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2026-05-20 - 03:31
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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 Wed May 20, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63692800,2sleep36370-21irqrtprio21:10:193
1477999803,75cyclictest0-21swapper/200:20:292
1477999801,77cyclictest0-21swapper/220:55:282
203782740,6sleep30-21swapper/321:40:203
1477999685,61cyclictest0-21swapper/221:25:282
1477999671,64cyclictest0-21swapper/219:50:282
134491640,4ptp4l0-21swapper/119:20:161
134491640,3ptp4l26998-21diskstats23:05:141
134491630,4ptp4l0-21swapper/123:35:141
14779996214,46cyclictest0-21swapper/222:03:492
14780996128,4cyclictest41-21ksoftirqd/321:20:013
14780996128,4cyclictest41-21ksoftirqd/321:20:013
134491610,5ptp4l0-21swapper/219:09:152
134491610,5ptp4l0-21swapper/122:45:201
134491610,4ptp4l0-21swapper/200:17:112
134491590,4ptp4l0-21swapper/319:49:093
134491590,4ptp4l0-21swapper/122:58:331
134491590,4ptp4l0-21swapper/120:07:011
134491590,4ptp4l0-21swapper/019:39:580
134491590,3ptp4l0-21swapper/022:06:000
134491580,4ptp4l0-21swapper/122:41:211
134491580,4ptp4l0-21swapper/119:45:571
134491580,3ptp4l0-21swapper/123:20:181
134491570,4ptp4l0-21swapper/221:48:262
134491570,4ptp4l0-21swapper/123:53:211
134491570,3ptp4l0-21swapper/123:40:161
134491570,3ptp4l0-21swapper/120:30:231
1477999563,51cyclictest0-21swapper/222:39:492
1477999562,52cyclictest0-21swapper/221:41:492
134491560,4ptp4l0-21swapper/320:57:193
134491560,4ptp4l0-21swapper/119:26:511
134491560,4ptp4l0-21swapper/100:28:361
134491560,3ptp4l0-21swapper/120:25:141
134491550,4ptp4l0-21swapper/023:11:460
14780995417,15cyclictest41-21ksoftirqd/319:50:293
134491540,3ptp4l10319-21apt-get21:20:132
134491540,3ptp4l0-21swapper/020:33:500
134491530,5ptp4l0-21swapper/319:09:413
134491530,4ptp4l0-21swapper/320:26:053
134491530,4ptp4l0-21swapper/119:59:111
134491530,4ptp4l0-21swapper/019:48:340
134491530,4ptp4l0-21swapper/019:17:250
134491530,3ptp4l0-21swapper/122:15:211
134491530,13ptp4l0-21swapper/100:32:261
14780995224,4cyclictest41-21ksoftirqd/300:17:083
134491520,4ptp4l0-21swapper/300:39:033
134491520,4ptp4l0-21swapper/122:36:061
134491520,4ptp4l0-21swapper/120:36:361
134491520,4ptp4l0-21swapper/119:42:381
134491520,3ptp4l0-21swapper/121:38:581
134491520,3ptp4l0-21swapper/121:21:431
134491520,3ptp4l0-21swapper/120:58:111
134491520,3ptp4l0-21swapper/023:03:550
134491520,11ptp4l0-21swapper/123:19:391
13212520,4sleep20-21swapper/222:10:152
134491510,4ptp4l0-21swapper/322:32:183
134491510,4ptp4l0-21swapper/123:59:481
134491510,4ptp4l0-21swapper/122:10:031
134491510,4ptp4l0-21swapper/122:00:491
134491510,4ptp4l0-21swapper/020:35:210
134491510,3ptp4l0-21swapper/122:29:481
134491510,3ptp4l0-21swapper/121:45:271
134491510,3ptp4l0-21swapper/119:30:171
134491510,3ptp4l0-21swapper/023:34:060
130642510,4sleep00-21swapper/019:05:190
14780995015,7cyclictest41-21ksoftirqd/321:35:143
