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2025-12-10 - 13:55
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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 Wed Dec 10, 2025 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2988221700,7sleep21774799cyclictest19:35:172
2988221700,7sleep21774799cyclictest19:35:172
2779321430,3sleep01774599cyclictest22:55:300
2847191680,3ptp4l0-21swapper/120:05:261
85892670,6sleep18592-21irqrtprio23:25:191
2847191660,3ptp4l0-21swapper/123:50:181
1774599660,28cyclictest8479-21runrttasks00:34:470
2847191650,4ptp4l0-21swapper/120:40:141
2847191650,26ptp4l18357-21iostat_ios19:10:181
1774599650,29cyclictest11268-21runrttasks21:12:520
1774599650,22cyclictest16199-21/usr/sbin/munin23:40:250
1774599641,28cyclictest10578-21seq00:37:120
1774599640,27cyclictest29014-21seq00:09:320
2847191620,4ptp4l0-21swapper/220:55:242
2847191620,3ptp4l16127-21ntp_states23:40:241
1774599621,32cyclictest1778-21gnome-shell19:12:580
1774599621,31cyclictest1778-21gnome-shell19:28:580
2847191610,4ptp4l0-21swapper/223:04:532
2847191610,4ptp4l0-21swapper/100:32:261
2847191610,4ptp4l0-21swapper/100:05:291
1774599611,32cyclictest1778-21gnome-shell23:53:590
1774599611,31cyclictest1778-21gnome-shell22:43:590
1774599611,26cyclictest1778-21gnome-shell23:35:590
1774599611,26cyclictest1778-21gnome-shell23:15:590
1774599611,25cyclictest1778-21gnome-shell19:32:580
1774599611,25cyclictest1778-21gnome-shell19:18:580
1774599610,28cyclictest26967-21seq20:37:540
1774599610,26cyclictest1088-21seq00:17:490
1774599610,25cyclictest7008-21seq22:13:060
2847191600,5ptp4l0-21swapper/219:07:392
2847191600,4ptp4l0-21swapper/220:17:502
2847191600,4ptp4l0-21swapper/200:18:232
2847191600,4ptp4l0-21swapper/121:45:161
2847191600,3ptp4l0-21swapper/123:09:101
2847191600,3ptp4l0-21swapper/100:10:261
1774599602,24cyclictest0-21swapper/019:35:140
1774599602,24cyclictest0-21swapper/019:35:140
1774599602,22cyclictest0-21swapper/021:00:190
1774599601,26cyclictest1778-21gnome-shell23:31:590
1774599601,26cyclictest1778-21gnome-shell22:37:590
1774599601,25cyclictest1778-21gnome-shell22:47:590
1774599601,24cyclictest4150-21seq20:55:550
1774599600,27cyclictest9421-21taskset22:19:230
1774599600,27cyclictest6075-21seq19:53:010
1774599600,25cyclictest16062-21runrttasks21:24:070
1774599600,24cyclictest12661-21missed_timers21:15:220
1774599600,24cyclictest12661-21missed_timers21:15:220
1774599600,20cyclictest6062-21fschecks_count23:20:170
1774599600,20cyclictest6062-21fschecks_count23:20:170
2847191590,3ptp4l0-21swapper/200:21:072
1774599591,31cyclictest2271-21seq22:01:420
1774599591,30cyclictest1778-21gnome-shell22:27:590
1774599591,28cyclictest17674-21taskset20:17:350
1774599591,27cyclictest1778-21gnome-shell23:05:590
1774599591,26cyclictest1778-21gnome-shell23:01:590
1774599591,25cyclictest207-21systemd-journal21:39:410
1774599591,24cyclictest15351-21seq20:13:120
1774599590,30cyclictest20494-21runrttasks21:31:460
1774599590,26cyclictest9100-21seq21:09:430
1774599590,26cyclictest22270-21taskset20:26:550
1774599590,25cyclictest31986-21seq20:49:570
1774599590,25cyclictest31986-21seq20:49:570
2847191580,4ptp4l0-21swapper/220:23:562
2847191580,4ptp4l0-21swapper/121:28:141
