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2026-09-03 - 19:58
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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 Thu Sep 03, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2574499820,79cyclictest11412-21cat10:05:262
2574499820,79cyclictest11412-21cat10:05:262
25744997713,62cyclictest0-21swapper/209:40:292
2574499707,61cyclictest0-21swapper/212:30:282
2574499706,61cyclictest0-21swapper/211:10:282
2574499690,22cyclictest5129-21latency_hist09:54:592
75542680,4sleep00-21swapper/011:10:000
2574499670,29cyclictest28246-21chrt10:44:192
2574499670,27cyclictest25090-21phc2sys10:35:242
2574499670,27cyclictest25090-21phc2sys10:35:242
2574499670,22cyclictest6027-21cut09:55:182
296632660,7sleep32574599cyclictest07:15:273
2574499665,25cyclictest32528-21taskset08:31:402
2574499660,28cyclictest28216-21taskset11:54:472
2574499660,24cyclictest19949-21cut10:25:182
2574499651,27cyclictest16492-21chrt11:27:402
2574499650,26cyclictest25499-21taskset09:25:402
92522640,5sleep22574499cyclictest08:50:302
2574499641,26cyclictest32234-21taskset07:22:362
2574499640,29cyclictest25526-21chrt08:18:152
2574499640,26cyclictest18848-21chrt11:33:302
2574499630,26cyclictest16399-21chrt09:07:502
2574499630,26cyclictest11944-21taskset12:26:242
2574499630,26cyclictest11696-21taskset07:48:402
2574499621,27cyclictest27756-21taskset08:22:042
2574499620,26cyclictest4943-21chrt11:02:032
2574499620,26cyclictest4482-21chrt07:32:312
2574499620,26cyclictest2388-21taskset09:46:052
2574499620,26cyclictest23399-21chrt10:34:082
2574499620,26cyclictest16453-21chrt10:19:242
2574499620,26cyclictest11811-21taskset08:58:122
2574499620,25cyclictest16658-21chrt08:00:112
134491620,3ptp4l27978-21cut07:15:011
2574499612,23cyclictest0-21swapper/211:07:122
2574499610,27cyclictest7135-21taskset08:47:082
2574499610,27cyclictest4866-21taskset08:42:302
2574499610,26cyclictest7246-21chrt12:18:022
2574499610,26cyclictest32554-21taskset12:01:142
2574499610,26cyclictest23088-21chrt08:11:292
134491610,4ptp4l0-21swapper/110:35:021
134491610,4ptp4l0-21swapper/110:35:021
2574499600,27cyclictest20802-21taskset08:06:362
2574499600,26cyclictest23522-21taskset09:24:522
2574499600,26cyclictest16658-21chrt12:38:002
134491600,4ptp4l0-21swapper/108:20:211
2574499590,25cyclictest9237-21taskset07:41:342
134491590,4ptp4l0-21swapper/208:36:122
134491590,4ptp4l0-21swapper/012:15:160
2574599588,9cyclictest41-21ksoftirqd/310:34:593
134491580,4ptp4l0-21swapper/109:37:221
134491580,4ptp4l0-21swapper/109:37:221
134491580,4ptp4l0-21swapper/011:45:240
134491580,3ptp4l0-21swapper/109:25:201
134491580,17ptp4l17622-21irqstats10:20:191
25744995712,23cyclictest15770-21sed07:55:242
2574499570,26cyclictest11859-21chrt11:17:252
134491570,4ptp4l0-21swapper/108:45:201
134491570,3ptp4l0-21swapper/111:37:561
25745995616,3cyclictest41-21ksoftirqd/308:55:273
2574499560,25cyclictest21059-21taskset11:36:392
2574499560,21cyclictest26097-21apt-get09:30:152
134491560,4ptp4l0-21swapper/109:13:041
134491560,3ptp4l2827-21chrt10:59:431