14779995032,15cyclictest33-21ksoftirqd/200:05:002
14779995032,15cyclictest33-21ksoftirqd/200:05:002
134491500,4ptp4l15064-21apt-get23:50:122
134491500,4ptp4l0-21swapper/123:30:071
134491500,4ptp4l0-21swapper/122:20:311
134491500,4ptp4l0-21swapper/021:51:570
134491500,3ptp4l0-21swapper/221:12:302
134491500,3ptp4l0-21swapper/100:07:341
134491500,3ptp4l0-21swapper/020:49:440
14780994919,4cyclictest41-21ksoftirqd/322:00:313
134491490,9ptp4l0-21swapper/119:05:141
134491490,9ptp4l0-21swapper/100:35:131
134491490,4ptp4l0-21swapper/021:46:400
134491490,3ptp4l0-21swapper/121:12:511
134491490,3ptp4l0-21swapper/120:46:591
134491490,3ptp4l0-21swapper/022:23:130
1478099488,9cyclictest41-21ksoftirqd/321:25:233
14780994818,6cyclictest41-21ksoftirqd/319:10:313
14777994843,3cyclictest9-21ksoftirqd/023:40:000
134491480,4ptp4l0-21swapper/120:01:041
134491480,4ptp4l0-21swapper/022:58:580
134491480,4ptp4l0-21swapper/021:28:230
134491480,3ptp4l0-21swapper/119:13:321
134491480,3ptp4l0-21swapper/100:21:551
1478099473,3cyclictest0-21swapper/300:10:153
14780994716,3cyclictest41-21ksoftirqd/321:55:013
14780994714,4cyclictest41-21ksoftirqd/323:40:203
134491470,3ptp4l0-21swapper/020:55:240
1478099469,5cyclictest41-21ksoftirqd/321:55:263
14780994616,4cyclictest41-21ksoftirqd/323:20:153
14780994614,3cyclictest41-21ksoftirqd/321:00:143
14780994614,3cyclictest41-21ksoftirqd/320:45:263
14780994612,7cyclictest41-21ksoftirqd/300:05:303
14780994611,8cyclictest41-21ksoftirqd/320:35:013
134491460,3ptp4l0-21swapper/123:10:291
1478099459,8cyclictest41-21ksoftirqd/320:20:263
14780994517,2cyclictest41-21ksoftirqd/322:05:273
14780994513,7cyclictest41-21ksoftirqd/320:40:253
14780994510,8cyclictest41-21ksoftirqd/320:05:233
14777994528,5cyclictest9-21ksoftirqd/020:30:000
134491450,9ptp4l0-21swapper/221:02:212
134491450,5ptp4l18445-21ls22:45:202
134491450,5ptp4l0-21swapper/321:20:133
134491450,4ptp4l8000-21apt-get21:15:142
134491450,4ptp4l8000-21apt-get21:15:142
134491450,4ptp4l0-21swapper/100:11:301
134491450,4ptp4l0-21swapper/023:54:380
134491450,4ptp4l0-21swapper/023:45:350
134491450,3ptp4l14762-21apt-get20:20:112
134491450,3ptp4l0-21swapper/200:39:002
134491450,3ptp4l0-21swapper/120:52:181
134491450,3ptp4l0-21swapper/100:15:221
134491450,3ptp4l0-21swapper/022:51:470
1478099442,2cyclictest121rcu_preempt00:25:163
14780994416,6cyclictest41-21ksoftirqd/322:45:183
14780994416,6cyclictest41-21ksoftirqd/319:35:203
14780994414,3cyclictest41-21ksoftirqd/320:10:163
14780994413,6cyclictest41-21ksoftirqd/321:45:193
14780994412,8cyclictest41-21ksoftirqd/323:50:163
14780994410,3cyclictest41-21ksoftirqd/323:45:183
134491440,9ptp4l0-21swapper/223:08:562
134491440,9ptp4l0-21swapper/221:34:352
134491440,9ptp4l0-21swapper/220:07:202
134491440,5ptp4l0-21swapper/219:55:122
134491440,4ptp4l0-21swapper/121:59:391
134491440,4ptp4l0-21swapper/022:17:500
134491440,4ptp4l0-21swapper/021:06:180
134491440,10ptp4l0-21swapper/321:33:073
1478099438,8cyclictest41-21ksoftirqd/321:05:293
