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2026-05-09 - 06:29
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Sat May 09, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123221360,6sleep11470799cyclictest23:20:001
14709996611,11cyclictest23910-21taskset21:46:043
14709996610,12cyclictest25862-21chrt19:33:203
134491660,22ptp4l21797-21apt-get20:35:122
298492650,5sleep1448-21dbus-daemon19:40:241
14709996511,11cyclictest21720-21chrt00:00:343
134491650,4ptp4l0-21swapper/223:25:072
14709996411,11cyclictest1249-21chrt00:25:533
14709996410,12cyclictest14959-21taskset21:29:163
14709996410,10cyclictest5777-21taskset22:17:453
134491640,4ptp4l0-21swapper/222:24:072
228482630,4sleep00-21swapper/022:55:160
1470999635,15cyclictest32688-21phc2sys23:15:223
1470699635,15cyclictest0-21swapper/023:20:120
268532600,4sleep10-21swapper/121:55:111
250772600,4sleep30-21swapper/320:40:193
1470699606,7cyclictest624-21apt-get21:00:000
1470699604,15cyclictest29646-21interrupts22:00:170
134491600,4ptp4l0-21swapper/123:35:241
1470999596,17cyclictest22315-21/usr/sbin/munin00:05:233
14709995910,9cyclictest8230-21runrttasks23:34:513
134491580,5ptp4l0-21swapper/223:50:262
134491580,4ptp4l0-21swapper/019:25:250
134491570,3ptp4l0-21swapper/021:15:230
134491570,3ptp4l0-21swapper/020:50:170
134491560,4ptp4l0-21swapper/223:39:552
134491560,4ptp4l0-21swapper/222:34:552
134491560,4ptp4l0-21swapper/200:37:542
134491560,4ptp4l0-21swapper/100:33:141
134491560,3ptp4l0-21swapper/219:30:202
1470699556,5cyclictest13389-21fschecks_time21:25:150
1470699552,11cyclictest18568-21cat19:15:250
134491550,4ptp4l13380-21sed19:05:203
134491550,4ptp4l0-21swapper/121:36:071
134491550,3ptp4l0-21swapper/223:15:252
1470999543,16cyclictest17549-21/usr/sbin/munin21:35:163
1470999543,16cyclictest0-21swapper/300:35:163
1470699547,6cyclictest0-21swapper/019:20:230
1470699545,10cyclictest0-21swapper/020:10:120
134491540,4ptp4l0-21swapper/222:54:282
134491540,4ptp4l0-21swapper/221:01:052
134491540,4ptp4l0-21swapper/121:48:541
134491540,3ptp4l0-21swapper/121:13:141
134491540,3ptp4l0-21swapper/121:13:141
1470999537,9cyclictest20058-21interrupts20:30:173
14709995313,18cyclictest31106-21taskset23:12:463
134491530,3ptp4l0-21swapper/222:25:072
134491530,3ptp4l0-21swapper/119:31:371
1470999524,11cyclictest0-21swapper/320:15:263
1470699522,6cyclictest0-21swapper/023:50:180
1470699522,17cyclictest31747-21sed19:45:200
1470699521,10cyclictest28002-21expr00:15:200
134491520,4ptp4l0-21swapper/122:56:591
1470999519,8cyclictest12039-21taskset20:14:013
1470699513,6cyclictest26852-21cpuspeed21:55:110
134491510,5ptp4l0-21swapper/200:13:002
134491510,5ptp4l0-21swapper/100:22:211
134491510,4ptp4l0-21swapper/223:48:102
134491510,4ptp4l0-21swapper/221:41:122
134491510,3ptp4l0-21swapper/222:40:172
219062500,4sleep125-21ksoftirqd/120:35:121
14709995013,17cyclictest16537-21taskset19:11:563
14709995011,10cyclictest12195-21taskset21:21:113
1470699506,9cyclictest0-21swapper/020:20:170
1470699506,6cyclictest25008-21expr00:10:120
