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2026-09-14 - 01:32
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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 Sun Sep 13, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3185699821,77cyclictest31881-21latency_hist08:20:012
3185699680,26cyclictest29719-21chrt09:23:112
134491680,3ptp4l0-21swapper/311:45:183
134691670,11getstats0-21swapper/212:20:102
134491670,4ptp4l0-21swapper/207:05:112
3185699650,29cyclictest32501-21taskset10:39:052
3185699650,26cyclictest16081-21taskset11:11:302
3185699641,26cyclictest6473-21taskset09:41:362
3185699640,27cyclictest18437-21chrt11:16:362
3185699640,27cyclictest18437-21chrt11:16:362
3185699640,26cyclictest17859-21taskset07:48:362
3185699640,25cyclictest20546-21chrt10:11:412
134491640,24ptp4l7759-21phc2sys08:35:240
134491640,18ptp4l8527-21cat09:45:303
3185699630,28cyclictest22337-21taskset07:57:102
3185699630,27cyclictest13760-21chrt09:59:052
134491630,20ptp4l0-21swapper/009:20:260
3185699620,26cyclictest9362-21taskset12:06:472
3185699620,26cyclictest23044-21taskset10:15:572
3185699610,28cyclictest8262-21chrt07:27:052
3185699610,26cyclictest1597-21chrt08:23:452
3185699600,26cyclictest2152-21taskset11:51:222
3185699591,25cyclictest2495-21taskset10:44:232
3185699590,27cyclictest19075-21taskset12:29:542
134491590,5ptp4l0-21swapper/311:40:203
134491590,3ptp4l0-21swapper/112:21:551
3185699582,17cyclictest0-21swapper/207:33:592
3185699580,26cyclictest3802-21taskset07:19:022
3185699580,26cyclictest24561-21chrt08:00:592
134491570,4ptp4l0-21swapper/309:00:203
3185699560,52cyclictest31883-21sort11:45:252
3185699560,26cyclictest23103-21chrt11:27:152
3185699560,25cyclictest10884-21chrt08:41:182
3185699560,25cyclictest10884-21chrt08:41:182
3185699552,51cyclictest0-21swapper/212:31:262
3185699552,51cyclictest0-21swapper/212:31:262
3185699552,21cyclictest0-21swapper/211:04:322
3185699550,28cyclictest13955-21taskset11:08:462
3185699550,26cyclictest14143-21chrt12:19:142
134491550,4ptp4l0-21swapper/110:24:141
134491550,4ptp4l0-21swapper/010:04:240
134491550,4ptp4l0-21swapper/010:04:240
134491550,3ptp4l0-21swapper/309:10:023
134491540,4ptp4l0-21swapper/310:55:273
134491540,4ptp4l0-21swapper/111:16:191
134491540,4ptp4l0-21swapper/111:16:191
3185699532,19cyclictest0-21swapper/208:55:162
134491530,4ptp4l0-21swapper/312:01:063
134491530,4ptp4l0-21swapper/309:19:163
134491530,4ptp4l0-21swapper/307:42:033
134491530,3ptp4l0-21swapper/107:29:421
3185699521,48cyclictest8341-21meminfo10:55:192
134491520,4ptp4l0-21swapper/310:27:473
134491520,4ptp4l0-21swapper/107:59:491
134491520,3ptp4l0-21swapper/307:55:173
134491520,3ptp4l0-21swapper/109:47:081
134491520,3ptp4l0-21swapper/108:44:581
134491520,3ptp4l0-21swapper/108:44:581
3185699510,21cyclictest13353-21/usr/sbin/munin07:40:132
286092510,4sleep3391rcuc/310:30:153
134491510,5ptp4l0-21swapper/007:19:450
134491510,4ptp4l0-21swapper/312:09:003
134491510,4ptp4l0-21swapper/012:32:270
134491510,4ptp4l0-21swapper/012:32:270
