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2026-04-11 - 14:57
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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 Sat Apr 11, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1794099630,61cyclictest0-21swapper/321:00:483
1793799638,51cyclictest5359-21awk21:00:220
17937996314,11cyclictest15395-21seq20:12:540
17937996216,9cyclictest7941-21python19:55:240
17937996115,10cyclictest25009-21taskset00:01:510
1793799606,17cyclictest0-21swapper/000:30:150
134491600,3ptp4l0-21swapper/219:55:182
265732590,6sleep21793999cyclictest00:05:202
1793899597,6cyclictest0-21swapper/121:10:241
134491580,4ptp4l0-21swapper/221:10:162
134491580,4ptp4l0-21swapper/023:50:210
1793899577,6cyclictest0-21swapper/122:20:161
1793899575,17cyclictest6152-21chrt19:52:301
1793899574,15cyclictest22394-21chrt21:37:091
1793899573,16cyclictest8527-21chrt19:58:321
17937995710,17cyclictest0-21swapper/023:59:250
17937995710,17cyclictest0-21swapper/023:30:040
134491570,4ptp4l0-21swapper/323:59:203
134491570,4ptp4l0-21swapper/222:20:332
1794099568,6cyclictest0-21swapper/319:35:293
1794099565,6cyclictest0-21swapper/321:15:263
1793899567,7cyclictest0-21swapper/121:30:191
17937995610,18cyclictest0-21swapper/020:53:350
134491560,4ptp4l1317-21runrttasks20:35:082
134491560,4ptp4l0-21swapper/220:33:582
134491560,3ptp4l0-21swapper/221:40:242
134491560,21ptp4l0-21swapper/219:30:292
134491560,21ptp4l0-21swapper/219:30:292
134491560,13ptp4l0-21swapper/222:55:152
1794099556,6cyclictest0-21swapper/319:20:243
1794099555,6cyclictest0-21swapper/323:20:173
1793899558,5cyclictest0-21swapper/120:50:231
17937995515,16cyclictest25745-21seq21:45:170
17937995513,9cyclictest28646-21/usr/sbin/munin21:50:220
17937995511,18cyclictest0-21swapper/019:27:500
17937995510,17cyclictest0-21swapper/020:49:580
17937995510,17cyclictest0-21swapper/019:32:030
17937995510,17cyclictest0-21swapper/019:32:030
17937995510,16cyclictest0-21swapper/023:04:160
134491550,4ptp4l0-21swapper/223:34:152
134491550,3ptp4l0-21swapper/223:22:532
134491550,3ptp4l0-21swapper/220:10:232
134491550,3ptp4l0-21swapper/219:45:272
134491550,13ptp4l16716-21ntp_states19:05:211
134491550,12ptp4l0-21swapper/220:50:142
134491550,11ptp4l0-21swapper/221:05:212
1794099545,6cyclictest0-21swapper/322:40:253
1794099545,6cyclictest0-21swapper/321:45:233
1794099544,5cyclictest0-21swapper/322:15:253
17937995410,17cyclictest0-21swapper/022:47:160
17937995410,17cyclictest0-21swapper/020:38:310
134491540,4ptp4l0-21swapper/220:17:162
134491540,4ptp4l0-21swapper/219:11:002
1794099535,6cyclictest0-21swapper/322:10:153
1794099535,10cyclictest0-21swapper/320:02:413
1794099534,6cyclictest0-21swapper/319:45:193
1794099534,13cyclictest0-21swapper/321:30:163
1793899537,11cyclictest0-21swapper/100:25:271
1793799536,16cyclictest0-21swapper/022:59:240
17937995314,8cyclictest19257-21ntp_states20:20:230
1794099524,6cyclictest0-21swapper/320:05:113
1794099524,6cyclictest0-21swapper/320:05:113
1794099523,6cyclictest5250-21cat00:30:113
1794099522,6cyclictest0-21swapper/322:50:103
1793799528,10cyclictest0-21swapper/022:05:000