2847191580,3ptp4l0-21swapper/222:47:422
2847191580,3ptp4l0-21swapper/219:49:402
2847191580,3ptp4l0-21swapper/120:57:451
1774599581,30cyclictest32443-21seq21:58:370
1774599580,32cyclictest19187-21sshd23:47:380
1774599580,28cyclictest3721-21taskset19:47:260
1774599580,28cyclictest1935-21seq20:54:550
1774599580,26cyclictest4762-21seq22:08:520
2847191570,4ptp4l0-21swapper/321:35:523
2847191570,3ptp4l0-21swapper/123:15:151
2847191570,3ptp4l0-21swapper/120:50:211
2847191570,3ptp4l0-21swapper/119:30:231
2847191570,15ptp4l0-21swapper/122:10:141
2847191570,13ptp4l0-21swapper/123:55:181
1774599571,30cyclictest1778-21gnome-shell22:31:590
1774599571,26cyclictest8204-21taskset19:55:480
1774599570,29cyclictest25381-21seq21:44:410
1774599570,25cyclictest1241-21seq19:41:210
2847191560,4ptp4l0-21swapper/100:28:101
2847191560,3ptp4l0-21swapper/123:01:321
2847191560,3ptp4l0-21swapper/122:41:241
2847191560,3ptp4l0-21swapper/023:10:200
1774599560,32cyclictest18267-21seq21:27:400
1774599560,31cyclictest207-21systemd-journal00:11:400
1774599560,27cyclictest30191-21seq21:54:200
1774599560,26cyclictest29270-21taskset20:42:300
1774599560,22cyclictest26087-21cat22:54:590
2847191550,9ptp4l0-21swapper/119:45:181
2847191550,2ptp4l0-21swapper/120:45:261
2847191550,2ptp4l0-21swapper/120:45:261
1774599552,20cyclictest0-21swapper/020:32:400
1774599550,27cyclictest23973-21seq23:59:450
124242550,4sleep31774899cyclictest21:15:203
124242550,4sleep31774899cyclictest21:15:203
2847191540,4ptp4l0-21swapper/121:10:161
2847191540,11ptp4l15977-21iostat19:05:191
2847191540,11ptp4l15660-21df_inode19:05:160
2847191540,11ptp4l0-21swapper/121:20:141
17748995423,4cyclictest41-21ksoftirqd/320:25:303
1774599540,30cyclictest9695-21seq23:25:350
1774599540,28cyclictest10711-21taskset20:02:550
1774599540,26cyclictest27603-21taskset21:45:570
1774599540,24cyclictest12868-21runrttasks20:06:050
2847191530,4ptp4l0-21swapper/100:22:351
2847191530,3ptp4l0-21swapper/122:55:191
2847191530,3ptp4l0-21swapper/119:18:081
1774599532,21cyclictest0-21swapper/000:23:120
1774599532,20cyclictest0-21swapper/020:23:100
2847191520,3ptp4l0-21swapper/000:25:250
2847191520,11ptp4l0-21swapper/123:37:311
323172510,4sleep132321-21irqrtprio00:15:181
17748995114,8cyclictest41-21ksoftirqd/319:20:003
1774799511,3cyclictest1212-21cut22:00:202
2847191500,5ptp4l0-21swapper/100:38:321
1774599500,16cyclictest2847191ptp4l00:04:580
17748994913,8cyclictest41-21ksoftirqd/300:30:293
17748994815,7cyclictest41-21ksoftirqd/323:20:013
17748994814,10cyclictest41-21ksoftirqd/323:55:193
2847191470,5ptp4l0-21swapper/321:07:563
2847191470,3ptp4l0-21swapper/219:22:202
2847191470,10ptp4l0-21swapper/119:53:181
1774599470,18cyclictest2847191ptp4l22:20:160
17748994615,3cyclictest41-21ksoftirqd/322:00:013
17748994613,4cyclictest41-21ksoftirqd/321:35:003
2847191450,9ptp4l0-21swapper/219:57:322
2847191450,9ptp4l0-21swapper/219:41:022
2847191450,4ptp4l0-21swapper/223:11:122
2847191450,4ptp4l0-21swapper/123:34:551
2847191450,3ptp4l0-21swapper/219:15:062
2847191450,3ptp4l0-21swapper/119:20:161
2847191450,10ptp4l0-21swapper/223:55:592
2847191450,10ptp4l0-21swapper/222:27:262
17748994518,4cyclictest41-21ksoftirqd/320:10:253
17748994517,7cyclictest41-21ksoftirqd/322:35:013
