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2026-01-02 - 16:59
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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 all highest latencies:
System rackcslot3.osadl.org (updated Fri Jan 02, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147850750irq/30-eth0-tx-181ktimersoftd/112:04:061
81730rcu_preempt3729-21cut12:31:180
81700rcu_preempt427-1kworker/1:1H09:37:431
81700rcu_preempt0-21swapper/010:51:050
81690rcu_preempt4788-21sh09:45:460
81690rcu_preempt31177-21ssh11:26:161
81690rcu_preempt19450-21/usr/sbin/munin09:15:520
81690rcu_preempt0-21swapper/108:20:531
81690rcu_preempt0-21swapper/010:47:390
147650690irq/28-eth0-rx-0-21swapper/107:08:051
81680rcu_preempt30969-21turbostat10:35:481
81680rcu_preempt24132-21diskstats12:11:091
81680rcu_preempt0-21swapper/109:48:351
81680rcu_preempt0-21swapper/109:06:151
81670rcu_preempt29751-21munin-run07:55:520
81670rcu_preempt26657-21ssh10:21:331
81670rcu_preempt0-21swapper/110:18:281
81670rcu_preempt0-21swapper/107:55:141
81670rcu_preempt0-21swapper/009:31:240
81670rcu_preempt0-21swapper/009:26:260
81660rcu_preempt19036-21df_abs11:06:070
81660rcu_preempt0-21swapper/009:21:380
81660rcu_preempt0-21swapper/007:56:330
81650rcu_preempt0-21swapper/111:05:081
81650rcu_preempt0-21swapper/010:43:190
81650rcu_preempt0-21swapper/010:38:520
81650rcu_preempt0-21swapper/010:05:300
81640rcu_preempt838-21mailstats08:06:171
81640rcu_preempt7500-21ssh11:41:171
81640rcu_preempt32168-21ssh12:25:530
81640rcu_preempt32066-21ssh11:27:470
81640rcu_preempt28411-21open_files11:21:170
81640rcu_preempt24236-21netstat07:31:161
81640rcu_preempt0-21swapper/108:31:181
81640rcu_preempt0-21swapper/011:46:020
81640rcu_preempt0-21swapper/007:21:120
81630rcu_preempt28071-21ssh12:17:150
81630rcu_preempt21566-21irqstats12:06:120
81630rcu_preempt0-21swapper/111:16:061
81630rcu_preempt0-21swapper/108:01:181
81630rcu_preempt0-21swapper/012:27:450
81630rcu_preempt0-21swapper/010:57:290
81630rcu_preempt0-21swapper/010:25:550
81630rcu_preempt0-21swapper/010:16:330
81620rcu_preempt26139-21ssh11:17:020
81620rcu_preempt13273-21ssh10:00:051
81620rcu_preempt0-21swapper/108:56:121
81620rcu_preempt0-21swapper/108:36:051
81620rcu_preempt0-21swapper/011:01:090
81620rcu_preempt0-21swapper/010:14:390
89850610irq/17-ehci_hcd171rcuc/109:31:521
81610rcu_preempt17539-21ssh12:00:040
81610rcu_preempt0-21swapper/111:57:511
81610rcu_preempt0-21swapper/111:21:151
81610rcu_preempt0-21swapper/111:07:411
81610rcu_preempt0-21swapper/109:43:551
81610rcu_preempt0-21swapper/109:13:031
81610rcu_preempt0-21swapper/107:46:151
81610rcu_preempt0-21swapper/012:36:400
81610rcu_preempt0-21swapper/009:40:110
81610rcu_preempt0-21swapper/008:43:370
147950610irq/31-eth0-tx-0-21swapper/112:16:021
81600rcu_preempt2512-21ssh11:32:290
81600rcu_preempt2512-21ssh11:32:290
81600rcu_preempt21964-21df_abs11:11:081
81600rcu_preempt1866-21awk11:31:181
