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2025-11-30 - 10:54
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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 Sun Nov 30, 2025 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1677121420,5sleep11323099cyclictest22:45:161
1322999709,24cyclictest8267-21awk22:25:220
2847191660,30ptp4l0-21swapper/019:45:250
13229996610,18cyclictest1299-21runrttasks20:37:290
1323299631,32cyclictest1778-21gnome-shell21:22:593
13229996318,14cyclictest23206-21/usr/sbin/munin20:40:190
2847191620,3ptp4l3111-21irqrtprio22:15:211
1323299621,31cyclictest1778-21gnome-shell21:57:583
2847191610,5ptp4l0-21swapper/119:09:211
2847191600,4ptp4l0-21swapper/123:16:231
1322999609,13cyclictest2847191ptp4l22:00:160
2847191590,4ptp4l0-21swapper/120:55:281
2847191590,2ptp4l0-21swapper/220:05:152
1323299591,31cyclictest1778-21gnome-shell23:46:583
2847191580,4ptp4l0-21swapper/222:22:112
2847191580,3ptp4l4129-21/usr/sbin/munin20:00:303
2847191580,3ptp4l0-21swapper/100:15:291
2847191580,3ptp4l0-21swapper/019:10:180
134402580,5sleep09-21ksoftirqd/023:45:200
1323299581,31cyclictest1778-21gnome-shell23:06:583
2847191570,4ptp4l0-21swapper/119:53:461
2847191570,3ptp4l0-21swapper/223:29:352
2847191570,3ptp4l0-21swapper/219:56:252
1322999579,45cyclictest0-21swapper/022:45:180
2847191560,4ptp4l0-21swapper/122:40:521
2847191560,4ptp4l0-21swapper/121:27:301
2847191560,3ptp4l25842-21ls19:35:221
2847191560,3ptp4l0-21swapper/219:34:222
1323299561,32cyclictest1778-21gnome-shell21:43:593
2847191550,4ptp4l0-21swapper/122:02:221
2847191550,3ptp4l0-21swapper/122:20:221
2847191550,3ptp4l0-21swapper/121:22:201
1323299551,36cyclictest1778-21gnome-shell22:53:583
1323299551,31cyclictest1778-21gnome-shell23:04:583
13231995512,16cyclictest5520-21kworker/2:023:57:092
1322999559,16cyclictest26921-21systemctl21:55:270
13229995513,38cyclictest4680-21ls23:25:310
2847191540,4ptp4l0-21swapper/120:52:331
2847191540,3ptp4l0-21swapper/222:25:272
2847191540,3ptp4l0-21swapper/123:35:501
2847191540,3ptp4l0-21swapper/120:49:501
1323299541,31cyclictest1778-21gnome-shell22:29:583
1323299541,29cyclictest13694-21taskset22:38:073
1322999548,6cyclictest21874-21tail19:25:280
13229995412,19cyclictest14332-21/usr/sbin/munin21:30:180
1323299531,37cyclictest1778-21gnome-shell22:33:583
1323299531,37cyclictest1778-21gnome-shell22:33:583
1323299531,37cyclictest1778-21gnome-shell19:34:583
1323299531,31cyclictest1778-21gnome-shell22:17:583
13229995314,11cyclictest31060-21seq00:22:190
13229995311,7cyclictest4587-21hwlatdetect20:00:210
13229995311,39cyclictest0-21swapper/000:10:170
2847191520,4ptp4l0-21swapper/122:12:421
2847191520,4ptp4l0-21swapper/121:58:301
2847191520,4ptp4l0-21swapper/120:13:001
2847191520,4ptp4l0-21swapper/119:31:181
1323299521,37cyclictest1778-21gnome-shell20:56:593
1323299521,31cyclictest1778-21gnome-shell21:45:583
2847191510,10ptp4l11735-21/usr/sbin/munin19:05:200
1323299510,18cyclictest20488-21df19:25:153
1322999519,38cyclictest849-21grep21:00:260
2847191500,4ptp4l0-21swapper/119:58:201
