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2026-01-04 - 16:24
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Sun Jan 04, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811000rcu_preempt19-21ksoftirqd/109:36:331
81730rcu_preempt0-21swapper/011:55:490
81720rcu_preempt24135-1kworker/0:2H09:20:330
81710rcu_preempt2096-21diskstats09:31:290
81710rcu_preempt0-21swapper/010:41:150
81690rcu_preempt3598-21ntp_states10:26:200
81690rcu_preempt0-21swapper/109:31:101
81690rcu_preempt0-21swapper/009:47:080
81680rcu_preempt8102-21sh10:34:501
81680rcu_preempt0-21swapper/011:20:190
81680rcu_preempt0-21swapper/010:22:230
81670rcu_preempt857-21sh09:29:260
81670rcu_preempt19228-21sh09:59:361
81670rcu_preempt0-21swapper/111:55:421
81670rcu_preempt0-21swapper/012:23:290
81670rcu_preempt0-21swapper/007:29:570
81660rcu_preempt21459-21diskmemload11:21:361
81660rcu_preempt1489-21sshd07:51:110
81660rcu_preempt10403-21entropy08:26:140
81660rcu_preempt0-21swapper/111:11:141
81660rcu_preempt0-21swapper/111:11:141
81660rcu_preempt0-21swapper/012:06:360
81650rcu_preempt23109-21cpu10:06:121
81650rcu_preempt22970-21ntp_states07:06:200
81640rcu_preempt5903-21ssh12:17:020
81640rcu_preempt22517-21fw_conntrack07:06:131
81640rcu_preempt20849-21ssh11:48:510
81640rcu_preempt12921-1kworker/0:0H10:04:050
81640rcu_preempt0-21swapper/108:47:111
81630rcu_preempt0-21swapper/108:19:491
147950630irq/31-eth0-tx-21459-21diskmemload11:07:330
81620rcu_preempt7965-21ssh09:41:131
81620rcu_preempt29188-21ssh12:01:500
81620rcu_preempt22796-1kworker/0:0H11:02:510
81620rcu_preempt0-21swapper/111:50:211
81620rcu_preempt0-21swapper/110:54:361
81620rcu_preempt0-21swapper/107:16:261
81620rcu_preempt0-21swapper/008:44:400
81620rcu_preempt0-21swapper/008:01:170
89850610irq/17-ehci_hcd21459-21diskmemload11:36:141
81610rcu_preempt7102-21if_eth111:26:170
81610rcu_preempt32714-21ssh11:15:440
81610rcu_preempt32714-21ssh11:15:440
81610rcu_preempt22138-21if_eth009:11:170
81610rcu_preempt19590-21memory09:01:191
81610rcu_preempt0-21swapper/112:27:321
81610rcu_preempt0-21swapper/112:19:281
81610rcu_preempt0-21swapper/112:01:241
81610rcu_preempt0-21swapper/111:41:211
81610rcu_preempt0-21swapper/111:29:211
81610rcu_preempt0-21swapper/111:17:121
81610rcu_preempt0-21swapper/111:06:251
81610rcu_preempt0-21swapper/012:31:120
81610rcu_preempt0-21swapper/012:31:120
81610rcu_preempt0-21swapper/012:26:170
81610rcu_preempt0-21swapper/011:42:110
81610rcu_preempt0-21swapper/009:56:170
81610rcu_preempt0-21swapper/007:21:140
81600rcu_preempt7688-21ssh10:33:360
81600rcu_preempt4182-21ssh12:15:310
81600rcu_preempt19900-21ssh10:53:450
81600rcu_preempt0-21swapper/112:25:391
81600rcu_preempt0-21swapper/109:26:211
81600rcu_preempt0-21swapper/109:11:231
81600rcu_preempt0-21swapper/107:36:171
81600rcu_preempt0-21swapper/012:39:380
81600rcu_preempt0-21swapper/011:57:170
