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2025-12-07 - 11:33
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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 Sun Dec 07, 2025 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1175621440,6sleep2124299cyclictest23:00:012
130062810,5sleep20-21swapper/221:50:292
2847191640,5ptp4l0-21swapper/223:45:132
124099638,16cyclictest19321-21cat00:25:000
2847191620,3ptp4l19867-21apt-get19:50:143
124099617,17cyclictest17299-21gzip20:50:270
2847191600,4ptp4l0-21swapper/300:11:013
2847191600,3ptp4l0-21swapper/321:18:413
2847191600,3ptp4l0-21swapper/219:40:202
31952590,4sleep30-21swapper/322:40:203
2847191590,3ptp4l0-21swapper/219:20:182
124199594,16cyclictest28098-21/usr/sbin/munin21:15:171
1240995915,8cyclictest1378-21cron20:20:000
1240995915,8cyclictest1378-21cron20:20:000
2847191580,3ptp4l0-21swapper/221:32:292
2847191580,3ptp4l0-21swapper/219:50:512
2847191570,4ptp4l0-21swapper/322:35:183
2847191570,4ptp4l0-21swapper/321:40:043
2847191570,3ptp4l0-21swapper/319:18:093
124099577,11cyclictest24381-21cat00:35:130
1240995710,11cyclictest26631-21seq20:03:070
105012570,3sleep00-21swapper/021:45:250
2847191560,4ptp4l0-21swapper/322:29:383
2847191560,4ptp4l0-21swapper/320:51:383
2847191560,4ptp4l0-21swapper/320:05:083
2847191560,4ptp4l0-21swapper/222:52:292
2847191560,3ptp4l0-21swapper/321:08:083
2847191560,3ptp4l0-21swapper/319:23:183
2847191560,3ptp4l0-21swapper/300:30:283
2847191550,5ptp4l0-21swapper/300:08:433
2847191550,4ptp4l0-21swapper/321:30:183
2847191550,4ptp4l0-21swapper/320:34:303
2847191550,4ptp4l0-21swapper/320:22:003
2847191550,4ptp4l0-21swapper/319:32:543
2847191550,4ptp4l0-21swapper/319:26:033
2847191550,4ptp4l0-21swapper/223:33:032
2847191550,4ptp4l0-21swapper/221:37:502
2847191550,4ptp4l0-21swapper/221:17:142
2847191550,3ptp4l0-21swapper/322:20:553
2847191550,3ptp4l0-21swapper/319:58:593
2847191550,3ptp4l0-21swapper/222:00:032
2847191550,3ptp4l0-21swapper/200:39:462
124199559,16cyclictest29975-21chrt21:20:071
124199559,15cyclictest17202-21chrt19:43:421
124099558,10cyclictest0-21swapper/022:38:360
2847191540,4ptp4l0-21swapper/322:47:203
2847191540,4ptp4l0-21swapper/300:21:593
2847191540,4ptp4l0-21swapper/300:03:483
124199549,12cyclictest32422-21taskset23:43:001
124199548,11cyclictest1299-21runrttasks23:22:371
124199548,11cyclictest1299-21runrttasks21:12:311
124199547,13cyclictest21913-21ntpq22:10:271
124199547,10cyclictest1299-21runrttasks20:39:051
1241995410,11cyclictest21918-21chrt19:54:581
1240995410,12cyclictest26492-21needreboot22:20:220
2847191530,5ptp4l0-21swapper/323:14:363
2847191530,4ptp4l0-21swapper/119:09:231
2847191530,3ptp4l0-21swapper/322:17:043
2847191530,3ptp4l0-21swapper/320:28:313
258652530,4sleep2124299cyclictest21:10:202
124199536,12cyclictest19269-21ls00:25:001
1241995310,15cyclictest1017-21chrt21:25:241
124099537,13cyclictest28439-21irqrtprio22:25:200
1240995310,13cyclictest1299-21runrttasks20:57:470
2847191520,4ptp4l0-21swapper/323:05:403
2847191520,4ptp4l0-21swapper/323:03:043