1323299501,34cyclictest1778-21gnome-shell00:23:593
1323299500,29cyclictest1217-21taskset19:51:463
1323199502,46cyclictest0-21swapper/223:05:102
13229995015,32cyclictest10249-21ntp_states21:20:250
13229995014,33cyclictest9758-21users23:35:280
1323299491,33cyclictest1778-21gnome-shell22:47:583
1323299481,32cyclictest1778-21gnome-shell00:27:593
1323199483,43cyclictest0-21swapper/220:26:092
1322999487,11cyclictest7401-21cut21:15:190
2847191470,4ptp4l0-21swapper/119:26:091
2847191470,4ptp4l0-21swapper/100:09:131
2847191470,4ptp4l0-21swapper/100:09:131
2847191470,3ptp4l0-21swapper/122:58:251
2847191470,12ptp4l0-21swapper/123:40:151
1323299471,31cyclictest1778-21gnome-shell21:16:593
13229994712,10cyclictest28291-21taskset23:08:530
2849491460,10getstats0-21swapper/222:05:182
2847191460,4ptp4l0-21swapper/223:36:132
2847191460,4ptp4l0-21swapper/119:23:341
2847191460,11ptp4l0-21swapper/123:53:161
2847191460,10ptp4l0-21swapper/220:43:312
13231994619,25cyclictest17728-21kworker/2:119:40:292
1322999469,7cyclictest25101-21df19:35:170
1322999469,35cyclictest0-21swapper/019:20:170
13229994612,10cyclictest26868-21taskset00:15:110
13229994611,32cyclictest0-21swapper/021:05:280
2847191450,9ptp4l0-21swapper/219:21:432
2847191450,6ptp4l0-21swapper/221:19:432
2847191450,5ptp4l24117-21diskstats23:00:170
2847191450,4ptp4l0-21swapper/122:38:151
2847191450,4ptp4l0-21swapper/120:41:541
2847191450,3ptp4l0-21swapper/121:34:071
2847191450,3ptp4l0-21swapper/120:36:421
2847191450,3ptp4l0-21swapper/100:04:271
2847191450,10ptp4l0-21swapper/221:21:402
1323199450,43cyclictest0-21swapper/221:40:292
1322999459,8cyclictest1087-21meminfo22:10:200
1322999457,13cyclictest23926-21sshd00:07:480
1322999457,13cyclictest23926-21sshd00:07:480
13229994517,25cyclictest18869-21df21:40:160
13229994513,10cyclictest23252-21runrttasks22:56:380
13229994512,28cyclictest6426-21ls22:20:290
13229994511,7cyclictest2772-21memory19:55:220
2847191440,8ptp4l0-21swapper/221:01:372
2847191440,4ptp4l11434-21apt-get21:25:133
2847191440,4ptp4l0-21swapper/122:52:031
2847191440,3ptp4l18947-21apt-get22:50:140
2847191440,3ptp4l1323199cyclictest21:39:332
13229994414,27cyclictest12092-21df_inode22:35:150
13229994412,9cyclictest5861-21taskset00:37:220
13229994412,9cyclictest5861-21taskset00:37:220
2847191430,9ptp4l0-21swapper/222:04:142
2847191430,9ptp4l0-21swapper/221:56:172
2847191430,5ptp4l22000-21ls21:45:230
2847191430,5ptp4l0-21swapper/221:45:292
2847191430,4ptp4l6622-21irqstats23:30:180
2847191430,4ptp4l1757-21irqstats23:20:210
2847191430,4ptp4l15720-21apt-get20:25:121
2847191430,4ptp4l1180-21diskstats23:20:163
2847191430,4ptp4l0-21swapper/120:32:061
2847191430,4ptp4l0-21swapper/120:17:241
2847191430,3ptp4l16061-21apt-get21:35:141
1323299432,28cyclictest6684-21seq22:22:203
1323299430,29cyclictest9908-21taskset23:37:123
13229994314,26cyclictest15615-21iostat23:50:190
2847191420,9ptp4l0-21swapper/223:16:372
2847191420,8ptp4l0-21swapper/300:13:273
2847191420,5ptp4l10325-21irqstats22:30:191
2847191420,5ptp4l10325-21irqstats22:30:191
2847191420,5ptp4l0-21swapper/320:50:203
2847191420,5ptp4l0-21swapper/220:15:142