134491560,3ptp4l0-21swapper/311:55:163
134491560,3ptp4l0-21swapper/310:07:363
134491560,3ptp4l0-21swapper/310:07:363
134491560,3ptp4l0-21swapper/111:25:161
134491560,3ptp4l0-21swapper/109:09:391
2574499550,26cyclictest13885-21taskset10:10:522
134491550,4ptp4l0-21swapper/311:17:263
134491550,3ptp4l0-21swapper/111:00:251
134491550,3ptp4l0-21swapper/108:00:151
2574499540,18cyclictest12756-21perl11:20:152
134491540,4ptp4l0-21swapper/111:30:021
134491540,4ptp4l0-21swapper/012:31:570
134491540,4ptp4l0-21swapper/008:56:380
134491540,3ptp4l0-21swapper/312:18:413
134491530,4ptp4l0-21swapper/011:10:080
134491520,5ptp4l0-21swapper/312:21:193
134491520,4ptp4l0-21swapper/107:40:171
134491520,4ptp4l0-21swapper/011:44:390
134491520,3ptp4l0-21swapper/108:19:051
134491520,3ptp4l0-21swapper/107:59:041
134491520,3ptp4l0-21swapper/008:09:030
134491520,3ptp4l0-21swapper/007:24:230
124582520,1sleep212461-21cut07:50:162
2574499510,21cyclictest1317-21runrttasks07:14:082
134491510,4ptp4l0-21swapper/108:44:091
134491510,4ptp4l0-21swapper/007:40:040
134491510,3ptp4l0-21swapper/109:50:291
134491510,3ptp4l0-21swapper/010:53:010
134491510,3ptp4l0-21swapper/007:16:200
134491510,11ptp4l0-21swapper/009:20:030
2574499502,22cyclictest0-21swapper/209:13:572
134491500,5ptp4l0-21swapper/007:08:430
134491500,4ptp4l0-21swapper/311:37:413
134491500,4ptp4l0-21swapper/308:11:463
134491500,3ptp4l0-21swapper/112:22:461
134491500,3ptp4l0-21swapper/107:20:231
25745994918,3cyclictest41-21ksoftirqd/307:45:273
2574599491,2cyclictest121rcu_preempt09:05:223
134491490,7ptp4l23411-21apt-get07:05:132
134491490,4ptp4l0-21swapper/111:15:351
134491490,4ptp4l0-21swapper/111:07:081
134491490,4ptp4l0-21swapper/008:23:030
134491490,3ptp4l0-21swapper/108:51:501
134491490,3ptp4l0-21swapper/011:17:040
2574499482,21cyclictest0-21swapper/211:43:572
134491480,4ptp4l0-21swapper/307:53:323
134491480,4ptp4l0-21swapper/112:06:171
134491480,3ptp4l0-21swapper/108:30:541
25745994712,5cyclictest41-21ksoftirqd/307:40:163
2574499472,21cyclictest0-21swapper/209:19:022
134491470,4ptp4l0-21swapper/308:35:473
134491470,3ptp4l0-21swapper/308:53:563
134491470,3ptp4l0-21swapper/109:02:351
25745994612,4cyclictest41-21ksoftirqd/307:39:593
134491460,4ptp4l0-21swapper/007:13:490
134491460,10ptp4l0-21swapper/307:05:183
2574599459,4cyclictest41-21ksoftirqd/309:45:003
25745994513,8cyclictest41-21ksoftirqd/310:29:593
2574599451,2cyclictest121rcu_preempt07:30:223
25745994511,8cyclictest41-21ksoftirqd/312:40:003
25742994532,4cyclictest9-21ksoftirqd/010:14:460
134491450,5ptp4l16126-21users10:15:280
134491450,5ptp4l0-21swapper/111:20:161
134491450,3ptp4l0-21swapper/110:04:411
134491450,3ptp4l0-21swapper/109:47:381
25745994438,3cyclictest41-21ksoftirqd/310:20:003
25745994412,8cyclictest41-21ksoftirqd/309:20:283
25745994412,4cyclictest41-21ksoftirqd/307:55:123
25742994438,3cyclictest9-21ksoftirqd/007:35:010
2574299441,2cyclictest134491ptp4l10:05:230
2574299441,2cyclictest134491ptp4l10:05:230
134491440,4ptp4l5316-21apt-get08:45:120
134491440,4ptp4l28693-21diskstats09:35:143
134491440,4ptp4l28693-21diskstats09:35:143
