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2025-12-11 - 23:56
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Thu Dec 11, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2695421660,7sleep02676399cyclictest08:20:000
126692770,5sleep20-21swapper/210:05:242
2847191610,3ptp4l0-21swapper/007:35:210
2847191600,20ptp4l0-21swapper/009:20:590
2847191590,5ptp4l0-21swapper/107:20:221
2847191590,4ptp4l30307-21hddtemp_smartct09:35:171
2847191590,4ptp4l0-21swapper/111:35:191
2847191590,3ptp4l0-21swapper/311:35:283
2847191580,4ptp4l0-21swapper/311:13:513
2847191580,4ptp4l0-21swapper/208:50:362
2847191580,3ptp4l0-21swapper/108:20:211
2847191580,3ptp4l0-21swapper/108:20:211
2847191570,3ptp4l0-21swapper/111:15:301
2847191560,4ptp4l0-21swapper/211:40:292
2847191550,4ptp4l0-21swapper/210:18:182
2847191550,4ptp4l0-21swapper/111:27:471
2847191550,3ptp4l2676399cyclictest09:26:440
2847191550,3ptp4l0-21swapper/207:32:342
2847191540,5ptp4l0-21swapper/212:39:172
2847191540,5ptp4l0-21swapper/007:08:120
2847191540,4ptp4l0-21swapper/211:38:592
2847191540,4ptp4l0-21swapper/210:46:182
2847191540,4ptp4l0-21swapper/208:21:332
2847191540,4ptp4l0-21swapper/208:21:332
2847191540,3ptp4l0-21swapper/209:28:092
2847191530,5ptp4l0-21swapper/207:54:302
2847191530,4ptp4l0-21swapper/311:48:333
2847191530,4ptp4l0-21swapper/209:22:302
2847191530,3ptp4l0-21swapper/210:43:382
26764995325,7cyclictest25-21ksoftirqd/108:27:181
26764995324,10cyclictest25-21ksoftirqd/111:05:281
26764995322,4cyclictest25-21ksoftirqd/109:30:011
2847191520,4ptp4l0-21swapper/212:11:172
2847191520,4ptp4l0-21swapper/211:19:232
2847191520,4ptp4l0-21swapper/208:42:462
2847191520,4ptp4l0-21swapper/208:05:512
2847191520,4ptp4l0-21swapper/207:38:182
2847191520,4ptp4l0-21swapper/110:25:191
26764995227,4cyclictest25-21ksoftirqd/111:10:421
26764995225,7cyclictest25-21ksoftirqd/107:29:131
26764995225,4cyclictest25-21ksoftirqd/109:45:181
26764995221,3cyclictest25-21ksoftirqd/109:50:511
2847191510,4ptp4l0-21swapper/308:05:413
2847191510,4ptp4l0-21swapper/207:56:552
2847191510,3ptp4l0-21swapper/207:20:142
26764995129,7cyclictest25-21ksoftirqd/112:13:531
26764995128,6cyclictest25-21ksoftirqd/110:33:581
26764995128,6cyclictest25-21ksoftirqd/110:33:581
26764995128,11cyclictest25-21ksoftirqd/110:10:001
26764995124,7cyclictest25-21ksoftirqd/109:15:291
2847191500,4ptp4l0-21swapper/311:04:163
2847191500,4ptp4l0-21swapper/212:21:352
2847191500,4ptp4l0-21swapper/210:23:512
2847191500,4ptp4l0-21swapper/111:30:031
2847191500,11ptp4l0-21swapper/210:54:222
26764995025,3cyclictest25-21ksoftirqd/110:00:161
26764995024,6cyclictest25-21ksoftirqd/110:58:471
26764995024,3cyclictest25-21ksoftirqd/112:27:451
26764995020,4cyclictest25-21ksoftirqd/111:05:011
2847191490,4ptp4l0-21swapper/111:22:201
26764994926,7cyclictest25-21ksoftirqd/110:10:221
26764994925,6cyclictest25-21ksoftirqd/108:50:011
26764994925,6cyclictest25-21ksoftirqd/108:39:261
26764994924,7cyclictest25-21ksoftirqd/108:55:281
26764994921,7cyclictest25-21ksoftirqd/109:10:191