17937995211,16cyclictest1865-21taskset23:11:080
134491520,4ptp4l0-21swapper/222:52:492
1794099514,11cyclictest0-21swapper/300:15:203
1793899518,7cyclictest0-21swapper/122:50:191
134491510,3ptp4l0-21swapper/221:27:362
134491510,11ptp4l0-21swapper/319:05:143
1794099502,6cyclictest0-21swapper/320:52:393
1793899507,6cyclictest0-21swapper/121:15:171
1793899507,6cyclictest0-21swapper/119:25:191
1793899506,5cyclictest0-21swapper/120:55:221
1793899505,7cyclictest0-21swapper/123:40:261
1793899505,16cyclictest3704-21chrt19:45:361
1793799500,10cyclictest0-21swapper/019:10:240
134491500,4ptp4l0-21swapper/322:28:143
134491500,3ptp4l0-21swapper/221:21:502
1794099495,6cyclictest0-21swapper/321:20:253
17940994932,5cyclictest41-21ksoftirqd/323:00:003
1794099492,7cyclictest0-21swapper/319:15:273
1794099492,10cyclictest0-21swapper/300:10:243
1793899496,6cyclictest0-21swapper/123:05:131
1793899496,6cyclictest0-21swapper/119:20:121
1793899495,7cyclictest0-21swapper/123:20:191
1793899494,11cyclictest2306-21chrt00:21:521
1793899494,11cyclictest2306-21chrt00:21:521
1793899493,6cyclictest0-21swapper/121:25:151
1793899492,10cyclictest1317-21runrttasks23:29:531
1793799498,39cyclictest0-21swapper/021:35:140
17937994912,34cyclictest6989-21/usr/sbin/munin21:05:150
134491490,4ptp4l0-21swapper/222:07:402
134491490,4ptp4l0-21swapper/220:56:132
134491490,4ptp4l0-21swapper/220:41:282
134491490,4ptp4l0-21swapper/219:20:312
134491490,4ptp4l0-21swapper/200:34:492
134491490,3ptp4l0-21swapper/219:16:092
1794099484,10cyclictest0-21swapper/320:15:213
1794099480,5cyclictest41-21ksoftirqd/321:37:543
1793899487,6cyclictest0-21swapper/100:10:271
1793899486,6cyclictest0-21swapper/122:05:151
1793899484,11cyclictest31696-21chrt21:57:351
1793899480,5cyclictest0-21swapper/123:12:111
134491480,4ptp4l1793799cyclictest00:06:280
134491480,4ptp4l0-21swapper/222:13:072
134491480,4ptp4l0-21swapper/221:04:052
134491480,4ptp4l0-21swapper/220:23:092
134491480,4ptp4l0-21swapper/220:07:042
134491480,4ptp4l0-21swapper/220:07:042
134491480,3ptp4l1793799cyclictest00:35:020
1794099479,12cyclictest0-21swapper/320:20:173
1794099475,6cyclictest0-21swapper/319:40:143
1794099473,6cyclictest41-21ksoftirqd/319:50:273
1794099472,6cyclictest41-21ksoftirqd/321:55:213
1794099472,6cyclictest0-21swapper/321:25:183
1794099472,10cyclictest0-21swapper/320:45:393
1794099470,6cyclictest41-21ksoftirqd/323:31:023
1794099470,6cyclictest41-21ksoftirqd/321:51:023
1794099470,5cyclictest41-21ksoftirqd/322:36:503
1793899477,6cyclictest0-21swapper/121:40:261
1793899475,40cyclictest13234-21kworker/1:220:25:481
1793899472,6cyclictest0-21swapper/120:19:201
134491470,9ptp4l0-21swapper/221:55:402
134491470,5ptp4l0-21swapper/019:05:130
134491470,4ptp4l0-21swapper/219:35:232
134491470,3ptp4l0-21swapper/223:54:192
134491470,3ptp4l0-21swapper/221:50:162
1794099465,6cyclictest0-21swapper/322:30:173
1794099465,10cyclictest0-21swapper/322:03:243
1794099464,6cyclictest0-21swapper/323:00:243
1794099463,6cyclictest41-21ksoftirqd/300:20:203
1794099463,6cyclictest41-21ksoftirqd/300:20:203
1794099461,5cyclictest41-21ksoftirqd/322:48:423
