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2026-07-14 - 07:38
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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 Tue Jul 14, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491840,18ptp4l8422-21apt-get23:50:031
156082830,4sleep20-21swapper/221:45:192
161272720,5sleep00-21swapper/022:55:260
290142680,3sleep00-21swapper/019:55:210
6930996735,4cyclictest33-21ksoftirqd/222:30:012
6930996631,5cyclictest33-21ksoftirqd/222:45:012
6930996433,8cyclictest33-21ksoftirqd/200:20:262
6930996431,5cyclictest33-21ksoftirqd/220:50:152
6930996333,9cyclictest33-21ksoftirqd/223:35:282
6930996332,7cyclictest33-21ksoftirqd/221:00:212
6930996329,8cyclictest33-21ksoftirqd/223:05:212
6930996329,6cyclictest33-21ksoftirqd/221:30:142
6930996328,4cyclictest33-21ksoftirqd/223:58:382
6928996329,4cyclictest9-21ksoftirqd/022:50:200
6930996230,6cyclictest33-21ksoftirqd/222:00:002
6930996229,7cyclictest33-21ksoftirqd/219:25:162
6930996129,9cyclictest33-21ksoftirqd/222:20:172
6930996128,6cyclictest33-21ksoftirqd/223:45:152
6930996123,6cyclictest33-21ksoftirqd/220:45:202
6928996128,5cyclictest9-21ksoftirqd/021:15:160
6928996126,5cyclictest9-21ksoftirqd/021:20:290
6930996030,6cyclictest33-21ksoftirqd/200:09:052
6930996030,3cyclictest33-21ksoftirqd/219:55:002
6930996028,6cyclictest33-21ksoftirqd/222:45:182
6930996027,5cyclictest33-21ksoftirqd/219:10:192
6930996025,5cyclictest33-21ksoftirqd/223:50:232
6930996025,5cyclictest33-21ksoftirqd/221:15:132
6930996015,43cyclictest0-21swapper/219:40:292
6928996028,5cyclictest9-21ksoftirqd/021:10:000
6928996027,4cyclictest9-21ksoftirqd/021:35:140
134491600,3ptp4l646-21forks20:05:163
6930995930,5cyclictest33-21ksoftirqd/220:55:152
6930995928,6cyclictest33-21ksoftirqd/223:40:162
6930995925,5cyclictest33-21ksoftirqd/222:50:222
6928995931,5cyclictest9-21ksoftirqd/000:15:280
693099582,33cyclictest0-21swapper/223:31:452
6930995822,8cyclictest33-21ksoftirqd/219:22:372
692899584,10cyclictest9-21ksoftirqd/020:45:140
6928995828,5cyclictest9-21ksoftirqd/022:40:190
6928995826,5cyclictest9-21ksoftirqd/020:56:550
6928995825,5cyclictest9-21ksoftirqd/019:34:070
6928995825,3cyclictest9-21ksoftirqd/023:30:340
134491580,3ptp4l0-21swapper/020:10:240
6930995728,5cyclictest33-21ksoftirqd/222:30:202
6928995729,3cyclictest9-21ksoftirqd/019:38:590
6928995727,7cyclictest9-21ksoftirqd/022:20:000
6928995725,5cyclictest9-21ksoftirqd/022:24:200
6928995724,3cyclictest9-21ksoftirqd/022:39:120
6928995724,3cyclictest9-21ksoftirqd/022:28:530
6928995724,3cyclictest9-21ksoftirqd/019:21:050
134491570,13ptp4l0-21swapper/122:35:231
134491570,10ptp4l0-21swapper/121:26:251
6930995625,5cyclictest33-21ksoftirqd/221:20:162
6930995624,7cyclictest33-21ksoftirqd/221:39:362
692999562,52cyclictest19036-21kworker/1:223:35:491
6928995628,8cyclictest9-21ksoftirqd/023:50:000
6928995622,5cyclictest9-21ksoftirqd/019:54:170
6928995619,4cyclictest9-21ksoftirqd/000:00:280
134491560,4ptp4l0-21swapper/319:46:413
