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2026-09-04 - 14:33
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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 Sep 04, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920rcu_preempt0-21swapper/123:15:571
81820rcu_preempt19-21ksoftirqd/100:01:321
89950810irq/17-ehci_hcd945-21usb-storage19:18:240
81810rcu_preempt4500-21ssh23:04:141
81810rcu_preempt22848-21ssh21:32:081
81800rcu_preempt15744-21diskmemload23:49:011
81790rcu_preempt31940-21ssh22:54:341
81790rcu_preempt15914-21ssh21:20:501
81780rcu_preempt19-21ksoftirqd/100:15:441
81760rcu_preempt3891-1kworker/1:1H23:20:531
81760rcu_preempt19-21ksoftirqd/122:25:531
89950750irq/17-ehci_hcd17044-21apache223:43:321
81750rcu_preempt17552-21rm23:30:151
81750rcu_preempt10017-21munin-run23:15:421
81740rcu_preempt26117-21ssh21:40:201
81740rcu_preempt12687-21ssh00:25:211
81720rcu_preempt0-21swapper/120:01:041
81710rcu_preempt2192-21snmpd23:31:511
81710rcu_preempt19-21ksoftirqd/123:36:461
81710rcu_preempt19-21ksoftirqd/100:10:571
81710rcu_preempt0-21swapper/122:45:581
81710rcu_preempt0-21swapper/120:16:081
81710rcu_preempt0-21swapper/100:40:421
81700rcu_preempt2745-21sh00:04:200
81700rcu_preempt2253-21irqstats21:56:011
81700rcu_preempt0-21swapper/022:01:030
81690rcu_preempt19-21ksoftirqd/123:58:581
81690rcu_preempt14067-1kworker/1:0H23:52:011
81690rcu_preempt0-21swapper/122:07:201
81690rcu_preempt0-21swapper/121:26:061
81680rcu_preempt3760-21sh21:59:140
81680rcu_preempt0-21swapper/121:55:331
81680rcu_preempt0-21swapper/021:35:330
81670rcu_preempt30525-21sh21:47:161
81670rcu_preempt19-21ksoftirqd/100:43:181
81670rcu_preempt0-21swapper/123:10:171
81670rcu_preempt0-21swapper/122:11:061
81670rcu_preempt0-21swapper/121:41:111
81670rcu_preempt0-21swapper/121:03:391
81660rcu_preempt24844-21apt-get22:40:561
81660rcu_preempt19-21ksoftirqd/122:01:061
81660rcu_preempt12353-21ssh23:20:180
81660rcu_preempt0-21swapper/120:23:531
81660rcu_preempt0-21swapper/021:22:330
81650rcu_preempt20427-21ntpq22:31:051
81650rcu_preempt0-21swapper/022:14:370
81640rcu_preempt7044-21cpu20:45:551
81640rcu_preempt18472-21latency19:21:001
81640rcu_preempt0-21swapper/023:07:310
81630rcu_preempt0-21swapper/119:16:171
81630rcu_preempt0-21swapper/100:25:581
81620rcu_preempt26319-21ps19:51:061
81620rcu_preempt23464-21if_wlan019:41:011
81620rcu_preempt0-21swapper/121:10:581
81620rcu_preempt0-21swapper/119:30:551
81620rcu_preempt0-21swapper/100:49:031
89950610irq/17-ehci_hcd945-21usb-storage19:37:521
89150610irq/17-ehci_hcd0-21swapper/023:20:580
81610rcu_preempt0-21swapper/122:59:131
81610rcu_preempt0-21swapper/122:35:541
81600rcu_preempt13947-21ssh22:19:131
81600rcu_preempt0-21swapper/122:22:471
81600rcu_preempt0-21swapper/100:35:051
81600rcu_preempt0-21swapper/100:06:211
81590rcu_preempt0-21swapper/119:55:581
81590rcu_preempt0-21swapper/119:25:581
