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2026-06-30 - 00:55
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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 Mon Jun 29, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt23111-21kworker/1:007:10:321
146550790irq/30-eth0-tx-32276-21switchtime09:10:341
209299775cyclictest7775-21cat11:30:091
81760rcu_preempt0-21swapper/107:20:331
81750rcu_preempt0-21swapper/112:20:081
81740rcu_preempt4405-21smartctl07:20:330
81740rcu_preempt11329-21ntp_states11:35:320
81740rcu_preempt0-21swapper/008:15:280
81730rcu_preempt29089-21if_can009:00:270
81730rcu_preempt10685-21ntpq12:35:290
81730rcu_preempt0-21swapper/110:25:081
81730rcu_preempt0-21swapper/008:55:230
89150720irq/17-ehci_hcd945-21usb-storage11:51:100
81720rcu_preempt0-21swapper/110:22:351
81720rcu_preempt0-21swapper/010:50:340
81710rcu_preempt31675-21sh10:12:151
81710rcu_preempt15098-21diskstats08:05:220
81710rcu_preempt0-21swapper/112:10:281
81710rcu_preempt0-21swapper/009:47:560
81700rcu_preempt7548-21fw_conntrack12:30:240
81700rcu_preempt5118-21ssh09:23:061
81700rcu_preempt32429-21diskmemload09:43:251
81700rcu_preempt32391-21users09:10:360
81700rcu_preempt29739-21ssh10:09:571
81700rcu_preempt24856-21munin-run08:45:080
81700rcu_preempt11537-21memory10:35:280
81700rcu_preempt10240-21diskmemload10:33:121
81700rcu_preempt0-21swapper/112:01:081
81700rcu_preempt0-21swapper/111:45:311
89950690irq/17-ehci_hcd945-21usb-storage11:27:571
81690rcu_preempt22698-21ssh11:57:040
81690rcu_preempt21423-21fw_conntrack08:30:230
81690rcu_preempt15732-21ssh09:42:470
81690rcu_preempt0-21swapper/111:58:501
81690rcu_preempt0-21swapper/111:35:341
81690rcu_preempt0-21swapper/009:39:120
81680rcu_preempt6777-21ssh11:27:120
81680rcu_preempt2932-21ssh10:20:160
81680rcu_preempt23724-21apt-get08:40:201
81680rcu_preempt16430-21memory11:45:280
81680rcu_preempt15192-21sh11:43:441
81680rcu_preempt14149-21memory08:00:280
81680rcu_preempt12856-21df_inode12:40:250
81680rcu_preempt12316-21apt-get07:55:181
81680rcu_preempt0-21swapper/112:39:241
81680rcu_preempt0-21swapper/108:35:161
81680rcu_preempt0-21swapper/011:06:530
81670rcu_preempt16645-21ssh10:45:281
81670rcu_preempt1049-21df07:10:200
81670rcu_preempt0-21swapper/110:50:491
81670rcu_preempt0-21swapper/110:18:191
81670rcu_preempt0-21swapper/109:48:281
81670rcu_preempt0-21swapper/010:00:420
81660rcu_preempt497-21ntpdc11:15:310
81660rcu_preempt3908-21ntp_states09:20:320
81660rcu_preempt31955-21fw_forwarded_lo12:15:230
81660rcu_preempt11312-21diskstats07:50:210
81660rcu_preempt0-21swapper/110:56:531
81660rcu_preempt0-21swapper/110:41:441
81660rcu_preempt0-21swapper/110:01:251
81660rcu_preempt0-21swapper/109:36:431
81660rcu_preempt0-21swapper/109:30:351
81660rcu_preempt0-21swapper/107:40:361
81660rcu_preempt0-21swapper/107:19:161
81660rcu_preempt0-21swapper/011:13:260
81660rcu_preempt0-21swapper/010:32:350
81650rcu_preempt0-21swapper/112:22:001
81650rcu_preempt0-21swapper/112:09:431
81650rcu_preempt0-21swapper/111:20:111
81650rcu_preempt0-21swapper/111:01:091
81650rcu_preempt0-21swapper/110:36:401
81650rcu_preempt0-21swapper/109:58:311
81650rcu_preempt0-21swapper/109:54:501
81650rcu_preempt0-21swapper/109:25:081
81650rcu_preempt0-21swapper/109:16:361
81650rcu_preempt0-21swapper/108:45:131
81650rcu_preempt0-21swapper/107:36:201
81640rcu_preempt0-21swapper/111:09:411
81640rcu_preempt0-21swapper/109:05:561
81640rcu_preempt0-21swapper/109:00:081
81640rcu_preempt0-21swapper/108:59:321
81640rcu_preempt0-21swapper/108:31:171
81640rcu_preempt0-21swapper/108:23:161
81640rcu_preempt0-21swapper/108:16:521
81640rcu_preempt0-21swapper/108:12:361
81640rcu_preempt0-21swapper/108:01:561
81640rcu_preempt0-21swapper/107:32:041
81640rcu_preempt0-21swapper/107:27:481
81630rcu_preempt0-21swapper/108:51:001
81630rcu_preempt0-21swapper/108:27:321
81630rcu_preempt0-21swapper/107:53:241
81630rcu_preempt0-21swapper/107:47:001
81630rcu_preempt0-21swapper/009:25:450
81620rcu_preempt8794-21fw_conntrack07:40:240
81620rcu_preempt22964-21ssh10:56:350
81620rcu_preempt2294-21rm09:18:180
81620rcu_preempt22354-21fw_conntrack09:55:240
81620rcu_preempt16505-21diskmemload10:45:240
81620rcu_preempt13446-21fw_forwarded_lo11:40:250
81620rcu_preempt0-21swapper/112:42:171
81620rcu_preempt0-21swapper/111:52:541
81610rcu_preempt9687-21ssh09:30:390
81610rcu_preempt4993-21df_inode12:25:230
81610rcu_preempt0-21swapper/112:26:531
81600rcu_preempt4695-21ssh11:24:220
81600rcu_preempt2192-21snmpd08:13:000
81600rcu_preempt20164-21fw_conntrack08:25:230
81600rcu_preempt0-21swapper/112:32:141
81600rcu_preempt0-21swapper/111:13:071
81590rcu_preempt26174-21ssh11:03:100
81580rcu_preempt8066-21df_abs11:30:210
81580rcu_preempt14778-21ssh10:40:440
81580rcu_preempt13416-21sshd07:56:470
2092995848cyclictest181ktimersoftd/111:15:231
81570rcu_preempt32429-21diskmemload12:14:550
81560rcu_preempt7714-21ssh10:28:290
81560rcu_preempt32429-21diskmemload12:22:310
81560rcu_preempt32429-21diskmemload09:54:390
81560rcu_preempt0-21swapper/108:09:101
81550rcu_preempt0-21swapper/012:09:520
81530rcu_preempt24974-21ssh12:00:510
81530rcu_preempt0-21swapper/010:16:160
81530rcu_preempt0-21swapper/007:28:310
81520rcu_preempt30530-21irqstats09:05:250
81520rcu_preempt0-21swapper/007:35:490
81510rcu_preempt0-21swapper/010:12:350
81510rcu_preempt0-21swapper/007:46:230
146250430irq/28-eth0-rx-28506-21ssh10:05:500
81420rcu_preempt3-21ksoftirqd/007:30:310
2088994238cyclictest945-21usb-storage08:38:040
208899418cyclictest2021-21kworker/0:107:15:340
208899398cyclictest2021-21kworker/0:108:20:280
208899389cyclictest2021-21kworker/0:108:45:480
208899364cyclictest2021-21kworker/0:108:51:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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