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2026-05-18 - 19:24
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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 Mon May 18, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt23854-21needreboot08:11:581
81750rcu_preempt0-21swapper/107:07:001
81740rcu_preempt3049-21mailstats08:57:011
81720rcu_preempt5847-21diskmemload09:36:510
81720rcu_preempt29144-21/usr/sbin/munin11:52:031
81720rcu_preempt0-21swapper/107:36:541
81710rcu_preempt6043-1kworker/1:1H10:25:091
81710rcu_preempt5847-21diskmemload12:05:530
81710rcu_preempt19-21ksoftirqd/109:31:251
81710rcu_preempt0-21swapper/112:26:551
81710rcu_preempt0-21swapper/107:42:011
81710rcu_preempt0-21swapper/011:40:420
81710rcu_preempt0-21swapper/010:08:530
81700rcu_preempt3900-21ssh10:05:190
81700rcu_preempt0-21swapper/111:48:221
81700rcu_preempt0-21swapper/110:11:541
81700rcu_preempt0-21swapper/010:26:550
89950690irq/17-ehci_hcd30198-21ssh09:53:250
81690rcu_preempt18121-21memory09:31:550
81690rcu_preempt11789-21sh11:18:411
81690rcu_preempt0-21swapper/112:37:031
81690rcu_preempt0-21swapper/112:37:031
81690rcu_preempt0-21swapper/112:32:341
81690rcu_preempt0-21swapper/109:23:391
81690rcu_preempt0-21swapper/108:47:021
81690rcu_preempt0-21swapper/011:29:170
81690rcu_preempt0-21swapper/010:00:150
81680rcu_preempt0-21swapper/111:08:411
81670rcu_preempt8240-21ntp_states11:11:581
81670rcu_preempt1472-21munin-run10:01:361
81670rcu_preempt13761-21ntp_kernel_pll_07:31:571
81670rcu_preempt0-21swapper/110:21:141
81670rcu_preempt0-21swapper/110:08:251
81660rcu_preempt31142-21sh11:54:470
81660rcu_preempt30169-21ssh09:53:191
81660rcu_preempt19776-21ssh11:32:541
81660rcu_preempt19-21ksoftirqd/107:16:531
81660rcu_preempt15494-21ssh12:26:111
81660rcu_preempt15092-21sh12:24:550
81660rcu_preempt0-21swapper/010:55:000
81650rcu_preempt883-21ssh11:57:581
81650rcu_preempt27601-21ssh09:48:501
81650rcu_preempt21924-21ssh09:38:271
81650rcu_preempt19906-21ssh09:35:511
81650rcu_preempt19415-21cat07:56:351
81650rcu_preempt19-21ksoftirqd/110:01:481
81650rcu_preempt15318-21ssh11:26:011
81650rcu_preempt0-21swapper/112:18:041
81640rcu_preempt6802-21ssh12:09:161
81640rcu_preempt6264-21ssh09:11:511
81640rcu_preempt3860-21ssh12:03:371
81640rcu_preempt30081-21ssh10:52:111
81640rcu_preempt26136-21ssh10:46:461
81640rcu_preempt25218-21ssh09:45:151
81640rcu_preempt22571-21ssh10:39:041
81640rcu_preempt2192-21snmpd07:24:161
81640rcu_preempt19514-21ssh10:33:031
81640rcu_preempt1893-21ssh11:01:411
81640rcu_preempt18193-21ssh11:31:331
81640rcu_preempt16893-21ssh10:28:121
81640rcu_preempt10235-21ssh09:17:171
81640rcu_preempt0-21swapper/111:38:241
81640rcu_preempt0-21swapper/108:21:561
81640rcu_preempt0-21swapper/107:52:001
146650640irq/31-eth0-tx-41ktimersoftd/009:31:300
81630rcu_preempt8294-21ssh12:11:571