17748994517,3cyclictest41-21ksoftirqd/323:40:283
17748994515,4cyclictest41-21ksoftirqd/321:40:133
17748994512,7cyclictest41-21ksoftirqd/320:35:003
1774799451,4cyclictest5420-21diskstats22:10:152
1774599451,27cyclictest24464-21runrttasks19:24:480
2847191440,9ptp4l0-21swapper/220:14:422
2847191440,4ptp4l0-21swapper/123:22:031
2847191440,4ptp4l0-21swapper/123:22:031
2847191440,4ptp4l0-21swapper/122:01:261
2847191440,10ptp4l0-21swapper/221:55:442
1774899447,8cyclictest41-21ksoftirqd/322:25:013
17748994417,7cyclictest41-21ksoftirqd/320:20:163
17748994414,8cyclictest41-21ksoftirqd/319:30:003
2849491430,10getstats0-21swapper/323:13:303
2847191430,9ptp4l0-21swapper/222:54:192
2847191430,4ptp4l0-21swapper/300:18:253
2847191430,4ptp4l0-21swapper/123:11:481
2847191430,4ptp4l0-21swapper/120:39:351
2847191430,10ptp4l0-21swapper/221:35:132
1774899432,2cyclictest2849491getstats20:05:263
17748994313,6cyclictest41-21ksoftirqd/300:25:013
17748994313,4cyclictest41-21ksoftirqd/320:44:423
17748994311,5cyclictest41-21ksoftirqd/322:50:003
17748994311,4cyclictest41-21ksoftirqd/321:30:013
17748994310,7cyclictest41-21ksoftirqd/319:50:003
2849491420,10getstats0-21swapper/320:37:583
2847191420,5ptp4l31603-21/usr/sbin/munin21:55:241
2847191420,4ptp4l5195-21hddtemp_smartct21:00:181
2847191420,4ptp4l24481-21iostat_ios22:50:181
2847191420,4ptp4l0-21swapper/119:28:581
2847191420,4ptp4l0-21swapper/100:02:561
2847191420,3ptp4l5208-21apt-get23:20:032
2847191420,3ptp4l5208-21apt-get23:20:032
2847191420,3ptp4l30385-21ls19:35:231
2847191420,3ptp4l30385-21ls19:35:231
2847191420,3ptp4l23203-21hddtemp_smartct20:30:161
2847191420,3ptp4l22144-21ntp_states21:35:251
1774899428,10cyclictest41-21ksoftirqd/323:50:013
1774899427,9cyclictest41-21ksoftirqd/322:25:163
17748994215,3cyclictest41-21ksoftirqd/322:10:133
17748994214,8cyclictest41-21ksoftirqd/322:10:003
17748994214,10cyclictest41-21ksoftirqd/322:20:003
17748994210,6cyclictest41-21ksoftirqd/319:50:193
2849491410,9getstats0-21swapper/322:03:213
2849491410,10getstats0-21swapper/320:54:033
2847191410,9ptp4l0-21swapper/221:44:582
2847191410,9ptp4l0-21swapper/221:01:482
2847191410,6ptp4l0-21swapper/223:45:112
2847191410,5ptp4l8635-21ps22:15:241
2847191410,5ptp4l0-21swapper/319:40:123
2847191410,5ptp4l0-21swapper/319:07:343
2847191410,5ptp4l0-21swapper/223:34:262
2847191410,5ptp4l0-21swapper/223:15:122
2847191410,5ptp4l0-21swapper/219:51:582
2847191410,4ptp4l26083-21df21:45:143
2847191410,4ptp4l12001-21df_inode21:15:161
2847191410,4ptp4l12001-21df_inode21:15:161
2847191410,4ptp4l0-21swapper/323:20:183
2847191410,4ptp4l0-21swapper/323:20:183
2847191410,4ptp4l0-21swapper/221:18:342
2847191410,4ptp4l0-21swapper/221:18:342
2847191410,4ptp4l0-21swapper/220:06:292
2847191410,4ptp4l0-21swapper/219:10:382
2847191410,4ptp4l0-21swapper/121:30:441
2847191410,4ptp4l0-21swapper/121:07:331
2847191410,4ptp4l0-21swapper/120:02:141
2847191410,3ptp4l7066-21apt-get21:05:132
2847191410,3ptp4l6923-21hddtemp_smartct19:55:161
2847191410,3ptp4l4133-21apt-get00:25:142
2847191410,3ptp4l24308-21memory21:40:201
1774899418,4cyclictest41-21ksoftirqd/300:10:003
17748994117,7cyclictest41-21ksoftirqd/323:50:193
17748994116,8cyclictest41-21ksoftirqd/300:35:253
