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2026-03-15 - 02:59
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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 Sun Mar 15, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1479501060irq/31-eth0-tx-181ktimersoftd/122:15:351
81850rcu_preempt19-21ksoftirqd/121:50:421
89850810irq/17-ehci_hcd945-21usb-storage00:42:591
81810rcu_preempt0-21swapper/121:48:191
81790rcu_preempt0-21swapper/122:24:391
81780rcu_preempt7521-21ssh21:35:531
89050760irq/17-ehci_hcd945-21usb-storage21:20:300
81760rcu_preempt9509-21latency_hist20:04:081
81750rcu_preempt7129-21cpuspeed19:54:201
81750rcu_preempt4604-21diskstats23:34:240
81740rcu_preempt12012-21sh23:49:021
81730rcu_preempt9145-21ssh23:43:211
81730rcu_preempt31438-21ssh00:28:180
81730rcu_preempt13719-21/usr/sbin/munin21:49:080
81720rcu_preempt24469-1kworker/0:0H00:18:010
81720rcu_preempt22924-21ssh00:09:231
81720rcu_preempt13219-21sshd20:14:381
81720rcu_preempt0-21swapper/120:09:081
81720rcu_preempt0-21swapper/100:24:341
81710rcu_preempt24063-21diskmemload22:08:381
81710rcu_preempt0-21swapper/121:14:331
81710rcu_preempt0-21swapper/120:39:271
81700rcu_preempt4769-21ssh22:33:290
81700rcu_preempt4134-21diskmemload23:34:060
81700rcu_preempt3950-1kworker/1:2H00:33:461
81700rcu_preempt3950-1kworker/1:2H00:18:551
81700rcu_preempt31732-21ssh22:23:000
81700rcu_preempt28852-21apt-get23:19:231
81700rcu_preempt18731-21ssh21:58:110
81700rcu_preempt0-21swapper/122:55:271
81700rcu_preempt0-21swapper/122:52:201
81700rcu_preempt0-21swapper/122:34:231
81700rcu_preempt0-21swapper/121:04:191
81700rcu_preempt0-21swapper/119:44:181
81690rcu_preempt1493-21ssh22:26:060
81680rcu_preempt9745-21df20:04:210
81680rcu_preempt27200-21diskmemload21:39:020
81680rcu_preempt23484-21apt-get20:59:180
81680rcu_preempt0-21swapper/122:03:071
81680rcu_preempt0-21swapper/121:26:541
81680rcu_preempt0-21swapper/121:19:481
81680rcu_preempt0-21swapper/119:29:271
81680rcu_preempt0-21swapper/022:46:530
81670rcu_preempt27200-21diskmemload22:02:250
81670rcu_preempt22573-21ssh23:06:290
81670rcu_preempt14805-21apt-get23:54:191
81670rcu_preempt0-21swapper/123:34:461
81670rcu_preempt0-21swapper/122:41:571
81670rcu_preempt0-21swapper/122:11:221
81670rcu_preempt0-21swapper/120:26:211
81670rcu_preempt0-21swapper/100:38:451
81670rcu_preempt0-21swapper/100:04:041
81660rcu_preempt0-21swapper/123:31:151
81660rcu_preempt0-21swapper/123:00:171
81660rcu_preempt0-21swapper/122:31:591
81650rcu_preempt26075-21apt-get21:09:181
81650rcu_preempt23365-21latency_hist20:59:070
81650rcu_preempt0-21swapper/123:52:521
81650rcu_preempt0-21swapper/122:47:491
81650rcu_preempt0-21swapper/121:57:241
81650rcu_preempt0-21swapper/121:31:551
81650rcu_preempt0-21swapper/100:20:551
81650rcu_preempt0-21swapper/100:04:091
81640rcu_preempt0-21swapper/123:15:271
81640rcu_preempt0-21swapper/119:10:101
81630rcu_preempt0-21swapper/123:13:511
81630rcu_preempt0-21swapper/120:21:401
81620rcu_preempt10042-21ssh21:40:121
81620rcu_preempt0-21swapper/120:58:441
