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2026-05-05 - 16:46
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Tue May 05, 2026 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt7613-21latency_hist08:35:291
81730rcu_preempt30781-21sshd07:55:551
81730rcu_preempt23055-21munin-run10:25:301
81720rcu_preempt27064-21ssh12:25:541
81710rcu_preempt0-21swapper/109:45:421
81700rcu_preempt2192-21snmpd09:00:411
81700rcu_preempt1950-21munin-run12:40:310
146550700irq/30-eth0-tx-4676-21apache207:10:031
81690rcu_preempt0-21swapper/011:05:160
81690rcu_preempt0-21swapper/007:35:450
81680rcu_preempt0-21swapper/010:29:580
81680rcu_preempt0-21swapper/007:05:510
81670rcu_preempt25376-21apt-get09:25:431
81670rcu_preempt18080-21awk12:10:471
81670rcu_preempt0-21swapper/112:08:111
81670rcu_preempt0-21swapper/110:38:291
81670rcu_preempt0-21swapper/011:36:270
81660rcu_preempt14694-21timerandwakeup11:05:561
81660rcu_preempt0-21swapper/110:51:111
81660rcu_preempt0-21swapper/109:22:321
81660rcu_preempt0-21swapper/011:59:540
81660rcu_preempt0-21swapper/009:32:310
81650rcu_preempt3415-21ssh11:45:301
81650rcu_preempt13368-1kworker/1:1H10:56:411
81650rcu_preempt0-21swapper/007:54:420
81640rcu_preempt32416-21/usr/sbin/munin08:05:471
81640rcu_preempt32205-21/usr/sbin/munin10:40:491
81640rcu_preempt25792-21switchtime07:35:531
81640rcu_preempt0-21swapper/112:00:491
81640rcu_preempt0-21swapper/111:32:031
81640rcu_preempt0-21swapper/111:28:021
81640rcu_preempt0-21swapper/111:04:141
81640rcu_preempt0-21swapper/110:25:451
81640rcu_preempt0-21swapper/109:31:021
81630rcu_preempt26963-21ssh10:30:520
81630rcu_preempt17885-21ssh09:11:171
81630rcu_preempt14788-21ssh10:08:021
81630rcu_preempt0-21swapper/110:14:201
81630rcu_preempt0-21swapper/010:55:000
81620rcu_preempt0-21swapper/112:39:111
81620rcu_preempt0-21swapper/111:40:151
81620rcu_preempt0-21swapper/110:45:471
81620rcu_preempt0-21swapper/110:31:191
81620rcu_preempt0-21swapper/011:21:470
81620rcu_preempt0-21swapper/011:08:540
81620rcu_preempt0-21swapper/010:35:430
81610rcu_preempt2719-21df_abs08:15:430
81610rcu_preempt0-21swapper/107:34:101
81610rcu_preempt0-21swapper/012:15:410
81600rcu_preempt25279-21ssh12:23:291
81600rcu_preempt16378-21diskmemload11:40:510
81600rcu_preempt14044-21switchtime10:05:550
81600rcu_preempt10504-21munin-plugin-st11:00:300
81600rcu_preempt0-21swapper/111:50:511
81600rcu_preempt0-21swapper/111:15:521
81600rcu_preempt0-21swapper/110:18:081
81600rcu_preempt0-21swapper/109:42:041
81600rcu_preempt0-21swapper/107:10:511
81600rcu_preempt0-21swapper/008:40:490
81590rcu_preempt9720-21/usr/sbin/munin11:55:491
81590rcu_preempt32702-21ssh09:36:311
81590rcu_preempt29514-21memory12:30:501
81590rcu_preempt24159-21ssh11:24:151
81590rcu_preempt17816-21ssh11:11:561
81590rcu_preempt0-21swapper/111:45:481
81590rcu_preempt0-21swapper/109:17:131
81590rcu_preempt0-21swapper/011:14:330
81580rcu_preempt4349-21ntp_states11:45:520
81580rcu_preempt21203-21ntpq10:20:490
81580rcu_preempt12057-21apt-esm-hook12:00:430
81580rcu_preempt11331-21/usr/sbin/munin08:50:291
81580rcu_preempt10478-21ssh09:58:551
81580rcu_preempt0-21swapper/112:17:011
81580rcu_preempt0-21swapper/010:48:220
81580rcu_preempt0-21swapper/010:40:530
81580rcu_preempt0-21swapper/009:40:300
81570rcu_preempt8481-21ssh11:53:330
81570rcu_preempt17300-21ssh12:09:470
81570rcu_preempt0-21swapper/108:00:381
81570rcu_preempt0-21swapper/107:45:521
81570rcu_preempt0-21swapper/010:17:400
81570rcu_preempt0-21swapper/009:58:270
81570rcu_preempt0-21swapper/009:28:410
81560rcu_preempt4946-21ssh09:46:130
81560rcu_preempt27085-21ssh11:29:470
81560rcu_preempt25343-21ssh12:23:400
81560rcu_preempt21322-21ssh09:17:270
81560rcu_preempt18216-21ssh09:12:120
81560rcu_preempt1570-21if_can008:10:470
81560rcu_preempt0-21swapper/110:04:221
81560rcu_preempt0-21swapper/109:54:301
81560rcu_preempt0-21swapper/108:21:161
81560rcu_preempt0-21swapper/108:11:351
81560rcu_preempt0-21swapper/107:25:331
81560rcu_preempt0-21swapper/107:25:331
81560rcu_preempt0-21swapper/012:14:550
81560rcu_preempt0-21swapper/009:53:270
81560rcu_preempt0-21swapper/009:40:130
81560rcu_preempt0-21swapper/007:14:340
81550rcu_preempt16758-21ssh10:13:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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