1470699502,4cyclictest0-21swapper/022:05:160
1470699500,17cyclictest15204-21ls19:10:150
134491500,4ptp4l0-21swapper/223:23:342
134491500,4ptp4l0-21swapper/221:46:562
134491500,4ptp4l0-21swapper/220:10:072
134491500,4ptp4l0-21swapper/020:17:020
134491500,3ptp4l0-21swapper/221:15:172
14709994912,11cyclictest1301-21snmpd23:46:063
14709994911,17cyclictest3362-21taskset22:14:013
14709994911,17cyclictest3362-21taskset22:14:013
14709994910,6cyclictest137891phc2sys23:27:183
14709994910,10cyclictest2607-21chrt19:51:533
1470699497,6cyclictest0-21swapper/022:15:170
1470699496,5cyclictest25449-21timerwakeupswit19:30:270
1470699492,9cyclictest19434-21cat20:30:020
134491490,4ptp4l0-21swapper/223:06:162
134491490,4ptp4l0-21swapper/221:08:232
134491490,4ptp4l0-21swapper/220:24:012
134491490,3ptp4l19697-1kworker/2:1H21:53:002
134491490,12ptp4l0-21swapper/219:05:212
134491490,10ptp4l13323-21meminfo19:05:191
1470999486,6cyclictest0-21swapper/319:37:313
14709994811,19cyclictest30464-21taskset20:51:263
1470699486,12cyclictest26747-21cut23:05:000
1470699484,6cyclictest21636-21awk22:50:250
1470699480,10cyclictest30862-21awk23:10:260
1470999477,9cyclictest30519-21ssh22:00:263
1470999477,7cyclictest1082-21appstreamcli21:00:023
1470999476,6cyclictest0-21swapper/319:43:493
1470999476,5cyclictest0-21swapper/322:29:063
1470999476,5cyclictest0-21swapper/300:32:343
14707994712,4cyclictest25-21ksoftirqd/123:05:011
1470699472,5cyclictest0-21swapper/019:55:260
1470699470,11cyclictest16516-21processes21:30:230
134491470,4ptp4l0-21swapper/220:26:562
134491470,3ptp4l0-21swapper/221:34:182
134491470,10ptp4l0-21swapper/122:09:561
1470999467,36cyclictest22372-21irqrtprio20:35:173
1470999466,5cyclictest0-21swapper/319:26:073
1470699463,6cyclictest26642-21fschecks_time19:35:150
1470699461,5cyclictest9-21ksoftirqd/022:42:080
134491460,4ptp4l0-21swapper/223:40:242
134491460,4ptp4l0-21swapper/221:13:452
134491460,4ptp4l0-21swapper/221:13:452
134491460,4ptp4l0-21swapper/120:54:401
134491460,3ptp4l0-21swapper/223:14:092
1470699456,5cyclictest23734-21sed21:45:260
1470699454,6cyclictest0-21swapper/022:10:150
1470699454,6cyclictest0-21swapper/022:10:150
1470699450,13cyclictest25414-21ls21:50:180
134491450,4ptp4l26389-21ls00:10:263
134491450,10ptp4l0-21swapper/322:40:263
1470999446,12cyclictest0-21swapper/323:23:043
1470999444,14cyclictest28068-21meminfo00:15:213
14709994410,11cyclictest773-21taskset22:07:163
14707994439,3cyclictest25-21ksoftirqd/100:40:001
134491440,9ptp4l0-21swapper/220:57:492
134491440,9ptp4l0-21swapper/219:47:172
134491440,9ptp4l0-21swapper/119:49:091
134491440,7ptp4l0-21swapper/019:05:170
134491440,4ptp4l19301-21ls22:45:261
134491440,4ptp4l0-21swapper/222:39:142
134491440,4ptp4l0-21swapper/121:06:041
134491440,4ptp4l0-21swapper/119:27:411
134491440,4ptp4l0-21swapper/119:23:351
134491440,3ptp4l1853-21apt-get00:30:142
134491440,3ptp4l0-21swapper/119:16:201
134491440,3ptp4l0-21swapper/119:14:241
134491440,11ptp4l0-21swapper/220:05:132