17748994114,3cyclictest41-21ksoftirqd/322:50:193
17748994113,4cyclictest41-21ksoftirqd/322:55:303
17748994112,8cyclictest41-21ksoftirqd/323:30:243
17748994112,8cyclictest41-21ksoftirqd/319:10:253
17748994110,7cyclictest41-21ksoftirqd/319:35:153
17748994110,7cyclictest41-21ksoftirqd/319:35:153
2847191400,5ptp4l0-21swapper/223:54:112
2847191400,5ptp4l0-21swapper/223:07:142
2847191400,5ptp4l0-21swapper/222:56:462
2847191400,4ptp4l0-21swapper/323:05:303
2847191400,4ptp4l0-21swapper/323:04:303
2847191400,4ptp4l0-21swapper/322:40:143
2847191400,4ptp4l0-21swapper/321:50:123
2847191400,4ptp4l0-21swapper/320:00:063
2847191400,4ptp4l0-21swapper/319:33:213
2847191400,4ptp4l0-21swapper/300:11:163
2847191400,4ptp4l0-21swapper/300:04:373
2847191400,4ptp4l0-21swapper/223:42:142
2847191400,4ptp4l0-21swapper/222:41:312
2847191400,4ptp4l0-21swapper/221:46:142
2847191400,4ptp4l0-21swapper/221:27:522
2847191400,4ptp4l0-21swapper/221:20:562
2847191400,4ptp4l0-21swapper/220:50:062
2847191400,4ptp4l0-21swapper/220:45:462
2847191400,4ptp4l0-21swapper/220:45:462
2847191400,4ptp4l0-21swapper/220:02:552
2847191400,4ptp4l0-21swapper/219:32:132
2847191400,4ptp4l0-21swapper/219:27:282
2847191400,4ptp4l0-21swapper/200:32:282
2847191400,4ptp4l0-21swapper/200:11:392
2847191400,4ptp4l0-21swapper/200:07:542
2847191400,4ptp4l0-21swapper/200:01:282
2847191400,4ptp4l0-21swapper/123:45:081
2847191400,4ptp4l0-21swapper/122:45:161
2847191400,4ptp4l0-21swapper/122:35:041
2847191400,4ptp4l0-21swapper/122:30:301
2847191400,4ptp4l0-21swapper/122:05:241
2847191400,4ptp4l0-21swapper/121:51:191
2847191400,4ptp4l0-21swapper/120:27:311
2847191400,4ptp4l0-21swapper/120:20:161
2847191400,4ptp4l0-21swapper/120:14:521
2847191400,4ptp4l0-21swapper/119:43:541
2847191400,3ptp4l22748-21/usr/sbin/munin20:30:192
2847191400,3ptp4l0-21swapper/220:25:382
1774899404,10cyclictest41-21ksoftirqd/300:25:223
17748994035,3cyclictest41-21ksoftirqd/320:20:003
17748994013,5cyclictest41-21ksoftirqd/321:20:193
17748994011,6cyclictest41-21ksoftirqd/320:45:213
17748994011,6cyclictest41-21ksoftirqd/320:45:203
17748994011,4cyclictest41-21ksoftirqd/319:20:153
1774799404,22cyclictest0-21swapper/222:20:252
2847191390,4ptp4l0-21swapper/323:25:413
2847191390,4ptp4l0-21swapper/321:00:363
2847191390,4ptp4l0-21swapper/319:59:193
2847191390,4ptp4l0-21swapper/223:36:042
2847191390,4ptp4l0-21swapper/223:26:042
2847191390,4ptp4l0-21swapper/222:35:492
2847191390,4ptp4l0-21swapper/222:30:562
2847191390,4ptp4l0-21swapper/222:09:422
2847191390,4ptp4l0-21swapper/221:31:592
2847191390,4ptp4l0-21swapper/221:11:022
2847191390,4ptp4l0-21swapper/220:40:042
2847191390,4ptp4l0-21swapper/200:37:142
2847191390,4ptp4l0-21swapper/122:30:001
2847191390,4ptp4l0-21swapper/120:19:581
2847191390,3ptp4l0-21swapper/220:38:322
17748993923,4cyclictest41-21ksoftirqd/322:35:023
17748993912,7cyclictest41-21ksoftirqd/323:35:233
2847191380,4ptp4l0-21swapper/222:19:462
2847191380,4ptp4l0-21swapper/221:53:022
2847191380,4ptp4l0-21swapper/122:20:121
1774899387,6cyclictest41-21ksoftirqd/320:55:213
17748993810,9cyclictest41-21ksoftirqd/321:10:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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