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2026-03-20 - 18:33
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Fri Mar 20, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850830irq/17-ehci_hcd945-21usb-storage07:09:481
81820rcu_preempt7345-21df_inode09:19:361
81760rcu_preempt0-21swapper/112:29:371
81720rcu_preempt0-21swapper/011:54:470
89850710irq/17-ehci_hcd945-21usb-storage12:09:461
81710rcu_preempt0-21swapper/011:20:110
81710rcu_preempt0-21swapper/011:07:330
81710rcu_preempt0-21swapper/009:50:170
81700rcu_preempt21808-21diskmemload09:45:510
81700rcu_preempt21777-21sh10:48:410
81700rcu_preempt0-21swapper/011:09:470
81690rcu_preempt0-21swapper/010:08:070
89050680irq/17-ehci_hcd1520-21ssh12:13:210
81680rcu_preempt14297-21sh10:34:240
81680rcu_preempt0-21swapper/012:08:450
81670rcu_preempt4100-21diskmemload12:24:490
81670rcu_preempt0-21swapper/010:58:120
81650rcu_preempt0-21swapper/012:36:510
81640rcu_preempt26012-21fw_forwarded_lo09:54:381
81640rcu_preempt0-21swapper/012:20:590
81640rcu_preempt0-21swapper/011:35:490
81640rcu_preempt0-21swapper/011:17:170
81630rcu_preempt11210-21latency_hist07:34:220
81630rcu_preempt0-21swapper/010:29:450
81630rcu_preempt0-21swapper/008:54:400
81630rcu_preempt0-21swapper/008:19:400
147850630irq/30-eth0-tx-0-21swapper/007:24:270
89850620irq/17-ehci_hcd0-21swapper/012:17:170
81620rcu_preempt26876-21if_eth108:34:410
81620rcu_preempt15662-21ssh11:38:411
81620rcu_preempt0-21swapper/112:39:441
81620rcu_preempt0-21swapper/111:59:311
81620rcu_preempt0-21swapper/111:52:421
81620rcu_preempt0-21swapper/110:41:151
81620rcu_preempt0-21swapper/110:31:441
81620rcu_preempt0-21swapper/012:30:260
81620rcu_preempt0-21swapper/010:24:410
81620rcu_preempt0-21swapper/009:57:500
81620rcu_preempt0-21swapper/009:35:580
81620rcu_preempt0-21swapper/008:29:330
81610rcu_preempt9724-21munin-run09:24:220
81610rcu_preempt8832-21ssh11:24:441
81610rcu_preempt3148-21ssh10:12:251
81610rcu_preempt25994-21ssh10:55:001
81610rcu_preempt25245-21ssh11:55:391
81610rcu_preempt20803-21ssh11:48:041
81610rcu_preempt10377-21ssh10:24:591
81610rcu_preempt0-21swapper/112:17:501
81610rcu_preempt0-21swapper/112:07:211
81610rcu_preempt0-21swapper/111:39:561
81610rcu_preempt0-21swapper/111:06:561
81610rcu_preempt0-21swapper/110:51:021
81610rcu_preempt0-21swapper/109:29:361
81610rcu_preempt0-21swapper/109:15:081
81610rcu_preempt0-21swapper/108:39:371
81610rcu_preempt0-21swapper/011:49:360
147950610irq/31-eth0-tx-26966-21iwlist11:59:410
89850600irq/17-ehci_hcd8040-21strings12:24:431
81600rcu_preempt6909-21munin-run09:19:220
81600rcu_preempt4790-21ssh11:17:071
81600rcu_preempt29241-21fw_conntrack08:44:370
81600rcu_preempt11747-21ssh09:27:351
81600rcu_preempt11140-21sshd07:33:401
81600rcu_preempt0-21swapper/112:22:531
81600rcu_preempt0-21swapper/110:45:061
81600rcu_preempt0-21swapper/110:36:211
81600rcu_preempt0-21swapper/011:40:270
81590rcu_preempt8915-21ssh10:24:141
81590rcu_preempt22810-21ssh09:49:161
81590rcu_preempt19979-21sshd08:07:081
81590rcu_preempt12735-21ssh11:32:241
81590rcu_preempt0-21swapper/112:36:111
81590rcu_preempt0-21swapper/111:19:311
81590rcu_preempt0-21swapper/111:02:021
81590rcu_preempt0-21swapper/110:06:181
81590rcu_preempt0-21swapper/110:00:361
81590rcu_preempt0-21swapper/109:41:561
81590rcu_preempt0-21swapper/107:19:401
81590rcu_preempt0-21swapper/007:59:360
81590rcu_preempt0-21swapper/007:09:410
6110995949cyclictest945-21usb-storage10:14:380
81580rcu_preempt3738-21proc_pri09:09:470
81580rcu_preempt25324-21ssh09:53:381
81580rcu_preempt0-21swapper/111:11:101
81580rcu_preempt0-21swapper/110:14:251
81580rcu_preempt0-21swapper/109:09:421
81580rcu_preempt0-21swapper/108:09:351
81580rcu_preempt0-21swapper/107:44:501
81580rcu_preempt0-21swapper/011:32:080
81580rcu_preempt0-21swapper/010:41:520
81580rcu_preempt0-21swapper/010:22:500
81580rcu_preempt0-21swapper/007:39:410
81570rcu_preempt9299-21ssh11:24:510
81570rcu_preempt24352-21ssh10:53:330
81570rcu_preempt16645-21ssh12:41:030
81570rcu_preempt0-21swapper/109:36:581
81570rcu_preempt0-21swapper/109:04:241
81570rcu_preempt0-21swapper/108:24:451
81570rcu_preempt0-21swapper/108:23:341
81570rcu_preempt0-21swapper/108:00:141
81570rcu_preempt0-21swapper/107:54:421
81570rcu_preempt0-21swapper/107:51:341
81570rcu_preempt0-21swapper/107:27:001
81570rcu_preempt0-21swapper/009:31:310
81570rcu_preempt0-21swapper/009:25:040
81560rcu_preempt1722-21ssh10:09:440
81560rcu_preempt12453-21latency_hist07:39:220
81560rcu_preempt11539-21df_inode07:34:361
81560rcu_preempt0-21swapper/108:14:381
81560rcu_preempt0-21swapper/011:48:030
81560rcu_preempt0-21swapper/009:39:590
81560rcu_preempt0-21swapper/008:04:230
6111995649cyclictest945-21usb-storage07:14:371
81550rcu_preempt28793-21ssh11:00:330
81550rcu_preempt28183-21ssh09:59:230
81550rcu_preempt0-21swapper/108:58:181
81550rcu_preempt0-21swapper/108:48:141
81550rcu_preempt0-21swapper/108:31:081
81550rcu_preempt0-21swapper/007:57:260
81540rcu_preempt0-21swapper/108:51:511
81540rcu_preempt0-21swapper/107:41:061
89850530irq/17-ehci_hcd945-21usb-storage07:21:260
81530rcu_preempt15333-21df_inode07:49:380
81530rcu_preempt0-21swapper/008:10:520
81520rcu_preempt0-21swapper/108:34:411
81520rcu_preempt0-21swapper/008:49:240
81520rcu_preempt0-21swapper/008:26:380
81510rcu_preempt0-21swapper/008:18:390
81500rcu_preempt6533-21if_can007:14:390
81500rcu_preempt2434-21ntp_states09:04:450
6110995047cyclictest945-21usb-storage08:39:360
6110994946cyclictest945-21usb-storage07:44:410
6110994845cyclictest945-21usb-storage09:04:230
81410rcu_preempt0-21swapper/108:59:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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