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2025-09-16 - 15:03
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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 Tue Sep 16, 2025 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
445621710,5sleep01655799cyclictest22:10:220
3005421280,3sleep01655799cyclictest20:45:290
2847191630,19ptp4l23605-21latency_hist20:35:002
194412620,4sleep10-21swapper/121:35:011
16562996230,8cyclictest41-21ksoftirqd/300:35:003
2847191610,4ptp4l0-21swapper/300:05:003
2847191610,4ptp4l0-21swapper/222:00:252
2847191600,4ptp4l0-21swapper/322:39:303
2847191600,4ptp4l0-21swapper/121:15:021
16562996026,10cyclictest41-21ksoftirqd/323:41:353
2847191590,4ptp4l0-21swapper/322:50:033
2847191590,4ptp4l0-21swapper/223:20:142
2847191590,4ptp4l0-21swapper/219:20:212
16562995929,8cyclictest41-21ksoftirqd/319:15:283
16559995917,6cyclictest25-21ksoftirqd/122:07:131
2847191580,4ptp4l0-21swapper/219:46:392
16562995823,7cyclictest41-21ksoftirqd/320:30:013
16562995726,6cyclictest41-21ksoftirqd/323:45:153
2847191560,5ptp4l0-21swapper/220:19:342
2847191560,3ptp4l0-21swapper/120:45:191
16562995624,7cyclictest41-21ksoftirqd/321:35:213
16562995624,5cyclictest41-21ksoftirqd/320:20:143
16562995624,5cyclictest41-21ksoftirqd/300:20:223
16562995623,8cyclictest41-21ksoftirqd/321:15:213
16562995623,7cyclictest41-21ksoftirqd/300:15:593
16559995625,9cyclictest25-21ksoftirqd/121:25:011
2847191550,3ptp4l0-21swapper/223:34:342
2847191550,3ptp4l0-21swapper/223:10:232
16562995526,9cyclictest41-21ksoftirqd/319:25:153
16562995526,8cyclictest41-21ksoftirqd/321:30:263
16562995523,9cyclictest41-21ksoftirqd/319:40:253
16562995523,8cyclictest41-21ksoftirqd/320:10:203
16562995521,7cyclictest41-21ksoftirqd/319:50:193
16559995519,4cyclictest25-21ksoftirqd/121:40:251
2847191540,4ptp4l0-21swapper/200:26:062
2847191540,4ptp4l0-21swapper/119:09:161
2847191540,3ptp4l0-21swapper/123:41:261
2847191540,3ptp4l0-21swapper/119:40:121
16559995420,6cyclictest25-21ksoftirqd/123:35:151
2847191530,4ptp4l0-21swapper/000:22:080
2847191530,4ptp4l0-21swapper/000:14:060
2847191530,3ptp4l0-21swapper/022:34:220
16562995324,9cyclictest41-21ksoftirqd/322:10:203
16562995322,6cyclictest41-21ksoftirqd/300:25:293
16562995322,4cyclictest41-21ksoftirqd/300:00:153
16562995320,8cyclictest41-21ksoftirqd/323:00:263
16562995320,8cyclictest41-21ksoftirqd/323:00:263
16562995318,4cyclictest41-21ksoftirqd/320:15:143
16559995318,7cyclictest25-21ksoftirqd/100:30:241
2847191520,4ptp4l0-21swapper/123:50:481
16562995226,3cyclictest41-21ksoftirqd/320:55:273
16562995226,3cyclictest41-21ksoftirqd/320:55:263
16562995222,9cyclictest41-21ksoftirqd/300:10:223
16562995222,8cyclictest41-21ksoftirqd/319:30:273
1656299522,25cyclictest0-21swapper/320:33:443
16562995221,8cyclictest41-21ksoftirqd/323:30:003
16562995221,8cyclictest41-21ksoftirqd/321:15:003
16562995220,8cyclictest41-21ksoftirqd/322:20:243
16562995219,7cyclictest41-21ksoftirqd/320:40:263
16559995220,4cyclictest25-21ksoftirqd/123:45:191
16559995219,7cyclictest25-21ksoftirqd/119:55:151
16559995219,7cyclictest25-21ksoftirqd/119:55:151
2847191510,4ptp4l0-21swapper/220:58:082
2847191510,4ptp4l0-21swapper/220:58:082
