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2025-03-21 - 08:07
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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 Fri Mar 21, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315422740,0sleep00-21swapper/021:22:490
317332720,1sleep10-21swapper/100:08:551
725526956,8sleep10-21swapper/119:06:101
246542670,0sleep10-21swapper/122:36:321
81142660,0sleep18115-21sh00:19:171
720226452,8sleep00-21swapper/019:05:370
218682610,0sleep10-21swapper/119:48:461
7673992928,0cyclictest231ktimersoftd/122:31:311
7673992828,0cyclictest0-21swapper/121:30:461
7673992827,1cyclictest0-21swapper/119:10:271
7672992815,13cyclictest0-21swapper/000:37:300
7672992812,0cyclictest0-21swapper/023:23:580
7672992810,18cyclictest0-21swapper/020:50:200
7673992626,0cyclictest0-21swapper/123:47:471
7673992622,2cyclictest231ktimersoftd/123:18:551
767399261,3cyclictest0-21swapper/121:54:271
767399260,2cyclictest21006-21ssh21:10:021
7672992625,1cyclictest0-21swapper/021:52:340
7673992510,0cyclictest0-21swapper/123:32:181
767399250,23cyclictest0-21swapper/122:42:041
7672992518,3cyclictest10184-21apache223:57:020
7672992510,10cyclictest97850irq/107-eth1-rx21:24:550
7672992510,0cyclictest0-21swapper/020:12:230
767399240,13cyclictest0-21swapper/121:38:501
7672992422,1cyclictest10184-21apache223:58:530
7673992319,3cyclictest10184-21apache223:40:081
7673992315,6cyclictest231ktimersoftd/123:13:531
7673992310,5cyclictest0-21swapper/100:28:381
767399230,22cyclictest0-21swapper/121:23:011
7672992323,0cyclictest0-21swapper/022:58:340
7672992322,0cyclictest0-21swapper/022:02:520
7672992318,3cyclictest81ktimersoftd/020:45:080
7672992317,4cyclictest10209-21apache223:38:280
7672992314,5cyclictest10209-21apache222:29:440
7672992312,6cyclictest1111-21runrttasks21:55:450
7672992311,7cyclictest0-21swapper/022:48:510
767299230,1cyclictest0-21swapper/021:35:240
767299230,0cyclictest13352-21kworker/u4:100:19:580
767399226,8cyclictest0-21swapper/120:58:561
767399223,16cyclictest0-21swapper/121:27:021
7673992220,1cyclictest817-21apache220:05:131
7673992220,1cyclictest547-21grep22:48:461
767399221,2cyclictest0-21swapper/122:15:021
7673992210,8cyclictest0-21swapper/121:48:191
7673992210,8cyclictest0-21swapper/121:38:131
767299227,6cyclictest18748-21diskmemload21:40:430
7672992220,1cyclictest817-21apache223:18:390
767299221,4cyclictest0-21swapper/021:31:540
7672992212,6cyclictest0-21swapper/022:10:120
7672992211,2cyclictest11000-21sh23:41:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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