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2026-08-25 - 09:46
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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 Aug 25, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
364199782,33cyclictest0-21swapper/321:10:243
134491700,17ptp4l0-21swapper/120:48:091
3641996828,8cyclictest41-21ksoftirqd/319:12:293
3641996627,5cyclictest41-21ksoftirqd/322:15:013
181682660,5sleep318172-21irqrtprio19:40:193
134491660,5ptp4l0-21swapper/021:25:250
134491660,5ptp4l0-21swapper/021:25:250
3641996531,4cyclictest41-21ksoftirqd/320:30:003
3641996531,4cyclictest41-21ksoftirqd/320:30:003
3641996530,4cyclictest41-21ksoftirqd/319:35:003
3641996527,8cyclictest41-21ksoftirqd/321:29:593
3641996527,8cyclictest41-21ksoftirqd/321:29:593
3641996526,7cyclictest41-21ksoftirqd/321:31:373
134491650,5ptp4l0-21swapper/121:30:301
134491650,11ptp4l0-21swapper/219:35:002
3641996431,6cyclictest41-21ksoftirqd/323:35:313
3641996430,8cyclictest41-21ksoftirqd/321:00:003
3641996430,4cyclictest41-21ksoftirqd/300:35:243
3641996429,4cyclictest41-21ksoftirqd/323:00:173
3641996428,7cyclictest41-21ksoftirqd/321:40:143
3641996428,4cyclictest41-21ksoftirqd/320:50:283
3641996425,8cyclictest41-21ksoftirqd/323:32:383
134491640,4ptp4l0-21swapper/119:55:411
3641996329,7cyclictest41-21ksoftirqd/322:35:013
3641996329,6cyclictest41-21ksoftirqd/300:10:173
3641996327,8cyclictest41-21ksoftirqd/300:02:543
3641996327,7cyclictest41-21ksoftirqd/321:00:163
3641996233,8cyclictest41-21ksoftirqd/321:15:193
3641996229,8cyclictest41-21ksoftirqd/322:00:153
3641996228,3cyclictest41-21ksoftirqd/320:20:233
303662620,3sleep2364099cyclictest21:15:262
134491620,19ptp4l10736-21apt-get21:45:152
3641996132,8cyclictest41-21ksoftirqd/320:15:273
3641996129,8cyclictest41-21ksoftirqd/321:35:143
3641996127,8cyclictest41-21ksoftirqd/319:25:293
3641996127,7cyclictest41-21ksoftirqd/320:10:583
3641996031,8cyclictest41-21ksoftirqd/320:30:243
3641996029,9cyclictest41-21ksoftirqd/300:30:133
3641996029,8cyclictest41-21ksoftirqd/321:55:173
3641996022,9cyclictest41-21ksoftirqd/322:05:213
305922600,5sleep0111rcuc/021:15:280
134491600,4ptp4l0-21swapper/219:07:102
3641995928,3cyclictest41-21ksoftirqd/323:00:013
3641995922,7cyclictest41-21ksoftirqd/322:51:183
134491590,3ptp4l0-21swapper/200:27:042
3641995826,9cyclictest41-21ksoftirqd/319:35:153
3641995822,7cyclictest41-21ksoftirqd/300:20:173
3641995820,7cyclictest41-21ksoftirqd/322:18:043
134491570,4ptp4l0-21swapper/223:44:522
134491570,4ptp4l0-21swapper/100:21:091
364199563,27cyclictest0-21swapper/323:24:533
3641995629,8cyclictest41-21ksoftirqd/321:50:223
3641995625,3cyclictest41-21ksoftirqd/323:25:273
364199562,21cyclictest0-21swapper/323:07:463
3641995523,8cyclictest41-21ksoftirqd/321:05:133
3641995522,7cyclictest41-21ksoftirqd/323:19:343
364199552,26cyclictest0-21swapper/322:37:213
3641995521,7cyclictest41-21ksoftirqd/323:40:293
134491550,4ptp4l0-21swapper/322:45:133
