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2026-11-15 - 04:03
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sun Nov 15, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20912997713,62cyclictest656-21kworker/1:022:43:501
263382660,3sleep126337-21cpuspeed00:00:151
20913996629,3cyclictest33-21ksoftirqd/219:59:592
20913995929,3cyclictest33-21ksoftirqd/220:10:212
134491590,4ptp4l0-21swapper/220:49:572
20913995825,5cyclictest33-21ksoftirqd/220:35:222
20913995825,5cyclictest33-21ksoftirqd/220:35:222
134491580,9ptp4l0-21swapper/219:39:192
134491580,4ptp4l0-21swapper/221:54:102
134491580,4ptp4l0-21swapper/119:16:591
134491580,3ptp4l0-21swapper/222:55:122
20913995724,4cyclictest33-21ksoftirqd/222:05:252
2091299575,50cyclictest656-21kworker/1:023:16:501
134491570,4ptp4l0-21swapper/223:27:232
134491570,4ptp4l0-21swapper/222:01:082
134491570,3ptp4l4178-21ls23:10:210
20913995624,5cyclictest33-21ksoftirqd/200:15:222
2091299562,52cyclictest0-21swapper/123:21:291
134491560,3ptp4l0-21swapper/223:34:522
134491560,3ptp4l0-21swapper/120:20:421
20913995525,3cyclictest33-21ksoftirqd/223:13:282
20913995523,6cyclictest33-21ksoftirqd/222:24:302
20913995523,3cyclictest33-21ksoftirqd/221:11:212
20913995521,8cyclictest33-21ksoftirqd/222:12:042
20913995521,4cyclictest33-21ksoftirqd/222:47:022
20913995519,6cyclictest33-21ksoftirqd/221:29:592
134491550,5ptp4l0-21swapper/021:55:230
134491550,4ptp4l0-21swapper/323:29:453
134491550,4ptp4l0-21swapper/021:20:130
134491550,3ptp4l0-21swapper/219:50:162
134491550,3ptp4l0-21swapper/122:30:281
20913995426,7cyclictest33-21ksoftirqd/220:50:252
20913995423,6cyclictest33-21ksoftirqd/220:30:152
20913995420,5cyclictest33-21ksoftirqd/221:00:192
134491540,3ptp4l0-21swapper/120:54:351
134491540,3ptp4l0-21swapper/000:06:040
20913995323,3cyclictest33-21ksoftirqd/220:15:272
20913995322,4cyclictest33-21ksoftirqd/221:35:312
20913995322,4cyclictest33-21ksoftirqd/200:05:152
20913995321,5cyclictest33-21ksoftirqd/220:55:202
20913995320,5cyclictest33-21ksoftirqd/219:30:192
20913995319,4cyclictest33-21ksoftirqd/200:36:402
134491530,9ptp4l0-21swapper/221:59:282
134491530,4ptp4l0-21swapper/019:54:250
134491530,4ptp4l0-21swapper/019:44:590
134491530,3ptp4l0-21swapper/223:52:072
134491530,3ptp4l0-21swapper/019:35:140
20913995232,10cyclictest33-21ksoftirqd/219:20:242
20913995224,4cyclictest33-21ksoftirqd/200:02:312
20913995222,4cyclictest33-21ksoftirqd/223:38:072
20913995219,6cyclictest33-21ksoftirqd/223:59:072
20913995213,8cyclictest33-21ksoftirqd/219:16:442
134491520,4ptp4l0-21swapper/220:01:452
134491520,3ptp4l0-21swapper/323:24:473
134491520,3ptp4l0-21swapper/100:36:461
20913995122,3cyclictest33-21ksoftirqd/200:31:592
20913995120,5cyclictest33-21ksoftirqd/223:41:072
20913995118,4cyclictest33-21ksoftirqd/223:02:272
20913995118,4cyclictest33-21ksoftirqd/200:24:482
20913995116,5cyclictest33-21ksoftirqd/222:50:132
20913995113,7cyclictest33-21ksoftirqd/222:25:032
