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2026-04-01 - 19:04
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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 Wed Apr 01, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850760irq/17-ehci_hcd29725-21ssh10:25:571
81740rcu_preempt23361-21diskmemload12:05:080
89850730irq/17-ehci_hcd181ktimersoftd/110:09:241
89850720irq/17-ehci_hcd945-21usb-storage10:53:540
81710rcu_preempt3-21ksoftirqd/010:08:090
81710rcu_preempt0-21swapper/010:42:470
81710rcu_preempt0-21swapper/009:23:470
81700rcu_preempt23361-21diskmemload09:53:490
81700rcu_preempt0-21swapper/010:56:230
81690rcu_preempt8668-21sh10:48:470
81690rcu_preempt24558-21if_can107:10:131
81690rcu_preempt23558-21apt-get09:15:060
81690rcu_preempt0-21swapper/109:27:481
81690rcu_preempt0-21swapper/012:41:130
81680rcu_preempt4452-21grep10:40:161
81680rcu_preempt26357-21apt-get09:20:071
81680rcu_preempt0-21swapper/112:24:271
81680rcu_preempt0-21swapper/111:38:111
81680rcu_preempt0-21swapper/110:33:151
81680rcu_preempt0-21swapper/107:25:161
81680rcu_preempt0-21swapper/011:16:490
81660rcu_preempt24954-21ntp_states07:10:180
81650rcu_preempt22143-21ssh12:15:211
81650rcu_preempt14575-21ssh12:00:491
81650rcu_preempt0-21swapper/110:18:421
81650rcu_preempt0-21swapper/009:38:330
81640rcu_preempt7187-21cpuspeed_turbos08:10:090
81640rcu_preempt32142-21memory12:35:160
81640rcu_preempt12568-21latency_hist09:54:551
81640rcu_preempt0-21swapper/012:15:530
81640rcu_preempt0-21swapper/011:42:480
81640rcu_preempt0-21swapper/011:38:560
81630rcu_preempt28730-21cron12:29:550
81630rcu_preempt22161-21ssh11:14:561
81630rcu_preempt17818-21ssh12:07:551
81630rcu_preempt0-21swapper/011:03:490
81630rcu_preempt0-21swapper/009:45:060
81620rcu_preempt31419-21ssh11:30:591
81620rcu_preempt29989-21/usr/sbin/munin09:25:180
81620rcu_preempt20892-21ssh11:10:481
81620rcu_preempt19271-21ssh11:09:191
81620rcu_preempt17120-21ssh10:03:071
81620rcu_preempt16811-21ssh11:04:461
81620rcu_preempt1222-21ssh10:34:591
81620rcu_preempt0-21swapper/112:43:461
81620rcu_preempt0-21swapper/110:22:181
81620rcu_preempt0-21swapper/109:39:181
81620rcu_preempt0-21swapper/108:50:501
81620rcu_preempt0-21swapper/008:05:180
81610rcu_preempt26294-21ssh11:21:191
81610rcu_preempt19-21ksoftirqd/109:30:261
81610rcu_preempt15108-21ssh09:59:541
81610rcu_preempt12214-21ssh11:56:211
81610rcu_preempt10383-21ssh11:54:051
81610rcu_preempt0-21swapper/110:58:401
81610rcu_preempt0-21swapper/109:45:361
81610rcu_preempt0-21swapper/109:15:161
81610rcu_preempt0-21swapper/108:45:111
81610rcu_preempt0-21swapper/108:20:201
81610rcu_preempt0-21swapper/107:45:081
89450600irq/17-ehci_hcd31749-21latency_hist07:39:550
81600rcu_preempt29353-21ssh11:28:051
81600rcu_preempt28543-21df_abs10:25:130
81600rcu_preempt0-21swapper/112:38:021
81600rcu_preempt0-21swapper/112:27:201
81600rcu_preempt0-21swapper/111:47:181
