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2026-04-20 - 01:27
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Sun Apr 19, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81850rcu_preempt3820-21ssh12:40:220
81790rcu_preempt0-21swapper/110:29:201
81770rcu_preempt9991-21ssh11:48:540
81770rcu_preempt0-21swapper/107:14:551
81750rcu_preempt11903-1kworker/1:0H10:16:091
81720rcu_preempt5754-21latency_hist07:50:431
81710rcu_preempt0-21swapper/112:10:571
81710rcu_preempt0-21swapper/012:41:240
81710rcu_preempt0-21swapper/012:12:270
81710rcu_preempt0-21swapper/011:44:310
81710rcu_preempt0-21swapper/011:07:390
81710rcu_preempt0-21swapper/010:35:580
81700rcu_preempt0-21swapper/110:50:541
81700rcu_preempt0-21swapper/110:46:001
81700rcu_preempt0-21swapper/109:16:031
81700rcu_preempt0-21swapper/010:01:340
81690rcu_preempt0-21swapper/110:23:071
81690rcu_preempt0-21swapper/110:12:011
81690rcu_preempt0-21swapper/109:45:501
81690rcu_preempt0-21swapper/109:21:061
81680rcu_preempt4317-21ssh09:31:180
81680rcu_preempt4317-21ssh09:31:180
81680rcu_preempt28665-1kworker/0:2H10:21:510
81680rcu_preempt25630-21ssh12:19:120
81670rcu_preempt951-21if_eth009:26:001
81670rcu_preempt24622-21munin-run09:05:430
81670rcu_preempt17002-21turbostat08:40:381
81670rcu_preempt16546-21diskstats09:55:580
81670rcu_preempt13023-21sh11:55:171
81670rcu_preempt0-21swapper/112:21:421
81670rcu_preempt0-21swapper/111:42:311
89450660irq/17-ehci_hcd111rcuc/010:46:560
81660rcu_preempt25404-21fw_forwarded_lo11:16:000
81660rcu_preempt19243-21ntp_states12:06:070
81660rcu_preempt1839-21munin-run07:35:420
81660rcu_preempt0-21swapper/109:42:511
81650rcu_preempt19-21ksoftirqd/110:31:041
81650rcu_preempt14720-21/usr/sbin/munin10:55:561
81640rcu_preempt7317-21idleruntime07:56:001
81640rcu_preempt32612-21grep07:26:050
81640rcu_preempt28755-21ntp_states07:11:040
81640rcu_preempt28030-21df11:20:581
81640rcu_preempt2697-21ssh10:31:070
81640rcu_preempt21806-21rt-features08:51:091
81640rcu_preempt0-21swapper/111:30:391
81640rcu_preempt0-21swapper/110:09:211
81640rcu_preempt0-21swapper/108:41:031
81640rcu_preempt0-21swapper/009:12:440
81630rcu_preempt19-21ksoftirqd/109:51:441
81630rcu_preempt13338-21timerwakeupswit10:51:100
81630rcu_preempt0-21swapper/111:34:301
81630rcu_preempt0-21swapper/108:25:541
81630rcu_preempt0-21swapper/011:11:080
81630rcu_preempt0-21swapper/010:15:540
81630rcu_preempt0-21swapper/009:35:580
89850620irq/17-ehci_hcd21944-21ssh11:08:571
81620rcu_preempt913-21ssh09:26:000
81620rcu_preempt4370-21munin-run07:45:420
81620rcu_preempt23331-21ntpq11:11:061
81620rcu_preempt0-21swapper/112:36:201
81620rcu_preempt0-21swapper/011:30:450
81620rcu_preempt0-21swapper/009:23:100
81610rcu_preempt8187-21ssh11:45:561
81610rcu_preempt3584-21if_err_can007:41:001
81610rcu_preempt13157-21munin-run11:55:430
81610rcu_preempt0-21swapper/111:16:041
81610rcu_preempt0-21swapper/011:24:310
81600rcu_preempt3-21ksoftirqd/010:28:010