134491440,4ptp4l0-21swapper/212:22:042
134491440,4ptp4l0-21swapper/112:02:091
134491440,3ptp4l0-21swapper/112:15:571
134491440,3ptp4l0-21swapper/111:54:001
134491440,3ptp4l0-21swapper/009:30:160
134491440,10ptp4l0-21swapper/109:58:151
2574599437,3cyclictest41-21ksoftirqd/310:00:223
2574599436,5cyclictest41-21ksoftirqd/309:50:263
2574599435,7cyclictest41-21ksoftirqd/308:05:273
25745994337,3cyclictest41-21ksoftirqd/311:10:013
25745994314,6cyclictest41-21ksoftirqd/307:20:133
25745994313,4cyclictest41-21ksoftirqd/309:20:013
25745994312,8cyclictest41-21ksoftirqd/308:30:213
25745994310,7cyclictest41-21ksoftirqd/311:00:003
2574499430,25cyclictest25584-21taskset11:45:352
134491430,9ptp4l0-21swapper/209:37:522
134491430,9ptp4l0-21swapper/209:37:522
134491430,4ptp4l23934-21apt-get10:35:123
134491430,4ptp4l23934-21apt-get10:35:123
134491430,4ptp4l0-21swapper/312:14:173
134491430,4ptp4l0-21swapper/012:10:300
134491430,4ptp4l0-21swapper/012:03:090
134491430,4ptp4l0-21swapper/008:12:220
134491430,3ptp4l10178-21apt-get12:25:103
134491430,3ptp4l0-21swapper/210:24:072
134491430,3ptp4l0-21swapper/107:49:371
134491430,3ptp4l0-21swapper/107:34:481
2574599428,4cyclictest41-21ksoftirqd/311:45:163
2574599427,4cyclictest41-21ksoftirqd/312:00:273
2574599426,5cyclictest41-21ksoftirqd/310:45:263
25745994238,2cyclictest41-21ksoftirqd/311:34:593
25745994236,3cyclictest41-21ksoftirqd/309:34:593
2574599422,2cyclictest121rcu_preempt08:24:063
25745994214,3cyclictest41-21ksoftirqd/311:50:173
25745994213,11cyclictest41-21ksoftirqd/311:05:013
2574599421,2cyclictest121rcu_preempt10:20:333
25745994211,3cyclictest41-21ksoftirqd/308:20:013
2574499420,26cyclictest1471-21sed10:55:172
25742994237,3cyclictest9-21ksoftirqd/010:35:000
134491420,9ptp4l0-21swapper/107:54:221
134491420,8ptp4l0-21swapper/009:47:210
134491420,5ptp4l0-21swapper/312:05:113
134491420,5ptp4l0-21swapper/109:40:161
134491420,5ptp4l0-21swapper/011:35:150
134491420,5ptp4l0-21swapper/009:50:160
134491420,4ptp4l662-21apt-get12:05:132
134491420,4ptp4l31154-21df_inode10:50:141
134491420,4ptp4l28594-21/usr/sbin/munin11:55:100
134491420,4ptp4l26256-21apt-get10:40:111
134491420,4ptp4l21798-21df_inode09:20:141
134491420,4ptp4l19690-21iostat10:25:170
134491420,4ptp4l18447-21users10:20:290
134491420,4ptp4l11132-21memory12:25:201
134491420,4ptp4l10857-21meminfo08:55:201
134491420,4ptp4l0-21swapper/007:48:220
134491420,3ptp4l709-21apt-get10:55:110
134491420,3ptp4l28481-21apt-get11:55:092
134491420,3ptp4l2318-21gnome-shell11:50:580
2574599417,8cyclictest41-21ksoftirqd/311:10:223
25745994136,3cyclictest41-21ksoftirqd/309:15:013
25745994136,3cyclictest41-21ksoftirqd/307:10:233
25745994134,4cyclictest41-21ksoftirqd/309:57:593
25745994133,3cyclictest41-21ksoftirqd/308:45:253
2574299416,7cyclictest9-21ksoftirqd/010:45:010
134691410,10getstats0-21swapper/209:02:532
134491410,6ptp4l0-21swapper/008:30:200
134491410,5ptp4l212-21systemd-journal08:43:260
134491410,5ptp4l0-21swapper/310:10:293
134491410,5ptp4l0-21swapper/107:07:471
134491410,5ptp4l0-21swapper/009:25:140
134491410,4ptp4l7614-21apt-get08:50:130