1794099460,5cyclictest41-21ksoftirqd/323:13:023
1793799468,14cyclictest23741-21irqstats21:40:180
134491460,3ptp4l0-21swapper/222:48:222
134491460,2ptp4l0-21swapper/221:30:262
134491460,13ptp4l0-21swapper/219:09:432
134491460,11ptp4l0-21swapper/222:35:332
1794099453,11cyclictest0-21swapper/322:20:473
1793899456,6cyclictest0-21swapper/120:45:201
1793799458,33cyclictest28898-21timerwakeupswit20:40:270
1793799457,14cyclictest10207-21systemd-cgroups20:00:240
17937994518,24cyclictest16084-21df_abs20:15:140
134491450,9ptp4l0-21swapper/022:41:230
134491450,9ptp4l0-21swapper/021:55:360
134491450,5ptp4l0-21swapper/023:45:270
134491450,5ptp4l0-21swapper/021:25:030
134491450,4ptp4l0-21swapper/223:12:022
134491450,3ptp4l0-21swapper/221:35:182
134491450,3ptp4l0-21swapper/200:10:102
134491450,3ptp4l0-21swapper/122:32:131
1794099443,6cyclictest41-21ksoftirqd/322:05:253
1794099442,6cyclictest0-21swapper/323:25:293
1794099440,5cyclictest41-21ksoftirqd/319:59:053
1794099440,5cyclictest19507-21latency23:50:183
1793899447,6cyclictest0-21swapper/120:10:151
1793899446,6cyclictest0-21swapper/122:43:421
1793899445,5cyclictest0-21swapper/122:26:161
17937994418,15cyclictest13091-21seq20:07:490
17937994418,15cyclictest13091-21seq20:07:490
17937994417,16cyclictest22250-21taskset19:19:140
17937994411,14cyclictest23841-21rt-features19:20:230
134491440,9ptp4l0-21swapper/319:14:043
134491440,9ptp4l0-21swapper/000:21:150
134491440,9ptp4l0-21swapper/000:21:150
134491440,6ptp4l1870-21/usr/sbin/munin20:55:143
134491440,4ptp4l9243-21apt-get22:20:120
134491440,4ptp4l2474-21apt-get23:15:123
134491440,4ptp4l0-21swapper/223:01:092
134491440,3ptp4l0-21swapper/200:24:582
134491440,3ptp4l0-21swapper/200:24:582
134491440,3ptp4l0-21swapper/100:16:261
1794099438,6cyclictest0-21swapper/320:25:153
1794099433,11cyclictest0-21swapper/300:35:203
1794099432,6cyclictest0-21swapper/323:40:163
1794099432,6cyclictest0-21swapper/320:10:233
1794099432,5cyclictest0-21swapper/323:35:243
1794099432,12cyclictest0-21swapper/321:40:223
1794099431,5cyclictest0-21swapper/321:10:153
1793899434,6cyclictest7680-21ntpq21:05:231
17937994317,16cyclictest15475-21seq21:24:310
17937994317,15cyclictest31745-21taskset23:06:050
17937994317,15cyclictest31378-21seq19:37:330
17937994316,18cyclictest2360-21/usr/sbin/munin20:55:160
17937994313,19cyclictest32374-21df22:00:140
17937994311,11cyclictest7441-21cat22:15:190
134491430,9ptp4l0-21swapper/223:37:092
134491430,9ptp4l0-21swapper/022:36:110
134491430,9ptp4l0-21swapper/020:32:090
134491430,5ptp4l0-21swapper/223:15:102
134491430,5ptp4l0-21swapper/023:40:220
134491430,4ptp4l8853-21apt-get21:10:110
134491430,4ptp4l24639-21ls00:00:272
134491430,4ptp4l0-21swapper/223:29:072
134491430,4ptp4l0-21swapper/219:53:062
134491430,4ptp4l0-21swapper/219:27:552
1794099425,12cyclictest0-21swapper/320:30:153
1794099423,6cyclictest0-21swapper/323:05:183
1794099422,6cyclictest0-21swapper/323:45:193
1794099422,5cyclictest41-21ksoftirqd/300:10:013
1793899427,6cyclictest0-21swapper/119:31:311
1793899427,6cyclictest0-21swapper/119:31:311
1793899421,6cyclictest0-21swapper/122:35:361