2847191510,4ptp4l0-21swapper/100:28:271
2847191510,4ptp4l0-21swapper/023:20:320
2847191510,4ptp4l0-21swapper/000:34:170
2847191510,3ptp4l0-21swapper/223:55:062
2847191510,3ptp4l0-21swapper/222:59:552
2847191510,3ptp4l0-21swapper/219:10:202
2847191510,3ptp4l0-21swapper/120:15:221
16562995124,4cyclictest41-21ksoftirqd/321:55:303
16562995122,7cyclictest41-21ksoftirqd/323:35:183
16562995120,7cyclictest41-21ksoftirqd/319:45:193
1655999513,6cyclictest25-21ksoftirqd/119:34:591
16559995126,7cyclictest25-21ksoftirqd/100:00:181
16559995120,7cyclictest25-21ksoftirqd/119:15:261
16559995119,7cyclictest25-21ksoftirqd/119:10:251
16559995117,6cyclictest25-21ksoftirqd/122:47:491
16559995117,6cyclictest25-21ksoftirqd/121:12:341
63742500,4sleep20-21swapper/222:15:182
2847191500,4ptp4l0-21swapper/220:36:102
2847191500,4ptp4l0-21swapper/219:26:452
2847191500,4ptp4l0-21swapper/023:51:150
2847191500,4ptp4l0-21swapper/021:00:070
16562995022,7cyclictest41-21ksoftirqd/319:10:143
1656299502,21cyclictest0-21swapper/321:02:303
16559995019,7cyclictest25-21ksoftirqd/122:15:181
16557995015,6cyclictest9-21ksoftirqd/023:05:170
2847191490,6ptp4l0-21swapper/019:05:170
2847191490,4ptp4l0-21swapper/021:34:210
2847191490,4ptp4l0-21swapper/021:11:360
2847191490,4ptp4l0-21swapper/020:09:360
2847191490,4ptp4l0-21swapper/019:34:110
2847191490,3ptp4l0-21swapper/220:43:432
2847191490,3ptp4l0-21swapper/122:12:121
2847191490,3ptp4l0-21swapper/120:05:081
1656299495,4cyclictest41-21ksoftirqd/320:00:003
1656299495,4cyclictest41-21ksoftirqd/320:00:003
1656299494,7cyclictest41-21ksoftirqd/321:25:003
16562994925,7cyclictest41-21ksoftirqd/321:05:243
16562994923,7cyclictest41-21ksoftirqd/321:45:273
16562994922,8cyclictest41-21ksoftirqd/320:35:293
16562994914,9cyclictest41-21ksoftirqd/320:10:003
1655999493,8cyclictest25-21ksoftirqd/120:25:181
16559994920,4cyclictest25-21ksoftirqd/120:55:011
2847191480,4ptp4l0-21swapper/219:43:122
2847191480,4ptp4l0-21swapper/020:25:490
2847191480,3ptp4l0-21swapper/223:53:402
2847191480,3ptp4l0-21swapper/222:49:452
2847191480,10ptp4l0-21swapper/221:55:212
1656299482,7cyclictest41-21ksoftirqd/319:40:003
1656299482,20cyclictest0-21swapper/322:31:503
1656299482,17cyclictest0-21swapper/321:43:493
16562994818,7cyclictest41-21ksoftirqd/323:10:163
1655999485,8cyclictest0-21swapper/100:05:141
1655999485,4cyclictest25-21ksoftirqd/120:05:001
16559994818,4cyclictest25-21ksoftirqd/122:20:231
1655999480,12cyclictest25-21ksoftirqd/123:30:021
2847191470,4ptp4l0-21swapper/000:17:390
2847191470,3ptp4l0-21swapper/200:30:152
2847191470,10ptp4l0-21swapper/223:06:022
1656299472,7cyclictest41-21ksoftirqd/320:00:153
1656299472,5cyclictest0-21swapper/300:35:023
1656299472,20cyclictest0-21swapper/322:55:093
1655999475,8cyclictest25-21ksoftirqd/122:25:191
1655999474,7cyclictest0-21swapper/100:20:151
1655999473,8cyclictest25-21ksoftirqd/119:20:191
1655999473,2cyclictest0-21swapper/121:55:211
16559994726,8cyclictest25-21ksoftirqd/120:30:131
16559994723,4cyclictest25-21ksoftirqd/100:15:281
16559994722,7cyclictest25-21ksoftirqd/123:00:281
16559994722,7cyclictest25-21ksoftirqd/123:00:281
16559994721,8cyclictest25-21ksoftirqd/100:10:171
