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2025-10-24 - 08:27
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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 Fri Oct 24, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
899501110irq/17-ehci_hcd41ktimersoftd/019:10:350
81810rcu_preempt2224-21snmpd19:15:031
81770rcu_preempt19-21ksoftirqd/123:36:461
81760rcu_preempt19-21ksoftirqd/122:49:501
81740rcu_preempt26411-21apt-get00:35:311
81740rcu_preempt0-21swapper/000:20:310
81730rcu_preempt19-21ksoftirqd/122:52:361
81720rcu_preempt0-21swapper/019:50:330
81710rcu_preempt0-21swapper/022:56:300
81700rcu_preempt31792-21ssh22:43:181
81700rcu_preempt31792-21ssh22:43:181
81700rcu_preempt10117-21sh23:03:200
81700rcu_preempt0-21swapper/023:25:460
81690rcu_preempt23473-21sh21:27:110
81690rcu_preempt1899-21sh22:47:450
81690rcu_preempt10192-21sh22:02:410
81670rcu_preempt10879-21sh23:05:160
81670rcu_preempt0-21swapper/023:13:000
81670rcu_preempt0-21swapper/021:36:250
81660rcu_preempt16845-21ntp_states21:15:380
81660rcu_preempt0-21swapper/022:27:150
81650rcu_preempt21332-21fw_forwarded_lo00:25:330
81650rcu_preempt0-21swapper/022:07:580
81650rcu_preempt0-21swapper/020:47:100
81640rcu_preempt32129-21munin-run23:45:120
81640rcu_preempt26480-21sh21:33:320
81640rcu_preempt0-21swapper/023:21:330
81630rcu_preempt32485-21ssh21:45:040
81630rcu_preempt0-21swapper/120:20:051
81630rcu_preempt0-21swapper/020:50:380
81630rcu_preempt0-21swapper/020:40:400
81620rcu_preempt30466-21timerwakeupswit20:00:390
81620rcu_preempt10155-21ssh22:02:341
81620rcu_preempt0-21swapper/123:40:521
81620rcu_preempt0-21swapper/023:46:410
81620rcu_preempt0-21swapper/022:00:130
81610rcu_preempt7722-21ssh21:58:311
81610rcu_preempt30682-21latency_hist20:05:130
81610rcu_preempt27154-21ssh21:35:191
81610rcu_preempt26407-21/usr/sbin/munin00:35:340
81610rcu_preempt26085-21ssh21:32:111
81610rcu_preempt23973-21ssh23:29:451
81610rcu_preempt15846-21diskmemload22:23:030
81610rcu_preempt0-21swapper/123:45:341
81610rcu_preempt0-21swapper/122:24:211
81610rcu_preempt0-21swapper/121:28:521
81610rcu_preempt0-21swapper/121:20:151
81610rcu_preempt0-21swapper/100:23:141
81610rcu_preempt0-21swapper/023:35:360
81610rcu_preempt0-21swapper/000:03:510
81610rcu_preempt0-21swapper/000:03:510
81600rcu_preempt6821-21ssh22:55:531
81600rcu_preempt30688-21ssh00:42:081
81600rcu_preempt29416-21ssh22:39:081
81600rcu_preempt17463-21ssh21:16:231
81600rcu_preempt13398-21ssh23:10:111
81600rcu_preempt0-21swapper/123:13:481
81600rcu_preempt0-21swapper/121:00:381
81600rcu_preempt0-21swapper/120:45:071
81600rcu_preempt0-21swapper/119:25:441
81600rcu_preempt0-21swapper/119:24:281
81600rcu_preempt0-21swapper/100:18:011
81600rcu_preempt0-21swapper/100:01:211
81600rcu_preempt0-21swapper/100:01:211
81600rcu_preempt0-21swapper/022:19:270
81600rcu_preempt0-21swapper/021:55:060
81600rcu_preempt0-21swapper/020:35:390
