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2025-12-11 - 09:52
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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 Dec 11, 2025 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249242820,5sleep30-21swapper/319:05:233
2847191680,4ptp4l0-21swapper/321:57:343
2847191670,4ptp4l0-21swapper/122:45:271
2847191620,17ptp4l8810-21apt-get22:00:143
289832610,3sleep20-21swapper/219:15:172
2847191610,4ptp4l0-21swapper/119:08:591
2847191610,3ptp4l0-21swapper/319:56:033
2601199617,11cyclictest2398-21if_err_enp1s021:45:142
2847191590,4ptp4l0-21swapper/323:52:033
2847191590,4ptp4l0-21swapper/221:12:252
2601199599,9cyclictest28711-21idleruntime-cro20:25:002
2601199598,10cyclictest28327-21cut22:40:182
2601199595,12cyclictest21189-21cat20:05:282
2847191580,4ptp4l0-21swapper/321:32:233
2847191580,4ptp4l0-21swapper/319:20:413
2847191580,4ptp4l0-21swapper/200:20:192
2847191580,3ptp4l0-21swapper/200:39:492
2847191570,4ptp4l0-21swapper/321:37:123
2847191570,3ptp4l0-21swapper/321:26:043
2847191570,3ptp4l0-21swapper/320:00:263
2601199578,10cyclictest10689-21df_abs19:45:182
241702570,3sleep00-21swapper/022:30:240
2847191560,4ptp4l0-21swapper/323:40:423
2847191560,4ptp4l0-21swapper/322:05:073
2847191560,4ptp4l0-21swapper/300:30:233
2847191560,4ptp4l0-21swapper/222:45:082
2847191560,4ptp4l0-21swapper/222:25:222
2847191560,3ptp4l0-21swapper/220:10:232
2601199569,15cyclictest6013-21date20:45:012
2601199566,15cyclictest1795-21llvmpipe-220:50:592
2847191550,5ptp4l0-21swapper/319:25:133
2847191550,4ptp4l0-21swapper/319:41:133
2847191550,3ptp4l0-21swapper/320:10:453
2847191550,3ptp4l0-21swapper/319:50:113
2847191550,3ptp4l0-21swapper/319:48:143
2847191550,3ptp4l0-21swapper/319:35:033
2601199557,15cyclictest19955-21systemctl23:30:242
2601199553,15cyclictest0-21swapper/221:40:192
26011995512,40cyclictest2134-21kworker/2:121:55:282
2847191540,4ptp4l0-21swapper/323:16:493
2847191540,4ptp4l0-21swapper/321:11:143
2847191540,4ptp4l0-21swapper/319:19:113
2847191540,3ptp4l0-21swapper/321:10:003
2847191540,3ptp4l0-21swapper/320:23:023
2847191540,3ptp4l0-21swapper/222:20:312
2601199546,10cyclictest0-21swapper/200:25:292
2847191530,4ptp4l0-21swapper/322:38:013
2847191530,4ptp4l0-21swapper/300:12:003
2847191530,3ptp4l0-21swapper/322:40:193
2847191530,3ptp4l0-21swapper/300:37:093
2847191530,3ptp4l0-21swapper/300:19:133
2847191530,1ptp4l0-21swapper/221:09:042
2601199539,9cyclictest9491-21sed00:15:292
2847191520,4ptp4l0-21swapper/320:57:323
2847191520,4ptp4l0-21swapper/320:36:253
2847191520,4ptp4l0-21swapper/320:36:253
2847191520,4ptp4l0-21swapper/122:44:321
2847191520,4ptp4l0-21swapper/020:35:260
2847191520,4ptp4l0-21swapper/020:35:260
2847191520,11ptp4l0-21swapper/323:38:123
2601199529,10cyclictest25678-21cat20:15:272
2601199524,10cyclictest3844-21switchtime22:55:302
2601199523,11cyclictest8189-21ntp_states23:05:252
2847191510,3ptp4l0-21swapper/322:56:433
