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2026-04-29 - 01:53
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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 rackcslot0.osadl.org (updated Tue Apr 28, 2026 00:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2533921870,4sleep9117199cyclictest21:13:4515
2533921870,4sleep9117199cyclictest21:13:4515
92021750,4sleep4116599cyclictest23:25:1610
3013921660,6sleep13117899cyclictest23:03:295
48521640,0sleep50-21swapper/521:07:1611
48521640,0sleep50-21swapper/521:07:1611
665921620,1sleep66658-21systemd-cgroups22:55:0412
325872131106,20sleep70-21swapper/719:08:5213
327092127111,11sleep110-21swapper/1119:10:323
326452125101,19sleep30-21swapper/319:09:369
326952123102,17sleep140-21swapper/1419:10:196
3652120104,11sleep60-21swapper/619:11:1512
2395821170,5sleep1116099cyclictest21:22:111
326782115104,7sleep150-21swapper/1519:10:047
32589211594,16sleep90-21swapper/919:08:5415
3042421120,3sleep9117199cyclictest22:14:2815
32751210995,10sleep130-21swapper/1319:11:065
3127521080,1sleep10-21swapper/121:50:001
32601210792,10sleep20-21swapper/219:09:038
68721060,1sleep20-21swapper/223:19:218
1212921060,2sleep30-21swapper/321:27:179
2715821050,0sleep10-21swapper/122:04:581
433921040,2sleep124320-21sshd23:32:054
1401721040,1sleep120-21swapper/1222:58:554
32554210390,7sleep10-21swapper/119:08:301
2561821030,5sleep2116199cyclictest23:52:318
2461321020,4sleep14118199cyclictest22:47:436
1860021020,1sleep00-21swapper/023:27:040
124132990,1sleep130-21swapper/1321:51:165
56252980,1sleep120-21swapper/1223:04:164
216512980,1sleep80-21swapper/823:05:4814
196452980,1sleep60-21swapper/600:13:5812
3259029783,10sleep100-21swapper/1019:08:552
29732950,2sleep90-21swapper/920:32:0215
225352950,6sleep11117699cyclictest00:29:343
278802940,1sleep140-21swapper/1421:49:406
116712940,1sleep130-21swapper/1321:32:485
97172930,2sleep00-21swapper/000:13:040
83832930,2sleep11106-21ksoftirqd/1123:04:313
305562930,0sleep110-21swapper/1122:38:503
261012930,1sleep10971ktimersoftd/1022:23:022
111322930,0sleep90-21swapper/923:32:3415
95542910,1sleep150-21swapper/1521:20:487
95542910,1sleep150-21swapper/1521:20:487
295792900,0sleep50-21swapper/521:22:3111
46742870,0sleep60-21swapper/619:52:2512
3271028775,8sleep120-21swapper/1219:10:334
2940728770,13sleep00-21swapper/019:07:080
149962870,0sleep130-21swapper/1300:13:335
306962860,1sleep100-21swapper/1022:17:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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