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2026-04-03 - 19:07
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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 Apr 03, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt0-21swapper/112:20:071
81790rcu_preempt19-21ksoftirqd/111:50:171
81780rcu_preempt16024-21ssh12:14:231
81750rcu_preempt32309-21munin-run08:00:001
81750rcu_preempt31836-21sh11:40:331
81750rcu_preempt20898-21cyclictest09:35:210
81750rcu_preempt17650-21latency_hist09:10:001
81750rcu_preempt16713-21ssh11:12:551
81750rcu_preempt1153-21idleruntime-cro08:05:001
81750rcu_preempt0-21swapper/109:50:221
89850740irq/17-ehci_hcd945-21usb-storage07:11:531
81740rcu_preempt0-21swapper/112:30:381
81730rcu_preempt29188-21diskmemload09:33:301
81730rcu_preempt26380-21sh09:27:241
81730rcu_preempt0-21swapper/111:33:231
81730rcu_preempt0-21swapper/107:24:021
81720rcu_preempt22957-21sh12:25:541
81720rcu_preempt0-21swapper/108:05:141
81710rcu_preempt31874-21ssh12:44:541
81710rcu_preempt27068-21if_can112:35:171
81710rcu_preempt25333-21sh11:30:030
81710rcu_preempt22488-21sh10:21:191
81710rcu_preempt18870-21diskmemload10:40:060
81710rcu_preempt0-21swapper/107:15:141
81710rcu_preempt0-21swapper/007:10:170
81700rcu_preempt0-21swapper/108:40:201
81700rcu_preempt0-21swapper/108:25:221
81690rcu_preempt24122-21ssh09:23:570
81690rcu_preempt0-21swapper/112:18:241
81690rcu_preempt0-21swapper/110:44:421
81690rcu_preempt0-21swapper/110:01:391
81690rcu_preempt0-21swapper/109:45:231
81690rcu_preempt0-21swapper/109:24:341
81680rcu_preempt29370-21grep07:45:221
81680rcu_preempt28029-21/usr/sbin/munin11:35:241
81680rcu_preempt19060-21apt-get09:15:130
81680rcu_preempt0-21swapper/111:20:211
81680rcu_preempt0-21swapper/110:28:411
81680rcu_preempt0-21swapper/109:36:021
81670rcu_preempt0-21swapper/111:58:161
81670rcu_preempt0-21swapper/111:00:281
81670rcu_preempt0-21swapper/110:59:511
81670rcu_preempt0-21swapper/110:12:501
81670rcu_preempt0-21swapper/107:42:131
147950670irq/31-eth0-tx-445-21diskstats09:40:151
81650rcu_preempt0-21swapper/110:05:241
81630rcu_preempt19-21ksoftirqd/109:15:191
81620rcu_preempt0-21swapper/110:36:281
81620rcu_preempt0-21swapper/109:15:001
81620rcu_preempt0-21swapper/108:50:001
81610rcu_preempt8797-21strings09:55:221
81610rcu_preempt11890-21sed12:05:211
81610rcu_preempt0-21swapper/111:25:251
81610rcu_preempt0-21swapper/111:17:341
81610rcu_preempt0-21swapper/111:07:391
81610rcu_preempt0-21swapper/110:34:181
81610rcu_preempt0-21swapper/109:00:181
81610rcu_preempt0-21swapper/108:55:141
81610rcu_preempt0-21swapper/108:49:421
81610rcu_preempt0-21swapper/010:12:230
81600rcu_preempt0-21swapper/112:00:171
81600rcu_preempt0-21swapper/111:45:251
81600rcu_preempt0-21swapper/108:30:191
81600rcu_preempt0-21swapper/108:10:251
81590rcu_preempt17762-1kworker/1:1H10:15:401
81590rcu_preempt0-21swapper/110:47:371
81590rcu_preempt0-21swapper/108:20:151
81590rcu_preempt0-21swapper/107:33:391
81590rcu_preempt0-21swapper/012:06:410
81580rcu_preempt6392-21ssh10:53:351
