:151
81830rcu_preempt0-21swapper/122:22:461
81820rcu_preempt6429-21if_can122:11:301
89950810irq/17-ehci_hcd945-21usb-storage22:07:510
81810rcu_preempt17851-21ssh21:32:301
81810rcu_preempt0-21swapper/100:31:291
81790rcu_preempt15777-21ssh00:27:211
81780rcu_preempt9311-21ssh23:16:241
81780rcu_preempt0-21swapper/123:21:301
81760rcu_preempt6610-21apt-get23:11:241
81760rcu_preempt27636-21ssh23:49:351
81760rcu_preempt19679-21munin-run22:36:131
81760rcu_preempt16845-21cron19:51:121
81760rcu_preempt0-21swapper/123:33:451
81760rcu_preempt0-21swapper/119:41:321
81750rcu_preempt23801-21rm21:43:501
81750rcu_preempt15820-21timerandwakeup23:26:381
81750rcu_preempt0-21swapper/119:10:371
81750rcu_preempt0-21swapper/100:41:001
81740rcu_preempt1683-21if_can000:01:291
81740rcu_preempt14764-21ssh21:26:491
81720rcu_preempt19-21ksoftirqd/122:47:451
81720rcu_preempt0-21swapper/122:04:471
81720rcu_preempt0-21swapper/120:36:301
81720rcu_preempt0-21swapper/119:31:371
81710rcu_preempt0-21swapper/123:41:291
81700rcu_preempt30236-21apt-get21:56:241
81700rcu_preempt19-21ksoftirqd/123:04:491
81700rcu_preempt0-21swapper/121:36:261
81700rcu_preempt0-21swapper/120:16:351
81690rcu_preempt30427-1kworker/1:1H23:51:491
81690rcu_preempt19-21ksoftirqd/123:36:251
81690rcu_preempt0-21swapper/121:15:421
81690rcu_preempt0-21swapper/120:06:361
81680rcu_preempt19-21ksoftirqd/100:16:301
81680rcu_preempt0-21swapper/122:42:021
81680rcu_preempt0-21swapper/122:28:161
81680rcu_preempt0-21swapper/121:16:411
89950670irq/17-ehci_hcd0-21swapper/123:58:451
81670rcu_preempt4679-21munin-run21:11:131
81670rcu_preempt0-21swapper/122:36:471
81670rcu_preempt0-21swapper/121:22:051
81670rcu_preempt0-21swapper/100:24:441
81670rcu_preempt0-21swapper/019:10:500
81670rcu_preempt0-21swapper/000:34:330
81660rcu_preempt0-21swapper/122:18:251
81660rcu_preempt0-21swapper/120:51:301
146250660irq/28-eth0-rx-41ktimersoftd/000:37:400
81650rcu_preempt1259-21ls20:56:291
81640rcu_preempt0-21swapper/023:15:460
81630rcu_preempt0-21swapper/120:12:081
81630rcu_preempt0-21swapper/019:21:370
81620rcu_preempt458-21ssh23:00:241
81620rcu_preempt27062-21wc20:31:121
6708996247cyclictest181ktimersoftd/123:08:051
81610rcu_preempt6283-21ssh00:11:211
81610rcu_preempt28669-21open_inodes22:51:351
81610rcu_preempt0-21swapper/122:10:341
81610rcu_preempt0-21swapper/121:51:261
81610rcu_preempt0-21swapper/120:01:311
81600rcu_preempt0-21swapper/120:21:331
81600rcu_preempt0-21swapper/119:11:321
81590rcu_preempt0-21swapper/121:46:431
81590rcu_preempt0-21swapper/120:26:381
81590rcu_preempt0-21swapper/119:26:261
81580rcu_preempt14797-21kworker/1:019:56:291
81580rcu_preempt0-21swapper/120:46:391
81580rcu_preempt0-21swapper/120:41:371
81580rcu_preempt0-21swapper/119:21:351
81580rcu_preempt0-21swapper/022:18:550
81570rcu_preempt0-21swapper/021:56:400
