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2026-03-28 - 22:49
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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 Sat Mar 28, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850810irq/17-ehci_hcd28732-21kworker/1:207:09:591
81740rcu_preempt30757-21ssh10:19:581
81740rcu_preempt1911-21timerandwakeup12:30:111
81720rcu_preempt8704-21sh11:40:500
81710rcu_preempt30081-21ssh11:20:061
81710rcu_preempt17515-21ssh10:55:230
81700rcu_preempt8594-21apt-get10:39:551
81700rcu_preempt8187-21sh12:43:530
81700rcu_preempt6325-21ssh11:36:480
81700rcu_preempt4841-21sh12:36:111
81700rcu_preempt0-21swapper/111:05:031
81700rcu_preempt0-21swapper/107:35:081
81700rcu_preempt0-21swapper/012:13:380
81700rcu_preempt0-21swapper/010:36:140
81700rcu_preempt0-21swapper/009:34:440
81690rcu_preempt0-21swapper/111:56:541
81690rcu_preempt0-21swapper/111:17:411
81690rcu_preempt0-21swapper/111:13:581
81680rcu_preempt8882-21ssh11:41:311
81680rcu_preempt30902-21ssh11:21:360
81680rcu_preempt13392-21ntpq11:50:080
81680rcu_preempt0-21swapper/112:11:341
81680rcu_preempt0-21swapper/012:29:470
81680rcu_preempt0-21swapper/011:13:100
81670rcu_preempt2971-21munin-run07:34:441
81670rcu_preempt0-21swapper/110:55:111
81660rcu_preempt7164-21latency_hist11:39:441
81660rcu_preempt0-21swapper/009:29:370
81650rcu_preempt2138-21snmpd10:14:180
81650rcu_preempt12873-21grep09:45:051
81650rcu_preempt0-21swapper/110:52:151
81640rcu_preempt8065-21latency_hist07:54:450
81640rcu_preempt4982-21ntp_states09:30:041
81640rcu_preempt0-21swapper/111:26:071
81640rcu_preempt0-21swapper/010:59:590
81630rcu_preempt8316-21ssh09:35:501
81630rcu_preempt6016-21kworker/0:107:10:050
81630rcu_preempt27372-21df_abs09:09:590
81630rcu_preempt2138-21snmpd09:24:051
81630rcu_preempt0-21swapper/012:21:530
81630rcu_preempt0-21swapper/010:53:190
81630rcu_preempt0-21swapper/009:14:550
81630rcu_preempt0-21swapper/007:44:450
81620rcu_preempt32069-21sh10:21:420
81620rcu_preempt3048-21ssh09:26:061
81620rcu_preempt25450-21ssh12:14:561
81620rcu_preempt20387-21ssh09:59:591
81620rcu_preempt0-21swapper/008:45:080
81620rcu_preempt0-21swapper/008:15:000
81610rcu_preempt31138-21ntp_offset07:15:061
81610rcu_preempt3-21ksoftirqd/009:53:160
81610rcu_preempt0-21swapper/111:49:491
81610rcu_preempt0-21swapper/111:31:521
81610rcu_preempt0-21swapper/110:26:151
81610rcu_preempt0-21swapper/110:11:241
81610rcu_preempt0-21swapper/109:53:311
81610rcu_preempt0-21swapper/109:17:001
81610rcu_preempt0-21swapper/007:22:330
81600rcu_preempt2717-21ssh10:27:550
81600rcu_preempt0-21swapper/110:05:051
81600rcu_preempt0-21swapper/010:04:560
81590rcu_preempt32188-21ssh12:26:481
81590rcu_preempt3-21ksoftirqd/010:48:320
81590rcu_preempt29807-21ssh12:22:381
81590rcu_preempt15635-21sendmail08:24:440
81590rcu_preempt0-21swapper/112:05:161
81590rcu_preempt0-21swapper/111:45:261
81590rcu_preempt0-21swapper/111:00:251
81590rcu_preempt0-21swapper/110:45:311
81590rcu_preempt0-21swapper/110:37:361
81590rcu_preempt0-21swapper/108:50:041
81590rcu_preempt0-21swapper/108:30:001
81590rcu_preempt0-21swapper/108:28:271
81590rcu_preempt0-21swapper/108:16:531
81590rcu_preempt0-21swapper/107:25:001
81590rcu_preempt0-21swapper/107:25:001
81590rcu_preempt0-21swapper/107:20:091
81590rcu_preempt0-21swapper/011:59:580
81590rcu_preempt0-21swapper/009:48:050
81590rcu_preempt0-21swapper/009:35:090
81590rcu_preempt0-21swapper/008:39:390
81580rcu_preempt9919-21ssh11:44:540
81580rcu_preempt31815-21ssh12:25:220
81580rcu_preempt28263-21diskmemload11:08:410
81580rcu_preempt0-21swapper/110:31:581
81580rcu_preempt0-21swapper/110:16:191
81580rcu_preempt0-21swapper/109:41:371
81580rcu_preempt0-21swapper/011:17:510
81580rcu_preempt0-21swapper/010:40:250
81580rcu_preempt0-21swapper/010:16:510
81570rcu_preempt387-21ssh09:21:380
81570rcu_preempt26746-21ssh12:15:480
81570rcu_preempt19344-21ssh12:02:021
81570rcu_preempt0-21swapper/112:41:001
81570rcu_preempt0-21swapper/108:42:071
81570rcu_preempt0-21swapper/108:06:031
81570rcu_preempt0-21swapper/012:05:090
81570rcu_preempt0-21swapper/011:54:520
81570rcu_preempt0-21swapper/011:25:090
81570rcu_preempt0-21swapper/010:34:330
81570rcu_preempt0-21swapper/007:14:570
81560rcu_preempt27278-21df09:09:581
81560rcu_preempt19402-21sshd08:38:001
81560rcu_preempt18163-21munin-run08:34:440
81560rcu_preempt17486-21ssh09:54:440
81560rcu_preempt0-21swapper/108:24:271
81560rcu_preempt0-21swapper/108:04:031
81560rcu_preempt0-21swapper/107:49:521
81560rcu_preempt0-21swapper/011:30:050
81560rcu_preempt0-21swapper/010:00:040
81560rcu_preempt0-21swapper/009:42:130
81550rcu_preempt6918-21cpu07:49:550
81550rcu_preempt0-21swapper/108:56:431
81550rcu_preempt0-21swapper/107:55:351
81550rcu_preempt0-21swapper/107:47:001
81550rcu_preempt0-21swapper/007:25:090
81550rcu_preempt0-21swapper/007:25:090
81540rcu_preempt5262-21ssh12:37:420
81540rcu_preempt0-21swapper/109:00:431
81540rcu_preempt0-21swapper/108:46:301
81540rcu_preempt0-21swapper/108:12:031
81540rcu_preempt0-21swapper/008:25:080
30296995349cyclictest945-21usb-storage09:55:011
81520rcu_preempt26130-21diskstats09:05:001
81520rcu_preempt11843-21sshd08:08:000
81520rcu_preempt0-21swapper/009:05:070
81520rcu_preempt0-21swapper/008:41:220
81510rcu_preempt0-21swapper/007:39:530
81490rcu_preempt12138-21df08:09:590
81450rcu_preempt2567-21ntp_states07:30:070
30294994441cyclictest945-21usb-storage08:49:560
30294994441cyclictest41ktimersoftd/009:00:070
30296994339cyclictest945-21usb-storage07:39:591
30294994239cyclictest945-21usb-storage07:35:080
30294994138cyclictest945-21usb-storage08:01:360
89450370irq/17-ehci_hcd24428-21users08:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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