20913995113,4cyclictest33-21ksoftirqd/222:30:262
134491510,4ptp4l0-21swapper/220:26:532
134491510,4ptp4l0-21swapper/220:08:472
134491510,4ptp4l0-21swapper/220:08:472
134491510,4ptp4l0-21swapper/022:19:250
134491510,3ptp4l0-21swapper/022:45:240
134491510,12ptp4l0-21swapper/321:10:103
106882510,4sleep30-21swapper/321:05:213
20913995019,5cyclictest33-21ksoftirqd/220:20:212
20913995018,3cyclictest33-21ksoftirqd/219:28:572
134491500,9ptp4l6025-21ls20:55:193
134491500,4ptp4l0-21swapper/319:36:373
134491500,4ptp4l0-21swapper/223:19:412
134491500,4ptp4l0-21swapper/222:44:052
134491500,4ptp4l0-21swapper/023:38:120
134491500,4ptp4l0-21swapper/022:41:260
134491500,4ptp4l0-21swapper/021:39:040
134491500,4ptp4l0-21swapper/019:30:000
134491500,3ptp4l0-21swapper/121:35:241
20913994918,5cyclictest33-21ksoftirqd/221:07:462
2091299492,45cyclictest4280-21kworker/1:021:24:481
134491490,4ptp4l0-21swapper/320:21:243
134491490,4ptp4l0-21swapper/222:16:472
134491490,4ptp4l0-21swapper/221:44:162
134491490,4ptp4l0-21swapper/022:27:110
134491490,4ptp4l0-21swapper/021:50:130
134491490,3ptp4l0-21swapper/319:34:083
134491490,3ptp4l0-21swapper/023:48:230
134491490,2ptp4l0-21swapper/121:29:001
134491490,11ptp4l0-21swapper/323:37:033
20913994820,7cyclictest33-21ksoftirqd/219:49:302
20913994810,8cyclictest33-21ksoftirqd/223:23:362
134491480,5ptp4l0-21swapper/319:08:503
134491480,4ptp4l0-21swapper/323:15:563
134491480,4ptp4l0-21swapper/319:19:433
134491480,4ptp4l0-21swapper/221:23:342
134491480,4ptp4l0-21swapper/221:18:082
134491480,4ptp4l0-21swapper/219:09:202
134491480,4ptp4l0-21swapper/100:05:041
134491480,3ptp4l0-21swapper/319:59:203
134491480,3ptp4l0-21swapper/300:24:433
134491480,3ptp4l0-21swapper/022:21:060
134491480,10ptp4l19920-21python19:05:241
2091399472,4cyclictest0-21swapper/223:07:262
20913994716,3cyclictest33-21ksoftirqd/219:12:482
20913994715,4cyclictest33-21ksoftirqd/221:31:412
134491470,6ptp4l20643-21ls19:10:003
134491470,4ptp4l0-21swapper/319:50:213
134491470,4ptp4l0-21swapper/122:23:421
134491470,4ptp4l0-21swapper/020:40:170
134491470,3ptp4l0-21swapper/022:05:220
134491470,2ptp4l0-21swapper/321:46:543
134491470,2ptp4l0-21swapper/121:40:411
134491470,1ptp4l0-21swapper/320:31:233
2091399469,8cyclictest33-21ksoftirqd/200:11:462
20913994621,6cyclictest33-21ksoftirqd/222:35:262
2091299461,43cyclictest656-21kworker/1:022:37:201
134491460,9ptp4l0-21swapper/100:27:221
134491460,4ptp4l0-21swapper/300:14:583
134491460,3ptp4l0-21swapper/100:34:531
134491460,3ptp4l0-21swapper/021:46:050
20914994538,4cyclictest19743-21cut22:35:193
2091399453,3cyclictest0-21swapper/223:49:362
20913994516,3cyclictest33-21ksoftirqd/221:48:492
2091299453,40cyclictest0-21swapper/122:28:471
134491450,5ptp4l0-21swapper/300:35:253
134491450,4ptp4l0-21swapper/321:02:493
134491450,3ptp4l0-21swapper/323:41:593
134491450,3ptp4l0-21swapper/120:34:541
134491450,2ptp4l0-21swapper/322:15:223
20913994419,6cyclictest33-21ksoftirqd/220:40:252