2847191510,3ptp4l0-21swapper/320:25:323
2601199517,15cyclictest3507-21sed19:30:152
2601199516,11cyclictest9826-21cat22:00:232
2601199514,11cyclictest17797-21hddtemp_smartct20:00:192
2601199513,16cyclictest207-21systemd-journal21:50:232
2847191500,4ptp4l0-21swapper/322:13:383
2847191500,3ptp4l0-21swapper/321:49:593
2847191500,14ptp4l0-21swapper/122:55:211
2847191500,10ptp4l24607-21ls19:05:190
2601199506,11cyclictest16998-21sed00:35:012
2601199505,9cyclictest0-21swapper/222:10:012
2847191490,4ptp4l0-21swapper/323:28:073
2847191490,4ptp4l0-21swapper/322:25:533
2847191490,4ptp4l0-21swapper/319:34:413
2847191490,3ptp4l0-21swapper/323:45:403
2601199496,11cyclictest23192-21cut21:20:212
2601199494,15cyclictest25564-21/usr/sbin/munin23:45:172
2601199492,11cyclictest26138-21cat22:35:202
2847191480,4ptp4l0-21swapper/323:09:203
2847191480,4ptp4l0-21swapper/023:03:180
2847191470,8ptp4l0-21swapper/021:40:140
2847191470,4ptp4l0-21swapper/119:45:031
2847191470,10ptp4l0-21swapper/022:21:440
2601199475,10cyclictest6333-21irqrtprio19:35:182
39962460,4sleep10-21swapper/120:40:131
2847191460,5ptp4l0-21swapper/322:31:473
2847191460,4ptp4l0-21swapper/300:21:313
2847191460,4ptp4l0-21swapper/220:25:152
2847191460,3ptp4l0-21swapper/020:30:360
2847191460,11ptp4l7177-21cat20:45:222
2847191460,10ptp4l0-21swapper/321:21:143
2601199465,8cyclictest15024-21apt-get19:55:142
2601199464,9cyclictest0-21swapper/219:20:292
2601199460,17cyclictest0-21swapper/221:15:172
2847191450,6ptp4l0-21swapper/220:30:132
2847191450,4ptp4l0-21swapper/320:15:553
2601199455,11cyclictest0-21swapper/200:00:282
2601199452,17cyclictest13999-21/usr/sbin/munin23:20:162
2847191440,4ptp4l0-21swapper/321:44:503
2847191440,4ptp4l0-21swapper/023:28:210
2847191440,3ptp4l0-21swapper/322:23:503
2847191440,3ptp4l0-21swapper/320:46:293
2847191440,11ptp4l0-21swapper/321:16:463
2601199446,7cyclictest12268-21ls20:55:302
2601199444,6cyclictest2849691phc2sys23:25:212
2847191430,9ptp4l9-21ksoftirqd/022:43:070
2847191430,9ptp4l9-21ksoftirqd/020:03:090
2847191430,6ptp4l20261-21/usr/sbin/munin20:05:190
2847191430,4ptp4l24662-21apt-get21:25:142
2847191430,4ptp4l0-21swapper/323:55:013
2847191430,4ptp4l0-21swapper/322:53:163
2847191430,4ptp4l0-21swapper/100:22:201
2847191430,4ptp4l0-21swapper/000:27:420
2847191430,3ptp4l17129-21apt-get00:35:130
2847191430,3ptp4l15741-21apt-get22:15:122
2847191430,3ptp4l0-21swapper/223:15:192
2847191430,10ptp4l0-21swapper/022:29:030
2601199435,7cyclictest6456-21ntp_states00:10:232
26010994329,4cyclictest25-21ksoftirqd/122:28:091
2847191420,9ptp4l0-21swapper/022:19:440
2847191420,5ptp4l10807-21grep23:10:272
2847191420,5ptp4l1074-21irqstats00:00:193
2847191420,4ptp4l16498-21users00:30:300
2847191420,4ptp4l14013-21apt-get23:20:143
2847191420,4ptp4l13434-21apt-get22:10:152
2847191420,4ptp4l0-21swapper/323:11:433
2847191420,4ptp4l0-21swapper/023:45:130
2847191420,4ptp4l0-21swapper/023:21:560