81580rcu_preempt0-21swapper/107:53:411
81570rcu_preempt23416-21latency_hist07:25:001
81560rcu_preempt0-21swapper/009:26:300
81550rcu_preempt0-21swapper/108:20:001
81550rcu_preempt0-21swapper/012:24:000
81550rcu_preempt0-21swapper/012:19:120
20900995547cyclictest945-21usb-storage08:40:110
81540rcu_preempt2138-21snmpd08:39:171
81540rcu_preempt0-21swapper/107:35:341
20900995450cyclictest945-21usb-storage10:16:230
20900995448cyclictest945-21usb-storage10:22:540
147950540irq/31-eth0-tx-7559-21rm09:53:500
147650540irq/28-eth0-rx-41ktimersoftd/011:10:390
81530rcu_preempt0-21swapper/012:29:380
147950530irq/31-eth0-tx-41ktimersoftd/012:12:570
89850520irq/17-ehci_hcd0-21swapper/011:29:240
81520rcu_preempt5095-21ssh11:52:150
81520rcu_preempt0-21swapper/010:48:330
20900995249cyclictest945-21usb-storage07:15:120
89850510irq/17-ehci_hcd0-21swapper/012:33:570
81510rcu_preempt31280-21ssh12:42:430
81510rcu_preempt13019-21ssh10:04:500
81510rcu_preempt0-21swapper/011:57:320
81510rcu_preempt0-21swapper/008:31:180
20900995148cyclictest945-21usb-storage12:39:490
20900995148cyclictest945-21usb-storage12:01:370
20900995148cyclictest945-21usb-storage11:42:440
20900995148cyclictest945-21usb-storage10:37:040
20900995148cyclictest945-21usb-storage09:57:590
20900995148cyclictest945-21usb-storage08:50:160
20900995148cyclictest945-21usb-storage07:57:520
20900995148cyclictest945-21usb-storage07:35:200
20900995148cyclictest945-21usb-storage07:30:210
20900995146cyclictest945-21usb-storage11:08:360
20900995143cyclictest945-21usb-storage10:58:120
147650510irq/28-eth0-rx-41ktimersoftd/009:13:320
81500rcu_preempt18870-21diskmemload11:21:040
20900995047cyclictest945-21usb-storage11:15:300
20900995047cyclictest945-21usb-storage10:27:370
20900995047cyclictest945-21usb-storage09:45:130
20900995047cyclictest945-21usb-storage09:44:180
20900995047cyclictest945-21usb-storage08:22:260
20900995047cyclictest945-21usb-storage08:00:210
20900995042cyclictest945-21usb-storage10:32:110
20900994946cyclictest945-21usb-storage09:00:120
20900994946cyclictest945-21usb-storage08:45:120
20900994845cyclictest945-21usb-storage11:00:190
20900994845cyclictest945-21usb-storage09:32:290
20900994844cyclictest945-21usb-storage10:51:060
20900994844cyclictest945-21usb-storage08:15:120
20900994744cyclictest945-21usb-storage11:49:010
20900994744cyclictest945-21usb-storage08:05:100
81460rcu_preempt29392-21ntp_states07:45:230
20900994643cyclictest945-21usb-storage10:05:360
20900994642cyclictest945-21usb-storage11:35:140
81440rcu_preempt9478-21memory08:35:200
20900994340cyclictest945-21usb-storage07:40:230
20900994238cyclictest945-21usb-storage07:52:000
20900993936cyclictest945-21usb-storage08:13:440
20900993936cyclictest945-21usb-storage07:20:210
20900993935cyclictest945-21usb-storage09:05:170
147950380irq/31-eth0-tx-0-21swapper/007:25:230
89450370irq/17-ehci_hcd14895-21sed08:55:250
20900993633cyclictest945-21usb-storage08:27:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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