134491440,9ptp4l0-21swapper/022:56:080
134491440,9ptp4l0-21swapper/020:16:320
134491440,5ptp4l0-21swapper/000:10:120
134491440,4ptp4l11998-21apt-get21:10:121
134491440,4ptp4l0-21swapper/320:37:283
134491440,4ptp4l0-21swapper/320:37:283
134491440,2ptp4l0-21swapper/123:49:381
20913994314,5cyclictest33-21ksoftirqd/219:44:022
20913994311,6cyclictest33-21ksoftirqd/200:30:012
134491430,5ptp4l0-21swapper/019:05:300
134491430,5ptp4l0-21swapper/000:15:270
134491430,3ptp4l0-21swapper/119:46:521
134491430,3ptp4l0-21swapper/019:10:280
134491430,10ptp4l0-21swapper/300:32:483
134491420,9ptp4l0-21swapper/022:11:560
134491420,5ptp4l4624-21apt-get20:55:011
134491420,5ptp4l0-21swapper/122:15:201
134491420,5ptp4l0-21swapper/022:50:270
134491420,5ptp4l0-21swapper/020:05:200
134491420,5ptp4l0-21swapper/020:05:200
134491420,4ptp4l29571-21ls20:35:261
134491420,4ptp4l29571-21ls20:35:261
134491420,4ptp4l11008-21ls23:25:181
134491420,4ptp4l0-21swapper/322:34:033
134491420,4ptp4l0-21swapper/322:10:123
134491420,3ptp4l10432-21df00:35:130
20911994136,3cyclictest11398-21kworker/0:223:03:560
134491410,5ptp4l3631-21/usr/sbin/munin00:20:131
134491410,5ptp4l0-21swapper/319:45:213
134491410,5ptp4l0-21swapper/020:00:130
134491410,5ptp4l0-21swapper/000:00:170
134491410,4ptp4l8744-21python21:00:260
134491410,4ptp4l7691-21df_inode22:10:141
134491410,4ptp4l31274-21memory20:40:211
134491410,4ptp4l2751-21apt-get22:00:141
134491410,4ptp4l27408-21ntp_states22:50:233
134491410,4ptp4l0-21swapper/322:57:143
134491410,4ptp4l0-21swapper/022:00:140
134491410,4ptp4l0-21swapper/000:32:190
134491410,3ptp4l32071-21ls00:10:211
134491410,3ptp4l3161-21apt-get23:10:133
134491410,3ptp4l18054-21ls23:40:221
134491410,10ptp4l0-21swapper/120:07:161
134491410,10ptp4l0-21swapper/120:07:161
134491400,5ptp4l19814-21/usr/sbin/munin21:25:200
134491400,5ptp4l15327-21cut23:35:191
134491400,5ptp4l0-21swapper/300:02:073
134491400,5ptp4l0-21swapper/121:45:171
134491400,5ptp4l0-21swapper/020:25:140
134491400,4ptp4l365-21df20:45:141
134491400,4ptp4l19375-21df22:35:140
134491400,4ptp4l19091-21df_inode20:15:141
134491400,4ptp4l17059-21iostat20:10:181
134491400,4ptp4l0-21swapper/320:00:303
134491400,4ptp4l0-21swapper/300:05:273
134491400,4ptp4l0-21swapper/123:55:241
134491400,4ptp4l0-21swapper/123:30:271
134491400,4ptp4l0-21swapper/121:05:151
134491400,4ptp4l0-21swapper/120:00:591
134491400,4ptp4l0-21swapper/100:15:181
134491400,4ptp4l0-21swapper/023:55:320
134491400,4ptp4l0-21swapper/023:29:120
134491400,4ptp4l0-21swapper/023:15:120
134491400,4ptp4l0-21swapper/020:14:540
134491400,4ptp4l0-21swapper/019:24:210
134491400,4ptp4l0-21swapper/000:30:010
134491400,4ptp4l0-21swapper/000:20:150
134491400,3ptp4l7234-21apt-get19:50:131
134491400,3ptp4l31436-21ntp_states20:40:233
134491400,3ptp4l24082-21irqstats19:15:190
46198390,3rtkit-daemon18088-21ls21:20:243
134491390,5ptp4l2091499cyclictest21:40:303
134491390,5ptp4l10490-21expr19:55:221