81590rcu_preempt0-21swapper/022:53:450
81590rcu_preempt0-21swapper/000:48:580
81590rcu_preempt0-21swapper/000:06:100
81580rcu_preempt9631-21ssh00:16:390
81580rcu_preempt1920-21ssh22:58:510
81580rcu_preempt16552-21ssh22:24:220
81580rcu_preempt0-21swapper/119:47:471
81580rcu_preempt0-21swapper/023:29:350
81580rcu_preempt0-21swapper/021:54:180
81580rcu_preempt0-21swapper/021:15:550
81570rcu_preempt18875-21ssh22:28:290
81570rcu_preempt0-21swapper/120:58:331
81570rcu_preempt0-21swapper/120:34:471
81570rcu_preempt0-21swapper/120:26:081
81570rcu_preempt0-21swapper/120:13:361
81570rcu_preempt0-21swapper/023:54:320
81570rcu_preempt0-21swapper/022:33:200
81570rcu_preempt0-21swapper/020:06:020
146250570irq/28-eth0-rx-30539-21apt-get23:55:540
81560rcu_preempt28879-21ssh22:47:460
81560rcu_preempt26101-21ssh21:40:160
81560rcu_preempt24470-21ssh22:40:020
81560rcu_preempt17272-21ssh00:33:210
81560rcu_preempt0-21swapper/023:33:450
81560rcu_preempt0-21swapper/021:29:410
81560rcu_preempt0-21swapper/019:56:050
81560rcu_preempt0-21swapper/000:13:200
81550rcu_preempt9870-21ssh23:15:100
81550rcu_preempt27084-21ssh23:47:310
81550rcu_preempt20262-21ssh00:40:100
81550rcu_preempt13673-21ssh22:18:110
81550rcu_preempt0-21swapper/120:51:001
81550rcu_preempt0-21swapper/120:44:001
81550rcu_preempt0-21swapper/120:38:141
81550rcu_preempt0-21swapper/021:49:170
81540rcu_preempt14947-21if_can121:15:591
81540rcu_preempt0-21swapper/022:43:060
81540rcu_preempt0-21swapper/020:42:450
81540rcu_preempt0-21swapper/019:38:100
81540rcu_preempt0-21swapper/019:23:220
81530rcu_preempt22452-21ssh00:44:020
81530rcu_preempt22040-21ssh23:38:160
81530rcu_preempt14190-21ssh00:26:240
81530rcu_preempt0-21swapper/022:08:150
81530rcu_preempt0-21swapper/019:33:000
81520rcu_preempt12324-21df_inode21:05:561
81520rcu_preempt0-21swapper/023:45:110
81520rcu_preempt0-21swapper/023:04:230
81520rcu_preempt0-21swapper/021:41:360
81520rcu_preempt0-21swapper/021:06:180
81520rcu_preempt0-21swapper/020:55:410
81520rcu_preempt0-21swapper/020:37:140
81520rcu_preempt0-21swapper/019:55:220
81510rcu_preempt0-21swapper/021:03:060
81510rcu_preempt0-21swapper/019:47:240
81510rcu_preempt0-21swapper/000:24:070
81500rcu_preempt29726-21if_eth020:06:011
81480rcu_preempt0-21swapper/020:45:530
81470rcu_preempt0-21swapper/021:11:450
17826994542cyclictest945-21usb-storage19:25:590
17826994339cyclictest945-21usb-storage20:20:580
17826994036cyclictest945-21usb-storage20:26:060
89950390irq/17-ehci_hcd945-21usb-storage20:10:560
89950350irq/17-ehci_hcd0-21swapper/020:01:040
89950340irq/17-ehci_hcd945-21usb-storage20:33:400
1599340migration/023257-21/usr/sbin/munin19:40:580
146550330irq/30-eth0-tx-9563-21/usr/sbin/munin20:56:050
17826993027cyclictest945-21usb-storage20:16:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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