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2026-04-01 - 00:17
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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 Tue Mar 31, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81820rcu_preempt18759-21sh07:10:060
81770rcu_preempt20015-21diskstats12:25:081
81760rcu_preempt29633-21ntp_states11:40:171
81740rcu_preempt0-21swapper/107:35:181
81740rcu_preempt0-21swapper/107:10:091
89850710irq/17-ehci_hcd0-21swapper/109:55:261
81710rcu_preempt4313-21apt-get11:55:041
81710rcu_preempt22904-21sshd11:28:011
81710rcu_preempt0-21swapper/110:25:171
81700rcu_preempt0-21swapper/010:05:110
81690rcu_preempt28109-21missed_timers12:40:121
81690rcu_preempt22060-21cron10:24:521
81690rcu_preempt17720-21diskmemload09:51:170
81690rcu_preempt0-21swapper/111:48:001
81680rcu_preempt27735-21sh11:36:350
81680rcu_preempt14142-21ssh10:08:551
81680rcu_preempt13631-21sh12:11:470
81680rcu_preempt11967-21if_eth008:50:120
81680rcu_preempt0-21swapper/108:50:121
81680rcu_preempt0-21swapper/011:20:110
81670rcu_preempt28369-21k10sensors07:45:171
81670rcu_preempt25383-21ssh11:32:321
81670rcu_preempt23536-21munin-run07:29:521
81670rcu_preempt17720-21diskmemload10:42:310
81670rcu_preempt17720-21diskmemload09:36:551
81670rcu_preempt0-21swapper/112:23:561
81670rcu_preempt0-21swapper/111:00:331
81670rcu_preempt0-21swapper/110:57:481
81660rcu_preempt0-21swapper/112:31:181
81660rcu_preempt0-21swapper/111:15:431
81660rcu_preempt0-21swapper/110:51:081
81660rcu_preempt0-21swapper/011:29:160
81660rcu_preempt0-21swapper/010:16:220
81650rcu_preempt0-21swapper/112:38:351
81650rcu_preempt0-21swapper/112:38:351
81650rcu_preempt0-21swapper/111:51:211
81650rcu_preempt0-21swapper/109:16:201
81650rcu_preempt0-21swapper/108:55:061
81640rcu_preempt9218-21munin-run12:04:520
81640rcu_preempt31871-21if_wlan009:40:121
81640rcu_preempt24206-21latency07:30:110
81640rcu_preempt16814-21df_abs09:10:071
81640rcu_preempt0-21swapper/110:37:511
81640rcu_preempt0-21swapper/110:32:181
81640rcu_preempt0-21swapper/109:34:051
81640rcu_preempt0-21swapper/109:20:071
81640rcu_preempt0-21swapper/010:55:170
81630rcu_preempt0-21swapper/112:12:361
81630rcu_preempt0-21swapper/112:03:561
81630rcu_preempt0-21swapper/109:27:501
81630rcu_preempt0-21swapper/011:40:100
81630rcu_preempt0-21swapper/009:55:040
81620rcu_preempt0-21swapper/012:20:090
81620rcu_preempt0-21swapper/012:05:040
81620rcu_preempt0-21swapper/009:35:020
81620rcu_preempt0-21swapper/008:20:170
81610rcu_preempt29875-21sshd07:54:011
81610rcu_preempt28360-21ssh11:38:531
81610rcu_preempt2322-21ssh10:48:121
81610rcu_preempt15090-21ssh11:12:511
81610rcu_preempt11212-21ssh10:02:541
81610rcu_preempt0-21swapper/111:22:371
81610rcu_preempt0-21swapper/111:07:191
81610rcu_preempt0-21swapper/109:47:181
81610rcu_preempt0-21swapper/010:49:550
81610rcu_preempt0-21swapper/007:44:120
81600rcu_preempt6314-21ssh09:53:451
81600rcu_preempt32416-21munin-run08:04:520
