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2025-12-08 - 06:22
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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 Dec 08, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt30759-21timerwakeupswit21:10:091
81750rcu_preempt5136-21rm00:27:121
81750rcu_preempt0-21swapper/119:05:071
81720rcu_preempt4077-21grep19:25:111
81720rcu_preempt17217-21fgrep21:45:071
81720rcu_preempt0-21swapper/123:05:531
81710rcu_preempt19249-21df_inode21:49:571
81710rcu_preempt0-21swapper/123:57:451
81690rcu_preempt3291-21diskmemload21:20:000
81690rcu_preempt31363-21ssh21:11:530
81690rcu_preempt19-21ksoftirqd/123:04:351
81690rcu_preempt16275-21ssh23:45:550
81690rcu_preempt10860-21sh00:38:470
81690rcu_preempt0-21swapper/119:35:031
81690rcu_preempt0-21swapper/023:39:180
81690rcu_preempt0-21swapper/000:13:320
89650680irq/17-ehci_hcd6819-21ntp_states00:30:040
81680rcu_preempt0-21swapper/122:09:401
81680rcu_preempt0-21swapper/022:58:270
81680rcu_preempt0-21swapper/022:58:270
81680rcu_preempt0-21swapper/021:39:590
81680rcu_preempt0-21swapper/000:26:370
81670rcu_preempt8614-21latency_hist00:34:421
81670rcu_preempt29434-21diskmemload22:26:140
81670rcu_preempt29434-21diskmemload21:30:100
81670rcu_preempt27834-21munin-run00:09:420
81660rcu_preempt31086-21proc_pri19:05:050
81660rcu_preempt25044-21sh23:01:010
81660rcu_preempt15137-21ntp_offset20:10:070
81660rcu_preempt0-21swapper/023:09:400
81650rcu_preempt0-21swapper/021:25:350
90050640irq/17-ehci_hcd27165-21ssh00:07:031
81640rcu_preempt13376-21ssh23:40:080
81640rcu_preempt0-21swapper/122:50:001
81640rcu_preempt0-21swapper/022:39:450
81630rcu_preempt0-21swapper/023:49:580
81630rcu_preempt0-21swapper/021:54:460
81630rcu_preempt0-21swapper/000:19:530
81630rcu_preempt0-21swapper/000:19:530
81620rcu_preempt18151-21ssh22:49:420
81620rcu_preempt0-21swapper/023:19:540
81620rcu_preempt0-21swapper/022:01:520
81620rcu_preempt0-21swapper/020:29:570
81610rcu_preempt0-21swapper/021:54:350
81610rcu_preempt0-21swapper/020:20:050
81600rcu_preempt0-21swapper/019:15:020
81600rcu_preempt0-21swapper/000:18:120
81590rcu_preempt18701-21ssh21:49:230
81590rcu_preempt0-21swapper/021:35:490
81590rcu_preempt0-21swapper/021:00:000
81580rcu_preempt5100-21ps19:30:100
81580rcu_preempt28884-21/usr/sbin/munin23:10:030
81580rcu_preempt22051-21ssh23:57:210
81580rcu_preempt0-21swapper/022:32:120
81580rcu_preempt0-21swapper/022:08:230
81580rcu_preempt0-21swapper/000:04:420
81570rcu_preempt23116-21sshd20:44:060
81570rcu_preempt2248-21ssh22:18:531
81570rcu_preempt1605-21ssh23:19:331
81570rcu_preempt0-21swapper/123:38:131
81570rcu_preempt0-21swapper/123:25:011
81570rcu_preempt0-21swapper/122:57:301
81570rcu_preempt0-21swapper/122:57:301
81570rcu_preempt0-21swapper/122:41:311
81570rcu_preempt0-21swapper/100:19:231
81570rcu_preempt0-21swapper/022:35:380
81570rcu_preempt0-21swapper/022:13:150
81570rcu_preempt0-21swapper/021:18:150
81570rcu_preempt0-21swapper/021:18:150
81570rcu_preempt0-21swapper/019:40:020
81570rcu_preempt0-21swapper/019:35:080
81560rcu_preempt4929-21ssh22:24:251
81560rcu_preempt3619-21ssh23:22:211
81560rcu_preempt13212-21ssh21:38:431
81560rcu_preempt0-21swapper/123:54:271
81560rcu_preempt0-21swapper/123:45:401
81560rcu_preempt0-21swapper/123:11:061
81560rcu_preempt0-21swapper/122:49:151
81560rcu_preempt0-21swapper/122:26:311
81560rcu_preempt0-21swapper/122:11:101
81560rcu_preempt0-21swapper/122:00:351
81560rcu_preempt0-21swapper/121:33:311
81560rcu_preempt0-21swapper/121:21:531
81560rcu_preempt0-21swapper/120:56:531
81560rcu_preempt0-21swapper/120:53:501
81560rcu_preempt0-21swapper/120:25:041
81560rcu_preempt0-21swapper/100:38:501
81560rcu_preempt0-21swapper/100:23:061
81560rcu_preempt0-21swapper/100:23:061
81560rcu_preempt0-21swapper/100:00:431
81560rcu_preempt0-21swapper/023:16:150
81550rcu_preempt1862-21ssh22:17:370
81550rcu_preempt15626-21ssh21:42:481
81550rcu_preempt1438-21ssh21:15:341
81550rcu_preempt1438-21ssh21:15:341
81550rcu_preempt0-21swapper/121:26:541
81550rcu_preempt0-21swapper/121:00:241
81550rcu_preempt0-21swapper/120:02:131
81550rcu_preempt0-21swapper/119:19:491
81550rcu_preempt0-21swapper/023:30:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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