3185699500,47cyclictest11376-21fschecks_count07:35:172
134491500,4ptp4l0-21swapper/312:39:103
134491500,4ptp4l0-21swapper/011:54:330
134491500,4ptp4l0-21swapper/010:49:200
134491500,3ptp4l0-21swapper/111:51:411
134491500,11ptp4l0-21swapper/007:09:360
3185699490,46cyclictest3133-21ntp_states08:25:242
134491490,4ptp4l0-21swapper/312:12:573
134491490,4ptp4l0-21swapper/307:14:413
134491490,3ptp4l0-21swapper/107:32:071
3185699480,45cyclictest2792-21dpkg11:55:012
134491480,4ptp4l0-21swapper/110:17:311
134491480,4ptp4l0-21swapper/109:29:511
134491480,4ptp4l0-21swapper/107:16:471
134491480,3ptp4l0-21swapper/312:25:413
134491480,11ptp4l0-21swapper/308:50:223
134491470,4ptp4l0-21swapper/309:53:203
134491470,4ptp4l0-21swapper/008:27:100
134491470,3ptp4l0-21swapper/110:10:591
134491470,3ptp4l0-21swapper/012:35:130
3185699462,42cyclictest16949-21kworker/2:208:50:282
134491460,4ptp4l0-21swapper/108:37:351
134491460,3ptp4l3185499cyclictest07:38:330
134491460,3ptp4l0-21swapper/111:02:161
3185699452,41cyclictest0-21swapper/209:50:212
3185699450,19cyclictest1301-21snmpd11:30:172
134491450,4ptp4l0-21swapper/112:05:031
134491450,4ptp4l0-21swapper/111:26:521
134491450,4ptp4l0-21swapper/011:09:450
134491450,3ptp4l13583-21ls12:15:280
134491450,3ptp4l0-21swapper/308:03:353
134491450,3ptp4l0-21swapper/111:13:351
134491450,3ptp4l0-21swapper/108:55:351
134491440,9ptp4l0-21swapper/307:05:133
134491440,9ptp4l0-21swapper/207:10:012
134491440,5ptp4l0-21swapper/308:35:123
134491440,5ptp4l0-21swapper/211:20:132
134491440,5ptp4l0-21swapper/211:20:132
134491440,4ptp4l0-21swapper/310:01:103
134491440,4ptp4l0-21swapper/310:01:103
134491440,4ptp4l0-21swapper/308:16:093
134491440,4ptp4l0-21swapper/110:50:341
134491440,4ptp4l0-21swapper/009:36:310
134491440,3ptp4l0-21swapper/109:15:181
134491440,2ptp4l121rcu_preempt07:35:223
46198430,5rtkit-daemon0-21swapper/311:20:163
46198430,5rtkit-daemon0-21swapper/311:20:163
31857994338,3cyclictest41-21ksoftirqd/311:20:003
31857994338,3cyclictest41-21ksoftirqd/311:20:003
134491430,9ptp4l0-21swapper/208:06:322
134491430,7ptp4l0-21swapper/107:09:311
134491430,5ptp4l7403-21meminfo07:25:200
134491430,5ptp4l0-21swapper/312:15:143
134491430,4ptp4l32434-21apt-get09:30:173
134491430,4ptp4l32059-21apt-get08:20:113
134491430,4ptp4l1780-21apt-get07:15:123
134491430,4ptp4l0-21swapper/311:28:083
134491430,4ptp4l0-21swapper/308:32:313
134491430,4ptp4l0-21swapper/111:20:181
134491430,4ptp4l0-21swapper/111:20:181
134491430,4ptp4l0-21swapper/107:43:211
134491430,4ptp4l0-21swapper/010:17:200
134491430,3ptp4l0-21swapper/210:30:162
134491430,10ptp4l0-21swapper/309:55:263
134491420,8ptp4l0-21swapper/107:45:561
134491420,7ptp4l9-21ksoftirqd/009:40:160
134491420,6ptp4l16598-21iostat_ios08:55:180
134491420,4ptp4l9711-21apt-get11:00:123
134491420,4ptp4l3185799cyclictest11:54:143
134491420,4ptp4l2491-21apt-get11:55:023
134491420,4ptp4l21846-21apt-get12:35:112
134491420,4ptp4l1966-21apt-get08:25:133
134491420,4ptp4l19073-21df_inode10:10:190
134491420,4ptp4l12368-21iostat09:55:200
134491420,4ptp4l11433-21apt-get08:45:102
