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2025-11-21 - 19:49
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri Nov 21, 2025 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2569221310,2sleep0842999cyclictest07:45:170
2847191680,4ptp4l0-21swapper/208:05:092
268172670,7sleep2843199cyclictest11:15:202
2847191600,4ptp4l0-21swapper/311:24:393
2847191600,3ptp4l3340-21iostat_ios11:35:181
2847191600,3ptp4l14671-21ntp_states08:30:241
2847191600,3ptp4l0-21swapper/012:05:250
2847191590,4ptp4l0-21swapper/012:12:110
2847191590,4ptp4l0-21swapper/012:12:110
2847191590,3ptp4l17007-21hddtemp_smartct10:55:161
2847191590,3ptp4l0-21swapper/008:45:230
2847191580,4ptp4l0-21swapper/212:32:422
2847191580,4ptp4l0-21swapper/211:45:392
2847191580,4ptp4l0-21swapper/111:24:401
2847191580,4ptp4l0-21swapper/109:37:321
2847191580,3ptp4l0-21swapper/108:58:271
2847191580,3ptp4l0-21swapper/108:58:271
2847191580,3ptp4l0-21swapper/012:15:150
2847191560,4ptp4l0-21swapper/108:37:561
2847191560,4ptp4l0-21swapper/009:23:450
2847191560,3ptp4l0-21swapper/109:05:301
2847191560,3ptp4l0-21swapper/108:45:431
2847191560,3ptp4l0-21swapper/108:25:001
2847191550,4ptp4l0-21swapper/209:47:392
2847191550,4ptp4l0-21swapper/110:49:441
2847191550,4ptp4l0-21swapper/107:15:411
2847191540,4ptp4l0-21swapper/209:59:562
2847191540,4ptp4l0-21swapper/209:30:102
2847191540,3ptp4l0-21swapper/112:05:261
2847191540,3ptp4l0-21swapper/111:13:481
2847191540,3ptp4l0-21swapper/107:56:591
2847191540,3ptp4l0-21swapper/107:56:581
2847191530,4ptp4l0-21swapper/211:53:062
2847191530,4ptp4l0-21swapper/211:05:402
2847191530,4ptp4l0-21swapper/209:26:372
2847191530,4ptp4l0-21swapper/207:05:212
2847191530,4ptp4l0-21swapper/112:16:061
2847191530,4ptp4l0-21swapper/109:02:281
2847191530,4ptp4l0-21swapper/012:26:510
2847191530,3ptp4l0-21swapper/212:22:542
2847191520,4ptp4l0-21swapper/212:14:502
2847191520,4ptp4l0-21swapper/212:14:502
2847191520,4ptp4l0-21swapper/212:06:412
2847191520,4ptp4l0-21swapper/211:03:062
2847191520,4ptp4l0-21swapper/209:53:562
2847191520,4ptp4l0-21swapper/209:13:412
2847191520,4ptp4l0-21swapper/207:47:522
2847191520,4ptp4l0-21swapper/207:37:302
2847191520,4ptp4l0-21swapper/109:10:031
2847191520,3ptp4l0-21swapper/309:55:063
2847191520,3ptp4l0-21swapper/110:53:211
2847191520,3ptp4l0-21swapper/108:05:121
2847191520,3ptp4l0-21swapper/107:34:561
2847191520,3ptp4l0-21swapper/107:26:051
2847191520,2ptp4l0-21swapper/109:34:161
2847191510,4ptp4l0-21swapper/311:03:103
2847191510,4ptp4l0-21swapper/211:20:352
2847191510,4ptp4l0-21swapper/111:27:231
2847191510,4ptp4l0-21swapper/007:32:260
2847191510,3ptp4l0-21swapper/308:05:553
8429995012,7cyclictest9-21ksoftirqd/011:50:000
2847191500,4ptp4l0-21swapper/308:33:023
2847191500,4ptp4l0-21swapper/211:32:382
2847191500,4ptp4l0-21swapper/209:19:052
2847191500,4ptp4l0-21swapper/207:53:432
2847191500,4ptp4l0-21swapper/111:31:211
2847191500,4ptp4l0-21swapper/108:52:101
2847191500,4ptp4l0-21swapper/108:41:561
2847191500,3ptp4l0-21swapper/112:29:431