134491560,3ptp4l0-21swapper/021:47:150
6930995522,3cyclictest33-21ksoftirqd/222:15:182
6928995524,5cyclictest9-21ksoftirqd/000:38:550
6928995524,3cyclictest9-21ksoftirqd/021:57:220
6928995522,5cyclictest9-21ksoftirqd/023:39:260
134491550,4ptp4l0-21swapper/023:40:080
693099542,7cyclictest0-21swapper/220:35:202
693099542,12cyclictest33-21ksoftirqd/219:40:012
692899545,6cyclictest9-21ksoftirqd/019:20:000
6928995426,6cyclictest9-21ksoftirqd/023:21:250
6928995422,3cyclictest9-21ksoftirqd/022:03:400
134491540,3ptp4l0-21swapper/119:39:211
134491540,3ptp4l0-21swapper/000:32:070
134491540,11ptp4l5168-21iostat_ios19:05:190
693099535,3cyclictest28669-21grep21:05:152
6930995335,3cyclictest33-21ksoftirqd/200:30:212
6930995320,5cyclictest33-21ksoftirqd/223:15:262
692899535,10cyclictest9-21ksoftirqd/023:25:190
692899534,5cyclictest15978-21apt-get19:30:000
6928995327,3cyclictest9-21ksoftirqd/023:15:090
6928995325,5cyclictest9-21ksoftirqd/019:47:420
6928995322,2cyclictest9-21ksoftirqd/020:23:400
692899530,7cyclictest9-21ksoftirqd/021:00:170
134491530,4ptp4l0-21swapper/322:21:283
134491530,1ptp4l0-21swapper/100:14:221
134491530,13ptp4l5716-21ntp_states19:05:241
134491530,11ptp4l4905-21diskstats19:05:162
693099528,2cyclictest121rcu_preempt20:05:172
693099525,5cyclictest33-21ksoftirqd/221:40:192
6930995229,12cyclictest33-21ksoftirqd/223:30:002
6930995223,8cyclictest33-21ksoftirqd/222:00:212
6930995222,8cyclictest33-21ksoftirqd/200:00:022
6930995219,8cyclictest33-21ksoftirqd/220:42:082
6929995210,40cyclictest25-21ksoftirqd/119:31:481
692899526,4cyclictest9-21ksoftirqd/023:05:180
6928995226,2cyclictest9-21ksoftirqd/021:13:010
692899520,6cyclictest9-21ksoftirqd/023:10:160
134491520,4ptp4l0-21swapper/322:26:573
134491520,4ptp4l0-21swapper/322:08:273
134491520,4ptp4l0-21swapper/321:06:353
693099513,4cyclictest33-21ksoftirqd/219:35:012
693099512,6cyclictest33-21ksoftirqd/220:25:252
6930995121,10cyclictest33-21ksoftirqd/219:55:202
693099511,9cyclictest33-21ksoftirqd/200:15:182
692899516,7cyclictest16398-21sendmail-msp20:40:000
692899512,6cyclictest22682-21tr00:20:110
6928995124,5cyclictest9-21ksoftirqd/020:28:310
6928995124,3cyclictest9-21ksoftirqd/019:13:290
134491510,3ptp4l0-21swapper/300:02:453
693099504,9cyclictest33-21ksoftirqd/220:30:272
693099504,8cyclictest33-21ksoftirqd/219:45:272
693099504,6cyclictest0-21swapper/222:55:202
693099503,5cyclictest33-21ksoftirqd/200:40:002
6930995031,9cyclictest33-21ksoftirqd/223:00:272
693099502,6cyclictest0-21swapper/222:05:242
6930995016,7cyclictest33-21ksoftirqd/221:11:562
692899504,6cyclictest9-21ksoftirqd/021:55:000
692899501,6cyclictest9-21ksoftirqd/000:10:010
692899500,6cyclictest26850-21ls22:10:170
134491500,4ptp4l0-21swapper/322:19:353
134491500,4ptp4l0-21swapper/300:32:353
693099492,6cyclictest0-21swapper/200:25:282
693099490,5cyclictest33-21ksoftirqd/220:10:202
692899495,5cyclictest9-21ksoftirqd/021:30:000
692899495,3cyclictest9-21ksoftirqd/020:05:160
692899494,8cyclictest9-21ksoftirqd/022:30:200
692899494,8cyclictest9-21ksoftirqd/000:25:140