134491420,4ptp4l0-21swapper/110:44:531
134491420,4ptp4l0-21swapper/108:24:551
31857994136,3cyclictest41-21ksoftirqd/311:40:003
3185699411,14cyclictest46198rtkit-daemon10:07:262
134691410,4getstats0-21swapper/208:30:062
134491410,9ptp4l0-21swapper/209:39:262
134491410,9ptp4l0-21swapper/209:32:502
134491410,5ptp4l9446-21diskstats08:40:153
134491410,5ptp4l9446-21diskstats08:40:153
134491410,5ptp4l0-21swapper/310:45:153
134491410,5ptp4l0-21swapper/209:45:232
134491410,5ptp4l0-21swapper/010:20:180
134491410,4ptp4l28183-21apt-get11:40:122
134491410,4ptp4l25932-21apt-get10:25:132
134491410,4ptp4l24411-21irqstats11:30:180
134491410,4ptp4l17197-21ntp_states08:55:243
134491410,4ptp4l10625-21ntp_states09:50:270
134491410,4ptp4l0-21swapper/312:30:213
134491410,4ptp4l0-21swapper/312:30:213
134491410,4ptp4l0-21swapper/212:00:152
134491410,4ptp4l0-21swapper/209:25:472
134491410,4ptp4l0-21swapper/112:01:281
134491410,4ptp4l0-21swapper/009:15:130
134491410,3ptp4l16603-21apt-get11:15:130
134491410,3ptp4l16603-21apt-get11:15:120
134491410,3ptp4l0-21swapper/307:27:043
134491410,3ptp4l0-21swapper/009:25:520
134491410,3ptp4l0-21swapper/007:11:340
3185699402,19cyclictest0-21swapper/208:15:002
134491400,8ptp4l0-21swapper/209:10:452
134491400,8ptp4l0-21swapper/012:13:300
134491400,5ptp4l4491-21cat09:40:003
134491400,5ptp4l0-21swapper/310:05:223
134491400,5ptp4l0-21swapper/212:10:152
134491400,5ptp4l0-21swapper/012:30:000
134491400,5ptp4l0-21swapper/010:56:390
134491400,5ptp4l0-21swapper/007:20:140
134491400,4ptp4l26297-21hddtemp_smartct11:35:160
134491400,4ptp4l25572-21hddtemp_smartct08:05:171
134491400,4ptp4l23408-21iostat08:00:221
134491400,4ptp4l0-21swapper/309:29:423
134491400,4ptp4l0-21swapper/210:50:242
134491400,4ptp4l0-21swapper/209:19:142
134491400,4ptp4l0-21swapper/208:35:062
134491400,4ptp4l0-21swapper/207:50:142
134491400,4ptp4l0-21swapper/110:29:011
134491400,4ptp4l0-21swapper/109:55:221
134491400,4ptp4l0-21swapper/109:39:151
134491400,4ptp4l0-21swapper/108:45:131
134491400,4ptp4l0-21swapper/107:50:151
134491400,4ptp4l0-21swapper/107:20:111
134491400,4ptp4l0-21swapper/012:06:050
134491400,4ptp4l0-21swapper/012:00:520
134491400,4ptp4l0-21swapper/011:45:270
134491400,4ptp4l0-21swapper/008:42:140
134491400,4ptp4l0-21swapper/008:42:140
134491400,4ptp4l0-21swapper/008:15:150
134491400,3ptp4l8750-21apt-get07:30:113
134491400,3ptp4l740-21ntp_states08:20:240
134491400,3ptp4l5104-21apt-get10:50:153
134491400,3ptp4l29904-21users10:30:281
134491400,3ptp4l24757-21ntp_states10:20:233
134491400,3ptp4l10037-21systemctl07:30:230
134491400,3ptp4l0-21swapper/307:49:553
134491400,3ptp4l0-21swapper/112:32:171
134491400,3ptp4l0-21swapper/112:32:171
46198390,5rtkit-daemon11742-21diskstats08:45:143
134491390,5ptp4l24065-21/usr/sbin/munin10:20:162
134491390,5ptp4l0-21swapper/311:06:263
134491390,4ptp4l9-21ksoftirqd/011:20:160
134491390,4ptp4l9-21ksoftirqd/011:20:160
134491390,4ptp4l15016-21mailstats08:50:240
134491390,4ptp4l0-21swapper/311:30:213
134491390,4ptp4l0-21swapper/310:40:143