2847191520,4ptp4l0-21swapper/321:49:453
2847191520,4ptp4l0-21swapper/300:15:403
2847191520,4ptp4l0-21swapper/221:45:182
2847191520,12ptp4l5840-21cat19:20:002
124199529,16cyclictest9224-21taskset22:53:171
124199529,15cyclictest10068-21chrt19:26:251
124199528,11cyclictest18373-21chrt23:11:581
124199527,9cyclictest0-21swapper/121:47:211
124099529,12cyclictest1299-21runrttasks23:58:040
124099529,11cyclictest1299-21runrttasks21:54:560
124099529,10cyclictest0-21swapper/019:55:180
124099528,14cyclictest25569-21df_abs21:10:160
1240995210,11cyclictest1299-21runrttasks23:23:020
2847191510,4ptp4l0-21swapper/321:52:133
2847191510,4ptp4l0-21swapper/320:56:263
2847191510,4ptp4l0-21swapper/222:44:372
2847191510,4ptp4l0-21swapper/200:19:332
2847191510,3ptp4l0-21swapper/320:39:533
2847191510,3ptp4l0-21swapper/319:12:013
2847191510,3ptp4l0-21swapper/220:04:532
2847191510,12ptp4l0-21swapper/323:19:463
124199518,10cyclictest1299-21runrttasks21:50:501
124099519,11cyclictest0-21swapper/000:08:380
124099518,39cyclictest0-21swapper/020:25:250
124099517,16cyclictest0-21swapper/019:53:160
124099517,15cyclictest10598-21/usr/sbin/munin19:30:240
124099516,17cyclictest0-21swapper/023:41:060
1240995111,11cyclictest6306-21seq21:35:460
2847191500,3ptp4l0-21swapper/320:01:223
1242995016,6cyclictest33-21ksoftirqd/221:45:002
124199508,11cyclictest1299-21runrttasks20:21:481
124199504,11cyclictest7931-21cat21:40:221
124199503,12cyclictest24398-21sed21:05:271
1241995010,18cyclictest31324-21chrt20:13:141
124099509,10cyclictest8657-21seq21:41:040
124099509,10cyclictest0-21swapper/019:15:100
124099507,6cyclictest2847191ptp4l22:31:260
2847191490,4ptp4l0-21swapper/221:21:142
2847191490,3ptp4l0-21swapper/321:35:283
2847191490,3ptp4l0-21swapper/320:18:173
2847191490,3ptp4l0-21swapper/320:18:173
2847191490,3ptp4l0-21swapper/319:35:163
124199499,16cyclictest13678-21chrt23:01:031
124199498,11cyclictest1299-21runrttasks19:12:561
124199497,11cyclictest2773-21runrttasks23:49:581
124099499,10cyclictest0-21swapper/022:53:330
124099497,7cyclictest7301-21memory20:30:230
124099495,9cyclictest0-21swapper/019:25:130
1240994911,33cyclictest19802-21/usr/sbin/munin00:25:190
1240994911,15cyclictest27638-21/usr/sbin/munin21:15:140
1240994910,7cyclictest1218-21iostat23:45:190
1240994910,11cyclictest1299-21runrttasks23:37:130
2847191480,5ptp4l0-21swapper/323:43:473
2847191480,5ptp4l0-21swapper/019:05:000
2847191480,4ptp4l0-21swapper/323:24:233
2847191480,3ptp4l0-21swapper/219:36:402
2847191480,13ptp4l207-21systemd-journal21:00:260
2847191480,12ptp4l0-21swapper/000:00:170
1242994813,6cyclictest33-21ksoftirqd/221:30:002
124199489,16cyclictest22522-21grep19:55:151
124199488,12cyclictest12145-21taskset00:08:521
124099486,9cyclictest0-21swapper/020:36:020
2847191470,6ptp4l0-21swapper/022:45:210
2847191470,4ptp4l0-21swapper/221:07:512
2847191470,4ptp4l0-21swapper/200:28:592
2847191470,13ptp4l25-21ksoftirqd/119:19:371
148072470,3sleep00-21swapper/021:55:200
1242994728,16cyclictest33-21ksoftirqd/220:10:002
124099477,13cyclictest28199-21awk20:05:230
