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2026-06-14 - 06:04
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Sun Jun 14, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324342740,6sleep31400599cyclictest00:25:233
134491630,3ptp4l0-21swapper/219:25:162
134491620,4ptp4l0-21swapper/222:25:212
134491590,4ptp4l0-21swapper/120:00:121
134491590,4ptp4l0-21swapper/120:00:121
134491590,3ptp4l0-21swapper/221:23:202
134491590,3ptp4l0-21swapper/122:00:271
134491590,3ptp4l0-21swapper/120:20:261
134491570,4ptp4l0-21swapper/222:50:062
134491570,3ptp4l0-21swapper/123:10:221
134491560,4ptp4l0-21swapper/220:54:092
134491550,4ptp4l0-21swapper/200:17:242
134491540,4ptp4l0-21swapper/221:36:082
134491540,4ptp4l0-21swapper/221:00:032
165122530,6sleep20-21swapper/220:25:002
134491530,4ptp4l0-21swapper/221:55:092
134491530,4ptp4l0-21swapper/221:46:222
134491530,2ptp4l0-21swapper/000:29:530
134491520,4ptp4l0-21swapper/200:14:512
134491520,4ptp4l0-21swapper/019:08:170
134491520,3ptp4l0-21swapper/219:45:312
134491510,3ptp4l0-21swapper/200:06:142
134491510,2ptp4l0-21swapper/020:57:580
134491500,4ptp4l0-21swapper/222:08:012
134491500,3ptp4l0-21swapper/220:37:362
134491500,3ptp4l0-21swapper/023:05:210
134491500,3ptp4l0-21swapper/023:05:210
134491490,4ptp4l1400199cyclictest23:27:070
134491490,4ptp4l0-21swapper/223:32:102
134491490,10ptp4l0-21swapper/219:20:072
134491480,5ptp4l0-21swapper/222:04:422
134491480,4ptp4l0-21swapper/223:13:232
134491480,4ptp4l0-21swapper/222:13:442
134491480,13ptp4l0-21swapper/222:35:112
134491470,7ptp4l12071-21iostat19:05:171
1400299463,2cyclictest134491ptp4l19:44:051
134491460,4ptp4l0-21swapper/200:03:472
134491460,3ptp4l0-21swapper/023:51:350
134491450,4ptp4l0-21swapper/122:21:341
134491450,3ptp4l1400199cyclictest00:06:400
134491450,3ptp4l0-21swapper/123:52:411
134491450,3ptp4l0-21swapper/120:57:301
134491450,10ptp4l3376-21ls00:35:002
14004994438,4cyclictest33-21ksoftirqd/223:00:002
1400199442,39cyclictest5567-21cron00:40:000
1400199442,39cyclictest5567-21cron00:40:000
134491440,9ptp4l0-21swapper/222:15:352
134491440,9ptp4l0-21swapper/221:11:422
134491440,9ptp4l0-21swapper/022:25:540
134491440,7ptp4l0-21swapper/119:10:011
134491440,6ptp4l33-21ksoftirqd/200:35:252
134491440,6ptp4l33-21ksoftirqd/200:35:252
134491440,6ptp4l0-21swapper/200:20:132
134491440,5ptp4l33-21ksoftirqd/223:46:562
134491440,5ptp4l0-21swapper/323:15:113
134491440,5ptp4l0-21swapper/000:10:260
134491440,3ptp4l0-21swapper/121:52:431
134491440,3ptp4l0-21swapper/119:27:401
134491430,9ptp4l0-21swapper/222:22:562
134491430,5ptp4l5436-21df_inode21:10:160
134491430,5ptp4l0-21swapper/300:35:233
134491430,5ptp4l0-21swapper/300:35:233
134491430,5ptp4l0-21swapper/022:30:150
134491430,4ptp4l26539-21iostat_ios20:45:180
134491430,4ptp4l22263-21ntp_states20:35:233
134491430,3ptp4l28959-21apt-get00:20:133
134491430,3ptp4l0-21swapper/123:25:131
134491430,3ptp4l0-21swapper/123:05:121
134491430,3ptp4l0-21swapper/123:05:121
14001994235,4cyclictest21597-21wc00:05:000
134491420,9ptp4l0-21swapper/221:27:002
134491420,9ptp4l0-21swapper/220:33:532
134491420,9ptp4l0-21swapper/220:12:232
134491420,8ptp4l0-21swapper/223:08:272
134491420,8ptp4l0-21swapper/223:08:272
134491420,8ptp4l0-21swapper/220:47:522
134491420,5ptp4l9802-21apt-get21:20:111
134491420,5ptp4l3789-21ntp_states19:55:231
134491420,5ptp4l0-21swapper/321:55:173
134491420,4ptp4l5135-21apt-get21:10:131
134491420,4ptp4l24628-21ntp_states19:30:240
134491420,4ptp4l24628-21ntp_states19:30:240
134491420,4ptp4l21783-21iostat_ios19:25:170
134491420,4ptp4l14973-21iostat_ios21:30:180
134491420,4ptp4l12033-21apt-get22:35:113
134491420,4ptp4l0-21swapper/100:35:211
134491420,4ptp4l0-21swapper/100:35:211
134491420,4ptp4l0-21swapper/022:52:110
134491410,9ptp4l0-21swapper/221:43:322
134491410,9ptp4l0-21swapper/221:06:242
134491410,8ptp4l0-21swapper/220:01:082
134491410,8ptp4l0-21swapper/220:01:082
134491410,8ptp4l0-21swapper/100:28:291
134491410,7ptp4l0-21swapper/223:57:352
134491410,5ptp4l0-21swapper/120:25:301
134491410,5ptp4l0-21swapper/021:45:220
134491410,5ptp4l0-21swapper/019:35:130
134491410,5ptp4l0-21swapper/019:10:010
134491410,4ptp4l5093-21apt-get22:20:123
134491410,4ptp4l28692-21hddtemp_smartct20:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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