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2026-08-24 - 12:52
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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 highest latencies:
System rackdslot1.osadl.org (updated Mon Aug 24, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126521690,7sleep12315499cyclictest23:00:161
23154997033,8cyclictest25-21ksoftirqd/100:10:001
23153997023,6cyclictest9-21ksoftirqd/022:45:200
23154996732,4cyclictest25-21ksoftirqd/100:15:001
23154996731,4cyclictest25-21ksoftirqd/122:50:011
215292660,8sleep1231rcuc/120:15:171
215292660,8sleep1231rcuc/120:15:161
23154996531,5cyclictest25-21ksoftirqd/120:00:141
23153996532,4cyclictest9-21ksoftirqd/023:30:000
23153996530,4cyclictest9-21ksoftirqd/022:55:270
23153996530,4cyclictest9-21ksoftirqd/019:55:290
134491650,5ptp4l0-21swapper/220:40:122
23153996433,4cyclictest9-21ksoftirqd/020:45:240
23153996432,5cyclictest9-21ksoftirqd/023:40:140
23154996331,4cyclictest25-21ksoftirqd/120:55:261
23154996330,5cyclictest25-21ksoftirqd/100:15:261
23153996333,3cyclictest9-21ksoftirqd/020:10:200
23153996331,4cyclictest9-21ksoftirqd/019:16:340
23154996232,4cyclictest25-21ksoftirqd/122:10:191
23154996225,9cyclictest25-21ksoftirqd/121:55:001
23153996233,4cyclictest9-21ksoftirqd/022:15:130
23153996232,4cyclictest9-21ksoftirqd/000:35:180
23153996232,3cyclictest9-21ksoftirqd/019:10:140
23153996231,3cyclictest9-21ksoftirqd/020:00:170
23154996133,5cyclictest25-21ksoftirqd/120:10:171
23154996133,4cyclictest25-21ksoftirqd/122:40:241
23154996132,4cyclictest25-21ksoftirqd/119:45:251
23154996132,4cyclictest25-21ksoftirqd/119:45:251
23154996125,9cyclictest25-21ksoftirqd/100:25:011
23154996124,5cyclictest25-21ksoftirqd/121:20:001
23154996124,5cyclictest25-21ksoftirqd/121:20:001
23153996131,4cyclictest9-21ksoftirqd/020:40:160
23153996129,10cyclictest9-21ksoftirqd/020:25:180
23153996121,4cyclictest9-21ksoftirqd/000:20:250
23154996034,4cyclictest25-21ksoftirqd/121:45:221
23154996034,4cyclictest25-21ksoftirqd/121:45:221
23154996030,4cyclictest25-21ksoftirqd/121:40:231
23154996027,5cyclictest25-21ksoftirqd/123:55:261
23154996027,3cyclictest25-21ksoftirqd/119:50:181
23154996026,3cyclictest25-21ksoftirqd/123:51:511
23154996026,3cyclictest25-21ksoftirqd/123:05:021
23154996025,4cyclictest25-21ksoftirqd/120:40:151
23154996023,6cyclictest25-21ksoftirqd/100:30:011
23153996028,4cyclictest9-21ksoftirqd/020:30:130
23153996025,3cyclictest9-21ksoftirqd/022:30:240
23153996022,6cyclictest9-21ksoftirqd/021:15:220
23153996022,6cyclictest9-21ksoftirqd/021:15:220
134491600,4ptp4l0-21swapper/023:10:170
23154995928,4cyclictest25-21ksoftirqd/120:20:141
23154995925,2cyclictest25-21ksoftirqd/120:47:451
23154995924,3cyclictest25-21ksoftirqd/120:07:451
23153995932,4cyclictest9-21ksoftirqd/021:20:010
23153995917,10cyclictest9-21ksoftirqd/022:25:180
134491590,4ptp4l0-21swapper/322:05:373
23154995828,4cyclictest25-21ksoftirqd/123:45:201
23154995828,4cyclictest25-21ksoftirqd/123:45:201
23154995828,3cyclictest25-21ksoftirqd/100:35:171
23154995821,4cyclictest25-21ksoftirqd/121:25:141
23153995830,4cyclictest9-21ksoftirqd/000:30:190
23153995828,3cyclictest9-21ksoftirqd/019:20:270
134491580,5ptp4l0-21swapper/319:05:163
134491580,4ptp4l0-21swapper/221:40:222
