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2026-01-07 - 10:15
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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 Wed Jan 07, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81770rcu_preempt0-21swapper/100:27:451
81760rcu_preempt19-21ksoftirqd/122:04:491
81750rcu_preempt0-21swapper/100:36:321
81740rcu_preempt0-21swapper/123:56:211
81740rcu_preempt0-21swapper/123:26:461
81740rcu_preempt0-21swapper/123:16:191
81730rcu_preempt5354-21wc22:46:061
81720rcu_preempt8871-21ssh22:51:260
81720rcu_preempt2138-21snmpd19:07:401
81720rcu_preempt19-21ksoftirqd/100:12:261
81720rcu_preempt11397-21/usr/sbin/munin22:56:231
81710rcu_preempt4549-21sh22:43:530
81710rcu_preempt0-21swapper/022:56:330
81690rcu_preempt6473-21diskmemload21:51:211
81690rcu_preempt0-21swapper/022:06:230
81680rcu_preempt0-21swapper/122:31:421
147850680irq/30-eth0-tx-41ktimersoftd/022:17:230
89450670irq/17-ehci_hcd0-21swapper/019:06:090
81670rcu_preempt0-21swapper/023:02:280
81670rcu_preempt0-21swapper/020:26:230
81660rcu_preempt0-21swapper/021:51:070
81650rcu_preempt6008-21latency_hist21:51:050
81650rcu_preempt2720-21ssh00:33:580
81650rcu_preempt25356-21ssh21:27:410
81650rcu_preempt0-21swapper/023:21:180
81650rcu_preempt0-21swapper/023:12:510
81650rcu_preempt0-21swapper/022:31:530
81650rcu_preempt0-21swapper/022:26:460
81650rcu_preempt0-21swapper/019:16:290
81630rcu_preempt19-21ksoftirqd/123:13:131
81630rcu_preempt0-21swapper/023:28:390
81630rcu_preempt0-21swapper/022:11:270
81630rcu_preempt0-21swapper/000:14:030
81620rcu_preempt27558-21ntpq21:31:270
81620rcu_preempt14351-21ssh23:56:430
81620rcu_preempt0-21swapper/023:16:250
81620rcu_preempt0-21swapper/022:23:570
81620rcu_preempt0-21swapper/019:36:300
81610rcu_preempt19-21ksoftirqd/123:39:351
81610rcu_preempt14539-21munin-run22:06:050
81610rcu_preempt0-21swapper/023:55:590
81610rcu_preempt0-21swapper/021:56:200
89850600irq/17-ehci_hcd945-21usb-storage21:45:321
81600rcu_preempt6641-21ssh23:44:320
81600rcu_preempt5829-21ssh00:39:530
81600rcu_preempt0-21swapper/022:47:050
81600rcu_preempt0-21swapper/020:16:200
81600rcu_preempt0-21swapper/000:25:090
81590rcu_preempt16008-21ssh21:11:360
81590rcu_preempt0-21swapper/023:47:120
81590rcu_preempt0-21swapper/023:06:070
81590rcu_preempt0-21swapper/021:45:090
81590rcu_preempt0-21swapper/021:16:120
81590rcu_preempt0-21swapper/000:10:440
89850580irq/17-ehci_hcd0-21swapper/122:51:101
81580rcu_preempt30993-21ssh21:36:400
81580rcu_preempt0-21swapper/023:31:210
81580rcu_preempt0-21swapper/022:36:220
81580rcu_preempt0-21swapper/022:36:220
81580rcu_preempt0-21swapper/020:32:410
81580rcu_preempt0-21swapper/020:24:150
81580rcu_preempt0-21swapper/020:11:220
81580rcu_preempt0-21swapper/000:01:300
89850570irq/17-ehci_hcd945-21usb-storage21:33:101
81570rcu_preempt22589-21ssh21:22:530
81570rcu_preempt0-21swapper/021:01:330
81570rcu_preempt0-21swapper/020:57:110