81560rcu_preempt13442-21df_inode19:36:271
81560rcu_preempt0-21swapper/023:07:110
81560rcu_preempt0-21swapper/020:15:280
81560rcu_preempt0-21swapper/019:49:550
81560rcu_preempt0-21swapper/019:44:440
81560rcu_preempt0-21swapper/019:28:270
81550rcu_preempt3154-21ssh22:06:050
81550rcu_preempt0-21swapper/121:01:391
81550rcu_preempt0-21swapper/023:21:030
81550rcu_preempt0-21swapper/022:58:590
81550rcu_preempt0-21swapper/022:46:190
81550rcu_preempt0-21swapper/022:36:140
81550rcu_preempt0-21swapper/020:23:550
81540rcu_preempt32408-21ssh23:57:060
81540rcu_preempt28652-21if_can020:36:300
81540rcu_preempt0-21swapper/021:47:070
81540rcu_preempt0-21swapper/021:40:400
81540rcu_preempt0-21swapper/019:56:230
81540rcu_preempt0-21swapper/019:11:230
81540rcu_preempt0-21swapper/000:07:160
6704995448cyclictest945-21usb-storage19:35:260
146250540irq/28-eth0-rx-41ktimersoftd/023:39:060
89950530irq/17-ehci_hcd4681-21diskmemload00:11:350
81530rcu_preempt7348-21ssh22:12:050
81530rcu_preempt28769-21ssh21:51:540
81530rcu_preempt27685-21ssh23:49:470
81530rcu_preempt15751-21ssh22:27:250
81530rcu_preempt12949-21ssh22:22:040
81530rcu_preempt0-21swapper/023:05:130
81530rcu_preempt0-21swapper/021:17:310
81530rcu_preempt0-21swapper/019:17:480
81520rcu_preempt23408-21ssh21:42:400
81520rcu_preempt16255-21ssh23:27:460
81520rcu_preempt0-21swapper/119:16:371
81520rcu_preempt0-21swapper/022:33:530
81520rcu_preempt0-21swapper/021:00:450
6704995249cyclictest945-21usb-storage00:18:410
81490rcu_preempt6854-21rm21:13:590
81490rcu_preempt14797-21kworker/1:019:51:281
81490rcu_preempt0-21swapper/021:23:090
81490rcu_preempt0-21swapper/020:28:030
146250490irq/28-eth0-rx-41ktimersoftd/022:45:420
81480rcu_preempt0-21swapper/020:46:120
6704994845cyclictest945-21usb-storage23:36:010
6704994841cyclictest945-21usb-storage20:16:280
81470rcu_preempt15966-21ssh00:27:570
6704994744cyclictest945-21usb-storage23:45:040
6704994744cyclictest945-21usb-storage21:31:350
146550470irq/30-eth0-tx-41ktimersoftd/023:54:490
6704994542cyclictest945-21usb-storage00:01:230
81440rcu_preempt31601-21ntp_states20:46:360
146650440irq/31-eth0-tx-29997-21rm22:54:450
6704994340cyclictest945-21usb-storage23:25:140
6704994340cyclictest945-21usb-storage21:28:580
146650400irq/31-eth0-tx-41ktimersoftd/000:24:510
6704993936cyclictest945-21usb-storage20:31:350
146450390irq/29-eth0-rx-0-21swapper/020:51:330
146250390irq/28-eth0-rx-4039-21/usr/sbin/munin21:06:310
146650370irq/31-eth0-tx-0-21swapper/021:01:370
6704993532cyclictest945-21usb-storage20:06:300
146250350irq/28-eth0-rx-16988-21apt-get19:51:230
146550330irq/30-eth0-tx-0-21swapper/019:36:270
81300rcu_preempt20500-21/usr/sbin/munin20:01:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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