23154995730,4cyclictest25-21ksoftirqd/122:50:131
23154995728,3cyclictest25-21ksoftirqd/120:50:181
23154995725,7cyclictest25-21ksoftirqd/119:20:131
23154995725,6cyclictest25-21ksoftirqd/100:30:261
23154995725,4cyclictest25-21ksoftirqd/122:30:271
23154995725,4cyclictest25-21ksoftirqd/120:25:171
23154995724,4cyclictest25-21ksoftirqd/100:00:231
23153995729,3cyclictest9-21ksoftirqd/023:50:140
23153995728,3cyclictest9-21ksoftirqd/000:15:280
134491570,5ptp4l0-21swapper/219:35:022
134491570,4ptp4l0-21swapper/322:14:383
23154995627,3cyclictest25-21ksoftirqd/122:35:131
23154995626,4cyclictest25-21ksoftirqd/119:35:271
23154995622,3cyclictest25-21ksoftirqd/123:35:151
23153995629,3cyclictest9-21ksoftirqd/020:50:270
23153995628,4cyclictest9-21ksoftirqd/000:25:000
23153995628,3cyclictest9-21ksoftirqd/020:05:130
23153995627,3cyclictest9-21ksoftirqd/023:20:250
23153995627,3cyclictest9-21ksoftirqd/020:35:210
23153995625,3cyclictest9-21ksoftirqd/023:00:190
23153995619,7cyclictest9-21ksoftirqd/019:40:170
23153995613,7cyclictest9-21ksoftirqd/020:15:200
23153995613,7cyclictest9-21ksoftirqd/020:15:200
134491560,5ptp4l0-21swapper/119:05:281
23154995528,4cyclictest25-21ksoftirqd/121:55:201
23154995526,3cyclictest25-21ksoftirqd/123:31:201
23154995525,2cyclictest25-21ksoftirqd/122:01:551
23154995524,3cyclictest25-21ksoftirqd/119:18:581
23154995522,3cyclictest25-21ksoftirqd/123:22:111
134491550,3ptp4l0-21swapper/219:28:362
134491550,11ptp4l0-21swapper/300:36:393
23154995426,3cyclictest25-21ksoftirqd/121:34:561
23154995413,6cyclictest25-21ksoftirqd/119:55:281
134491540,4ptp4l21406-21/usr/sbin/munin21:25:302
134491540,4ptp4l0-21swapper/000:00:290
134491540,3ptp4l0-21swapper/200:35:422
134491540,12ptp4l0-21swapper/300:15:573
2315499537,3cyclictest25-21ksoftirqd/123:10:191
23154995338,4cyclictest25-21ksoftirqd/119:40:131
23154995337,4cyclictest25-21ksoftirqd/121:00:171
23154995320,3cyclictest25-21ksoftirqd/119:10:131
23153995324,3cyclictest9-21ksoftirqd/021:10:220
134491530,4ptp4l0-21swapper/222:45:152
134491530,4ptp4l0-21swapper/220:05:522
134491530,4ptp4l0-21swapper/022:05:240
23154995222,3cyclictest25-21ksoftirqd/121:05:241
23154995222,3cyclictest25-21ksoftirqd/119:25:241
23154995212,7cyclictest25-21ksoftirqd/121:20:201
134491520,4ptp4l0-21swapper/319:35:043
134491520,3ptp4l0-21swapper/223:16:172
23154995135,4cyclictest25-21ksoftirqd/123:40:141
23154995120,3cyclictest25-21ksoftirqd/121:36:211
23154995115,4cyclictest25-21ksoftirqd/122:58:191
23153995120,4cyclictest9-21ksoftirqd/019:35:160
23153995116,8cyclictest9-21ksoftirqd/023:15:250
134491510,4ptp4l0-21swapper/219:49:262
134491510,4ptp4l0-21swapper/219:49:262
134491510,3ptp4l0-21swapper/219:31:502
134491510,14ptp4l21916-21ntpq19:05:220
23154995032,3cyclictest25-21ksoftirqd/123:18:091
23153995036,3cyclictest9-21ksoftirqd/000:15:000
23153995029,8cyclictest9-21ksoftirqd/022:20:200
23153995019,8cyclictest9-21ksoftirqd/019:30:010
134491500,5ptp4l0-21swapper/219:07:102
134491500,4ptp4l2315699cyclictest22:32:323
134491500,4ptp4l0-21swapper/019:34:320
23154994933,3cyclictest25-21ksoftirqd/122:15:131
2315499492,3cyclictest25-21ksoftirqd/119:30:231
23154994916,6cyclictest25-21ksoftirqd/123:25:241
23153994935,3cyclictest9-21ksoftirqd/022:00:010
134491490,4ptp4l0-21swapper/200:26:562
134491490,3ptp4l0-21swapper/300:02:533
