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2026-04-15 - 07:59
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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 highest latencies:
System rackcslot3.osadl.org (updated Wed Apr 15, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt0-21swapper/023:07:290
81770rcu_preempt11639-21needreboot21:50:520
81740rcu_preempt9930-21rm22:50:380
81740rcu_preempt6793-21nfs4_client23:45:530
81740rcu_preempt0-21swapper/119:11:541
81730rcu_preempt32368-21if_can122:30:481
81730rcu_preempt0-21swapper/019:10:460
81720rcu_preempt1747-21ssh23:35:550
81710rcu_preempt8753-21sh22:46:501
81710rcu_preempt6175-21ssh22:42:050
81710rcu_preempt30804-21apt-get00:35:431
81710rcu_preempt29894-21sh21:24:501
81710rcu_preempt24974-21ssh00:23:380
81710rcu_preempt18019-21ssh22:03:170
81710rcu_preempt14373-21ssh22:58:590
81710rcu_preempt0-21swapper/021:57:360
89850700irq/17-ehci_hcd497-21latency_hist19:40:311
89850700irq/17-ehci_hcd497-21latency_hist19:40:311
81700rcu_preempt9956-21apt-get22:50:441
81700rcu_preempt9165-21ssh22:48:220
81700rcu_preempt7666-21diskmemload21:43:341
81700rcu_preempt5585-21ssh23:44:250
81700rcu_preempt27094-21ssh23:22:250
81700rcu_preempt27075-21if_err_can022:20:491
81700rcu_preempt23195-21ssh00:20:030
81700rcu_preempt19012-21ssh00:10:430
81700rcu_preempt18090-21sh22:03:331
81690rcu_preempt28211-21ssh22:22:190
81690rcu_preempt24504-21ssh22:15:461
81690rcu_preempt23102-21ssh22:12:290
81690rcu_preempt20438-21ssh22:07:330
81690rcu_preempt16322-21ssh00:05:340
81690rcu_preempt16096-21sh00:05:211
81690rcu_preempt14068-21ntpq20:30:530
81690rcu_preempt12675-21ssh23:56:530
81690rcu_preempt12675-21ssh23:56:530
81690rcu_preempt10522-21ssh21:49:470
81680rcu_preempt5495-21ssh21:40:220
81680rcu_preempt32140-21ssh00:36:430
81680rcu_preempt32084-21ssh23:31:470
81680rcu_preempt32001-21ssh22:30:400
81680rcu_preempt30104-21ssh23:29:050
81680rcu_preempt29533-21ssh00:31:430
81680rcu_preempt26753-21ssh00:26:210
81680rcu_preempt26398-21ssh21:17:190
81680rcu_preempt2477-21ssh21:34:200
81680rcu_preempt22748-21ssh00:17:381
81680rcu_preempt22484-21ssh23:14:590
81680rcu_preempt2231-21ssh00:41:410
81680rcu_preempt16547-21ssh23:02:210
81680rcu_preempt10204-21ssh23:52:220
81680rcu_preempt0-21swapper/121:57:111
81680rcu_preempt0-21swapper/021:45:120
81670rcu_preempt3545-21ssh22:36:540
81670rcu_preempt29781-21ssh21:24:280
81670rcu_preempt29298-21ssh22:25:350
81670rcu_preempt25636-21ssh22:17:070
81670rcu_preempt15450-21ssh00:02:580
81670rcu_preempt0-21swapper/023:15:480
81670rcu_preempt0-21swapper/021:26:060
81670rcu_preempt0-21swapper/021:09:410
81660rcu_preempt0-21swapper/123:37:511
81660rcu_preempt0-21swapper/122:28:371
81660rcu_preempt0-21swapper/020:58:270
81660rcu_preempt0-21swapper/019:44:310
81660rcu_preempt0-21swapper/019:44:310
81660rcu_preempt0-21swapper/019:17:300
81650rcu_preempt7136-21munin-run22:45:311
81650rcu_preempt6293-21ssh23:45:451