81600rcu_preempt0-21swapper/107:50:081
81600rcu_preempt0-21swapper/011:28:040
81590rcu_preempt4474-21ssh11:41:341
81590rcu_preempt23361-21diskmemload10:02:370
81590rcu_preempt21994-21ssh11:14:510
81590rcu_preempt0-21swapper/112:31:031
81590rcu_preempt0-21swapper/110:50:141
81590rcu_preempt0-21swapper/110:10:201
81590rcu_preempt0-21swapper/108:25:171
81590rcu_preempt0-21swapper/107:35:221
81590rcu_preempt0-21swapper/012:20:090
81590rcu_preempt0-21swapper/010:35:350
81590rcu_preempt0-21swapper/010:30:550
81590rcu_preempt0-21swapper/009:05:120
81590rcu_preempt0-21swapper/007:20:180
81580rcu_preempt31765-21ssh11:32:130
81580rcu_preempt20143-21ssh12:11:561
81580rcu_preempt0-21swapper/109:41:531
81580rcu_preempt0-21swapper/108:00:141
81580rcu_preempt0-21swapper/107:34:501
81580rcu_preempt0-21swapper/107:21:271
81580rcu_preempt0-21swapper/107:15:131
81580rcu_preempt0-21swapper/011:57:040
81580rcu_preempt0-21swapper/010:11:330
89450570irq/17-ehci_hcd23361-21diskmemload12:01:050
81570rcu_preempt4343-21wc07:55:200
81570rcu_preempt2138-21snmpd09:04:390
81570rcu_preempt19393-21switchtime08:55:190
81570rcu_preempt0-21swapper/110:45:441
81570rcu_preempt0-21swapper/109:05:481
81570rcu_preempt0-21swapper/011:08:040
81570rcu_preempt0-21swapper/010:16:400
81570rcu_preempt0-21swapper/009:58:150
81570rcu_preempt0-21swapper/008:50:180
89850560irq/17-ehci_hcd945-21usb-storage10:21:450
81560rcu_preempt5470-21wc11:44:560
81560rcu_preempt31006-21ssh12:33:370
81560rcu_preempt0-21swapper/108:33:531
81560rcu_preempt0-21swapper/107:40:171
81560rcu_preempt0-21swapper/009:44:420
81560rcu_preempt0-21swapper/008:36:360
81550rcu_preempt26695-21ssh11:22:480
81550rcu_preempt0-21swapper/108:14:241
81550rcu_preempt0-21swapper/011:50:210
81550rcu_preempt0-21swapper/007:50:150
81540rcu_preempt29425-21egrep07:30:080
81540rcu_preempt23361-21diskmemload09:33:240
81540rcu_preempt19549-21sshd08:59:241
81540rcu_preempt0-21swapper/012:14:500
81540rcu_preempt0-21swapper/008:40:080
81540rcu_preempt0-21swapper/008:22:250
81540rcu_preempt0-21swapper/007:35:120
81530rcu_preempt0-21swapper/109:02:571
81530rcu_preempt0-21swapper/008:19:340
81530rcu_preempt0-21swapper/007:46:010
81530rcu_preempt0-21swapper/007:25:000
89850520irq/17-ehci_hcd945-21usb-storage08:40:101
81520rcu_preempt16803-21mailstats08:45:170
81520rcu_preempt0-21swapper/007:17:480
81500rcu_preempt11029-21df08:25:090
25388995046cyclictest945-21usb-storage09:10:161
89850480irq/17-ehci_hcd181ktimersoftd/107:55:091
25388994844cyclictest945-21usb-storage08:35:151
81470rcu_preempt0-21swapper/009:13:330
25388994743cyclictest945-21usb-storage08:05:171
81450rcu_preempt12766-21needreboot08:30:160
25388994340cyclictest945-21usb-storage08:16:181
89850350irq/17-ehci_hcd0-21swapper/008:01:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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