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2025-12-09 - 14:52
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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 Dec 09, 2025 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1642421880,6sleep152018799cyclictest23:22:467
1642421880,6sleep152018799cyclictest23:22:467
667521490,8sleep22016999cyclictest22:47:318
2830921420,6sleep132018599cyclictest22:19:215
19582211993,21sleep80-21swapper/819:11:0114
194692119102,13sleep00-21swapper/019:09:330
3243321170,7sleep102017999cyclictest22:04:512
197042115103,8sleep50-21swapper/519:12:0211
19605211392,17sleep140-21swapper/1419:11:236
1367621080,0sleep60-21swapper/623:10:5112
1367621080,0sleep60-21swapper/623:10:5112
19602210783,19sleep110-21swapper/1119:11:203
19697210278,19sleep150-21swapper/1519:11:567
772221000,2sleep77677-21sshd22:51:2113
1647621000,1sleep130-21swapper/1321:33:215
93372980,1sleep00-21swapper/023:06:450
40422980,1sleep22016999cyclictest00:11:148
259902980,6sleep22016999cyclictest23:00:538
256992980,1sleep1025698-21systemd-cgroups21:41:352
70072970,5sleep82017799cyclictest21:28:2714
1959329771,21sleep20-21swapper/219:11:118
60652950,1sleep120-21swapper/1223:36:224
325122950,2sleep1132515-21run-parts21:57:233
200112930,1sleep120-21swapper/1222:22:334
236882920,0sleep30-21swapper/323:49:519
200392920,7sleep92017899cyclictest00:00:5515
1961729275,4sleep90-21swapper/919:11:3415
298822890,1sleep40-21swapper/423:08:5710
298822890,1sleep40-21swapper/423:08:5710
277592890,0sleep150-21swapper/1523:27:517
114392890,1sleep50-21swapper/523:10:3411
114392890,1sleep50-21swapper/523:10:3411
87062880,0sleep40-21swapper/422:17:2010
1959728875,8sleep60-21swapper/619:11:1512
25572870,1sleep40-21swapper/420:07:5310
1970628772,11sleep70-21swapper/719:12:0413
65402860,2sleep70-21swapper/723:32:4813
137852860,0sleep10-21swapper/123:18:161
137852860,0sleep10-21swapper/123:18:161
36272850,2sleep122018499cyclictest21:24:144
264692850,0sleep20-21swapper/200:13:558
200702850,0sleep70-21swapper/721:44:2913
73372830,1sleep110-21swapper/1121:50:583
3202830,0sleep100-21swapper/1020:43:012
3202830,0sleep100-21swapper/1020:43:012
310932830,1sleep121131ktimersoftd/1222:53:504
1960928375,4sleep10-21swapper/119:11:261
1957728375,4sleep30-21swapper/319:10:569
323922820,0sleep120-21swapper/1200:26:074
205562820,0sleep140-21swapper/1421:15:436
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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