81610rcu_preempt29629-21rm21:17:500
81610rcu_preempt1398-21ssh23:28:491
81610rcu_preempt0-21swapper/120:59:261
89050600irq/17-ehci_hcd945-21usb-storage21:30:360
81600rcu_preempt3-21ksoftirqd/023:52:540
81600rcu_preempt3-21ksoftirqd/022:07:580
81600rcu_preempt21551-21ssh00:05:430
81600rcu_preempt0-21swapper/119:34:301
81590rcu_preempt27200-21diskmemload23:22:340
81590rcu_preempt27200-21diskmemload22:36:070
81590rcu_preempt26397-21kworker/0:219:09:250
81590rcu_preempt24853-21ssh23:10:200
81590rcu_preempt0-21swapper/123:07:011
81590rcu_preempt0-21swapper/119:19:271
81580rcu_preempt6273-21ssh00:40:390
81580rcu_preempt32534-21cut19:24:281
81580rcu_preempt27765-21ssh23:15:560
81580rcu_preempt0-21swapper/122:19:511
81570rcu_preempt0-21swapper/120:13:381
81570rcu_preempt0-21swapper/120:13:381
81570rcu_preempt0-21swapper/119:49:301
81560rcu_preempt27200-21diskmemload00:01:210
81560rcu_preempt0-21swapper/120:51:491
81560rcu_preempt0-21swapper/120:30:041
81550rcu_preempt27200-21diskmemload23:42:290
81550rcu_preempt27200-21diskmemload22:58:000
81550rcu_preempt0-21swapper/120:44:341
81550rcu_preempt0-21swapper/020:29:250
81540rcu_preempt24006-21ssh00:10:190
81540rcu_preempt0-21swapper/023:02:370
81540rcu_preempt0-21swapper/020:19:260
81530rcu_preempt2138-21snmpd19:40:400
81530rcu_preempt0-21swapper/000:24:060
29206995350cyclictest181ktimersoftd/119:17:191
29206995345cyclictest181ktimersoftd/119:40:301
81520rcu_preempt1617-21ssh00:33:090
81520rcu_preempt0-21swapper/022:14:420
29206995243cyclictest181ktimersoftd/120:38:151
29205995249cyclictest945-21usb-storage00:36:260
29205995248cyclictest945-21usb-storage21:27:400
29205995248cyclictest945-21usb-storage21:09:200
81510rcu_preempt25029-21ssh22:09:270
81510rcu_preempt0-21swapper/020:34:140
29205995148cyclictest945-21usb-storage22:40:530
29205995148cyclictest945-21usb-storage21:39:570
29205995147cyclictest945-21usb-storage21:52:450
81500rcu_preempt0-21swapper/020:27:180
81500rcu_preempt0-21swapper/019:57:130
29205995047cyclictest945-21usb-storage23:55:160
29205995047cyclictest945-21usb-storage23:44:530
29205995047cyclictest945-21usb-storage22:49:210
29205995047cyclictest945-21usb-storage20:52:590
29205995047cyclictest945-21usb-storage19:16:230
29205995046cyclictest945-21usb-storage20:44:290
147650500irq/28-eth0-rx-30595-21apt-get19:19:220
29205994946cyclictest945-21usb-storage21:04:230
29205994946cyclictest945-21usb-storage19:38:590
29205994845cyclictest945-21usb-storage20:42:590
29205994845cyclictest945-21usb-storage20:17:170
29205994845cyclictest945-21usb-storage19:31:590
81460rcu_preempt32602-21ntp_states19:24:290
29205994642cyclictest945-21usb-storage23:24:080
29205994239cyclictest945-21usb-storage19:44:240
29205994238cyclictest945-21usb-storage20:09:300
29205994238cyclictest945-21usb-storage20:09:300
89850380irq/17-ehci_hcd0-21swapper/019:52:260
81330rcu_preempt3-21ksoftirqd/019:59:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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