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2026-03-06 - 15:22
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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 highest latencies:
System rackcslot3.osadl.org (updated Fri Mar 06, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850990irq/17-ehci_hcd171rcuc/111:29:121
147850980irq/30-eth0-tx-1864-21ssh11:13:221
81830rcu_preempt21237-21ssh09:47:141
81740rcu_preempt0-21swapper/010:27:560
81730rcu_preempt0-21swapper/107:11:571
81720rcu_preempt14705-21apache210:03:041
81710rcu_preempt31267-21apt-get12:08:571
81710rcu_preempt16082-21sh10:38:561
81700rcu_preempt5589-21ssh12:20:010
81700rcu_preempt0-21swapper/109:25:041
81690rcu_preempt32559-21apt-get10:08:581
81690rcu_preempt11728-21k10sensors10:29:111
81690rcu_preempt0-21swapper/107:57:291
81690rcu_preempt0-21swapper/012:03:530
81680rcu_preempt7541-21df11:23:591
81680rcu_preempt3568-21sh12:17:101
81680rcu_preempt3-21ksoftirqd/010:49:160
81680rcu_preempt2138-21snmpd07:17:221
81680rcu_preempt0-21swapper/110:23:001
81680rcu_preempt0-21swapper/010:00:500
89850670irq/17-ehci_hcd7034-21df_abs12:23:591
81670rcu_preempt1608-21apt-get09:08:581
81670rcu_preempt0-21swapper/110:48:391
81670rcu_preempt0-21swapper/011:46:260
81670rcu_preempt0-21swapper/010:48:040
81670rcu_preempt0-21swapper/010:41:510
81670rcu_preempt0-21swapper/010:20:270
81670rcu_preempt0-21swapper/010:09:460
81670rcu_preempt0-21swapper/009:36:400
81670rcu_preempt0-21swapper/009:29:100
81660rcu_preempt436-21df_abs09:04:001
81660rcu_preempt24206-21sendmail_mailqu11:54:091
81660rcu_preempt0-21swapper/012:09:210
81660rcu_preempt0-21swapper/011:31:290
81660rcu_preempt0-21swapper/011:20:030
81660rcu_preempt0-21swapper/010:57:560
81660rcu_preempt0-21swapper/007:55:230
81660rcu_preempt0-21swapper/007:17:080
81650rcu_preempt2762-21diskmemload10:48:571
81650rcu_preempt27352-21strings10:59:060
81650rcu_preempt25616-21ssh11:58:070
81650rcu_preempt17866-21munin-run11:43:451
81650rcu_preempt0-21swapper/112:28:591
81650rcu_preempt0-21swapper/012:35:560
81650rcu_preempt0-21swapper/009:48:160
81650rcu_preempt0-21swapper/009:28:190
81650rcu_preempt0-21swapper/009:10:230
81650rcu_preempt0-21swapper/008:27:530
81650rcu_preempt0-21swapper/008:09:580
81640rcu_preempt4353-21ntp_states07:09:100
81640rcu_preempt0-21swapper/112:18:591
81640rcu_preempt0-21swapper/110:55:571
81630rcu_preempt22747-21ssh11:52:280
81630rcu_preempt16963-21http_loadtime09:39:010
81630rcu_preempt0-21swapper/111:02:021
81620rcu_preempt626-21ssh11:09:180
81620rcu_preempt3646-21ssh11:15:270
81620rcu_preempt3600-21ssh12:17:170
81620rcu_preempt31384-21ssh11:07:460
81620rcu_preempt27857-21ssh12:01:300
81620rcu_preempt17517-21ssh11:42:370
81620rcu_preempt14622-21ssh12:38:470
81620rcu_preempt0-21swapper/111:49:571
81620rcu_preempt0-21swapper/109:42:571
81620rcu_preempt0-21swapper/010:13:520
81620rcu_preempt0-21swapper/009:54:020