81630rcu_preempt2192-21snmpd08:29:301
81630rcu_preempt20710-21wc08:01:491
81630rcu_preempt19-21ksoftirqd/107:11:501
81630rcu_preempt0-21swapper/111:41:501
81630rcu_preempt0-21swapper/111:01:291
81630rcu_preempt0-21swapper/108:43:341
81630rcu_preempt0-21swapper/108:11:351
81630rcu_preempt0-21swapper/012:16:470
81630rcu_preempt0-21swapper/007:06:530
81620rcu_preempt25143-21ssh10:43:411
81620rcu_preempt0-21swapper/109:06:541
81620rcu_preempt0-21swapper/109:01:541
81620rcu_preempt0-21swapper/010:34:320
81620rcu_preempt0-21swapper/010:16:550
81620rcu_preempt0-21swapper/009:22:420
81620rcu_preempt0-21swapper/009:01:360
81610rcu_preempt6581-21irqstats09:11:560
81610rcu_preempt0-21swapper/107:48:091
81610rcu_preempt0-21swapper/107:31:321
81610rcu_preempt0-21swapper/012:08:140
81610rcu_preempt0-21swapper/008:41:550
81600rcu_preempt0-21swapper/012:11:500
81600rcu_preempt0-21swapper/010:41:470
81600rcu_preempt0-21swapper/008:19:290
81590rcu_preempt0-21swapper/011:18:130
81590rcu_preempt0-21swapper/011:16:360
81590rcu_preempt0-21swapper/009:49:450
81590rcu_preempt0-21swapper/008:33:300
81580rcu_preempt17187-21ssh12:27:330
81580rcu_preempt0-21swapper/011:23:580
81580rcu_preempt0-21swapper/010:13:450
81570rcu_preempt22531-21ssh10:38:540
81570rcu_preempt0-21swapper/011:00:210
81570rcu_preempt0-21swapper/009:44:060
81560rcu_preempt6589-21ssh11:09:230
81560rcu_preempt4177-21ntpdc09:01:580
81560rcu_preempt20599-21ssh12:35:070
81560rcu_preempt10877-21ssh09:19:110
81560rcu_preempt0-21swapper/011:03:490
81560rcu_preempt0-21swapper/010:47:000
81560rcu_preempt0-21swapper/010:22:340
81560rcu_preempt0-21swapper/009:06:590
81550rcu_preempt28067-21ssh11:48:400
81550rcu_preempt0-21swapper/007:57:000
81550rcu_preempt0-21swapper/007:47:550
81540rcu_preempt0-21swapper/012:38:390
81540rcu_preempt0-21swapper/012:38:390
81540rcu_preempt0-21swapper/011:57:350
81540rcu_preempt0-21swapper/008:26:460
81540rcu_preempt0-21swapper/007:52:400
81530rcu_preempt0-21swapper/011:41:380
81530rcu_preempt0-21swapper/011:32:510
81530rcu_preempt0-21swapper/008:38:300
81520rcu_preempt0-21swapper/008:21:360
81520rcu_preempt0-21swapper/008:02:560
81520rcu_preempt0-21swapper/007:41:100
81520rcu_preempt0-21swapper/007:24:300
81510rcu_preempt23457-21df_inode08:11:520
81510rcu_preempt2059-21munin-run08:56:361
81510rcu_preempt0-21swapper/108:36:501
81510rcu_preempt0-21swapper/007:27:170
81510rcu_preempt0-21swapper/007:18:580
81500rcu_preempt1139-21diskstats08:51:480
81490rcu_preempt15737-21df07:41:500
81490rcu_preempt0-21swapper/007:15:300
7882994542cyclictest812-21scsi_eh_008:32:011
7882994542cyclictest181ktimersoftd/108:18:301
81440rcu_preempt678-21users08:47:030
89950350irq/17-ehci_hcd0-21swapper/008:07:380
7881993517cyclictest1556-21kworker/0:107:31:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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