134491390,5ptp4l0-21swapper/320:25:133
134491390,5ptp4l0-21swapper/122:45:141
134491390,5ptp4l0-21swapper/020:45:140
134491390,4ptp4l3312-21irqrtprio19:40:183
134491390,4ptp4l31237-21ntpq19:30:230
134491390,4ptp4l17078-21/usr/sbin/munin22:30:160
134491390,4ptp4l15490-21/usr/sbin/munin21:15:231
134491390,4ptp4l0-21swapper/323:55:063
134491390,4ptp4l0-21swapper/323:54:043
134491390,4ptp4l0-21swapper/323:48:543
134491390,4ptp4l0-21swapper/323:30:143
134491390,4ptp4l0-21swapper/322:20:223
134491390,4ptp4l0-21swapper/321:50:403
134491390,4ptp4l0-21swapper/321:19:103
134491390,4ptp4l0-21swapper/320:08:043
134491390,4ptp4l0-21swapper/320:08:043
134491390,4ptp4l0-21swapper/319:26:523
134491390,4ptp4l0-21swapper/319:20:023
134491390,4ptp4l0-21swapper/300:15:213
134491390,4ptp4l0-21swapper/122:50:151
134491390,4ptp4l0-21swapper/122:05:121
134491390,4ptp4l0-21swapper/121:00:131
134491390,4ptp4l0-21swapper/119:30:241
134491390,4ptp4l0-21swapper/023:51:440
134491390,4ptp4l0-21swapper/023:44:340
134491390,4ptp4l0-21swapper/023:31:050
134491390,4ptp4l0-21swapper/023:24:250
134491390,4ptp4l0-21swapper/023:06:570
134491390,4ptp4l0-21swapper/021:40:250
134491390,4ptp4l0-21swapper/021:30:200
134491390,4ptp4l0-21swapper/021:15:170
134491390,4ptp4l0-21swapper/021:10:260
134491390,4ptp4l0-21swapper/020:35:260
134491390,4ptp4l0-21swapper/020:35:260
134491390,4ptp4l0-21swapper/020:21:370
134491390,4ptp4l0-21swapper/019:57:290
134491390,4ptp4l0-21swapper/019:47:390
134491390,3ptp4l7668-21runrttasks00:29:593
134491390,3ptp4l2780-21df20:50:140
134491390,3ptp4l21485-21df21:30:143
134491390,3ptp4l1299-21meminfo21:55:211
134491390,3ptp4l0-21swapper/320:50:193
134491390,3ptp4l0-21swapper/320:19:303
134491390,3ptp4l0-21swapper/121:50:201
20914993825,3cyclictest41-21ksoftirqd/320:10:103
20912993832,4cyclictest25-21ksoftirqd/123:01:101
134491380,5ptp4l0-21swapper/323:01:513
134491380,4ptp4l0-21swapper/322:27:343
134491380,4ptp4l0-21swapper/322:05:243
134491380,4ptp4l0-21swapper/322:04:243
134491380,4ptp4l0-21swapper/321:28:463
134491380,4ptp4l0-21swapper/320:46:093
134491380,4ptp4l0-21swapper/123:50:151
134491380,4ptp4l0-21swapper/121:30:161
134491380,4ptp4l0-21swapper/120:25:161
134491380,4ptp4l0-21swapper/119:37:001
134491380,4ptp4l0-21swapper/119:29:311
134491380,4ptp4l0-21swapper/119:10:161
134491380,4ptp4l0-21swapper/020:55:160
134491380,3ptp4l26050-21fschecks_count20:30:130
134491380,3ptp4l0-21swapper/323:05:273
134491380,3ptp4l0-21swapper/322:48:413
134491380,3ptp4l0-21swapper/123:13:581
134491380,3ptp4l0-21swapper/122:55:191
134491380,3ptp4l0-21swapper/119:40:381
134491380,3ptp4l0-21swapper/021:05:280
134491370,4ptp4l0-21swapper/322:40:273
134491370,4ptp4l0-21swapper/321:55:153
134491370,4ptp4l0-21swapper/321:36:403
134491370,4ptp4l0-21swapper/119:20:041
134491360,3ptp4l0-21swapper/123:06:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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