81610rcu_preempt7995-21ssh12:24:170
81610rcu_preempt4790-21ssh09:16:100
81610rcu_preempt29820-21ssh10:03:520
81610rcu_preempt14900-21ssh11:38:030
81610rcu_preempt11194-21ssh12:31:250
81610rcu_preempt0-21swapper/110:26:421
81610rcu_preempt0-21swapper/110:14:511
81610rcu_preempt0-21swapper/108:54:101
81610rcu_preempt0-21swapper/010:34:070
81610rcu_preempt0-21swapper/010:33:090
81610rcu_preempt0-21swapper/008:39:050
81610rcu_preempt0-21swapper/008:13:570
81610rcu_preempt0-21swapper/007:47:240
81600rcu_preempt7294-21ssh09:20:070
81600rcu_preempt0-21swapper/109:31:201
81600rcu_preempt0-21swapper/108:39:101
81600rcu_preempt0-21swapper/011:24:170
81600rcu_preempt0-21swapper/008:34:040
81600rcu_preempt0-21swapper/007:34:130
81590rcu_preempt28428-21ntp_states08:44:050
81590rcu_preempt14336-21if_eth009:34:041
81590rcu_preempt0-21swapper/109:49:551
81590rcu_preempt0-21swapper/009:53:400
81590rcu_preempt0-21swapper/009:06:430
81590rcu_preempt0-21swapper/008:58:520
81590rcu_preempt0-21swapper/008:19:050
81590rcu_preempt0-21swapper/007:21:440
81580rcu_preempt30295-21ssh12:05:501
81580rcu_preempt0-21swapper/109:19:031
81580rcu_preempt0-21swapper/108:24:101
81580rcu_preempt0-21swapper/108:14:101
81580rcu_preempt0-21swapper/008:30:040
81580rcu_preempt0-21swapper/008:07:590
81580rcu_preempt0-21swapper/008:02:370
81580rcu_preempt0-21swapper/007:40:240
81580rcu_preempt0-21swapper/007:28:520
81580rcu_preempt0-21swapper/007:26:220
89850570irq/17-ehci_hcd945-21usb-storage09:14:061
81570rcu_preempt0-21swapper/112:38:451
81570rcu_preempt0-21swapper/111:37:561
81570rcu_preempt0-21swapper/111:06:461
81570rcu_preempt0-21swapper/008:55:130
81570rcu_preempt0-21swapper/007:51:090
81560rcu_preempt2709-21ssh11:14:041
81560rcu_preempt19483-21ssh11:45:041
81560rcu_preempt12237-21timerandwakeup07:39:101
81560rcu_preempt0-21swapper/108:44:041
147950560irq/31-eth0-tx-81rcu_preempt12:34:091
89850550irq/17-ehci_hcd1250-21jbd2/sda3-808:03:451
81550rcu_preempt9001-21ls07:29:011
81550rcu_preempt5899-21ssh11:19:211
81550rcu_preempt26031-21ssh09:54:581
81550rcu_preempt0-21swapper/112:02:381
81550rcu_preempt0-21swapper/108:04:031
81540rcu_preempt31106-21ssh10:04:341
81530rcu_preempt32131-21needreboot08:59:051
81530rcu_preempt0-21swapper/107:49:121
81520rcu_preempt0-21swapper/110:34:081
81520rcu_preempt0-21swapper/108:34:111
81510rcu_preempt0-21swapper/108:09:021
81510rcu_preempt0-21swapper/107:45:241
4788995148cyclictest945-21usb-storage08:49:070
4788995148cyclictest945-21usb-storage08:49:070
81500rcu_preempt0-21swapper/108:32:131
81500rcu_preempt0-21swapper/107:34:111
81490rcu_preempt0-21swapper/107:23:041
81480rcu_preempt21626-21diskstats08:18:591
478999451cyclictest7454-21apt-get07:23:581
81440rcu_preempt30110-21cat08:53:451
81440rcu_preempt30110-21cat08:53:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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