124099474,39cyclictest30114-21irqrtprio20:10:230
1240994710,11cyclictest1299-21runrttasks21:29:190
2847191460,8ptp4l0-21swapper/320:10:293
2847191460,7ptp4l0-21swapper/300:28:203
2847191460,4ptp4l0-21swapper/322:10:383
2847191460,4ptp4l0-21swapper/321:57:243
2847191460,4ptp4l0-21swapper/219:13:442
2847191460,10ptp4l0-21swapper/023:14:320
2847191460,10ptp4l0-21swapper/021:05:050
124199466,11cyclictest31265-21ntpq22:30:231
124199466,10cyclictest0-21swapper/123:05:071
1241994610,17cyclictest4418-21chrt22:43:391
124099469,10cyclictest0-21swapper/023:16:330
124099467,8cyclictest13500-21iostat_ios19:35:190
124099465,10cyclictest3467-21chrt23:50:170
1242994517,6cyclictest33-21ksoftirqd/221:00:172
1242994512,6cyclictest33-21ksoftirqd/223:25:222
1242994511,6cyclictest33-21ksoftirqd/220:15:002
124199459,11cyclictest20689-21runrttasks23:17:031
124199452,9cyclictest11093-21apt-config20:40:021
1241994510,17cyclictest15725-21chrt20:49:261
124099456,6cyclictest2847191ptp4l20:20:150
124099456,14cyclictest17138-21memory22:00:230
124099454,7cyclictest3593-21ntp_states22:40:230
2847191440,5ptp4l10190-21iostat_ios22:55:190
2847191440,5ptp4l0-21swapper/100:14:591
2847191440,5ptp4l0-21swapper/022:05:200
2847191440,5ptp4l0-21swapper/019:10:200
2847191440,4ptp4l0-21swapper/323:46:293
2847191440,4ptp4l0-21swapper/220:33:162
2847191440,4ptp4l0-21swapper/219:55:252
2847191440,3ptp4l18489-21apt-get22:05:132
2847191440,3ptp4l0-21swapper/321:05:003
124199448,12cyclictest4839-21taskset23:51:581
124099447,9cyclictest0-21swapper/021:22:260
124099447,12cyclictest24486-21expr23:25:190
124099446,11cyclictest0-21swapper/000:12:360
2847191430,5ptp4l0-21swapper/323:36:493
2847191430,5ptp4l0-21swapper/321:20:213
2847191430,4ptp4l0-21swapper/322:52:373
2847191430,3ptp4l0-21swapper/223:37:512
2847191430,10ptp4l0-21swapper/019:40:020
124299433,3cyclictest121rcu_preempt00:31:172
124299433,2cyclictest121rcu_preempt23:57:202
1242994314,5cyclictest33-21ksoftirqd/223:10:202
1242994311,7cyclictest33-21ksoftirqd/222:35:242
124199439,10cyclictest30214-21chrt23:39:281
124199438,7cyclictest0-21swapper/122:35:111
124099437,11cyclictest13239-21tr23:00:260
124099435,34cyclictest0-21swapper/019:20:200
1240994311,17cyclictest23448-21vmstat00:30:310
2847191420,5ptp4l0-21swapper/122:00:191
2847191420,4ptp4l4986-21df22:45:151
2847191420,4ptp4l23820-21apt-get00:35:033
2847191420,4ptp4l0-21swapper/220:57:282
2847191420,4ptp4l0-21swapper/000:15:190
2847191420,3ptp4l17876-21diskstats19:45:160
2847191420,3ptp4l17876-21diskstats19:45:160
2847191420,3ptp4l0-21swapper/323:50:113
2847191420,3ptp4l0-21swapper/319:45:043
2847191420,3ptp4l0-21swapper/319:45:043
2847191420,3ptp4l0-21swapper/220:45:352
2847191420,10ptp4l0-21swapper/319:40:193
1242994215,7cyclictest33-21ksoftirqd/200:13:012
1242994213,4cyclictest33-21ksoftirqd/219:27:232
1242994212,3cyclictest33-21ksoftirqd/222:29:362
124199429,17cyclictest17997-21chrt20:53:551
124199428,11cyclictest5829-21chrt20:26:501
124099428,7cyclictest2860-21iostat21:30:210
