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2026-03-18 - 08:41
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot8.osadl.org (updated Wed Mar 18, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273562821700,1sleep02703740-21kworker/0:0+kacpid21:17:160
2566754992926,1cyclictest0-21swapper/319:35:013
2566754992926,1cyclictest0-21swapper/319:35:003
2566754992825,1cyclictest0-21swapper/319:25:003
2566754992421,1cyclictest0-21swapper/300:35:003
2566754992219,1cyclictest0-21swapper/322:45:013
2566754992118,1cyclictest0-21swapper/300:10:003
256675499211,14cyclictest2941282-21taskset00:00:003
26075492203,5sleep22607570-21apt-get19:40:122
2566754991916,1cyclictest0-21swapper/320:45:153
256675499191,14cyclictest2607573-21chrt19:40:123
2566754991815,1cyclictest0-21swapper/321:20:213
256675499181,13cyclictest2666175-21taskset20:25:173
256675499179,6cyclictest2767973-21turbostat21:49:553
256675499176,9cyclictest2851437-21turbostat22:54:553
2566754991715,0cyclictest0-21swapper/300:05:013
2566754991714,1cyclictest0-21swapper/323:15:183
2566754991714,1cyclictest0-21swapper/322:25:153
2566754991714,1cyclictest0-21swapper/320:20:023
256675499171,13cyclictest2581633-21taskset19:20:003
256675499171,12cyclictest2954286-21chrt00:10:103
256675499171,12cyclictest2878586-21taskset23:10:153
256675499171,12cyclictest2806345-21turbostat22:15:003
256675499171,12cyclictest2573084-21turbostat19:15:003
256675499170,5cyclictest2755132-21turbostat21:39:553
28517062160,9sleep12851779-21tr22:50:101
256675499167,6cyclictest27870412sleep321:59:113
2566754991613,1cyclictest0-21swapper/323:45:163
2566754991613,1cyclictest0-21swapper/323:05:193
2566754991613,1cyclictest0-21swapper/322:35:163
2566754991613,1cyclictest0-21swapper/319:35:223
2566754991613,1cyclictest0-21swapper/300:35:113
256675499161,12cyclictest2972903-21taskset00:21:123
256675499161,12cyclictest2915157-21taskset23:35:323
256675499161,12cyclictest2902974-21taskset23:30:073
256675499161,12cyclictest2896170-21taskset23:22:463
256675499161,12cyclictest2851063-21chrt22:45:263
256675499161,12cyclictest2826458-21chrt22:30:153
256675499161,12cyclictest2793367-21taskset22:02:543
256675499161,12cyclictest2780656-21chrt21:54:063
256675499161,12cyclictest2767963-21turbostat21:45:003
256675499161,12cyclictest2767963-21turbostat21:45:003
256675499161,12cyclictest2710084-21chrt20:58:263
256675499161,12cyclictest2681555-21taskset20:35:183
256675499161,12cyclictest2652132-21taskset20:12:103
256675499161,12cyclictest2638984-21chrt20:00:483
256675499161,12cyclictest2618767-21taskset19:45:173
256675499160,13cyclictest2921675-21taskset23:41:453
25659342161,3sleep00-21swapper/019:05:240
256675499151,11cyclictest2928603-21taskset23:50:063
256675499151,11cyclictest2928603-21taskset23:50:063
256675499151,11cyclictest2901747-21taskset23:25:183
256675499151,11cyclictest2863484-21taskset22:55:203
256675499151,11cyclictest2813006-21taskset22:20:063
256675499151,11cyclictest2812422-21taskset22:16:013
256675499151,11cyclictest2793776-21taskset22:05:033
256675499151,11cyclictest2755125-21turbostat21:35:003
256675499151,11cyclictest2748314-21taskset21:25:273
256675499151,11cyclictest2735503-21chrt21:15:423
256675499151,11cyclictest2710760-21taskset21:00:163
256675499151,11cyclictest2697671-21taskset20:50:053
256675499151,11cyclictest2677872-21taskset20:30:333
256675499151,11cyclictest2660748-21taskset20:20:153
256675499151,11cyclictest2642183-21taskset20:05:163
256675499151,11cyclictest2632586-21taskset19:56:073
256675499151,11cyclictest2626159-21taskset19:51:063
256675499150,12cyclictest2979274-21chrt00:26:053
256675499150,12cyclictest2966406-21chrt00:15:233
256675499150,12cyclictest2864508-21taskset23:00:013
256675499150,12cyclictest2723496-21taskset21:10:143
256675499150,12cyclictest2722787-21taskset21:06:323
256675499150,12cyclictest2690757-21chrt20:41:193
256675499150,12cyclictest2593637-21chrt19:25:213
307598140,9rtkit-daemon2684339-21taskset20:36:210
307598140,8rtkit-daemon2871100-21/usr/sbin/munin23:05:130
307598140,8rtkit-daemon2849903-21kthreadcore22:45:170
307598130,8rtkit-daemon2605228-21cut19:35:170
307598130,2rtkit-daemon217-21plymouthd22:15:220
307598120,7rtkit-daemon714-21snmpd23:30:050
307598120,7rtkit-daemon3256-21sendmail-mta21:39:190
307598110,3rtkit-daemon714-21snmpd00:26:350
307598110,2rtkit-daemon217-21plymouthd20:59:110
29056012111,2sleep10-21swapper/123:30:181
28837492111,3sleep22883783-21apt-get23:15:122
27443212110,8sleep22746196-21tr21:25:152
27160902110,8sleep02716273-21apt-config21:00:250
25951132110,8sleep22595688-21cut19:30:142
25951132110,8sleep22595688-21cut19:30:142
307598100,6rtkit-daemon468-21systemd-logind23:56:440
307598100,6rtkit-daemon3256-21sendmail-mta23:25:240
307598100,6rtkit-daemon3256-21sendmail-mta21:58:540
307598100,6rtkit-daemon3256-21sendmail-mta21:11:540
307598100,5rtkit-daemon2925291-21kthreadcore23:45:180
307598100,5rtkit-daemon2788043-21cut22:00:170
307598100,4rtkit-daemon2819702-21chrt22:25:120
307598100,2rtkit-daemon217-21plymouthd20:34:240
28079982100,7sleep12808956-21grep22:15:171
26442412100,7sleep02644709-21cat20:05:180
30759890,6rtkit-daemon217-21plymouthd19:17:030
30759890,5rtkit-daemon714-21snmpd23:02:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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