16559994713,6cyclictest25-21ksoftirqd/120:10:151
16559994712,4cyclictest25-21ksoftirqd/122:58:441
2847191460,10ptp4l0-21swapper/221:42:352
1656299465,7cyclictest22442-21gpgv22:50:003
1656299463,6cyclictest41-21ksoftirqd/323:15:313
16562994614,7cyclictest41-21ksoftirqd/322:05:123
1655999465,6cyclictest25517-21cut21:45:261
1655999463,9cyclictest25-21ksoftirqd/121:50:131
1655999463,7cyclictest25-21ksoftirqd/100:40:011
16559994620,4cyclictest25-21ksoftirqd/123:14:471
2847191450,9ptp4l0-21swapper/220:14:382
2847191450,5ptp4l32242-21diskstats23:10:170
2847191450,4ptp4l0-21swapper/219:05:502
2847191450,10ptp4l0-21swapper/223:17:192
1656299452,6cyclictest0-21swapper/321:25:283
1656299452,12cyclictest0-21swapper/320:50:263
1656299452,11cyclictest0-21swapper/322:25:153
1655999455,8cyclictest25-21ksoftirqd/121:05:181
1655999453,8cyclictest0-21swapper/123:05:211
1655999453,6cyclictest25-21ksoftirqd/119:50:251
1655999453,4cyclictest25-21ksoftirqd/119:35:191
1655999452,10cyclictest25-21ksoftirqd/122:50:181
16559994515,6cyclictest25-21ksoftirqd/121:35:231
2847191440,9ptp4l0-21swapper/221:46:442
2847191440,9ptp4l0-21swapper/221:34:402
2847191440,9ptp4l0-21swapper/200:09:402
2847191440,4ptp4l0-21swapper/021:27:500
2847191440,10ptp4l0-21swapper/219:38:232
1656299446,2cyclictest41-21ksoftirqd/323:30:113
1656299445,7cyclictest41-21ksoftirqd/319:24:593
16562994412,8cyclictest41-21ksoftirqd/323:24:033
1655999444,6cyclictest25-21ksoftirqd/119:25:261
1655999444,6cyclictest16459-21ls22:35:241
1655999443,4cyclictest25-21ksoftirqd/123:20:521
1655999440,5cyclictest31782-21sed22:00:221
1655999440,12cyclictest25-21ksoftirqd/120:20:261
2847191430,9ptp4l0-21swapper/219:32:232
2847191430,4ptp4l0-21swapper/222:07:052
2847191430,4ptp4l0-21swapper/019:44:560
2847191430,4ptp4l0-21swapper/019:25:210
2847191430,3ptp4l2922-21apt-get19:50:130
1656299436,2cyclictest41-21ksoftirqd/322:15:153
1656299435,3cyclictest121rcu_preempt23:50:153
1656299434,7cyclictest121rcu_preempt21:51:353
1656299432,7cyclictest0-21swapper/323:59:113
1655999436,7cyclictest28217-21cron20:45:011
1655999433,7cyclictest25-21ksoftirqd/119:50:001
1655999433,6cyclictest25-21ksoftirqd/121:25:251
1655999433,6cyclictest0-21swapper/122:40:161
1655999432,7cyclictest25-21ksoftirqd/122:30:261
1655999432,6cyclictest0-21swapper/123:30:091
1655999430,7cyclictest25-21ksoftirqd/123:15:161
16557994317,6cyclictest9-21ksoftirqd/021:05:260
2847191420,9ptp4l0-21swapper/222:35:442
2847191420,9ptp4l0-21swapper/222:33:502
2847191420,5ptp4l1935-21/usr/sbin/munin20:55:230
2847191420,5ptp4l1935-21/usr/sbin/munin20:55:230
2847191420,5ptp4l0-21swapper/022:40:220
2847191420,4ptp4l9041-21ntp_states21:10:242
2847191420,4ptp4l26252-21ntp_states00:05:240
2847191420,4ptp4l11152-21apt-get23:35:142
2847191420,4ptp4l0-21swapper/223:45:112
2847191420,4ptp4l0-21swapper/021:39:330
2847191420,3ptp4l0-21swapper/219:19:432
2847191420,3ptp4l0-21swapper/021:20:220
1656299420,7cyclictest41-21ksoftirqd/323:05:223
1655999425,9cyclictest25-21ksoftirqd/120:35:241
1655999423,3cyclictest121rcu_preempt21:00:301
1655999422,2cyclictest0-21swapper/123:55:191
1655999422,10cyclictest25-21ksoftirqd/120:55:251
1655999422,10cyclictest25-21ksoftirqd/120:55:251