8431994921,3cyclictest33-21ksoftirqd/207:25:002
8431994921,3cyclictest33-21ksoftirqd/207:25:002
2847191490,4ptp4l0-21swapper/110:28:531
2847191490,12ptp4l0-21swapper/108:13:451
2847191480,4ptp4l0-21swapper/007:53:100
2847191480,13ptp4l9-21ksoftirqd/010:55:180
2847191480,13ptp4l0-21swapper/211:35:142
2847191480,11ptp4l0-21swapper/111:00:181
2847191480,10ptp4l0-21swapper/112:02:381
8431994720,3cyclictest33-21ksoftirqd/208:00:222
2847191470,5ptp4l0-21swapper/307:08:013
2847191470,4ptp4l0-21swapper/011:15:110
2847191470,3ptp4l0-21swapper/108:00:461
2847191470,11ptp4l0-21swapper/207:56:532
2847191470,11ptp4l0-21swapper/207:56:532
8431994618,7cyclictest33-21ksoftirqd/208:30:002
8431994614,4cyclictest33-21ksoftirqd/210:27:072
2847191460,9ptp4l0-21swapper/207:30:432
2847191460,5ptp4l0-21swapper/107:09:091
2847191460,4ptp4l0-21swapper/109:46:401
2847191460,4ptp4l0-21swapper/010:14:360
2847191460,10ptp4l0-21swapper/209:44:252
8431994523,10cyclictest33-21ksoftirqd/212:35:362
8431994511,11cyclictest33-21ksoftirqd/209:35:252
8429994515,4cyclictest9-21ksoftirqd/011:09:330
2847191450,9ptp4l0-21swapper/208:38:392
2847191450,9ptp4l0-21swapper/109:58:141
2847191450,3ptp4l25700-21apt-get10:05:142
2847191450,11ptp4l0-21swapper/208:24:222
2847191450,10ptp4l0-21swapper/207:11:342
135702450,4sleep00-21swapper/008:30:140
2847191440,9ptp4l0-21swapper/208:48:292
2847191440,5ptp4l0-21swapper/109:15:261
2847191440,4ptp4l13914-21apt-get09:40:141
2847191440,3ptp4l29766-21apt-get09:05:172
2847191440,3ptp4l11184-21apt-get08:25:131
2847191440,3ptp4l0-21swapper/307:11:363
2847191440,10ptp4l0-21swapper/208:44:492
8431994310,6cyclictest33-21ksoftirqd/210:40:312
8429994314,4cyclictest9-21ksoftirqd/008:50:250
8429994313,4cyclictest9-21ksoftirqd/010:45:000
41798430,4rtkit-daemon0-21swapper/009:50:330
2847191430,9ptp4l0-21swapper/211:41:332
2847191430,9ptp4l0-21swapper/210:57:042
2847191430,8ptp4l0-21swapper/210:11:392
2847191430,4ptp4l5332-21meminfo09:20:201
2847191430,4ptp4l30053-21hddtemp_smartct07:55:150
2847191430,4ptp4l30053-21hddtemp_smartct07:55:150
2847191430,4ptp4l22424-21apt-get07:40:161
2847191430,4ptp4l10305-21ls08:20:270
2847191430,4ptp4l0-21swapper/309:39:063
2847191430,4ptp4l0-21swapper/107:51:481
2847191430,4ptp4l0-21swapper/007:15:150
2847191430,3ptp4l19220-21diskstats11:00:170
2847191430,3ptp4l13493-21apt-get08:30:132
2847191430,3ptp4l0-21swapper/111:53:041
2847191430,3ptp4l0-21swapper/008:39:120
2847191430,10ptp4l9327-21sendmail10:40:001
843199425,4cyclictest33-21ksoftirqd/210:35:252
8431994212,3cyclictest33-21ksoftirqd/210:50:572
843199420,3cyclictest121rcu_preempt07:44:592
8429994211,6cyclictest9-21ksoftirqd/007:44:590
2847191420,9ptp4l0-21swapper/210:49:082
2847191420,8ptp4l25-21ksoftirqd/107:46:361
2847191420,5ptp4l0-21swapper/311:10:223
2847191420,5ptp4l0-21swapper/309:10:133
2847191420,5ptp4l0-21swapper/308:15:183
2847191420,5ptp4l0-21swapper/307:43:593
2847191420,4ptp4l24858-21memory12:20:220
2847191420,4ptp4l12882-21irqstats11:55:171