134491440,10ptp4l0-21swapper/220:02:352
134491440,10ptp4l0-21swapper/000:35:220
46198430,10rtkit-daemon0-21swapper/219:25:452
1470999437,8cyclictest31442-21ps19:45:183
1470999436,8cyclictest0-21swapper/300:23:563
14709994312,9cyclictest412-21taskset20:57:413
14707994338,3cyclictest25-21ksoftirqd/120:00:001
1470699434,6cyclictest8800-21diskstats23:35:130
1470699432,9cyclictest0-21swapper/022:21:140
134491430,9ptp4l0-21swapper/219:56:092
134491430,9ptp4l0-21swapper/219:19:012
134491430,9ptp4l0-21swapper/021:07:280
134491430,5ptp4l0-21swapper/121:00:031
134491430,4ptp4l0-21swapper/122:32:201
1470999426,5cyclictest0-21swapper/321:30:233
1470999425,6cyclictest0-21swapper/320:07:263
1470799429,8cyclictest25-21ksoftirqd/123:25:001
1470799428,4cyclictest25-21ksoftirqd/123:40:211
1470799426,4cyclictest25-21ksoftirqd/120:20:011
14707994236,3cyclictest25-21ksoftirqd/121:00:001
1470699425,6cyclictest11129-21diskstats22:30:160
1470699422,7cyclictest0-21swapper/022:35:140
1470699422,6cyclictest101ktimersoftd/022:50:000
134691420,10getstats0-21swapper/219:38:502
134491420,9ptp4l0-21swapper/022:29:570
134491420,8ptp4l0-21swapper/222:10:552
134491420,8ptp4l0-21swapper/222:10:542
134491420,8ptp4l0-21swapper/219:11:532
134491420,8ptp4l0-21swapper/200:20:332
134491420,5ptp4l0-21swapper/120:00:111
134491420,4ptp4l26410-21apt-get20:45:120
134491420,4ptp4l10504-21hddtemp_smartct20:10:161
134491420,4ptp4l0-21swapper/220:19:292
134491420,4ptp4l0-21swapper/120:20:321
134491420,3ptp4l0-21swapper/122:16:521
1470999416,6cyclictest0-21swapper/320:21:303
1470999416,5cyclictest0-21swapper/323:43:103
1470999416,5cyclictest0-21swapper/319:18:013
1470799416,3cyclictest25-21ksoftirqd/100:00:251
14707994137,2cyclictest25-21ksoftirqd/120:30:001
14707994136,3cyclictest25-21ksoftirqd/121:25:021
14707994135,3cyclictest25-21ksoftirqd/123:10:261
1470699412,4cyclictest0-21swapper/020:00:230
134491410,8ptp4l0-21swapper/220:51:572
134491410,8ptp4l0-21swapper/219:52:192
134491410,5ptp4l0-21swapper/223:00:282
134491410,5ptp4l0-21swapper/221:35:162
134491410,5ptp4l0-21swapper/221:25:032
134491410,5ptp4l0-21swapper/023:25:250
134491410,4ptp4l7343-21ntp_states22:20:223
134491410,4ptp4l26814-21iostat_ios19:35:161
134491410,4ptp4l20978-21meminfo00:00:190
134491410,4ptp4l0-21swapper/321:40:123
134491410,4ptp4l0-21swapper/222:03:322
134491410,4ptp4l0-21swapper/123:05:021
134491410,4ptp4l0-21swapper/121:30:231
134491410,4ptp4l0-21swapper/119:50:421
134491410,3ptp4l713-21apt-get19:50:120
134491410,3ptp4l20029-21apt-get00:00:122
134491410,10ptp4l0-21swapper/321:57:203
1470999406,5cyclictest0-21swapper/322:56:133
14707994035,3cyclictest25-21ksoftirqd/121:18:591
1470699402,7cyclictest17563-21iostat_ios20:25:170
1470699402,6cyclictest134491ptp4l21:13:330
1470699402,6cyclictest134491ptp4l21:13:330
1470699401,4cyclictest0-21swapper/019:42:400
1470699400,2cyclictest137891phc2sys21:35:180
134491400,5ptp4l0-21swapper/200:29:182
134491400,4ptp4l8345-21iostat20:05:170
134491400,4ptp4l4665-21ntp_states21:05:233