134491410,4ptp4l4286-21/usr/sbin/munin11:00:250
134491410,4ptp4l19600-21iostat_ios08:05:181
134491410,4ptp4l0-21swapper/311:41:413
134491410,4ptp4l0-21swapper/212:10:162
134491410,4ptp4l0-21swapper/110:18:551
134491410,4ptp4l0-21swapper/010:39:130
134491410,4ptp4l0-21swapper/010:39:130
134491410,4ptp4l0-21swapper/009:15:170
134491410,4ptp4l0-21swapper/009:05:150
134491410,3ptp4l8733-21ls11:10:201
134491410,3ptp4l26398-21df_inode09:30:181
134491410,3ptp4l24832-21meminfo11:45:191
134491410,3ptp4l15079-21df_inode12:35:161
134491410,3ptp4l13501-21ls12:30:251
2574599409,7cyclictest41-21ksoftirqd/308:40:213
2574599404,10cyclictest41-21ksoftirqd/307:25:203
2574599402,2cyclictest121rcu_preempt09:00:203
2574599401,2cyclictest121rcu_preempt08:02:533
2574499400,21cyclictest28816-21irqrtprio08:25:192
2574299401,3cyclictest121rcu_preempt08:02:410
134491400,5ptp4l0-21swapper/010:45:290
134491400,4ptp4l28765-21df10:45:141
134491400,4ptp4l28547-21diskstats08:25:153
134491400,4ptp4l24568-21meminfo08:15:190
134491400,4ptp4l21749-21hddtemp_smartct08:10:151
134491400,4ptp4l0-21swapper/312:31:263
134491400,4ptp4l0-21swapper/210:53:522
134491400,4ptp4l0-21swapper/210:49:202
134491400,4ptp4l0-21swapper/108:35:261
134491400,4ptp4l0-21swapper/012:25:440
134491400,4ptp4l0-21swapper/012:07:170
134491400,4ptp4l0-21swapper/011:33:090
134491400,4ptp4l0-21swapper/011:27:010
134491400,4ptp4l0-21swapper/010:01:490
134491400,4ptp4l0-21swapper/009:57:430
134491400,4ptp4l0-21swapper/008:35:140
134491400,4ptp4l0-21swapper/008:25:230
134491400,4ptp4l0-21swapper/007:29:520
134491400,3ptp4l15723-21meminfo12:35:220
134491400,3ptp4l14928-21iostat_ios07:55:160
134491400,3ptp4l0-21swapper/109:15:181
2574599395,8cyclictest41-21ksoftirqd/311:25:243
25745993933,3cyclictest41-21ksoftirqd/310:40:183
134491390,4ptp4l28806-21iostat08:25:181
134491390,4ptp4l14323-21idleruntime-cro09:04:590
134491390,4ptp4l0-21swapper/310:52:473
134491390,4ptp4l0-21swapper/309:47:443
134491390,4ptp4l0-21swapper/210:00:102
134491390,4ptp4l0-21swapper/207:28:282
134491390,4ptp4l0-21swapper/112:12:201
134491390,4ptp4l0-21swapper/111:44:011
134491390,4ptp4l0-21swapper/110:25:101
134491390,4ptp4l0-21swapper/107:35:461
134491390,4ptp4l0-21swapper/012:20:140
134491390,4ptp4l0-21swapper/011:20:160
134491390,4ptp4l0-21swapper/009:44:540
134491390,4ptp4l0-21swapper/007:35:120
134491390,3ptp4l29012-21meminfo07:15:201
134491390,3ptp4l10971-21ntpq10:05:231
134491390,3ptp4l10971-21ntpq10:05:231
134491390,3ptp4l0-21swapper/111:55:221
134491390,3ptp4l0-21swapper/009:10:190
134491380,4ptp4l13607-21timerandwakeup10:10:321
134491380,4ptp4l0-21swapper/311:21:523
134491380,4ptp4l0-21swapper/309:26:343
134491380,4ptp4l0-21swapper/207:36:052
134491380,4ptp4l0-21swapper/207:17:262
134491380,4ptp4l0-21swapper/107:25:081
134491380,3ptp4l0-21swapper/009:37:120
134491380,3ptp4l0-21swapper/009:37:120
134491380,3ptp4l0-21swapper/007:51:070
134491370,3ptp4l0-21swapper/110:30:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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