2847191420,4ptp4l0-21swapper/208:12:452
2847191420,4ptp4l0-21swapper/111:17:331
2847191420,4ptp4l0-21swapper/107:10:011
2847191420,4ptp4l0-21swapper/011:42:080
2847191420,3ptp4l6997-21df_inode09:25:151
2847191420,3ptp4l4373-21apt-get09:20:112
2847191420,3ptp4l23173-21apt-get10:00:113
2847191420,3ptp4l21280-21hddtemp_smartct09:55:160
2847191410,9ptp4l0-21swapper/210:17:022
2847191410,5ptp4l843099cyclictest12:10:181
2847191410,5ptp4l843099cyclictest12:10:171
2847191410,5ptp4l0-21swapper/310:25:123
2847191410,5ptp4l0-21swapper/208:52:442
2847191410,4ptp4l24327-21perl12:20:171
2847191410,4ptp4l16976-21ls07:25:253
2847191410,4ptp4l14426-21/usr/sbin/munin09:40:190
2847191410,4ptp4l0-21swapper/309:40:073
2847191410,4ptp4l0-21swapper/309:03:093
2847191410,4ptp4l0-21swapper/308:10:143
2847191410,4ptp4l0-21swapper/307:35:583
2847191410,4ptp4l0-21swapper/307:30:153
2847191410,4ptp4l0-21swapper/307:23:353
2847191410,4ptp4l0-21swapper/307:23:353
2847191410,4ptp4l0-21swapper/208:59:292
2847191410,4ptp4l0-21swapper/208:59:292
2847191410,4ptp4l0-21swapper/208:15:512
2847191410,4ptp4l0-21swapper/012:30:160
2847191410,4ptp4l0-21swapper/010:50:130
2847191410,4ptp4l0-21swapper/009:00:160
2847191410,4ptp4l0-21swapper/007:39:350
2847191410,4ptp4l0-21swapper/007:10:200
2847191410,3ptp4l3196-21hddtemp_smartct11:35:160
2847191410,3ptp4l30731-21memory09:05:250
2847191410,3ptp4l21441-21python07:35:271
2847191410,3ptp4l18737-21df09:50:141
2847191410,3ptp4l14587-21ls07:20:240
2847191410,3ptp4l14587-21ls07:20:240
2847191410,3ptp4l12604-21iostat11:55:160
2847191410,3ptp4l12442-21ntp_states09:35:230
2847191410,3ptp4l1227-21irqstats11:30:180
2847191410,3ptp4l0-21swapper/007:25:330
8429994034,3cyclictest9-21ksoftirqd/011:55:000
2847191400,5ptp4l0-21swapper/312:15:173
2847191400,5ptp4l0-21swapper/310:20:253
2847191400,5ptp4l0-21swapper/309:20:123
2847191400,5ptp4l0-21swapper/212:17:102
2847191400,5ptp4l0-21swapper/207:15:132
2847191400,5ptp4l0-21swapper/009:30:130
2847191400,4ptp4l2177-21sed08:05:110
2847191400,4ptp4l12981-21/usr/sbin/munin10:45:220
2847191400,4ptp4l0-21swapper/310:08:583
2847191400,4ptp4l0-21swapper/309:50:203
2847191400,4ptp4l0-21swapper/309:18:483
2847191400,4ptp4l0-21swapper/308:58:153
2847191400,4ptp4l0-21swapper/308:58:153
2847191400,4ptp4l0-21swapper/308:35:263
2847191400,4ptp4l0-21swapper/308:03:293
2847191400,4ptp4l0-21swapper/307:45:143
2847191400,4ptp4l0-21swapper/212:25:262
2847191400,4ptp4l0-21swapper/212:02:182
2847191400,4ptp4l0-21swapper/211:26:482
2847191400,4ptp4l0-21swapper/210:32:492
2847191400,4ptp4l0-21swapper/210:20:292
2847191400,4ptp4l0-21swapper/209:01:552
2847191400,4ptp4l0-21swapper/207:25:572
2847191400,4ptp4l0-21swapper/112:33:221
2847191400,4ptp4l0-21swapper/107:22:241
2847191400,4ptp4l0-21swapper/107:22:241
2847191400,4ptp4l0-21swapper/012:02:080
2847191400,4ptp4l0-21swapper/011:10:050
2847191400,4ptp4l0-21swapper/010:35:230
2847191400,4ptp4l0-21swapper/010:20:400
2847191400,4ptp4l0-21swapper/010:15:170