81600rcu_preempt2546-21sshd08:14:011
81600rcu_preempt20709-21ssh09:20:050
81600rcu_preempt16812-21ssh10:14:061
81600rcu_preempt14101-21cpu09:00:050
81600rcu_preempt11837-21ssh12:09:461
81600rcu_preempt0-21swapper/107:55:051
81600rcu_preempt0-21swapper/009:15:360
81600rcu_preempt0-21swapper/008:55:140
81600rcu_preempt0-21swapper/007:39:100
81590rcu_preempt3954-21sed08:19:521
81590rcu_preempt32437-21timerandwakeup09:40:200
81590rcu_preempt17987-21ntp_states10:15:141
81590rcu_preempt16814-21ssh12:19:281
81590rcu_preempt16444-21sshd09:09:191
81590rcu_preempt0-21swapper/108:35:201
81590rcu_preempt0-21swapper/107:40:101
81590rcu_preempt0-21swapper/012:37:000
81590rcu_preempt0-21swapper/012:37:000
81590rcu_preempt0-21swapper/011:14:000
81590rcu_preempt0-21swapper/011:06:120
81590rcu_preempt0-21swapper/011:01:300
81590rcu_preempt0-21swapper/009:10:110
81590rcu_preempt0-21swapper/007:20:110
81580rcu_preempt0-21swapper/107:23:351
81580rcu_preempt0-21swapper/011:58:150
81580rcu_preempt0-21swapper/011:30:170
81580rcu_preempt0-21swapper/009:05:140
81570rcu_preempt9730-21ntpq08:40:141
81570rcu_preempt0-21swapper/110:39:591
81570rcu_preempt0-21swapper/108:17:001
81570rcu_preempt0-21swapper/108:05:081
81570rcu_preempt0-21swapper/107:15:171
81570rcu_preempt0-21swapper/107:15:171
81570rcu_preempt0-21swapper/011:50:090
81570rcu_preempt0-21swapper/011:15:030
81570rcu_preempt0-21swapper/010:45:340
81570rcu_preempt0-21swapper/010:25:000
81570rcu_preempt0-21swapper/010:20:040
81570rcu_preempt0-21swapper/009:34:140
81570rcu_preempt0-21swapper/009:26:060
81570rcu_preempt0-21swapper/008:15:100
81560rcu_preempt23131-21ntpq07:25:120
81560rcu_preempt0-21swapper/012:44:260
81560rcu_preempt0-21swapper/011:49:070
81560rcu_preempt0-21swapper/010:38:150
81560rcu_preempt0-21swapper/008:49:270
81560rcu_preempt0-21swapper/007:55:110
81560rcu_preempt0-21swapper/007:51:320
81560rcu_preempt0-21swapper/007:46:510
81550rcu_preempt2975-21ssh09:46:230
81550rcu_preempt0-21swapper/012:15:130
81550rcu_preempt0-21swapper/008:39:240
81550rcu_preempt0-21swapper/008:25:070
81540rcu_preempt32367-21users08:00:181
81540rcu_preempt15093-21if_wlan010:10:120
81540rcu_preempt11660-21ssh10:04:330
81540rcu_preempt0-21swapper/008:14:020
81540rcu_preempt0-21swapper/008:06:370
147650540irq/28-eth0-rx-41ktimersoftd/012:29:120
81530rcu_preempt0-21swapper/010:34:330
81520rcu_preempt0-21swapper/008:42:280
81520rcu_preempt0-21swapper/007:17:070
81520rcu_preempt0-21swapper/007:17:070
19744995248cyclictest945-21usb-storage12:30:490
81500rcu_preempt5516-21http_loadtime08:25:091
81470rcu_preempt11016-21ntp_states08:45:151
147650470irq/28-eth0-rx-0-21swapper/109:00:071
19745994441cyclictest945-21usb-storage07:30:161
19744994138cyclictest945-21usb-storage08:31:400
147950360irq/31-eth0-tx-19-21ksoftirqd/108:29:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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