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2026-05-19 - 17:42
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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
Characteristics of the 50 highest latencies:
System rackcslot2.osadl.org (updated Tue May 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1741727052,8sleep10-21swapper/107:07:391
1722026754,8sleep00-21swapper/007:05:370
17720993737,0cyclictest0-21swapper/112:20:061
17720993510,24cyclictest0-21swapper/109:20:391
17720993130,0cyclictest0-21swapper/112:14:421
17720993023,4cyclictest27529-21apache210:39:251
17719993030,0cyclictest0-21swapper/009:13:590
1772099280,25cyclictest21680-21mailstats10:19:131
1771999280,6cyclictest0-21swapper/012:32:030
17720992727,0cyclictest0-21swapper/111:53:521
17720992727,0cyclictest0-21swapper/108:26:071
17719992727,0cyclictest0-21swapper/011:15:220
17719992718,4cyclictest18735-21munin-run09:33:550
1772099262,20cyclictest0-21swapper/109:28:011
17720992621,2cyclictest0-21swapper/111:41:341
17720992611,10cyclictest31587-21diskmemload11:00:381
1771999260,1cyclictest0-21swapper/011:09:280
17719992524,0cyclictest0-21swapper/010:40:470
17720992419,2cyclictest231ktimersoftd/108:19:061
17720992410,5cyclictest0-21swapper/111:24:051
17720992410,13cyclictest0-21swapper/108:30:231
17719992422,1cyclictest0-21swapper/009:43:560
17719992417,6cyclictest30385-21ssh10:31:010
17719992410,14cyclictest0-21swapper/007:45:300
1771999240,1cyclictest0-21swapper/011:08:350
1772099235,9cyclictest0-21swapper/109:39:081
17720992312,4cyclictest0-21swapper/109:29:271
17720992310,4cyclictest0-21swapper/107:59:111
17719992320,2cyclictest26443-21ssh11:52:180
17719992318,4cyclictest27529-21apache212:04:110
17719992313,6cyclictest0-21swapper/011:39:060
17719992310,7cyclictest0-21swapper/010:05:330
17719992310,3cyclictest0-21swapper/010:46:180
1772099225,10cyclictest0-21swapper/108:09:061
17720992220,1cyclictest27489-21kworker/1:010:14:071
17720992211,6cyclictest0-21swapper/111:59:401
17720992210,7cyclictest0-21swapper/108:59:071
17720992210,6cyclictest0-21swapper/110:51:301
17720992210,4cyclictest0-21swapper/112:09:061
17720992210,4cyclictest0-21swapper/110:08:571
1772099220,16cyclictest0-21swapper/112:08:281
17719992222,0cyclictest0-21swapper/008:01:070
17719992210,6cyclictest0-21swapper/009:34:130
17719992210,5cyclictest0-21swapper/012:38:380
17719992210,5cyclictest0-21swapper/010:01:260
1771999220,9cyclictest0-21swapper/012:14:120
1772099211,19cyclictest0-21swapper/109:59:401
17720992110,5cyclictest0-21swapper/108:44:051
17720992110,1cyclictest0-21swapper/111:10:241
1772099210,4cyclictest0-21swapper/109:55:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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