14780994338,3cyclictest41-21ksoftirqd/322:40:013
14780994336,4cyclictest19418-21cron00:00:003
14780994313,6cyclictest41-21ksoftirqd/323:10:003
134491430,9ptp4l0-21swapper/223:42:392
134491430,9ptp4l0-21swapper/222:53:532
134491430,9ptp4l0-21swapper/222:44:152
134491430,9ptp4l0-21swapper/222:28:522
134491430,9ptp4l0-21swapper/200:09:362
134491430,8ptp4l0-21swapper/223:23:292
134491430,8ptp4l0-21swapper/222:33:542
134491430,8ptp4l0-21swapper/220:46:232
134491430,5ptp4l0-21swapper/322:10:133
134491430,4ptp4l29636-21irqstats22:00:210
134491430,4ptp4l17216-21apt-get21:35:120
134491430,4ptp4l0-21swapper/022:34:460
134491430,4ptp4l0-21swapper/020:07:430
134491430,3ptp4l0-21swapper/119:15:011
134491430,3ptp4l0-21swapper/019:10:330
1478099428,3cyclictest41-21ksoftirqd/319:15:253
1478099427,8cyclictest41-21ksoftirqd/320:35:163
1478099426,8cyclictest41-21ksoftirqd/319:20:143
14780994236,3cyclictest41-21ksoftirqd/300:25:003
14780994210,4cyclictest41-21ksoftirqd/320:50:253
134491420,9ptp4l0-21swapper/222:56:472
134491420,9ptp4l0-21swapper/220:27:192
134491420,8ptp4l0-21swapper/223:33:382
134491420,8ptp4l0-21swapper/221:51:392
134491420,8ptp4l0-21swapper/219:18:392
134491420,6ptp4l0-21swapper/000:10:180
134491420,5ptp4l0-21swapper/123:26:131
134491420,5ptp4l0-21swapper/121:40:291
134491420,5ptp4l0-21swapper/021:55:130
134491420,5ptp4l0-21swapper/020:10:200
134491420,4ptp4l9117-21ntp_states21:15:261
134491420,4ptp4l9117-21ntp_states21:15:261
134491420,4ptp4l4521-21ntp_states21:05:231
134491420,4ptp4l13063-21df_inode23:45:151
134491420,4ptp4l0-21swapper/120:23:071
134491420,4ptp4l0-21swapper/021:30:120
1478099418,8cyclictest41-21ksoftirqd/319:25:163
14780994114,3cyclictest41-21ksoftirqd/322:50:203
14780994113,7cyclictest41-21ksoftirqd/322:25:143
14780994113,6cyclictest41-21ksoftirqd/322:55:133
1477999411,39cyclictest0-21swapper/223:25:292
14779994111,28cyclictest0-21swapper/220:16:582
134491410,9ptp4l0-21swapper/219:42:522
134491410,5ptp4l0-21swapper/000:28:040
134491410,4ptp4l8306-21diskstats21:15:170
134491410,4ptp4l8306-21diskstats21:15:170
134491410,4ptp4l27479-21ntp_states19:35:241
134491410,4ptp4l27332-21iostat_ios00:15:160
134491410,4ptp4l2160-21meminfo23:20:200
134491410,4ptp4l13756-21meminfo22:35:200
134491410,4ptp4l12744-21df_inode20:15:140
134491410,4ptp4l0-21swapper/223:35:382
134491410,4ptp4l0-21swapper/221:58:382
134491410,4ptp4l0-21swapper/220:36:552
134491410,4ptp4l0-21swapper/121:51:031
134491410,4ptp4l0-21swapper/022:13:360
134491410,4ptp4l0-21swapper/021:10:200
134491410,4ptp4l0-21swapper/020:24:550
134491410,3ptp4l32233-21meminfo23:15:220
134491410,3ptp4l28988-21diskstats19:40:140
134491410,3ptp4l2004-21ntp_states19:50:241
134491410,3ptp4l18272-21irqstats22:45:180
134491410,11ptp4l9-21ksoftirqd/023:41:450
1478099407,4cyclictest41-21ksoftirqd/323:30:193
14780994036,2cyclictest41-21ksoftirqd/322:20:233
14780994011,7cyclictest41-21ksoftirqd/323:10:193
1477999401,4cyclictest134691getstats23:55:102
134491400,5ptp4l0-21swapper/021:00:180