2847191400,4ptp4l0-21swapper/009:27:150
2847191400,4ptp4l0-21swapper/009:15:390
2847191400,4ptp4l0-21swapper/008:59:190
2847191400,4ptp4l0-21swapper/008:59:190
2847191400,4ptp4l0-21swapper/008:40:320
2847191400,4ptp4l0-21swapper/008:27:010
2847191400,4ptp4l0-21swapper/007:08:470
2847191400,3ptp4l6743-21df08:15:150
2847191400,3ptp4l30324-21apt-get10:15:121
2847191400,3ptp4l29692-21users10:10:281
2847191400,3ptp4l25250-21apt-get10:05:031
2847191400,3ptp4l0-21swapper/307:55:583
2847191400,3ptp4l0-21swapper/307:55:583
2847191400,3ptp4l0-21swapper/111:05:221
2847191400,3ptp4l0-21swapper/009:45:190
2847191390,4ptp4l19624-21grep12:10:163
2847191390,4ptp4l19624-21grep12:10:153
2847191390,4ptp4l16624-21cpuspeed10:55:133
2847191390,4ptp4l0-21swapper/312:22:533
2847191390,4ptp4l0-21swapper/312:05:163
2847191390,4ptp4l0-21swapper/311:41:573
2847191390,4ptp4l0-21swapper/310:42:243
2847191390,4ptp4l0-21swapper/310:15:293
2847191390,4ptp4l0-21swapper/309:06:293
2847191390,4ptp4l0-21swapper/308:45:053
2847191390,4ptp4l0-21swapper/308:40:223
2847191390,4ptp4l0-21swapper/308:27:543
2847191390,4ptp4l0-21swapper/307:53:433
2847191390,4ptp4l0-21swapper/307:15:563
2847191390,4ptp4l0-21swapper/211:55:522
2847191390,4ptp4l0-21swapper/211:11:072
2847191390,4ptp4l0-21swapper/210:00:512
2847191390,4ptp4l0-21swapper/111:48:201
2847191390,4ptp4l0-21swapper/111:40:121
2847191390,4ptp4l0-21swapper/110:42:261
2847191390,4ptp4l0-21swapper/110:33:041
2847191390,4ptp4l0-21swapper/110:02:171
2847191390,4ptp4l0-21swapper/108:15:041
2847191390,4ptp4l0-21swapper/012:35:150
2847191390,4ptp4l0-21swapper/011:20:210
2847191390,4ptp4l0-21swapper/010:33:350
2847191390,4ptp4l0-21swapper/010:07:550
2847191390,4ptp4l0-21swapper/010:03:230
2847191390,3ptp4l5658-21/usr/sbin/munin08:10:250
2847191390,3ptp4l1198-21meminfo10:20:211
2847191390,3ptp4l1165-21/usr/sbin/munin09:10:250
2847191390,3ptp4l0-21swapper/310:45:493
2847191390,3ptp4l0-21swapper/309:47:453
2847191390,3ptp4l0-21swapper/308:52:483
2847191390,3ptp4l0-21swapper/008:00:530
2847191380,4ptp4l0-21swapper/312:01:563
2847191380,4ptp4l0-21swapper/311:58:513
2847191380,4ptp4l0-21swapper/311:31:303
2847191380,4ptp4l0-21swapper/310:13:583
2847191380,4ptp4l0-21swapper/308:24:543
2847191380,3ptp4l0-21swapper/311:48:393
2847191380,3ptp4l0-21swapper/311:27:253
2847191380,3ptp4l0-21swapper/310:53:273
2847191380,3ptp4l0-21swapper/309:30:143
2847191380,3ptp4l0-21swapper/112:36:171
2847191380,3ptp4l0-21swapper/011:25:230
2847191380,3ptp4l0-21swapper/010:25:400
2847191370,3ptp4l0-21swapper/312:30:233
2847191370,3ptp4l0-21swapper/312:26:503
2847191370,3ptp4l0-21swapper/311:17:393
2847191370,3ptp4l0-21swapper/311:07:063
2847191370,3ptp4l0-21swapper/310:39:033
2847191370,3ptp4l0-21swapper/309:27:043
2847191360,3ptp4l0-21swapper/312:37:073
2847191350,3ptp4l0-21swapper/311:38:273
2847191340,7ptp4l0-21swapper/311:51:383
2847191320,3ptp4l0-21swapper/310:33:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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