81650rcu_preempt0-21swapper/123:58:251
81650rcu_preempt0-21swapper/123:58:251
81650rcu_preempt0-21swapper/123:17:521
81650rcu_preempt0-21swapper/100:20:561
81650rcu_preempt0-21swapper/100:08:511
81650rcu_preempt0-21swapper/021:10:340
81650rcu_preempt0-21swapper/020:52:010
81650rcu_preempt0-21swapper/020:46:130
81650rcu_preempt0-21swapper/020:40:400
81650rcu_preempt0-21swapper/020:28:400
81650rcu_preempt0-21swapper/020:19:530
81650rcu_preempt0-21swapper/020:14:450
81650rcu_preempt0-21swapper/020:00:390
81650rcu_preempt0-21swapper/019:53:460
81650rcu_preempt0-21swapper/019:46:070
81650rcu_preempt0-21swapper/019:33:510
81650rcu_preempt0-21swapper/019:26:010
81640rcu_preempt0-21swapper/123:54:051
81640rcu_preempt0-21swapper/121:05:521
81640rcu_preempt0-21swapper/120:52:321
81640rcu_preempt0-21swapper/021:02:550
81640rcu_preempt0-21swapper/019:21:230
81630rcu_preempt0-21swapper/123:42:591
81630rcu_preempt0-21swapper/123:35:121
81630rcu_preempt0-21swapper/122:36:021
81630rcu_preempt0-21swapper/120:55:491
81630rcu_preempt0-21swapper/120:45:561
81630rcu_preempt0-21swapper/119:56:461
81630rcu_preempt0-21swapper/119:15:491
81630rcu_preempt0-21swapper/100:25:551
81620rcu_preempt0-21swapper/123:10:491
81610rcu_preempt11902-21users20:20:580
81610rcu_preempt0-21swapper/121:05:311
81600rcu_preempt0-21swapper/100:12:321
81590rcu_preempt20511-21ssh22:07:471
81590rcu_preempt0-21swapper/121:20:311
81590rcu_preempt0-21swapper/120:25:441
89850570irq/17-ehci_hcd945-21usb-storage19:20:531
81570rcu_preempt0-21swapper/019:56:420
81570rcu_preempt0-21swapper/019:36:310
2665699562cyclictest24567-21diskmemload23:24:181
81550rcu_preempt0-21swapper/122:13:031
2665699551cyclictest24567-21diskmemload21:34:081
89850540irq/17-ehci_hcd945-21usb-storage20:05:531
81540rcu_preempt0-21swapper/122:58:071
81540rcu_preempt0-21swapper/121:39:411
147950540irq/31-eth0-tx-0-21swapper/121:54:411
81530rcu_preempt28288-21grep00:30:451
81530rcu_preempt0-21swapper/119:25:551
81520rcu_preempt31014-21cut21:25:521
81520rcu_preempt0-21swapper/119:40:311
2665699522cyclictest13351-21/usr/sbin/munin20:30:481
89850510irq/17-ehci_hcd0-21swapper/120:20:371
81510rcu_preempt24003-21cat21:10:521
81510rcu_preempt0-21swapper/120:35:531
81500rcu_preempt10079-21ssh21:48:081
81500rcu_preempt0-21swapper/123:00:471
81500rcu_preempt0-21swapper/120:15:461
81500rcu_preempt0-21swapper/100:42:331
2665699502cyclictest24567-21diskmemload23:08:191
81490rcu_preempt4384-21munin-run19:55:311
81480rcu_preempt0-21swapper/119:45:501
2665699481cyclictest147650irq/28-eth0-rx-23:28:061
26655994744cyclictest945-21usb-storage20:05:440
81460rcu_preempt16554-21nfs4_client20:40:531
81460rcu_preempt0-21swapper/120:11:171
89850450irq/17-ehci_hcd0-21swapper/119:30:471
81450rcu_preempt0-21swapper/120:00:441
89850420irq/17-ehci_hcd945-21usb-storage20:38:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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