134491390,4ptp4l0-21swapper/310:35:163
134491390,4ptp4l0-21swapper/310:10:213
134491390,4ptp4l0-21swapper/307:20:303
134491390,4ptp4l0-21swapper/209:00:152
134491390,4ptp4l0-21swapper/112:15:341
134491390,4ptp4l0-21swapper/111:30:201
134491390,4ptp4l0-21swapper/110:05:181
134491390,4ptp4l0-21swapper/109:30:211
134491390,4ptp4l0-21swapper/109:11:301
134491390,4ptp4l0-21swapper/109:00:241
134491390,4ptp4l0-21swapper/011:40:220
134491390,4ptp4l0-21swapper/011:00:450
134491390,4ptp4l0-21swapper/010:40:150
134491390,4ptp4l0-21swapper/010:35:290
134491390,4ptp4l0-21swapper/010:05:200
134491390,4ptp4l0-21swapper/009:45:240
134491390,4ptp4l0-21swapper/009:05:160
134491390,4ptp4l0-21swapper/009:00:300
134491390,4ptp4l0-21swapper/008:48:150
134491390,4ptp4l0-21swapper/008:10:280
134491390,4ptp4l0-21swapper/007:45:230
134491390,3ptp4l30040-21diskstats08:15:151
134491390,3ptp4l29545-21awk10:30:250
134491390,3ptp4l27746-21diskstats08:10:163
134491390,3ptp4l27211-21python11:35:262
134491390,3ptp4l22268-21ls09:05:303
134491390,3ptp4l0-21swapper/112:28:591
134491380,4ptp4l0-21swapper/312:20:213
134491380,4ptp4l0-21swapper/311:10:153
134491380,4ptp4l0-21swapper/309:20:163
134491380,4ptp4l0-21swapper/308:05:153
134491380,4ptp4l0-21swapper/307:50:223
134491380,4ptp4l0-21swapper/210:45:172
134491380,4ptp4l0-21swapper/210:00:202
134491380,4ptp4l0-21swapper/210:00:202
134491380,4ptp4l0-21swapper/209:07:592
134491380,4ptp4l0-21swapper/207:23:382
134491380,4ptp4l0-21swapper/112:12:151
134491380,4ptp4l0-21swapper/111:47:091
134491380,4ptp4l0-21swapper/111:37:321
134491380,4ptp4l0-21swapper/111:06:111
134491380,4ptp4l0-21swapper/110:56:151
134491380,4ptp4l0-21swapper/110:38:241
134491380,4ptp4l0-21swapper/110:00:331
134491380,4ptp4l0-21swapper/110:00:331
134491380,4ptp4l0-21swapper/109:20:121
134491380,4ptp4l0-21swapper/109:05:061
134491380,4ptp4l0-21swapper/108:27:301
134491380,4ptp4l0-21swapper/108:11:211
134491380,4ptp4l0-21swapper/107:38:191
134491380,4ptp4l0-21swapper/012:20:260
134491380,4ptp4l0-21swapper/011:55:140
134491380,4ptp4l0-21swapper/011:25:300
134491380,4ptp4l0-21swapper/010:50:220
134491380,4ptp4l0-21swapper/009:30:270
134491380,4ptp4l0-21swapper/008:31:040
134491380,4ptp4l0-21swapper/008:05:250
134491380,4ptp4l0-21swapper/008:04:210
134491380,4ptp4l0-21swapper/007:55:490
134491380,4ptp4l0-21swapper/007:51:530
134491380,3ptp4l5716-21ls09:40:213
134491380,3ptp4l5248-21ls08:30:191
134491380,3ptp4l3261-21diskstats11:55:151
134491380,3ptp4l15350-21strings11:10:250
134491380,3ptp4l0-21swapper/310:15:213
134491380,3ptp4l0-21swapper/109:50:371
134491380,3ptp4l0-21swapper/109:43:311
134491380,3ptp4l0-21swapper/107:13:241
134491380,3ptp4l0-21swapper/009:10:150
134491370,3ptp4l26232-21chrt10:25:150
134491370,3ptp4l0-21swapper/112:35:251
134491370,3ptp4l0-21swapper/111:40:341
134491370,3ptp4l0-21swapper/110:45:411
134491370,3ptp4l0-21swapper/108:54:581
134491370,3ptp4l0-21swapper/007:40:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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