1655799425,3cyclictest9-21ksoftirqd/019:16:140
2847191410,9ptp4l0-21swapper/221:27:302
2847191410,8ptp4l1293-21snmpd19:05:443
2847191410,5ptp4l0-21swapper/320:45:313
2847191410,5ptp4l0-21swapper/023:15:170
2847191410,5ptp4l0-21swapper/022:45:150
2847191410,4ptp4l31369-21iostat_ios20:50:220
2847191410,4ptp4l21950-21hddtemp_smartct20:30:130
2847191410,4ptp4l0-21swapper/322:00:283
2847191410,4ptp4l0-21swapper/200:24:332
2847191410,4ptp4l0-21swapper/200:19:592
2847191410,4ptp4l0-21swapper/023:40:380
2847191410,4ptp4l0-21swapper/023:27:160
2847191410,4ptp4l0-21swapper/021:43:470
2847191410,4ptp4l0-21swapper/019:59:510
2847191410,4ptp4l0-21swapper/019:59:510
2847191410,4ptp4l0-21swapper/019:35:150
2847191410,4ptp4l0-21swapper/000:00:130
2847191410,3ptp4l6537-21iostat_ios22:15:200
2847191410,3ptp4l5603-21apt-get21:05:102
2847191410,3ptp4l22922-21ls19:20:290
2847191410,3ptp4l14432-21ls23:40:212
2847191410,3ptp4l0-21swapper/022:05:210
2847191410,13ptp4l0-21swapper/023:03:430
2847191410,13ptp4l0-21swapper/023:03:430
1656299412,6cyclictest41-21ksoftirqd/322:40:173
1655799417,7cyclictest9-21ksoftirqd/020:15:000
2847191400,9ptp4l0-21swapper/220:00:352
2847191400,5ptp4l0-21swapper/220:49:142
2847191400,5ptp4l0-21swapper/023:45:020
2847191400,5ptp4l0-21swapper/021:15:300
2847191400,4ptp4l0-21swapper/223:25:092
2847191400,4ptp4l0-21swapper/223:02:082
2847191400,4ptp4l0-21swapper/223:02:082
2847191400,4ptp4l0-21swapper/222:40:572
2847191400,4ptp4l0-21swapper/222:21:472
2847191400,4ptp4l0-21swapper/222:11:062
2847191400,4ptp4l0-21swapper/221:52:492
2847191400,4ptp4l0-21swapper/221:38:172
2847191400,4ptp4l0-21swapper/220:25:212
2847191400,4ptp4l0-21swapper/200:10:592
2847191400,4ptp4l0-21swapper/023:58:110
2847191400,4ptp4l0-21swapper/022:55:560
2847191400,4ptp4l0-21swapper/022:30:000
2847191400,4ptp4l0-21swapper/022:21:160
2847191400,4ptp4l0-21swapper/021:55:540
2847191400,4ptp4l0-21swapper/021:45:200
2847191400,4ptp4l0-21swapper/020:35:110
2847191400,4ptp4l0-21swapper/019:14:020
2847191400,4ptp4l0-21swapper/000:35:200
2847191400,4ptp4l0-21swapper/000:25:250
2847191400,3ptp4l32183-21ls22:00:260
2847191400,3ptp4l27861-21python21:50:270
2847191400,3ptp4l23780-21ntp_states22:50:242
2847191400,3ptp4l17014-21ls22:35:300
2847191400,3ptp4l11280-21strings21:15:262
2847191400,3ptp4l0-21swapper/200:00:312
2847191400,3ptp4l0-21swapper/023:30:260
2847191390,4ptp4l0-21swapper/222:25:282
2847191390,4ptp4l0-21swapper/221:20:432
2847191390,4ptp4l0-21swapper/221:01:042
2847191390,4ptp4l0-21swapper/220:50:002
2847191390,4ptp4l0-21swapper/220:20:202
2847191390,4ptp4l0-21swapper/220:06:222
2847191390,4ptp4l0-21swapper/219:56:042
2847191390,4ptp4l0-21swapper/219:56:042
2847191390,4ptp4l0-21swapper/219:54:362
2847191390,4ptp4l0-21swapper/200:37:392
2847191390,4ptp4l0-21swapper/022:50:300
2847191390,4ptp4l0-21swapper/020:21:020
2847191390,4ptp4l0-21swapper/020:00:130
2847191390,4ptp4l0-21swapper/019:46:090
2847191390,3ptp4l15081-21iostat_ios20:15:180
2847191390,3ptp4l0-21swapper/023:35:160
2847191390,3ptp4l0-21swapper/020:40:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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