692899493,8cyclictest9-21ksoftirqd/021:40:170
6928994930,5cyclictest9-21ksoftirqd/021:30:240
6928994925,6cyclictest9-21ksoftirqd/000:11:290
692899490,6cyclictest9-21ksoftirqd/020:30:270
692899490,6cyclictest18224-21ntpq23:00:230
693099484,3cyclictest121rcu_preempt19:17:362
693099483,6cyclictest33-21ksoftirqd/221:25:262
693099483,3cyclictest33-21ksoftirqd/221:50:252
693099481,6cyclictest33-21ksoftirqd/222:40:012
692899484,5cyclictest9-21ksoftirqd/019:40:270
692899483,4cyclictest9-21ksoftirqd/020:40:590
6928994829,8cyclictest9-21ksoftirqd/020:00:140
692899482,6cyclictest9-21ksoftirqd/023:50:160
692899480,10cyclictest9-21ksoftirqd/023:55:250
134491480,4ptp4l0-21swapper/320:55:063
693099474,7cyclictest33-21ksoftirqd/220:15:202
693099474,3cyclictest33-21ksoftirqd/200:10:172
693099471,8cyclictest33-21ksoftirqd/222:10:212
693099470,6cyclictest33-21ksoftirqd/223:10:212
692899474,8cyclictest9-21ksoftirqd/022:05:270
692899474,6cyclictest9-21ksoftirqd/020:15:300
134491470,4ptp4l0-21swapper/320:20:003
134491470,3ptp4l31494-21apt-get00:39:593
693099465,2cyclictest33-21ksoftirqd/220:00:272
693099464,6cyclictest0-21swapper/220:20:152
6929994616,28cyclictest0-21swapper/123:10:591
692899461,5cyclictest9-21ksoftirqd/022:45:140
692899460,5cyclictest9-21ksoftirqd/020:54:440
134491450,9ptp4l4430-21apt-config19:05:003
134491450,9ptp4l0-21swapper/321:42:323
134491450,5ptp4l2318-21gnome-shell23:26:591
134491450,4ptp4l21580-21apt-get22:00:121
134491450,3ptp4l0-21swapper/322:40:283
134491450,3ptp4l0-21swapper/319:44:433
6929994413,29cyclictest29221-21kworker/1:219:10:581
134491440,4ptp4l16439-21apt-get19:30:123
134491440,4ptp4l0-21swapper/320:50:263
693099432,6cyclictest0-21swapper/223:22:222
692999430,41cyclictest87450irq/133-enp2s0-19:40:481
134491430,4ptp4l5553-21apt-get22:35:113
134491430,3ptp4l0-21swapper/122:32:571
134491420,4ptp4l32767-21apt-get20:05:131
134491420,4ptp4l31040-21iostat_ios20:00:181
134491420,4ptp4l28718-21iostat19:55:191
134491420,4ptp4l26773-21df23:20:151
134491420,4ptp4l24275-21iostat20:55:181
134491420,4ptp4l16969-21apt-get21:50:141
134491420,4ptp4l15629-21python20:35:231
134491420,4ptp4l0-21swapper/121:20:261
134491420,3ptp4l9788-21apt-get21:35:141
134491420,14ptp4l0-21swapper/123:40:411
134491410,5ptp4l19864-21/usr/sbin/munin23:05:161
134491410,5ptp4l0-21swapper/321:00:143
134491410,5ptp4l0-21swapper/300:28:343
134491410,5ptp4l0-21swapper/122:10:181
134491410,5ptp4l0-21swapper/119:15:221
134491410,4ptp4l7908-21iostat20:20:181
134491410,4ptp4l27325-21df00:30:131
134491410,4ptp4l20221-21memory21:55:221
134491410,4ptp4l19470-21iostat_ios20:45:191
134491410,4ptp4l18482-21sensors23:00:253
134491410,4ptp4l17719-21ntp_states20:40:231
134491410,4ptp4l16538-21ntp_states00:05:261
134491410,4ptp4l1634-21ntp_states21:15:261
134491410,4ptp4l11868-21ntp_states23:55:243
134491410,4ptp4l0-21swapper/323:41:593
134491410,4ptp4l0-21swapper/322:50:483
134491410,4ptp4l0-21swapper/320:31:033
134491410,4ptp4l0-21swapper/122:20:191
