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2026-08-28 - 16:40
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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 Aug 28, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81860rcu_preempt3-21ksoftirqd/011:21:330
81770rcu_preempt0-21swapper/107:17:301
81740rcu_preempt7018-21mailstats08:45:341
81740rcu_preempt14172-21/usr/sbin/munin11:25:341
81730rcu_preempt0-21swapper/110:50:541
81720rcu_preempt30188-21sh09:49:071
81710rcu_preempt32036-21vmstat08:15:371
81710rcu_preempt16800-21sh12:34:431
81710rcu_preempt0-21swapper/112:40:301
81710rcu_preempt0-21swapper/108:25:321
81710rcu_preempt0-21swapper/107:40:221
81710rcu_preempt0-21swapper/011:45:340
81710rcu_preempt0-21swapper/011:38:310
81710rcu_preempt0-21swapper/009:35:350
81690rcu_preempt14848-21diskmemload10:14:291
81690rcu_preempt0-21swapper/110:56:551
81690rcu_preempt0-21swapper/012:47:170
81690rcu_preempt0-21swapper/010:46:470
81690rcu_preempt0-21swapper/010:29:430
81680rcu_preempt19052-1kworker/1:1H07:49:261
81680rcu_preempt0-21swapper/111:36:311
146250680irq/28-eth0-rx-0-21swapper/012:00:410
81670rcu_preempt26964-21munin-run08:00:081
81670rcu_preempt2192-21snmpd10:19:561
81670rcu_preempt0-21swapper/111:09:191
81670rcu_preempt0-21swapper/110:21:561
81670rcu_preempt0-21swapper/109:41:081
81660rcu_preempt2646-21timerwakeupswit11:00:361
81660rcu_preempt0-21swapper/111:47:361
81660rcu_preempt0-21swapper/111:40:131
81660rcu_preempt0-21swapper/110:47:231
81650rcu_preempt31297-21latency_hist10:55:100
81650rcu_preempt22904-21sh11:41:060
81650rcu_preempt0-21swapper/108:31:261
81640rcu_preempt9110-21if_eth108:55:281
81640rcu_preempt29680-21/usr/sbin/munin08:10:301
81640rcu_preempt28888-21/usr/sbin/munin10:50:380
81640rcu_preempt11895-21munin-run12:25:100
81640rcu_preempt10304-21ntpq12:20:301
81640rcu_preempt0-21swapper/110:43:261
81640rcu_preempt0-21swapper/109:25:371
81640rcu_preempt0-21swapper/109:20:571
81640rcu_preempt0-21swapper/109:10:321
81640rcu_preempt0-21swapper/109:00:341
81640rcu_preempt0-21swapper/108:20:251
81640rcu_preempt0-21swapper/010:00:300
81630rcu_preempt4745-21ssh12:10:261
81630rcu_preempt0-21swapper/109:09:251
81630rcu_preempt0-21swapper/008:35:320
146250630irq/28-eth0-rx-41ktimersoftd/012:28:360
81620rcu_preempt3-21ksoftirqd/012:14:120
81620rcu_preempt0-21swapper/010:22:590
81610rcu_preempt31899-21ssh09:51:001
81610rcu_preempt3-21ksoftirqd/011:58:170
81610rcu_preempt3-21ksoftirqd/011:58:170
81610rcu_preempt15549-21kworker/0:207:15:230
81610rcu_preempt0-21swapper/111:51:301
81610rcu_preempt0-21swapper/111:14:231
81610rcu_preempt0-21swapper/109:30:321
81610rcu_preempt0-21swapper/107:20:261
81610rcu_preempt0-21swapper/007:40:270
81600rcu_preempt0-21swapper/112:37:551
81600rcu_preempt0-21swapper/109:35:191
81600rcu_preempt0-21swapper/012:40:100
81600rcu_preempt0-21swapper/011:29:220
81600rcu_preempt0-21swapper/008:30:240