134491550,4ptp4l0-21swapper/220:30:272
134491550,3ptp4l0-21swapper/221:20:372
3641995425,6cyclictest41-21ksoftirqd/319:15:263
3641995424,8cyclictest41-21ksoftirqd/320:00:173
3641995423,10cyclictest41-21ksoftirqd/300:05:173
3638995430,21cyclictest9-21ksoftirqd/020:05:120
134491540,3ptp4l0-21swapper/219:45:242
134491540,3ptp4l0-21swapper/000:21:090
134491540,12ptp4l0-21swapper/220:46:572
364199533,7cyclictest41-21ksoftirqd/323:50:013
3641995322,7cyclictest41-21ksoftirqd/320:44:083
134491530,4ptp4l0-21swapper/221:53:262
134491530,3ptp4l0-21swapper/200:15:002
3641995231,11cyclictest41-21ksoftirqd/319:25:013
364199522,7cyclictest0-21swapper/300:25:193
364199522,26cyclictest0-21swapper/323:55:023
134491520,9ptp4l0-21swapper/200:03:492
134491520,4ptp4l0-21swapper/121:24:111
134491520,4ptp4l0-21swapper/121:18:521
134491520,3ptp4l0-21swapper/121:59:411
134491520,18ptp4l25-21ksoftirqd/121:49:321
134491520,11ptp4l0-21swapper/222:55:242
364199515,3cyclictest121rcu_preempt22:40:523
364199514,3cyclictest121rcu_preempt20:05:263
364199512,7cyclictest41-21ksoftirqd/323:55:003
3641995126,8cyclictest41-21ksoftirqd/320:45:173
364199512,40cyclictest0-21swapper/323:10:153
3641995119,10cyclictest41-21ksoftirqd/319:55:463
134491510,4ptp4l0-21swapper/220:24:092
134491510,4ptp4l0-21swapper/023:24:460
134491510,12ptp4l0-21swapper/220:09:082
134491510,11ptp4l0-21swapper/200:30:302
364199502,25cyclictest0-21swapper/321:22:313
364199501,7cyclictest41-21ksoftirqd/321:45:163
134491500,4ptp4l0-21swapper/119:21:391
134491500,3ptp4l0-21swapper/200:17:272
364199493,7cyclictest41-21ksoftirqd/319:50:003
364199492,6cyclictest11156-21tune2fs20:35:173
134491490,4ptp4l0-21swapper/223:20:162
134491490,4ptp4l0-21swapper/222:10:192
134491490,4ptp4l0-21swapper/123:36:101
134491490,4ptp4l0-21swapper/123:01:451
134491490,4ptp4l0-21swapper/121:35:331
134491490,4ptp4l0-21swapper/119:15:021
134491490,4ptp4l0-21swapper/100:02:381
134491490,3ptp4l0-21swapper/220:19:102
134491490,2ptp4l0-21swapper/019:27:050
364199482,6cyclictest0-21swapper/322:20:273
3641994817,8cyclictest41-21ksoftirqd/300:19:073
134491480,4ptp4l0-21swapper/223:49:552
134491480,4ptp4l0-21swapper/220:54:362
134491480,4ptp4l0-21swapper/123:52:311
134491480,4ptp4l0-21swapper/122:00:031
134491480,4ptp4l0-21swapper/021:11:100
134491480,3ptp4l0-21swapper/222:52:502
134491480,3ptp4l0-21swapper/220:26:402
134491480,3ptp4l0-21swapper/220:26:402
134491480,3ptp4l0-21swapper/121:29:151
134491480,3ptp4l0-21swapper/121:29:151
364199474,2cyclictest41-21ksoftirqd/319:50:263
364199471,6cyclictest41-21ksoftirqd/322:25:233
134491470,5ptp4l0-21swapper/022:39:180
134491470,4ptp4l0-21swapper/121:00:111
134491470,4ptp4l0-21swapper/120:23:001
134491470,3ptp4l838-21apache222:24:202
134491470,3ptp4l0-21swapper/219:16:162
134491460,8ptp4l0-21swapper/021:43:020
134491460,4ptp4l0-21swapper/223:51:102
134491460,3ptp4l0-21swapper/223:15:382
134491460,3ptp4l0-21swapper/223:08:122
134491460,3ptp4l0-21swapper/221:58:452