134491410,4ptp4l0-21swapper/121:45:161
134491410,4ptp4l0-21swapper/120:30:101
134491410,3ptp4l5576-21iostat20:15:181
134491410,3ptp4l22522-21apt-get00:20:111
134491400,5ptp4l24456-21df23:15:153
134491400,5ptp4l15547-21irqrtprio22:55:193
134491400,5ptp4l0-21swapper/322:30:173
134491400,5ptp4l0-21swapper/321:36:223
134491400,5ptp4l0-21swapper/119:50:121
134491400,4ptp4l25123-21df_inode00:25:161
134491400,4ptp4l11019-21irqstats22:45:181
134491400,4ptp4l0-21swapper/323:50:003
134491400,4ptp4l0-21swapper/323:38:053
134491400,4ptp4l0-21swapper/323:12:343
134491400,4ptp4l0-21swapper/322:48:473
134491400,4ptp4l0-21swapper/321:32:183
134491400,4ptp4l0-21swapper/321:19:423
134491400,4ptp4l0-21swapper/320:45:283
134491400,4ptp4l0-21swapper/319:58:403
134491400,4ptp4l0-21swapper/319:38:053
134491400,4ptp4l0-21swapper/319:27:563
134491400,4ptp4l0-21swapper/319:21:463
134491400,4ptp4l0-21swapper/319:11:313
134491400,4ptp4l0-21swapper/122:58:591
134491400,4ptp4l0-21swapper/122:15:151
134491400,4ptp4l0-21swapper/121:35:001
134491400,4ptp4l0-21swapper/121:05:211
134491400,4ptp4l0-21swapper/120:54:221
134491400,4ptp4l0-21swapper/120:25:031
134491400,4ptp4l0-21swapper/120:11:041
134491400,4ptp4l0-21swapper/119:25:071
134491400,3ptp4l8448-21iostat_ios22:40:171
134491400,3ptp4l21158-21memory00:15:201
134491400,3ptp4l11321-21iostat_ios23:55:191
134491400,3ptp4l0-21swapper/119:20:191
6929993910,28cyclictest0-21swapper/119:45:381
134491390,4ptp4l20189-21/usr/sbin/munin00:15:293
134491390,4ptp4l0-21swapper/323:30:283
134491390,4ptp4l0-21swapper/323:20:263
134491390,4ptp4l0-21swapper/322:11:583
134491390,4ptp4l0-21swapper/322:00:103
134491390,4ptp4l0-21swapper/321:45:123
134491390,4ptp4l0-21swapper/321:25:423
134491390,4ptp4l0-21swapper/321:10:103
134491390,4ptp4l0-21swapper/320:40:463
134491390,4ptp4l0-21swapper/320:35:423
134491390,4ptp4l0-21swapper/320:10:193
134491390,4ptp4l0-21swapper/319:52:033
134491390,4ptp4l0-21swapper/319:15:373
134491390,4ptp4l0-21swapper/122:50:091
134491390,4ptp4l0-21swapper/122:25:361
134491390,4ptp4l0-21swapper/122:05:121
134491390,4ptp4l0-21swapper/121:00:151
134491390,4ptp4l0-21swapper/100:35:111
134491390,4ptp4l0-21swapper/100:00:121
134491390,3ptp4l31364-21df23:30:141
134491390,3ptp4l0-21swapper/321:59:593
134491390,3ptp4l0-21swapper/321:20:253
134491390,3ptp4l0-21swapper/320:25:213
134491390,3ptp4l0-21swapper/121:40:251
134491380,4ptp4l0-21swapper/323:47:253
134491380,4ptp4l0-21swapper/323:25:073
134491380,4ptp4l0-21swapper/320:23:583
134491380,4ptp4l0-21swapper/320:04:133
134491380,4ptp4l0-21swapper/300:11:463
134491380,4ptp4l0-21swapper/300:05:543
134491380,4ptp4l0-21swapper/123:00:151
134491380,4ptp4l0-21swapper/121:10:121
134491380,3ptp4l24081-21apt-config23:15:011
134491380,3ptp4l0-21swapper/323:08:193
134491380,3ptp4l0-21swapper/300:21:103
134491380,3ptp4l0-21swapper/123:45:231
134491370,3ptp4l0-21swapper/321:51:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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