2847191420,5ptp4l0-21swapper/200:10:502
2847191420,5ptp4l0-21swapper/100:20:131
2847191420,5ptp4l0-21swapper/023:40:320
2847191420,5ptp4l0-21swapper/000:01:170
2847191420,4ptp4l5444-21meminfo21:10:230
2847191420,4ptp4l5308-21apt-get23:30:023
2847191420,4ptp4l32191-21hddtemp_smartct00:25:191
2847191420,4ptp4l27223-21apt-get19:40:150
2847191420,4ptp4l0-21swapper/323:55:233
2847191420,4ptp4l0-21swapper/223:40:312
2847191420,4ptp4l0-21swapper/222:45:262
2847191420,4ptp4l0-21swapper/200:25:022
2847191420,4ptp4l0-21swapper/021:50:290
2847191420,3ptp4l8113-21meminfo22:25:191
2847191420,3ptp4l29975-21df_inode20:55:160
2847191420,3ptp4l25039-21apt-get20:45:150
2847191420,3ptp4l17352-21apt-get23:55:130
2847191420,3ptp4l0-21swapper/122:08:531
1323299420,28cyclictest21703-21taskset00:03:523
13229994213,8cyclictest7032-21iostat_ios20:05:210
2847191410,6ptp4l0-21swapper/119:47:121
2847191410,5ptp4l14020-21cat22:40:002
2847191410,5ptp4l0-21swapper/000:30:150
2847191410,4ptp4l23605-21diskstats21:50:171
2847191410,4ptp4l23021-21hddtemp_smartct19:30:190
2847191410,4ptp4l16146-21iostat19:15:200
2847191410,4ptp4l15785-21df19:15:181
2847191410,4ptp4l1323299cyclictest00:05:283
2847191410,4ptp4l1323299cyclictest00:05:283
2847191410,4ptp4l0-21swapper/321:05:323
2847191410,4ptp4l0-21swapper/321:00:243
2847191410,4ptp4l0-21swapper/320:35:243
2847191410,4ptp4l0-21swapper/320:15:123
2847191410,4ptp4l0-21swapper/319:55:223
2847191410,4ptp4l0-21swapper/223:30:032
2847191410,4ptp4l0-21swapper/123:05:551
2847191410,4ptp4l0-21swapper/121:11:561
2847191410,4ptp4l0-21swapper/121:01:121
2847191410,4ptp4l0-21swapper/120:09:081
2847191410,4ptp4l0-21swapper/022:15:300
2847191410,3ptp4l17150-21ls20:25:270
2847191410,3ptp4l11150-21users22:30:290
2847191410,3ptp4l11150-21users22:30:290
2847191410,3ptp4l0-21swapper/223:13:432
2847191410,3ptp4l0-21swapper/200:00:212
2847191410,3ptp4l0-21swapper/019:50:200
13232994110,30cyclictest0-21swapper/320:30:493
1323299410,27cyclictest1901-21taskset22:10:393
1322999418,9cyclictest0-21swapper/022:41:170
1322999418,11cyclictest2847191ptp4l23:10:200
2847191400,5ptp4l7952-21open_inodes21:15:261
2847191400,5ptp4l0-21swapper/221:26:372
2847191400,5ptp4l0-21swapper/220:03:072
2847191400,5ptp4l0-21swapper/200:30:172
2847191400,4ptp4l1648-21/usr/sbin/munin00:30:273
2847191400,4ptp4l15706-21/usr/sbin/munin20:25:223
2847191400,4ptp4l0-21swapper/323:25:223
2847191400,4ptp4l0-21swapper/323:10:213
2847191400,4ptp4l0-21swapper/322:55:273
2847191400,4ptp4l0-21swapper/322:42:093
2847191400,4ptp4l0-21swapper/322:05:383
2847191400,4ptp4l0-21swapper/321:35:563
2847191400,4ptp4l0-21swapper/319:49:303
2847191400,4ptp4l0-21swapper/319:41:043
2847191400,4ptp4l0-21swapper/319:35:223
2847191400,4ptp4l0-21swapper/319:14:173
2847191400,4ptp4l0-21swapper/300:15:233
2847191400,4ptp4l0-21swapper/223:45:332
2847191400,4ptp4l0-21swapper/223:00:112
2847191400,4ptp4l0-21swapper/222:52:092
2847191400,4ptp4l0-21swapper/222:30:312
2847191400,4ptp4l0-21swapper/222:30:312
2847191400,4ptp4l0-21swapper/222:18:132