2847191420,4ptp4l0-21swapper/022:45:440
2847191420,4ptp4l0-21swapper/020:12:430
2847191420,4ptp4l0-21swapper/019:14:030
2601199423,6cyclictest2847191ptp4l19:10:142
2847191410,6ptp4l6508-21grep20:45:160
2847191410,5ptp4l6289-21cut19:35:180
2847191410,5ptp4l26379-21/usr/sbin/munin22:35:240
2847191410,5ptp4l0-21swapper/200:05:152
2847191410,5ptp4l0-21swapper/023:35:140
2847191410,4ptp4l8090-21apt-get19:40:142
2847191410,4ptp4l27901-21apt-get23:50:152
2847191410,4ptp4l24033-21users21:20:300
2847191410,4ptp4l22486-21apt-get22:30:022
2847191410,4ptp4l21144-21ntp_states21:15:230
2847191410,4ptp4l0-21swapper/223:00:122
2847191410,4ptp4l0-21swapper/100:26:491
2847191410,4ptp4l0-21swapper/023:59:280
2847191410,4ptp4l0-21swapper/023:18:160
2847191410,4ptp4l0-21swapper/021:02:300
2847191410,4ptp4l0-21swapper/000:05:110
2847191410,4ptp4l0-21swapper/000:00:200
2847191410,3ptp4l4750-21apt-get23:00:113
2847191410,3ptp4l31314-21apt-get20:30:133
2847191410,3ptp4l25514-21irqstats21:25:200
2847191410,3ptp4l0-21swapper/322:46:563
2847191410,3ptp4l0-21swapper/019:27:410
2601199416,7cyclictest1778-21gnome-shell23:59:592
2847191400,5ptp4l9-21ksoftirqd/023:10:260
2847191400,5ptp4l0-21swapper/320:40:033
2847191400,5ptp4l0-21swapper/122:18:071
2847191400,5ptp4l0-21swapper/121:25:231
2847191400,5ptp4l0-21swapper/020:57:330
2847191400,4ptp4l367-21sed22:50:202
2847191400,4ptp4l0-21swapper/322:15:223
2847191400,4ptp4l0-21swapper/321:00:253
2847191400,4ptp4l0-21swapper/119:10:581
2847191400,4ptp4l0-21swapper/100:00:171
2847191400,4ptp4l0-21swapper/023:30:450
2847191400,4ptp4l0-21swapper/022:11:160
2847191400,4ptp4l0-21swapper/022:08:300
2847191400,4ptp4l0-21swapper/021:56:010
2847191400,4ptp4l0-21swapper/021:49:250
2847191400,4ptp4l0-21swapper/021:35:410
2847191400,4ptp4l0-21swapper/021:33:350
2847191400,4ptp4l0-21swapper/021:05:500
2847191400,4ptp4l0-21swapper/020:50:060
2847191400,4ptp4l0-21swapper/020:27:590
2847191400,4ptp4l0-21swapper/020:20:200
2847191400,4ptp4l0-21swapper/020:16:060
2847191400,4ptp4l0-21swapper/019:41:550
2847191400,4ptp4l0-21swapper/019:22:340
2847191400,4ptp4l0-21swapper/000:16:180
2847191400,4ptp4l0-21swapper/000:10:290
2847191400,3ptp4l8445-21apt-get20:50:123
2847191400,3ptp4l6796-21diskstats21:55:161
2847191400,3ptp4l627-21apt-get19:25:132
2847191400,3ptp4l4914-21users19:30:290
2847191400,3ptp4l32681-21hddtemp_smartct22:50:171
2847191400,3ptp4l2828-21apt-get00:05:153
2847191400,3ptp4l13667-21meminfo19:50:182
2847191400,3ptp4l0-21swapper/323:33:133
2847191400,3ptp4l0-21swapper/022:00:210
2847191400,3ptp4l0-21swapper/020:43:200
2847191400,3ptp4l0-21swapper/019:47:270
2601199408,14cyclictest0-21swapper/221:00:252
2847191390,5ptp4l0-21swapper/019:54:590
2847191390,4ptp4l19305-21cut00:40:001
2847191390,4ptp4l0-21swapper/320:07:013
2847191390,4ptp4l0-21swapper/300:25:223
2847191390,4ptp4l0-21swapper/223:40:422
2847191390,4ptp4l0-21swapper/223:35:242
2847191390,4ptp4l0-21swapper/220:37:212