134491490,3ptp4l0-21swapper/122:25:121
2315499484,3cyclictest25-21ksoftirqd/122:05:151
23153994833,4cyclictest9-21ksoftirqd/000:05:290
23153994832,3cyclictest9-21ksoftirqd/021:25:250
23153994819,3cyclictest9-21ksoftirqd/021:45:000
134491480,4ptp4l0-21swapper/223:35:152
2315599470,6cyclictest32064-21ssh21:45:262
2315599470,6cyclictest32064-21ssh21:45:262
23154994732,3cyclictest25-21ksoftirqd/120:35:011
23153994734,3cyclictest9-21ksoftirqd/022:00:150
2315399473,3cyclictest11438-21systemd-cgroups21:01:540
23153994733,3cyclictest9-21ksoftirqd/020:25:000
23153994732,4cyclictest9-21ksoftirqd/022:35:240
23153994732,3cyclictest9-21ksoftirqd/021:05:150
134491470,10ptp4l0-21swapper/223:20:142
2315399463,2cyclictest121rcu_preempt23:30:260
23153994632,4cyclictest9-21ksoftirqd/022:40:130
23153994632,4cyclictest9-21ksoftirqd/022:10:250
23153994628,2cyclictest9-21ksoftirqd/023:45:270
23153994628,2cyclictest9-21ksoftirqd/023:45:270
2315399462,5cyclictest0-21swapper/022:55:000
134491460,4ptp4l6114-21ls19:40:223
134491460,3ptp4l2315699cyclictest23:41:413
134491460,3ptp4l0-21swapper/323:19:493
134491460,3ptp4l0-21swapper/200:03:382
134491460,13ptp4l0-21swapper/219:13:202
23154994530,4cyclictest25-21ksoftirqd/121:10:241
23154994529,4cyclictest25-21ksoftirqd/120:35:221
23153994534,3cyclictest9-21ksoftirqd/023:10:000
23153994530,4cyclictest9-21ksoftirqd/021:30:220
23153994530,4cyclictest9-21ksoftirqd/019:45:140
23153994530,4cyclictest9-21ksoftirqd/019:45:140
134491450,9ptp4l0-21swapper/320:10:523
134491450,4ptp4l0-21swapper/223:45:462
134491450,4ptp4l0-21swapper/223:45:462
134491450,3ptp4l0-21swapper/321:57:383
134491450,3ptp4l0-21swapper/019:51:320
134491450,10ptp4l0-21swapper/321:16:083
134491450,10ptp4l0-21swapper/321:16:083
23154994430,4cyclictest25-21ksoftirqd/122:20:201
23153994431,3cyclictest9-21ksoftirqd/000:00:010
134491440,4ptp4l26019-21apt-get21:35:122
134491440,3ptp4l0-21swapper/323:35:573
134491440,3ptp4l0-21swapper/220:11:412
23153994328,3cyclictest9-21ksoftirqd/021:45:130
23153994328,3cyclictest9-21ksoftirqd/021:45:130
134491430,9ptp4l28431-21unixbench_singl23:55:292
134491430,9ptp4l0-21swapper/323:54:293
134491430,9ptp4l0-21swapper/319:26:443
134491430,6ptp4l0-21swapper/320:33:123
134491430,5ptp4l0-21swapper/320:30:013
134491430,4ptp4l6401-21apt-get00:20:122
134491430,4ptp4l2318-21gnome-shell23:29:593
134491430,4ptp4l2318-21gnome-shell23:21:593
134491430,4ptp4l0-21swapper/200:05:232
134491430,3ptp4l14995-21apt-get23:30:142
134491430,3ptp4l0-21swapper/322:27:143
134491430,3ptp4l0-21swapper/223:43:092
134491430,3ptp4l0-21swapper/220:47:542
2315599420,39cyclictest1317-21runrttasks19:52:242
23153994228,3cyclictest9-21ksoftirqd/020:55:280
23153994224,9cyclictest9-21ksoftirqd/021:50:180
134491420,9ptp4l0-21swapper/219:58:112
134491420,5ptp4l5508-21/usr/sbin/munin22:00:142
134491420,5ptp4l0-21swapper/322:58:493
134491420,5ptp4l0-21swapper/321:30:163
134491420,5ptp4l0-21swapper/300:25:033
134491420,5ptp4l0-21swapper/023:35:260
134491420,4ptp4l0-21swapper/223:09:412
134491420,4ptp4l0-21swapper/221:11:142
134491420,3ptp4l23722-21apt-get21:30:132
134491420,3ptp4l0-21swapper/221:16:402
134491420,3ptp4l0-21swapper/221:16:402
134491420,3ptp4l0-21swapper/220:56:422
23155994136,3cyclictest33-21ksoftirqd/222:00:002