81590rcu_preempt4748-21ssh21:52:411
81590rcu_preempt0-21swapper/123:21:371
81590rcu_preempt0-21swapper/122:16:301
81590rcu_preempt0-21swapper/122:05:211
81590rcu_preempt0-21swapper/120:06:281
81590rcu_preempt0-21swapper/100:27:361
81590rcu_preempt0-21swapper/019:30:280
81580rcu_preempt25531-21ssh23:30:491
81580rcu_preempt12462-21ssh00:07:231
81580rcu_preempt0-21swapper/123:57:111
81580rcu_preempt0-21swapper/122:31:211
81580rcu_preempt0-21swapper/121:45:161
81580rcu_preempt0-21swapper/121:40:271
81580rcu_preempt0-21swapper/120:26:381
81580rcu_preempt0-21swapper/120:00:311
81580rcu_preempt0-21swapper/100:30:591
81580rcu_preempt0-21swapper/019:20:360
89950570irq/17-ehci_hcd3-21ksoftirqd/021:47:090
81570rcu_preempt6586-21ntp_states20:35:381
81570rcu_preempt4589-21ssh22:52:330
81570rcu_preempt20328-21ssh21:21:140
81570rcu_preempt18581-21ssh23:19:300
81570rcu_preempt17639-21ssh23:16:101
81570rcu_preempt15133-21ssh22:11:241
81570rcu_preempt0-21swapper/123:50:371
81570rcu_preempt0-21swapper/120:56:291
81570rcu_preempt0-21swapper/120:52:391
81570rcu_preempt0-21swapper/120:45:171
81570rcu_preempt0-21swapper/120:35:051
81570rcu_preempt0-21swapper/022:36:490
81570rcu_preempt0-21swapper/021:00:330
81570rcu_preempt0-21swapper/019:55:290
81570rcu_preempt0-21swapper/000:42:170
81570rcu_preempt0-21swapper/000:10:060
81560rcu_preempt15391-21ssh00:13:101
81560rcu_preempt0-21swapper/123:03:351
81560rcu_preempt0-21swapper/119:35:311
81560rcu_preempt0-21swapper/022:41:040
81560rcu_preempt0-21swapper/022:41:040
81560rcu_preempt0-21swapper/019:45:100
81560rcu_preempt0-21swapper/000:18:150
81550rcu_preempt26147-21ssh22:32:110
81550rcu_preempt2224-21snmpd23:31:480
81550rcu_preempt15450-21ntpq21:10:380
81550rcu_preempt15160-21ssh22:11:290
81550rcu_preempt15059-21ssh00:12:010
81550rcu_preempt12074-21munin-run21:00:120
81550rcu_preempt0-21swapper/121:11:361
81550rcu_preempt0-21swapper/121:08:561
81550rcu_preempt0-21swapper/120:22:431
81550rcu_preempt0-21swapper/120:10:431
81550rcu_preempt0-21swapper/119:18:541
81550rcu_preempt0-21swapper/023:52:080
81550rcu_preempt0-21swapper/021:05:420
81550rcu_preempt0-21swapper/020:15:300
81540rcu_preempt6978-21ssh23:57:200
81530rcu_preempt0-21swapper/020:26:130
81530rcu_preempt0-21swapper/000:31:220
17963995249cyclictest945-21usb-storage22:28:441
17963995248cyclictest945-21usb-storage19:40:311
17963995243cyclictest945-21usb-storage19:47:161
81510rcu_preempt0-21swapper/119:31:281
81510rcu_preempt0-21swapper/019:28:520
81510rcu_preempt0-21swapper/019:16:140
17963995148cyclictest945-21usb-storage19:58:281
81500rcu_preempt23366-21df_inode19:35:280
17963995045cyclictest945-21usb-storage19:52:161
17962994845cyclictest945-21usb-storage20:10:130
81470rcu_preempt2730-21cut20:20:350
81470rcu_preempt0-21swapper/020:30:290
81450rcu_preempt0-21swapper/019:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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