2847191410,5ptp4l0-21swapper/322:55:203
2847191410,5ptp4l0-21swapper/222:20:132
2847191410,4ptp4l8858-21df20:35:142
2847191410,4ptp4l0-21swapper/320:45:313
2847191410,4ptp4l0-21swapper/219:33:332
2847191410,4ptp4l0-21swapper/119:45:211
2847191410,4ptp4l0-21swapper/119:45:211
2847191410,4ptp4l0-21swapper/022:19:350
2847191410,4ptp4l0-21swapper/022:10:280
2847191410,4ptp4l0-21swapper/020:47:120
2847191410,4ptp4l0-21swapper/020:42:360
2847191410,3ptp4l8619-21ls00:00:212
2847191410,3ptp4l5097-21diskstats22:45:162
2847191410,3ptp4l30164-21apt-get22:30:112
2847191410,3ptp4l21963-21df00:30:151
2847191410,3ptp4l15878-21/usr/sbin/munin23:05:290
1242994114,3cyclictest33-21ksoftirqd/223:05:012
1242994113,7cyclictest33-21ksoftirqd/223:45:002
1242994112,5cyclictest33-21ksoftirqd/200:05:282
1242994111,5cyclictest33-21ksoftirqd/221:55:132
2847191400,5ptp4l0-21swapper/323:30:133
2847191400,5ptp4l0-21swapper/121:04:491
2847191400,4ptp4l16178-21apt-get22:00:143
2847191400,4ptp4l10752-21apt-get20:40:043
2847191400,4ptp4l0-21swapper/321:25:373
2847191400,4ptp4l0-21swapper/321:10:173
2847191400,4ptp4l0-21swapper/223:50:482
2847191400,4ptp4l0-21swapper/223:21:522
2847191400,4ptp4l0-21swapper/223:16:022
2847191400,4ptp4l0-21swapper/223:05:312
2847191400,4ptp4l0-21swapper/222:15:402
2847191400,4ptp4l0-21swapper/222:12:182
2847191400,4ptp4l0-21swapper/220:40:242
2847191400,4ptp4l0-21swapper/220:25:522
2847191400,4ptp4l0-21swapper/220:18:032
2847191400,4ptp4l0-21swapper/220:18:032
2847191400,4ptp4l0-21swapper/219:45:292
2847191400,4ptp4l0-21swapper/219:45:292
2847191400,4ptp4l0-21swapper/200:20:532
2847191400,4ptp4l0-21swapper/123:30:271
2847191400,4ptp4l0-21swapper/119:33:041
2847191400,4ptp4l0-21swapper/119:23:071
2847191400,4ptp4l0-21swapper/100:01:171
2847191400,4ptp4l0-21swapper/023:30:270
2847191400,3ptp4l0-21swapper/322:09:593
1242994011,5cyclictest33-21ksoftirqd/220:22:292
2847191390,5ptp4l0-21swapper/100:25:341
2847191390,4ptp4l0-21swapper/323:55:193
2847191390,4ptp4l0-21swapper/323:25:133
2847191390,4ptp4l0-21swapper/322:30:103
2847191390,4ptp4l0-21swapper/220:50:292
2847191390,4ptp4l0-21swapper/123:57:361
2847191390,4ptp4l0-21swapper/123:26:231
2847191390,4ptp4l0-21swapper/120:59:011
2847191390,4ptp4l0-21swapper/120:30:271
2847191390,4ptp4l0-21swapper/120:05:481
2847191390,4ptp4l0-21swapper/100:35:241
2847191390,3ptp4l0-21swapper/122:20:061
2847191380,4ptp4l25-21ksoftirqd/120:17:251
2847191380,4ptp4l25-21ksoftirqd/120:17:251
2847191380,4ptp4l0-21swapper/122:57:551
2847191380,4ptp4l0-21swapper/122:25:221
2847191380,3ptp4l4541-21latency_hist21:35:001
2847191380,3ptp4l0-21swapper/121:56:081
2847191380,3ptp4l0-21swapper/119:36:221
2847191380,2ptp4l0-21swapper/120:01:301
2847191370,3ptp4l0-21swapper/122:15:281
2847191370,3ptp4l0-21swapper/122:07:061
2847191360,3ptp4l0-21swapper/100:17:271
2847191350,3ptp4l0-21swapper/121:37:331
2849691252,3phc2sys0-21swapper/219:06:102
326022151,7sleep332740-21ls19:05:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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