2847191390,4ptp4l0-21swapper/220:37:212
2847191390,4ptp4l0-21swapper/123:16:461
2847191390,4ptp4l0-21swapper/120:53:251
2847191390,4ptp4l0-21swapper/120:45:231
2847191390,4ptp4l0-21swapper/119:55:161
2847191390,4ptp4l0-21swapper/119:41:591
2847191390,4ptp4l0-21swapper/023:41:380
2847191390,4ptp4l0-21swapper/022:50:100
2847191390,4ptp4l0-21swapper/021:51:190
2847191390,4ptp4l0-21swapper/021:10:350
2847191390,4ptp4l0-21swapper/019:56:090
2847191390,4ptp4l0-21swapper/019:17:190
2847191390,4ptp4l0-21swapper/000:22:410
2847191390,3ptp4l4156-21/usr/sbin/munin21:50:193
2847191390,3ptp4l29563-21apt-get21:35:132
2847191390,3ptp4l26360-21diskstats19:10:163
2847191390,3ptp4l0-21swapper/121:16:441
2601199395,6cyclictest2847191ptp4l21:30:322
2847191380,4ptp4l2722-21timedrift20:35:271
2847191380,4ptp4l2722-21timedrift20:35:271
2847191380,4ptp4l0-21swapper/123:34:301
2847191380,4ptp4l0-21swapper/121:45:591
2847191380,4ptp4l0-21swapper/121:40:161
2847191380,4ptp4l0-21swapper/121:01:431
2847191380,4ptp4l0-21swapper/120:58:071
2847191380,4ptp4l0-21swapper/119:28:091
2847191380,4ptp4l0-21swapper/023:50:300
2847191380,4ptp4l0-21swapper/023:05:300
2847191380,4ptp4l0-21swapper/022:56:300
2847191380,3ptp4l19953-21df_abs20:05:151
2847191380,3ptp4l0-21swapper/123:26:591
2847191380,3ptp4l0-21swapper/122:30:201
2847191380,3ptp4l0-21swapper/121:21:491
2847191380,3ptp4l0-21swapper/120:11:061
2847191380,3ptp4l0-21swapper/119:38:161
2847191380,2ptp4l5324-21iostat23:00:171
2847191370,4ptp4l0-21swapper/121:06:221
2847191370,4ptp4l0-21swapper/100:32:121
2847191370,3ptp4l15308-21mailstats23:20:271
2847191370,3ptp4l0-21swapper/123:41:591
2847191370,3ptp4l0-21swapper/122:07:511
2847191370,3ptp4l0-21swapper/122:04:081
2847191370,3ptp4l0-21swapper/121:31:521
2847191370,3ptp4l0-21swapper/120:16:121
2847191370,2ptp4l0-21swapper/100:09:051
2847191360,4ptp4l0-21swapper/123:37:151
2847191360,4ptp4l0-21swapper/123:12:551
2847191360,4ptp4l0-21swapper/119:24:001
2847191360,3ptp4l29451-21needreboot19:15:221
2847191360,3ptp4l0-21swapper/100:10:141
2847191350,4ptp4l0-21swapper/121:54:121
2847191350,3ptp4l0-21swapper/120:22:261
2847191350,3ptp4l0-21swapper/100:15:031
2847191340,3ptp4l0-21swapper/122:36:581
2847191340,3ptp4l0-21swapper/120:31:511
2847191340,3ptp4l0-21swapper/120:26:181
2847191340,3ptp4l0-21swapper/119:33:531
2847191310,3ptp4l0-21swapper/123:54:281
26010993126,3cyclictest25-21ksoftirqd/119:52:191
2847191300,4ptp4l0-21swapper/121:13:561
26010993025,3cyclictest25-21ksoftirqd/121:35:151
2847191290,3ptp4l0-21swapper/123:47:391
2847191280,4ptp4l0-21swapper/123:09:171
26010992722,3cyclictest25-21ksoftirqd/122:20:261
26010992721,4cyclictest25-21ksoftirqd/122:10:591
2847191250,3ptp4l0-21swapper/120:01:031
26010992519,3cyclictest25-21ksoftirqd/123:55:171
236442235,10sleep20-21swapper/219:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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