23153994120,8cyclictest9-21ksoftirqd/021:40:000
134491410,9ptp4l0-21swapper/321:28:213
134491410,9ptp4l0-21swapper/320:51:083
134491410,5ptp4l0-21swapper/320:15:203
134491410,5ptp4l0-21swapper/320:15:203
134491410,5ptp4l0-21swapper/320:05:123
134491410,5ptp4l0-21swapper/300:30:223
134491410,5ptp4l0-21swapper/223:25:102
134491410,4ptp4l0-21swapper/320:20:173
134491410,4ptp4l0-21swapper/220:20:512
134491410,3ptp4l309-21apt-get20:40:123
134491410,3ptp4l27140-21ntp_states21:35:243
134491410,3ptp4l23870-21apt-get23:48:053
134491410,3ptp4l23870-21apt-get23:48:053
134491410,3ptp4l23679-21apt-get22:40:123
134491410,3ptp4l23183-21apt-get19:10:103
134491410,1ptp4l0-21swapper/319:24:023
23155994033,3cyclictest33-21ksoftirqd/220:15:202
23155994033,3cyclictest33-21ksoftirqd/220:15:202
134491400,5ptp4l2315599cyclictest20:30:122
134491400,5ptp4l0-21swapper/321:20:293
134491400,5ptp4l0-21swapper/320:45:223
134491400,5ptp4l0-21swapper/320:00:143
134491400,5ptp4l0-21swapper/219:40:242
134491400,5ptp4l0-21swapper/219:20:002
134491400,5ptp4l0-21swapper/200:10:132
134491400,4ptp4l9625-21/usr/sbin/munin21:00:282
134491400,4ptp4l26266-21iostat_ios19:15:173
134491400,4ptp4l0-21swapper/322:21:213
134491400,4ptp4l0-21swapper/321:40:203
134491400,4ptp4l0-21swapper/321:11:153
134491400,4ptp4l0-21swapper/321:05:133
134491400,4ptp4l0-21swapper/319:30:123
134491400,4ptp4l0-21swapper/300:20:013
134491400,4ptp4l0-21swapper/222:55:002
134491400,4ptp4l0-21swapper/222:54:502
134491400,3ptp4l9640-21apt-get21:00:113
134491400,3ptp4l8616-21ntp_states22:05:242
134491400,3ptp4l6143-21ntp_states20:50:242
134491400,3ptp4l484-21apt-get21:50:122
134491400,3ptp4l28480-21apt-get22:50:103
134491400,3ptp4l24089-21apt-get23:50:002
134491400,3ptp4l15433-21ls22:20:222
134491400,3ptp4l15313-21ls20:00:202
134491400,3ptp4l0-21swapper/322:00:113
134491400,3ptp4l0-21swapper/200:30:222
134491390,5ptp4l0-21swapper/321:46:463
134491390,5ptp4l0-21swapper/321:46:463
134491390,5ptp4l0-21swapper/320:55:193
134491390,5ptp4l0-21swapper/319:45:123
134491390,5ptp4l0-21swapper/319:45:123
134491390,5ptp4l0-21swapper/221:20:132
134491390,4ptp4l548-21cat21:50:163
134491390,4ptp4l0-21swapper/323:55:213
134491390,4ptp4l0-21swapper/323:30:213
134491390,4ptp4l0-21swapper/323:08:193
134491390,4ptp4l0-21swapper/323:00:173
134491390,4ptp4l0-21swapper/322:48:453
134491390,4ptp4l0-21swapper/322:15:003
134491390,4ptp4l0-21swapper/319:52:273
134491390,4ptp4l0-21swapper/300:11:243
134491390,4ptp4l0-21swapper/223:10:162
134491390,4ptp4l0-21swapper/223:03:112
134491390,4ptp4l0-21swapper/222:28:202
134491390,4ptp4l0-21swapper/222:10:142
134491390,4ptp4l0-21swapper/220:25:152
134491390,4ptp4l0-21swapper/219:20:282
134491390,4ptp4l0-21swapper/200:15:132
134491390,3ptp4l19897-21irqstats22:30:182
134491380,5ptp4l0-21swapper/322:35:123
134491380,4ptp4l0-21swapper/323:10:113
134491380,4ptp4l0-21swapper/320:35:263
134491380,4ptp4l0-21swapper/319:58:573
134491380,4ptp4l0-21swapper/300:05:023
134491380,4ptp4l0-21swapper/222:37:292
134491380,4ptp4l0-21swapper/222:15:022
134491380,4ptp4l0-21swapper/221:07:322
134491380,4ptp4l0-21swapper/220:35:082
134491380,3ptp4l0-21swapper/222:40:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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