17937994217,15cyclictest30103-21seq00:12:200
17937994217,15cyclictest20238-21seq21:33:500
17937994217,15cyclictest15718-21taskset22:32:550
134491420,9ptp4l0-21swapper/000:26:030
134491420,8ptp4l0-21swapper/223:48:052
134491420,5ptp4l3049-21iostat_ios23:15:171
134491420,5ptp4l26312-21ssh19:25:263
134491420,5ptp4l0-21swapper/320:40:163
134491420,5ptp4l0-21swapper/319:30:093
134491420,5ptp4l0-21swapper/319:30:093
134491420,5ptp4l0-21swapper/022:50:180
134491420,4ptp4l22424-21users22:45:291
134491420,4ptp4l0-21swapper/222:31:572
134491420,4ptp4l0-21swapper/220:04:332
134491420,3ptp4l0-21swapper/222:40:012
1794099412,6cyclictest0-21swapper/320:35:213
1793999417,31cyclictest31966-21dpkg19:40:002
134491410,5ptp4l6458-21/usr/sbin/munin23:20:260
134491410,5ptp4l5147-21irqstats19:50:180
134491410,5ptp4l2172-21df19:45:140
134491410,5ptp4l21473-21ps23:55:172
134491410,5ptp4l0-21swapper/321:05:153
134491410,5ptp4l0-21swapper/120:40:221
134491410,5ptp4l0-21swapper/119:40:161
134491410,5ptp4l0-21swapper/022:27:580
134491410,4ptp4l3958-21ntp_states00:25:233
134491410,4ptp4l17256-21memory23:45:211
134491410,4ptp4l13357-21users23:35:270
134491410,4ptp4l0-21swapper/222:02:562
134491410,4ptp4l0-21swapper/220:25:142
134491410,4ptp4l0-21swapper/200:18:452
134491410,4ptp4l0-21swapper/122:55:191
134491410,4ptp4l0-21swapper/023:15:150
134491410,3ptp4l32057-21apt-get19:40:130
1793899404,6cyclictest0-21swapper/120:05:131
1793899404,6cyclictest0-21swapper/120:05:131
1793899401,17cyclictest27719-21dpkg23:00:111
17937994015,16cyclictest5776-21/usr/sbin/munin22:10:220
134491400,5ptp4l0-21swapper/023:25:230
134491400,4ptp4l8780-21python00:35:251
134491400,4ptp4l0-21swapper/200:25:292
134491400,4ptp4l0-21swapper/121:22:071
134491400,4ptp4l0-21swapper/121:00:141
134491400,4ptp4l0-21swapper/020:25:110
134491400,4ptp4l0-21swapper/000:16:090
134491400,3ptp4l23523-21df_inode00:00:153
134491400,3ptp4l18605-21apt-get23:50:111
134491400,3ptp4l12719-21ls21:15:262
134491400,3ptp4l11454-21df_inode21:15:140
1793899393,8cyclictest25-21ksoftirqd/123:58:241
1793899393,10cyclictest19823-21seq19:12:361
1793899392,8cyclictest25-21ksoftirqd/123:37:271
17938993912,5cyclictest25-21ksoftirqd/100:05:291
134491390,5ptp4l19018-21cat20:20:181
134491390,5ptp4l0-21swapper/220:45:022
134491390,4ptp4l0-21swapper/223:41:232
134491390,4ptp4l0-21swapper/223:06:342
134491390,4ptp4l0-21swapper/222:25:122
134491390,4ptp4l0-21swapper/222:15:072
134491390,4ptp4l0-21swapper/221:45:122
134491390,4ptp4l0-21swapper/200:35:402
134491390,4ptp4l0-21swapper/123:30:181
134491390,4ptp4l0-21swapper/122:10:161
134491380,4ptp4l0-21swapper/122:18:481
134491380,4ptp4l0-21swapper/121:54:381
134491380,4ptp4l0-21swapper/119:39:281
134491380,4ptp4l0-21swapper/119:17:341
134491380,4ptp4l0-21swapper/100:30:151
134491380,3ptp4l10035-21ntp_states20:00:231
134491380,3ptp4l0-21swapper/120:35:021
134491380,3ptp4l0-21swapper/120:30:401
134491380,3ptp4l0-21swapper/100:00:241
1793899371,13cyclictest0-21swapper/121:45:421
134491370,3ptp4l0-21swapper/122:01:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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