134491400,5ptp4l0-21swapper/019:30:170
134491400,4ptp4l3217-21/usr/sbin/munin19:55:163
134491400,4ptp4l0-21swapper/323:15:313
134491400,4ptp4l0-21swapper/222:15:362
134491400,4ptp4l0-21swapper/222:08:142
134491400,4ptp4l0-21swapper/221:37:082
134491400,4ptp4l0-21swapper/220:50:592
134491400,4ptp4l0-21swapper/220:44:162
134491400,4ptp4l0-21swapper/220:34:502
134491400,4ptp4l0-21swapper/219:27:102
134491400,4ptp4l0-21swapper/219:23:102
134491400,4ptp4l0-21swapper/219:10:142
134491400,4ptp4l0-21swapper/121:32:291
134491400,4ptp4l0-21swapper/121:00:141
134491400,4ptp4l0-21swapper/120:15:391
134491400,4ptp4l0-21swapper/120:10:221
134491400,4ptp4l0-21swapper/022:25:130
134491400,4ptp4l0-21swapper/021:42:280
134491400,4ptp4l0-21swapper/020:52:420
134491400,4ptp4l0-21swapper/020:41:300
134491400,4ptp4l0-21swapper/019:50:150
134491400,4ptp4l0-21swapper/000:30:150
134491400,4ptp4l0-21swapper/000:20:230
134491400,4ptp4l0-21swapper/000:00:380
134491400,4ptp4l0-21swapper/000:00:380
134491400,3ptp4l31398-21diskstats22:05:171
134491400,3ptp4l21719-21apt-get19:25:110
1478099394,8cyclictest41-21ksoftirqd/323:25:283
14780993934,3cyclictest41-21ksoftirqd/322:16:023
14780993933,4cyclictest41-21ksoftirqd/300:30:123
1478099392,2cyclictest121rcu_preempt00:00:173
1478099392,2cyclictest121rcu_preempt00:00:173
1478099391,3cyclictest121rcu_preempt23:40:003
14778993933,4cyclictest25-21ksoftirqd/123:00:151
134491390,4ptp4l0-21swapper/320:15:273
134491390,4ptp4l0-21swapper/223:46:122
134491390,4ptp4l0-21swapper/223:16:082
134491390,4ptp4l0-21swapper/223:00:282
134491390,4ptp4l0-21swapper/222:21:492
134491390,4ptp4l0-21swapper/221:07:252
134491390,4ptp4l0-21swapper/220:10:162
134491390,4ptp4l0-21swapper/220:01:132
134491390,4ptp4l0-21swapper/219:48:262
134491390,4ptp4l0-21swapper/219:35:272
134491390,4ptp4l0-21swapper/200:31:042
134491390,4ptp4l0-21swapper/200:25:282
134491390,4ptp4l0-21swapper/200:10:142
134491390,4ptp4l0-21swapper/122:50:231
134491390,4ptp4l0-21swapper/122:30:151
134491390,4ptp4l0-21swapper/121:25:071
134491390,4ptp4l0-21swapper/120:43:151
134491390,4ptp4l0-21swapper/023:06:290
134491390,4ptp4l0-21swapper/022:40:360
134491390,4ptp4l0-21swapper/021:22:400
134491390,4ptp4l0-21swapper/020:00:210
134491390,4ptp4l0-21swapper/019:55:100
134491390,4ptp4l0-21swapper/000:05:210
134491390,3ptp4l3859-21df_inode23:25:140
134491390,3ptp4l17777-21perl23:55:130
134491390,3ptp4l0-21swapper/223:10:502
134491390,3ptp4l0-21swapper/100:00:061
134491390,3ptp4l0-21swapper/100:00:061
134491390,3ptp4l0-21swapper/019:20:270
14779993832,3cyclictest33-21ksoftirqd/219:30:272
134491380,4ptp4l0-21swapper/000:35:120
134491380,3ptp4l0-21swapper/319:40:193
14780993732,3cyclictest41-21ksoftirqd/319:32:323
14780993729,5cyclictest41-21ksoftirqd/322:40:273
134491370,4ptp4l0-21swapper/320:04:593
134491370,3ptp4l0-21swapper/323:04:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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