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2026-05-11 - 08:46
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Mon May 11, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt3431-21open_files19:06:201
81740rcu_preempt0-21swapper/023:41:080
81720rcu_preempt12167-21sh21:27:270
81720rcu_preempt0-21swapper/000:01:230
81710rcu_preempt1832-21diskmemload21:40:040
81710rcu_preempt0-21swapper/020:26:190
81700rcu_preempt18638-21sh21:39:461
81700rcu_preempt0-21swapper/023:35:030
81700rcu_preempt0-21swapper/023:25:370
81700rcu_preempt0-21swapper/022:52:480
89950690irq/17-ehci_hcd111rcuc/023:59:240
89950690irq/17-ehci_hcd111rcuc/023:59:240
81690rcu_preempt25642-21sh23:49:041
81690rcu_preempt0-21swapper/123:43:081
81690rcu_preempt0-21swapper/123:37:441
81690rcu_preempt0-21swapper/021:22:130
81680rcu_preempt19591-21ssh23:37:180
81680rcu_preempt18770-21ssh22:36:320
81680rcu_preempt12797-21cpuspeed23:26:091
81680rcu_preempt11662-21sh23:23:121
81680rcu_preempt0-21swapper/123:33:111
81680rcu_preempt0-21swapper/122:59:141
81680rcu_preempt0-21swapper/121:17:031
81680rcu_preempt0-21swapper/100:27:471
81670rcu_preempt4038-21sh23:10:221
81670rcu_preempt0-21swapper/020:22:010
81660rcu_preempt5231-21tr00:11:191
81660rcu_preempt20328-21/usr/sbin/munin22:41:210
81660rcu_preempt0-21swapper/123:55:331
81660rcu_preempt0-21swapper/122:54:471
81660rcu_preempt0-21swapper/100:17:531
81660rcu_preempt0-21swapper/000:21:220
81650rcu_preempt9711-21cron23:20:570
81650rcu_preempt2659-21memory21:11:161
81650rcu_preempt2659-21memory21:11:161
81650rcu_preempt0-21swapper/123:15:581
81650rcu_preempt0-21swapper/119:21:171
81650rcu_preempt0-21swapper/020:06:240
81650rcu_preempt0-21swapper/019:16:170
81640rcu_preempt8055-21df_abs19:26:131
81640rcu_preempt679-21sed22:05:581
81640rcu_preempt25848-21cat21:51:241
81640rcu_preempt0-21swapper/121:27:591
81640rcu_preempt0-21swapper/021:31:220
81640rcu_preempt0-21swapper/021:06:140
81630rcu_preempt3790-21ssh22:11:130
81630rcu_preempt0-21swapper/023:26:090
81630rcu_preempt0-21swapper/020:46:100
146450630irq/29-eth0-rx-0-21swapper/021:56:100
81620rcu_preempt9574-21ssh21:22:401
81620rcu_preempt31231-21ssh23:01:021
81620rcu_preempt11944-21ssh00:23:561
81620rcu_preempt0-21swapper/122:22:111
81620rcu_preempt0-21swapper/022:23:250
81610rcu_preempt919-21ssh00:02:081
81610rcu_preempt4973-21ssh22:12:181
81610rcu_preempt32084-21rm22:03:151
81610rcu_preempt30564-21/usr/sbin/munin20:56:100
81610rcu_preempt22951-21/usr/sbin/munin22:46:171
81610rcu_preempt0-21swapper/122:30:471
81610rcu_preempt0-21swapper/121:57:571
81610rcu_preempt0-21swapper/120:51:141
81610rcu_preempt0-21swapper/120:26:211
81610rcu_preempt0-21swapper/100:06:291
81610rcu_preempt0-21swapper/023:13:300
81610rcu_preempt0-21swapper/022:05:590
89950600irq/17-ehci_hcd41ktimersoftd/023:53:320
81600rcu_preempt6071-21proc_pri19:16:201
81600rcu_preempt26638-21kworker/0:119:06:240
81600rcu_preempt16479-21ssh22:33:111
81600rcu_preempt0-21swapper/123:13:261
81600rcu_preempt0-21swapper/122:17:481
81600rcu_preempt0-21swapper/121:42:531
81600rcu_preempt0-21swapper/121:31:341
81600rcu_preempt0-21swapper/120:06:181
81600rcu_preempt0-21swapper/022:03:200
81600rcu_preempt0-21swapper/019:51:200
89950590irq/17-ehci_hcd16042-21/usr/sbin/munin00:31:170
81590rcu_preempt19491-21ssh00:36:331
81590rcu_preempt19091-21ssh22:37:321
81590rcu_preempt17784-21ssh00:34:521
81590rcu_preempt0-21swapper/123:58:271
81590rcu_preempt0-21swapper/123:58:271
81590rcu_preempt0-21swapper/120:46:181
81590rcu_preempt0-21swapper/120:21:151
81590rcu_preempt0-21swapper/119:51:191
81590rcu_preempt0-21swapper/021:48:030
81590rcu_preempt0-21swapper/021:41:210
81590rcu_preempt0-21swapper/020:16:200
81580rcu_preempt25281-21ssh22:50:000
81580rcu_preempt0-21swapper/119:57:471
81580rcu_preempt0-21swapper/019:40:580
81580rcu_preempt0-21swapper/000:18:250
81570rcu_preempt6218-21ssh00:12:570
81570rcu_preempt15984-21ssh22:31:380
81570rcu_preempt0-21swapper/122:41:491
81570rcu_preempt0-21swapper/121:46:301
81560rcu_preempt7060-21needreboot22:16:190
81560rcu_preempt3242-21ssh23:07:370
81560rcu_preempt29322-21ntp_states22:56:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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