146550600irq/30-eth0-tx-30339-21ssh09:49:440
81590rcu_preempt4774-21ssh10:01:331
81590rcu_preempt3-21ksoftirqd/009:34:430
81590rcu_preempt25241-21ssh10:41:490
81590rcu_preempt16934-21latency_hist12:35:090
81590rcu_preempt13074-21ssh11:21:361
81590rcu_preempt0-21swapper/112:45:221
81590rcu_preempt0-21swapper/112:02:391
81590rcu_preempt0-21swapper/111:20:091
81590rcu_preempt0-21swapper/110:35:381
81590rcu_preempt0-21swapper/110:00:091
81590rcu_preempt0-21swapper/012:39:140
81590rcu_preempt0-21swapper/012:17:460
81590rcu_preempt0-21swapper/011:51:350
81580rcu_preempt3621-21/usr/sbin/munin08:35:281
81580rcu_preempt30071-21awk11:55:311
81580rcu_preempt30071-21awk11:55:311
81580rcu_preempt19706-21ssh09:28:260
81580rcu_preempt18557-21ssh11:33:220
81580rcu_preempt12414-21ssh10:16:350
81580rcu_preempt0-21swapper/112:27:111
81580rcu_preempt0-21swapper/108:50:271
81580rcu_preempt0-21swapper/107:39:261
81580rcu_preempt0-21swapper/010:06:460
81580rcu_preempt0-21swapper/009:59:350
81580rcu_preempt0-21swapper/009:53:050
81580rcu_preempt0-21swapper/008:50:340
81570rcu_preempt3-21ksoftirqd/011:15:400
81570rcu_preempt2172-21missed_timers11:00:310
81570rcu_preempt0-21swapper/110:05:391
81570rcu_preempt0-21swapper/108:41:041
81570rcu_preempt0-21swapper/107:25:261
81570rcu_preempt0-21swapper/008:45:310
81560rcu_preempt5624-21ssh11:07:060
81560rcu_preempt3-21ksoftirqd/010:10:510
81560rcu_preempt20855-21ssh10:34:300
81560rcu_preempt16601-21ssh09:21:580
81560rcu_preempt0-21swapper/112:16:061
81560rcu_preempt0-21swapper/112:08:281
81560rcu_preempt0-21swapper/110:26:131
81560rcu_preempt0-21swapper/108:05:291
81560rcu_preempt0-21swapper/009:00:350
81560rcu_preempt0-21swapper/008:20:340
81560rcu_preempt0-21swapper/007:25:340
81560rcu_preempt0-21swapper/007:20:210
81550rcu_preempt3-21ksoftirqd/011:13:020
81550rcu_preempt27931-21latency_hist09:45:090
81550rcu_preempt0-21swapper/110:31:451
81550rcu_preempt0-21swapper/012:06:550
81550rcu_preempt0-21swapper/008:15:230
81550rcu_preempt0-21swapper/007:55:240
81540rcu_preempt21230-21/usr/sbin/munin10:35:280
81540rcu_preempt0-21swapper/111:32:471
81540rcu_preempt0-21swapper/107:30:131
81530rcu_preempt0-21swapper/108:01:331
81520rcu_preempt25508-21python07:50:321
81520rcu_preempt14612-21mailstats09:15:331
81520rcu_preempt0-21swapper/009:05:350
81510rcu_preempt0-21swapper/008:05:050
81510rcu_preempt0-21swapper/007:52:300
81490rcu_preempt29828-21df08:10:220
81480rcu_preempt0-21swapper/007:37:570
81480rcu_preempt0-21swapper/007:33:490
81470rcu_preempt28656-21diskstats08:05:230
81470rcu_preempt1795-21ntp_states08:25:310
81470rcu_preempt13067-21cat09:10:300
81450rcu_preempt23753-21if_eth107:45:270
81430rcu_preempt8938-21fw_conntrack08:55:250
1686499391cyclictest2659-21kworker/0:008:42:460
81380rcu_preempt14815-21sshd09:15:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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