81600rcu_preempt1866-21awk11:31:181
81600rcu_preempt10670-21ssh09:55:390
81600rcu_preempt0-21swapper/112:36:511
81600rcu_preempt0-21swapper/112:22:071
81600rcu_preempt0-21swapper/109:51:041
81600rcu_preempt0-21swapper/109:28:531
81600rcu_preempt0-21swapper/108:51:101
81600rcu_preempt0-21swapper/012:15:350
81600rcu_preempt0-21swapper/008:14:360
89850590irq/17-ehci_hcd0-21swapper/110:28:091
89450590irq/17-ehci_hcd111rcuc/011:51:140
81590rcu_preempt8833-21ssh11:44:340
81590rcu_preempt26705-21ssh10:21:420
81590rcu_preempt24440-21ssh09:22:521
81590rcu_preempt23295-21timerandwakeup07:26:180
81590rcu_preempt0-21swapper/111:36:421
81590rcu_preempt0-21swapper/110:56:511
81590rcu_preempt0-21swapper/110:38:381
81590rcu_preempt0-21swapper/109:20:131
81590rcu_preempt0-21swapper/109:01:001
81590rcu_preempt0-21swapper/010:31:120
81590rcu_preempt0-21swapper/009:56:470
81590rcu_preempt0-21swapper/009:49:180
81590rcu_preempt0-21swapper/009:01:120
81580rcu_preempt26847-21open_inodes07:41:161
81580rcu_preempt24701-21kworker/0:207:06:170
81580rcu_preempt23802-21ssh11:13:490
81580rcu_preempt22035-21ssh09:19:290
81580rcu_preempt2138-21snmpd07:40:121
81580rcu_preempt2031-21ssh12:29:111
81580rcu_preempt11805-21ssh10:52:231
81580rcu_preempt0-21swapper/112:30:541
81580rcu_preempt0-21swapper/110:41:291
81580rcu_preempt0-21swapper/108:26:081
81580rcu_preempt0-21swapper/107:21:121
81580rcu_preempt0-21swapper/010:10:160
81580rcu_preempt0-21swapper/007:41:100
81580rcu_preempt0-21swapper/007:31:130
81570rcu_preempt5030-21latency_hist08:25:531
81570rcu_preempt5012-21ssh11:36:230
81570rcu_preempt16499-21munin-run10:05:531
81570rcu_preempt13149-21ntp_states11:51:161
81570rcu_preempt11582-21ssh11:49:021
81570rcu_preempt0-21swapper/110:46:091
81570rcu_preempt0-21swapper/008:20:170
81560rcu_preempt22597-21ssh12:07:291
81560rcu_preempt21896-21ssh10:14:381
81560rcu_preempt18480-21ssh12:01:120
81560rcu_preempt0-21swapper/008:24:350
81560rcu_preempt0-21swapper/008:02:300
81560rcu_preempt0-21swapper/007:17:320
81550rcu_preempt0-21swapper/110:07:001
81550rcu_preempt0-21swapper/107:26:061
81550rcu_preempt0-21swapper/107:15:481
81550rcu_preempt0-21swapper/008:50:520
81550rcu_preempt0-21swapper/008:07:110
81540rcu_preempt0-21swapper/108:50:251
81540rcu_preempt0-21swapper/008:34:410
81520rcu_preempt15512-21fw_forwarded_lo09:06:070
81510rcu_preempt0-21swapper/107:58:131
81510rcu_preempt0-21swapper/008:26:490
81510rcu_preempt0-21swapper/007:13:230
18304995147cyclictest945-21usb-storage08:11:121
18303995148cyclictest945-21usb-storage08:51:190
81490rcu_preempt12951-21diskstats08:56:100
81480rcu_preempt25065-21diskstats07:36:110
81480rcu_preempt19859-21tr07:16:071
81470rcu_preempt7888-21diskstats08:36:050
18304994541cyclictest945-21usb-storage08:41:091
18303994543cyclictest945-21usb-storage07:46:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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