81570rcu_preempt0-21swapper/020:39:150
81570rcu_preempt0-21swapper/020:09:310
81570rcu_preempt0-21swapper/019:54:270
81570rcu_preempt0-21swapper/000:26:530
81570rcu_preempt0-21swapper/000:16:430
81560rcu_preempt3460-21ssh23:38:060
81560rcu_preempt19-21ksoftirqd/121:13:101
81560rcu_preempt0-21swapper/123:46:051
81560rcu_preempt0-21swapper/122:19:121
81560rcu_preempt0-21swapper/122:11:441
81560rcu_preempt0-21swapper/121:22:061
81560rcu_preempt0-21swapper/100:18:511
81560rcu_preempt0-21swapper/020:51:400
16515995648cyclictest181ktimersoftd/120:50:531
89850550irq/17-ehci_hcd945-21usb-storage00:01:311
81550rcu_preempt17320-21netstat19:11:270
81550rcu_preempt17140-21ssh22:09:571
81550rcu_preempt0-21swapper/123:32:181
81550rcu_preempt0-21swapper/122:26:201
81550rcu_preempt0-21swapper/122:25:051
81550rcu_preempt0-21swapper/121:58:311
81550rcu_preempt0-21swapper/120:39:001
81550rcu_preempt0-21swapper/120:21:291
81550rcu_preempt0-21swapper/119:55:041
81550rcu_preempt0-21swapper/119:40:221
81550rcu_preempt0-21swapper/100:10:531
81550rcu_preempt0-21swapper/020:50:430
81550rcu_preempt0-21swapper/019:22:360
81540rcu_preempt9312-21ssh23:48:581
81540rcu_preempt8250-21sshd20:43:411
81540rcu_preempt4492-21ssh21:46:551
81540rcu_preempt27324-21ssh00:21:171
81540rcu_preempt25534-21ssh21:28:111
81540rcu_preempt19-21ksoftirqd/123:10:241
81540rcu_preempt0-21swapper/123:53:541
81540rcu_preempt0-21swapper/122:36:141
81540rcu_preempt0-21swapper/122:36:141
81540rcu_preempt0-21swapper/121:39:091
81540rcu_preempt0-21swapper/121:17:121
81540rcu_preempt0-21swapper/120:18:401
81540rcu_preempt0-21swapper/100:34:491
81540rcu_preempt0-21swapper/019:59:390
81540rcu_preempt0-21swapper/019:33:590
81530rcu_preempt15933-21ssh23:03:391
81530rcu_preempt0-21swapper/123:21:431
81530rcu_preempt0-21swapper/122:48:451
81520rcu_preempt25714-21df19:46:190
81520rcu_preempt0-21swapper/120:53:471
81520rcu_preempt0-21swapper/120:26:561
81520rcu_preempt0-21swapper/119:41:211
16515995248cyclictest945-21usb-storage20:59:171
81510rcu_preempt0-21swapper/121:01:291
81510rcu_preempt0-21swapper/120:31:111
81510rcu_preempt0-21swapper/120:03:161
81510rcu_preempt0-21swapper/119:58:001
81500rcu_preempt0-21swapper/120:12:401
81500rcu_preempt0-21swapper/020:43:540
16514995047cyclictest945-21usb-storage19:41:210
81490rcu_preempt30106-21ntp_states20:01:280
16514994946cyclictest945-21usb-storage19:27:560
16515994239cyclictest945-21usb-storage19:31:021
16515994239cyclictest945-21usb-storage19:18:491
16515994238cyclictest945-21usb-storage19:11:371
89850410irq/17-ehci_hcd945-21usb-storage21:10:120
81370rcu_preempt19503-21if_can019:21:231
147950370irq/31-eth0-tx-19-21ksoftirqd/119:46:511
147950350irq/31-eth0-tx-0-21swapper/120:10:451
147950350irq/31-eth0-tx-0-21swapper/119:34:191
81320rcu_preempt19-21ksoftirqd/121:06:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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