134691450,4getstats0-21swapper/219:51:012
134491450,5ptp4l0-21swapper/221:25:232
134491450,5ptp4l0-21swapper/221:25:232
134491440,8ptp4l0-21swapper/020:30:040
134491440,4ptp4l4927-21ls22:40:180
134491440,4ptp4l27209-21apt-get23:30:112
134491440,4ptp4l0-21swapper/000:20:000
134491440,3ptp4l0-21swapper/122:26:051
134491440,3ptp4l0-21swapper/122:20:291
134491440,3ptp4l0-21swapper/119:38:441
134491430,9ptp4l0-21swapper/020:42:170
134491430,5ptp4l25-21ksoftirqd/122:50:191
134491430,5ptp4l0-21swapper/223:00:202
134491430,5ptp4l0-21swapper/020:00:140
134491430,4ptp4l0-21swapper/222:42:412
134491430,3ptp4l0-21swapper/022:22:380
134491430,10ptp4l0-21swapper/000:26:520
134491420,5ptp4l15679-21apt-get23:05:041
134491420,5ptp4l10742-21iostat00:10:200
134491420,5ptp4l0-21swapper/119:05:211
134491420,5ptp4l0-21swapper/022:00:290
134491420,5ptp4l0-21swapper/020:50:150
134491420,5ptp4l0-21swapper/020:10:190
134491420,5ptp4l0-21swapper/019:55:210
134491420,4ptp4l25709-21ntp_states21:05:221
134491420,3ptp4l0-21swapper/120:33:031
134491410,9ptp4l0-21swapper/021:48:450
134491410,9ptp4l0-21swapper/019:13:100
134491410,8ptp4l0-21swapper/220:57:312
134491410,5ptp4l0-21swapper/222:05:132
134491410,5ptp4l0-21swapper/219:40:212
134491410,5ptp4l0-21swapper/023:05:210
134491410,5ptp4l0-21swapper/023:00:170
134491410,5ptp4l0-21swapper/021:55:240
134491410,5ptp4l0-21swapper/019:15:190
134491410,4ptp4l7681-21apt-get00:05:142
134491410,4ptp4l6575-21hddtemp_smartct20:25:171
134491410,4ptp4l6575-21hddtemp_smartct20:25:171
134491410,4ptp4l4387-21iostat21:30:200
134491410,4ptp4l31956-21df_inode22:30:140
134491410,4ptp4l31507-21apt-get20:10:132
134491410,4ptp4l21249-21meminfo23:15:200
134491410,4ptp4l20302-21df_inode00:35:131
134491410,4ptp4l19057-21ls19:40:281
134491410,4ptp4l0-21swapper/022:05:180
134491410,4ptp4l0-21swapper/020:45:040
134491400,5ptp4l0-21swapper/223:35:332
134491400,5ptp4l0-21swapper/221:10:202
134491400,5ptp4l0-21swapper/122:15:191
134491400,5ptp4l0-21swapper/120:00:151
134491400,5ptp4l0-21swapper/022:45:080
134491400,5ptp4l0-21swapper/020:27:540
134491400,5ptp4l0-21swapper/020:27:540
134491400,5ptp4l0-21swapper/019:05:210
134491400,5ptp4l0-21swapper/000:00:290
134491400,4ptp4l4194-21df22:40:131
134491400,4ptp4l20549-21iostat_ios20:55:170
134491400,4ptp4l2042-21iostat_ios20:15:191
134491400,4ptp4l0-21swapper/223:11:322
134491400,4ptp4l0-21swapper/222:28:522
134491400,4ptp4l0-21swapper/222:00:252
134491400,4ptp4l0-21swapper/221:03:032
134491400,4ptp4l0-21swapper/219:35:192
134491400,4ptp4l0-21swapper/200:24:022
134491400,4ptp4l0-21swapper/122:10:131
134491400,4ptp4l0-21swapper/121:44:591
134491400,4ptp4l0-21swapper/100:17:141
134491400,4ptp4l0-21swapper/100:13:171
134491400,4ptp4l0-21swapper/023:35:330
134491400,4ptp4l0-21swapper/022:16:350
134491400,4ptp4l0-21swapper/021:50:430
134491400,4ptp4l0-21swapper/021:38:450
134491400,4ptp4l0-21swapper/021:00:240
134491400,4ptp4l0-21swapper/020:36:290
