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2026-03-10 - 10:08
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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 Tue Mar 10, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147850820irq/30-eth0-tx-0-21swapper/019:11:420
89850740irq/17-ehci_hcd8873-21latency_hist19:38:551
81730rcu_preempt8310-21ssh21:27:090
81720rcu_preempt26842-21ssh22:01:530
81710rcu_preempt24295-21ssh21:57:000
81710rcu_preempt2354-1kworker/0:1H22:20:460
81710rcu_preempt0-21swapper/023:42:470
81710rcu_preempt0-21swapper/023:19:120
81710rcu_preempt0-21swapper/022:38:160
81710rcu_preempt0-21swapper/000:39:120
81710rcu_preempt0-21swapper/000:23:290
81700rcu_preempt0-21swapper/023:55:140
81700rcu_preempt0-21swapper/023:25:210
89850690irq/17-ehci_hcd12564-21ssh22:35:071
81690rcu_preempt0-21swapper/122:07:521
81690rcu_preempt0-21swapper/121:59:131
81690rcu_preempt0-21swapper/121:49:141
81690rcu_preempt0-21swapper/121:22:131
81690rcu_preempt0-21swapper/120:19:211
81690rcu_preempt0-21swapper/021:49:110
81680rcu_preempt9997-21sh22:30:100
81680rcu_preempt0-21swapper/123:51:301
81680rcu_preempt0-21swapper/122:17:441
81670rcu_preempt0-21swapper/023:06:090
81670rcu_preempt0-21swapper/022:12:520
81660rcu_preempt4136-21latency_hist00:23:551
81660rcu_preempt0-21swapper/123:27:161
81660rcu_preempt0-21swapper/122:13:281
81660rcu_preempt0-21swapper/121:26:281
81660rcu_preempt0-21swapper/120:50:091
81650rcu_preempt2469-21sh22:16:510
81650rcu_preempt0-21swapper/123:06:531
81640rcu_preempt22708-21/usr/sbin/munin20:33:541
81640rcu_preempt1139-21kworker/1:219:09:171
81640rcu_preempt0-21swapper/121:31:191
81640rcu_preempt0-21swapper/023:44:140
81640rcu_preempt0-21swapper/021:19:220
81630rcu_preempt2366-21ssh23:18:181
81630rcu_preempt0-21swapper/120:24:071
81630rcu_preempt0-21swapper/120:24:071
81630rcu_preempt0-21swapper/100:04:081
81630rcu_preempt0-21swapper/000:04:130
81620rcu_preempt29940-21ssh23:09:090
81620rcu_preempt20545-21ssh22:50:031
81620rcu_preempt15560-21ssh21:39:271
81620rcu_preempt14488-21ssh00:43:501
81620rcu_preempt0-21swapper/122:58:161
81620rcu_preempt0-21swapper/121:55:481
81620rcu_preempt0-21swapper/021:42:580
81620rcu_preempt0-21swapper/000:25:340
81610rcu_preempt9236-21ssh23:29:341
81610rcu_preempt25451-21rm00:01:051
81610rcu_preempt24103-21apt-esm-hook20:39:081
81610rcu_preempt0-21swapper/123:12:021
81610rcu_preempt0-21swapper/123:00:161
81610rcu_preempt0-21swapper/122:39:141
81610rcu_preempt0-21swapper/100:16:161
81610rcu_preempt0-21swapper/021:34:420
81610rcu_preempt0-21swapper/021:29:200
81610rcu_preempt0-21swapper/019:19:130
81610rcu_preempt0-21swapper/000:31:300
89850600irq/17-ehci_hcd945-21usb-storage22:26:161
81600rcu_preempt2138-21snmpd00:36:281
81600rcu_preempt0-21swapper/122:29:131
81600rcu_preempt0-21swapper/122:19:131
81600rcu_preempt0-21swapper/121:37:131
81600rcu_preempt0-21swapper/121:10:271
81600rcu_preempt0-21swapper/023:53:170
81590rcu_preempt5955-21ssh00:26:161
81590rcu_preempt2195-21ssh21:15:261
81590rcu_preempt20379-21ssh22:49:270
81590rcu_preempt18520-21ssh22:46:571
81590rcu_preempt10295-21ntp_states00:34:180
81590rcu_preempt0-21swapper/123:19:141
81590rcu_preempt0-21swapper/121:46:201
81590rcu_preempt0-21swapper/119:59:221
81590rcu_preempt0-21swapper/119:14:171
81590rcu_preempt0-21swapper/100:12:531
81590rcu_preempt0-21swapper/023:34:110
81590rcu_preempt0-21swapper/022:24:160
81580rcu_preempt393-21diskmemload22:44:060
81580rcu_preempt23543-21ntpq20:34:151
81580rcu_preempt2110-21ssh21:15:110
81580rcu_preempt17653-21munin-run20:13:540
81580rcu_preempt14931-21ssh23:41:401
81580rcu_preempt10209-21ssh23:33:070
81580rcu_preempt0-21swapper/123:54:591
81580rcu_preempt0-21swapper/123:35:201
81580rcu_preempt0-21swapper/121:04:151
81580rcu_preempt0-21swapper/120:47:441
81580rcu_preempt0-21swapper/119:24:181
81580rcu_preempt0-21swapper/119:19:141
81580rcu_preempt0-21swapper/100:29:221
81570rcu_preempt393-21diskmemload21:47:480
81570rcu_preempt32608-21ssh00:14:580
81570rcu_preempt30610-21ssh00:10:550
81570rcu_preempt23089-21df20:34:090
81570rcu_preempt17845-21cpuspeed20:14:071
81570rcu_preempt17322-21processes20:09:171
81570rcu_preempt17017-21ssh23:44:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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