81600rcu_preempt25896-21munin-run09:10:430
81600rcu_preempt14151-21ssh11:56:071
81600rcu_preempt0-21swapper/112:30:541
81600rcu_preempt0-21swapper/111:38:041
81600rcu_preempt0-21swapper/110:43:311
81600rcu_preempt0-21swapper/109:57:581
81600rcu_preempt0-21swapper/009:17:470
81590rcu_preempt0-21swapper/112:41:491
81590rcu_preempt0-21swapper/111:05:371
81590rcu_preempt0-21swapper/110:01:181
81590rcu_preempt0-21swapper/109:31:001
81590rcu_preempt0-21swapper/109:31:001
81590rcu_preempt0-21swapper/107:45:571
81590rcu_preempt0-21swapper/011:30:370
81580rcu_preempt3375-21ssh11:36:020
81580rcu_preempt23943-21apt-get10:10:550
81580rcu_preempt17903-21ssh12:04:180
81580rcu_preempt0-21swapper/112:18:411
81580rcu_preempt0-21swapper/112:01:021
81580rcu_preempt0-21swapper/109:36:101
81580rcu_preempt0-21swapper/108:31:001
81580rcu_preempt0-21swapper/108:16:371
81580rcu_preempt0-21swapper/107:31:001
81580rcu_preempt0-21swapper/011:03:480
81580rcu_preempt0-21swapper/010:59:470
81570rcu_preempt31979-21df07:25:561
81570rcu_preempt30110-21ssh12:26:350
81570rcu_preempt30110-21ssh12:26:350
81570rcu_preempt22834-21ssh10:07:210
81570rcu_preempt13599-21ssh09:50:570
81570rcu_preempt10542-21ssh09:44:380
81570rcu_preempt0-21swapper/112:27:021
81570rcu_preempt0-21swapper/112:27:021
81570rcu_preempt0-21swapper/112:07:411
81570rcu_preempt0-21swapper/110:36:591
81570rcu_preempt0-21swapper/107:19:091
81570rcu_preempt0-21swapper/012:22:380
81570rcu_preempt0-21swapper/011:56:150
81570rcu_preempt0-21swapper/010:43:140
81570rcu_preempt0-21swapper/007:51:070
81560rcu_preempt8039-21cat07:56:080
81560rcu_preempt2138-21snmpd08:15:431
81560rcu_preempt0-21swapper/109:11:471
81560rcu_preempt0-21swapper/107:22:301
81560rcu_preempt0-21swapper/008:36:110
81550rcu_preempt31454-21ssh12:30:470
81550rcu_preempt20903-21cut08:50:430
81550rcu_preempt0-21swapper/108:45:521
81550rcu_preempt0-21swapper/108:01:041
81550rcu_preempt0-21swapper/108:01:041
81550rcu_preempt0-21swapper/009:45:480
81540rcu_preempt0-21swapper/109:06:381
81530rcu_preempt2704-21ntp_states07:36:041
81530rcu_preempt19649-21latency_hist08:45:440
81530rcu_preempt13169-21users08:16:080
81530rcu_preempt0-21swapper/108:10:371
81530rcu_preempt0-21swapper/007:45:590
81520rcu_preempt8776-21irqstats08:01:010
81520rcu_preempt8776-21irqstats08:01:010
81520rcu_preempt30019-21ntp_states07:16:040
81520rcu_preempt0-21swapper/109:03:251
81520rcu_preempt0-21swapper/108:24:181
81520rcu_preempt0-21swapper/008:51:060
81520rcu_preempt0-21swapper/008:07:350
29171995248cyclictest945-21usb-storage08:56:081
81510rcu_preempt0-21swapper/008:30:350
81490rcu_preempt30808-21diskstats07:20:570
81480rcu_preempt11093-21fw_conntrack08:11:000
29170994844cyclictest945-21usb-storage08:55:510
29170994744cyclictest945-21usb-storage08:33:580
81430rcu_preempt13614-21fw_forwarded_lo08:20:580
89450300irq/17-ehci_hcd0-21swapper/007:40:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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