134491400,4ptp4l29655-21iostat22:00:181
134491400,4ptp4l27547-21hddtemp_smartct00:15:171
134491400,4ptp4l19500-21apt-get20:30:121
134491400,4ptp4l18854-21ntp_states22:45:223
134491400,4ptp4l14063-21memory23:45:201
134491400,4ptp4l13919-21memory21:25:211
134491400,4ptp4l0-21swapper/323:00:133
134491400,4ptp4l0-21swapper/322:35:253
134491400,4ptp4l0-21swapper/322:30:263
134491400,4ptp4l0-21swapper/319:55:273
134491400,4ptp4l0-21swapper/223:56:332
134491400,4ptp4l0-21swapper/222:58:002
134491400,4ptp4l0-21swapper/222:45:212
134491400,4ptp4l0-21swapper/222:15:122
134491400,4ptp4l0-21swapper/222:08:362
134491400,4ptp4l0-21swapper/221:55:582
134491400,4ptp4l0-21swapper/123:52:541
134491400,4ptp4l0-21swapper/121:50:131
134491400,4ptp4l0-21swapper/023:49:190
134491400,4ptp4l0-21swapper/023:30:290
134491400,4ptp4l0-21swapper/023:05:200
134491400,4ptp4l0-21swapper/021:44:050
134491400,4ptp4l0-21swapper/020:45:010
134491400,4ptp4l0-21swapper/000:30:290
134491400,4ptp4l0-21swapper/000:06:000
134491400,3ptp4l8726-21meminfo20:05:201
134491400,3ptp4l865-21python00:25:251
134491400,3ptp4l29180-21apt-get00:20:020
134491400,3ptp4l24473-21apt-get21:50:113
134491400,3ptp4l21696-21users22:50:263
134491400,2ptp4l25133-21ls20:40:201
14708993933,4cyclictest33-21ksoftirqd/221:22:512
1470699395,8cyclictest0-21swapper/023:56:220
134491390,5ptp4l17266-21df_abs20:25:133
134491390,4ptp4l0-21swapper/323:50:103
134491390,4ptp4l0-21swapper/321:15:193
134491390,4ptp4l0-21swapper/320:01:103
134491390,4ptp4l0-21swapper/223:32:382
134491390,4ptp4l0-21swapper/220:41:122
134491390,4ptp4l0-21swapper/219:40:562
134491390,4ptp4l0-21swapper/219:21:372
134491390,4ptp4l0-21swapper/123:55:181
134491390,4ptp4l0-21swapper/123:30:111
134491390,4ptp4l0-21swapper/122:36:091
134491390,4ptp4l0-21swapper/122:12:481
134491390,4ptp4l0-21swapper/122:12:481
134491390,4ptp4l0-21swapper/100:05:281
134491390,4ptp4l0-21swapper/023:44:280
134491390,4ptp4l0-21swapper/023:15:060
134491390,4ptp4l0-21swapper/021:20:110
134491390,4ptp4l0-21swapper/021:01:090
134491390,4ptp4l0-21swapper/020:35:190
134491390,3ptp4l26975-21iostat20:45:171
134491390,3ptp4l0-21swapper/323:05:143
134491390,3ptp4l0-21swapper/220:48:102
134491390,3ptp4l0-21swapper/200:17:062
134491390,3ptp4l0-21swapper/121:40:191
134491390,2ptp4l550-21strings00:25:210
14709993810,9cyclictest21212-21taskset19:22:373
14707993833,2cyclictest25-21ksoftirqd/122:50:121
14707993832,3cyclictest25-21ksoftirqd/100:10:181
134491380,5ptp4l0-21swapper/122:20:241
134491380,4ptp4l0-21swapper/323:55:043
134491380,4ptp4l0-21swapper/323:37:553
134491380,4ptp4l0-21swapper/321:10:193
134491380,4ptp4l0-21swapper/321:10:193
134491380,4ptp4l0-21swapper/320:45:223
134491380,4ptp4l0-21swapper/220:30:162
134491380,4ptp4l0-21swapper/200:09:202
134491380,4ptp4l0-21swapper/123:25:141
134491380,4ptp4l0-21swapper/122:40:521
134491380,4ptp4l0-21swapper/122:27:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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