134491400,4ptp4l0-21swapper/020:16:280
134491400,4ptp4l0-21swapper/019:50:220
134491400,4ptp4l0-21swapper/019:43:350
134491400,4ptp4l0-21swapper/019:35:280
134491400,4ptp4l0-21swapper/000:30:150
134491400,4ptp4l0-21swapper/000:07:580
134491400,3ptp4l28328-21ntp_states23:30:230
134491400,3ptp4l22750-21diskstats22:10:140
134491400,3ptp4l10738-21apt-get20:35:132
134491390,5ptp4l27250-21grep21:10:151
134491390,5ptp4l0-21swapper/319:07:033
134491390,5ptp4l0-21swapper/219:14:382
134491390,5ptp4l0-21swapper/200:38:522
134491390,5ptp4l0-21swapper/120:55:141
134491390,5ptp4l0-21swapper/023:25:100
134491390,4ptp4l18550-21/usr/sbin/munin00:30:191
134491390,4ptp4l0-21swapper/222:30:282
134491390,4ptp4l0-21swapper/222:17:572
134491390,4ptp4l0-21swapper/221:40:272
134491390,4ptp4l0-21swapper/221:35:272
134491390,4ptp4l0-21swapper/221:30:212
134491390,4ptp4l0-21swapper/220:05:002
134491390,4ptp4l0-21swapper/219:28:282
134491390,4ptp4l0-21swapper/123:44:161
134491390,4ptp4l0-21swapper/122:46:561
134491390,4ptp4l0-21swapper/122:30:521
134491390,4ptp4l0-21swapper/120:10:061
134491390,4ptp4l0-21swapper/119:45:281
134491390,4ptp4l0-21swapper/100:06:471
134491390,4ptp4l0-21swapper/023:56:440
134491390,4ptp4l0-21swapper/023:40:120
134491390,4ptp4l0-21swapper/023:12:220
134491390,4ptp4l0-21swapper/022:55:130
134491390,4ptp4l0-21swapper/021:20:330
134491390,4ptp4l0-21swapper/020:20:320
134491390,4ptp4l0-21swapper/019:45:180
134491390,4ptp4l0-21swapper/019:20:350
134491390,4ptp4l0-21swapper/000:36:120
134491390,3ptp4l27638-21hddtemp_smartct23:30:161
134491390,3ptp4l14696-21/usr/sbin/munin21:50:271
134491390,3ptp4l0-21swapper/122:06:511
134491390,3ptp4l0-21swapper/120:05:251
134491390,3ptp4l0-21swapper/021:05:090
134491380,4ptp4l0-21swapper/223:57:032
134491380,4ptp4l0-21swapper/222:35:182
134491380,4ptp4l0-21swapper/221:08:182
134491380,4ptp4l0-21swapper/220:40:272
134491380,4ptp4l0-21swapper/219:20:332
134491380,4ptp4l0-21swapper/123:55:141
134491380,4ptp4l0-21swapper/123:46:471
134491380,4ptp4l0-21swapper/123:25:181
134491380,4ptp4l0-21swapper/123:15:191
134491380,4ptp4l0-21swapper/123:10:241
134491380,4ptp4l0-21swapper/122:35:171
134491380,4ptp4l0-21swapper/120:37:451
134491380,4ptp4l0-21swapper/119:31:481
134491380,4ptp4l0-21swapper/100:25:231
134491380,4ptp4l0-21swapper/023:47:490
134491380,4ptp4l0-21swapper/022:50:500
134491380,4ptp4l0-21swapper/022:25:220
134491380,4ptp4l0-21swapper/019:30:550
134491380,3ptp4l0-21swapper/223:25:432
134491380,3ptp4l0-21swapper/222:45:212
134491380,3ptp4l0-21swapper/219:55:462
134491380,3ptp4l0-21swapper/122:55:231
134491380,3ptp4l0-21swapper/120:50:201
134491380,3ptp4l0-21swapper/119:52:051
134491380,3ptp4l0-21swapper/023:53:370
134491380,2ptp4l4243-21iostat_ios19:10:181
134491370,4ptp4l0-21swapper/123:20:131
134491370,4ptp4l0-21swapper/119:25:211
134491360,4ptp4l0-21swapper/120:40:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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