2847191400,4ptp4l0-21swapper/222:11:052
2847191400,4ptp4l0-21swapper/221:53:532
2847191400,4ptp4l0-21swapper/221:31:312
2847191400,4ptp4l0-21swapper/220:48:262
2847191400,4ptp4l0-21swapper/220:39:212
2847191400,4ptp4l0-21swapper/220:33:342
2847191400,4ptp4l0-21swapper/220:20:162
2847191400,4ptp4l0-21swapper/220:10:202
2847191400,4ptp4l0-21swapper/219:50:552
2847191400,4ptp4l0-21swapper/219:45:262
2847191400,4ptp4l0-21swapper/219:25:062
2847191400,4ptp4l0-21swapper/219:15:302
2847191400,4ptp4l0-21swapper/219:10:382
2847191400,4ptp4l0-21swapper/200:22:092
2847191400,4ptp4l0-21swapper/200:05:242
2847191400,4ptp4l0-21swapper/200:05:242
2847191400,4ptp4l0-21swapper/123:21:311
2847191400,4ptp4l0-21swapper/100:31:141
2847191400,4ptp4l0-21swapper/100:10:191
2847191400,4ptp4l0-21swapper/021:35:230
2847191400,4ptp4l0-21swapper/020:20:190
2847191400,3ptp4l6725-21meminfo23:30:191
2847191400,3ptp4l13471-21df19:10:151
2847191400,3ptp4l0-21swapper/323:50:253
2847191400,3ptp4l0-21swapper/319:22:483
2847191400,3ptp4l0-21swapper/020:50:000
2847191400,2ptp4l25944-21strings19:35:252
13229994014,23cyclictest9072-21df_inode20:10:180
2847191390,6ptp4l0-21swapper/223:50:062
2847191390,5ptp4l0-21swapper/123:25:151
2847191390,4ptp4l0-21swapper/323:43:013
2847191390,4ptp4l0-21swapper/323:15:193
2847191390,4ptp4l0-21swapper/322:00:193
2847191390,4ptp4l0-21swapper/321:53:373
2847191390,4ptp4l0-21swapper/320:49:023
2847191390,4ptp4l0-21swapper/320:40:103
2847191390,4ptp4l0-21swapper/320:21:533
2847191390,4ptp4l0-21swapper/222:59:382
2847191390,4ptp4l0-21swapper/222:43:542
2847191390,4ptp4l0-21swapper/221:13:462
2847191390,4ptp4l0-21swapper/221:05:022
2847191390,4ptp4l0-21swapper/220:57:582
2847191390,4ptp4l0-21swapper/220:50:152
2847191390,4ptp4l0-21swapper/200:35:562
2847191390,4ptp4l0-21swapper/200:35:562
2847191390,4ptp4l0-21swapper/200:15:152
2847191390,4ptp4l0-21swapper/123:56:531
2847191390,4ptp4l0-21swapper/123:45:171
2847191390,4ptp4l0-21swapper/123:10:201
2847191390,4ptp4l0-21swapper/123:01:361
2847191390,4ptp4l0-21swapper/121:45:181
2847191390,4ptp4l0-21swapper/121:40:171
2847191390,4ptp4l0-21swapper/121:08:561
2847191390,4ptp4l0-21swapper/120:20:221
2847191390,4ptp4l0-21swapper/120:03:571
2847191390,4ptp4l0-21swapper/119:40:211
2847191390,4ptp4l0-21swapper/100:35:071
2847191390,4ptp4l0-21swapper/100:35:071
2847191390,4ptp4l0-21swapper/023:15:260
2847191390,4ptp4l0-21swapper/022:05:290
2847191390,4ptp4l0-21swapper/021:27:530
2847191390,4ptp4l0-21swapper/020:18:090
2847191390,4ptp4l0-21swapper/000:25:030
2847191390,3ptp4l7036-21ps20:05:213
2847191390,3ptp4l0-21swapper/319:15:093
2847191390,3ptp4l0-21swapper/223:22:012
2847191390,3ptp4l0-21swapper/020:30:270
2847191380,4ptp4l0-21swapper/321:11:203
2847191380,4ptp4l0-21swapper/320:11:303
2847191370,4ptp4l0-21swapper/321:34:553
2847191370,3ptp4l0-21swapper/300:38:493
2847191370,3ptp4l0-21swapper/300:38:493
2849691245,11phc2sys0-21swapper/319:05:153
127072213,4sleep20-21swapper/219:07:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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