81600rcu_preempt0-21swapper/011:31:230
81600rcu_preempt0-21swapper/007:16:160
81590rcu_preempt28229-21ssh10:14:061
81590rcu_preempt27021-21ssh09:19:001
81590rcu_preempt15730-21ssh12:34:151
81590rcu_preempt15730-21ssh12:34:151
81590rcu_preempt15319-21ssh09:51:590
81590rcu_preempt0-21swapper/111:03:251
81590rcu_preempt0-21swapper/110:38:351
81590rcu_preempt0-21swapper/110:26:201
81590rcu_preempt0-21swapper/108:06:181
81590rcu_preempt0-21swapper/011:22:210
81590rcu_preempt0-21swapper/010:18:140
81590rcu_preempt0-21swapper/009:41:210
81590rcu_preempt0-21swapper/008:34:470
81590rcu_preempt0-21swapper/007:56:330
89850580irq/17-ehci_hcd171rcuc/109:46:181
81580rcu_preempt29666-21ssh09:22:400
81580rcu_preempt24405-21ssh10:06:530
81580rcu_preempt17388-21ssh10:50:181
81580rcu_preempt15505-21sort08:46:170
81580rcu_preempt1081-21sshd07:50:480
81580rcu_preempt0-21swapper/112:36:291
81580rcu_preempt0-21swapper/108:52:501
81580rcu_preempt0-21swapper/107:21:141
81580rcu_preempt0-21swapper/010:40:560
81580rcu_preempt0-21swapper/009:38:330
81580rcu_preempt0-21swapper/008:06:330
81570rcu_preempt28371-21ssh10:14:300
81570rcu_preempt27141-21ssh11:59:331
81570rcu_preempt2378-21ssh10:25:211
81570rcu_preempt22167-21ssh10:56:290
81570rcu_preempt14140-21ssh11:37:030
81570rcu_preempt0-21swapper/112:07:581
81570rcu_preempt0-21swapper/110:58:371
81570rcu_preempt0-21swapper/109:06:161
81570rcu_preempt0-21swapper/108:44:471
81570rcu_preempt0-21swapper/010:46:490
81570rcu_preempt0-21swapper/008:58:470
81560rcu_preempt19746-21ntp_states09:01:220
81560rcu_preempt11283-21ssh11:32:401
81560rcu_preempt0-21swapper/112:15:221
81560rcu_preempt0-21swapper/110:19:321
81560rcu_preempt0-21swapper/110:04:101
81560rcu_preempt0-21swapper/109:53:381
81560rcu_preempt0-21swapper/107:11:221
81560rcu_preempt0-21swapper/008:40:060
81560rcu_preempt0-21swapper/007:35:270
81550rcu_preempt2138-21snmpd08:25:071
81550rcu_preempt13500-21ssh10:42:461
81550rcu_preempt12372-21sort08:31:221
81550rcu_preempt0-21swapper/008:25:160
81550rcu_preempt0-21swapper/008:19:300
81550rcu_preempt0-21swapper/007:45:040
81550rcu_preempt0-21swapper/007:11:530
81540rcu_preempt1282-21cpu07:51:091
81540rcu_preempt0-21swapper/109:21:151
81540rcu_preempt0-21swapper/108:39:571
81540rcu_preempt0-21swapper/108:26:211
81540rcu_preempt0-21swapper/107:56:151
81530rcu_preempt28040-21ntpq07:26:191
81530rcu_preempt0-21swapper/107:47:451
81530rcu_preempt0-21swapper/107:41:201
81510rcu_preempt0-21swapper/107:31:121
81510rcu_preempt0-21swapper/007:39:510
81490rcu_preempt0-21swapper/108:11:211
81480rcu_preempt16961-21irqstats08:51:180
81460rcu_preempt18461-21ntp_states08:56:201
81460rcu_preempt0-21swapper/008:12:070
81420rcu_preempt4304-21irqstats08:01:171
89850350irq/17-ehci_hcd0-21swapper/009:06:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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