26764994920,8cyclictest25-21ksoftirqd/109:30:181
26764994918,4cyclictest25-21ksoftirqd/109:55:281
2847191480,9ptp4l0-21swapper/309:15:173
2847191480,4ptp4l0-21swapper/112:16:081
2847191480,4ptp4l0-21swapper/112:16:081
2847191480,4ptp4l0-21swapper/107:46:281
2847191480,4ptp4l0-21swapper/107:46:281
2847191480,3ptp4l0-21swapper/310:57:043
2847191480,3ptp4l0-21swapper/112:31:201
2676499487,3cyclictest25-21ksoftirqd/108:30:591
26764994825,6cyclictest25-21ksoftirqd/109:43:491
26764994824,7cyclictest25-21ksoftirqd/107:35:241
26764994823,6cyclictest25-21ksoftirqd/108:15:251
26764994822,4cyclictest25-21ksoftirqd/111:50:231
26764994822,4cyclictest25-21ksoftirqd/108:00:011
26764994818,4cyclictest25-21ksoftirqd/108:55:001
2847191470,5ptp4l28066-21apt-get11:50:143
2847191470,10ptp4l0-21swapper/011:41:450
26764994722,6cyclictest25-21ksoftirqd/108:08:551
26764994717,3cyclictest25-21ksoftirqd/107:54:251
26764994715,11cyclictest25-21ksoftirqd/108:00:191
2847191460,8ptp4l0-21swapper/207:05:122
26764994623,7cyclictest25-21ksoftirqd/110:41:561
26764994620,3cyclictest25-21ksoftirqd/112:05:151
26764994619,4cyclictest25-21ksoftirqd/109:20:241
2847191450,9ptp4l0-21swapper/208:03:022
2847191450,4ptp4l13658-21apt-get09:00:132
26765994531,12cyclictest33-21ksoftirqd/208:50:012
26764994516,8cyclictest25-21ksoftirqd/107:10:261
2847191440,9ptp4l0-21swapper/210:13:212
2847191440,9ptp4l0-21swapper/208:39:182
2847191440,5ptp4l24183-21apt-get08:12:251
2847191440,5ptp4l0-21swapper/211:30:132
2847191440,4ptp4l0-21swapper/010:50:270
2847191440,4ptp4l0-21swapper/007:25:180
2847191440,3ptp4l0-21swapper/212:08:382
26764994438,3cyclictest25-21ksoftirqd/112:40:011
26764994415,6cyclictest25-21ksoftirqd/111:55:201
2847191430,9ptp4l0-21swapper/212:32:302
2847191430,9ptp4l0-21swapper/209:57:202
2847191430,8ptp4l0-21swapper/209:19:172
2847191430,6ptp4l0-21swapper/311:55:123
2847191430,4ptp4l18756-21df_inode10:20:160
2847191430,12ptp4l9-21ksoftirqd/010:38:300
2847191430,12ptp4l0-21swapper/009:51:020
2847191430,10ptp4l0-21swapper/307:05:123
2676499437,7cyclictest25-21ksoftirqd/110:21:481
2847191420,9ptp4l0-21swapper/210:34:362
2847191420,9ptp4l0-21swapper/210:34:362
2847191420,9ptp4l0-21swapper/209:53:382
2847191420,9ptp4l0-21swapper/207:18:322
2847191420,5ptp4l8861-21hddtemp_smartct07:40:160
2847191420,4ptp4l486-21apt-get12:00:152
2847191420,4ptp4l30382-21apt-get11:55:142
2847191420,4ptp4l30032-21apt-get10:45:131
2676499425,2cyclictest25-21ksoftirqd/107:16:021
2676499424,3cyclictest25-21ksoftirqd/107:30:251
2676499420,3cyclictest121rcu_preempt12:03:091
2847191410,9ptp4l0-21swapper/211:53:292
2847191410,9ptp4l0-21swapper/209:40:292
2847191410,9ptp4l0-21swapper/009:32:050
2847191410,5ptp4l4336-21cstates08:40:160
2847191410,5ptp4l30105-21iostat08:25:200
2847191410,5ptp4l17596-21if_err_enp4s012:35:200
2847191410,5ptp4l0-21swapper/312:25:223
2847191410,5ptp4l0-21swapper/307:55:233
2847191410,5ptp4l0-21swapper/212:25:292
2847191410,5ptp4l0-21swapper/107:05:311
2847191410,5ptp4l0-21swapper/011:10:250
2847191410,5ptp4l0-21swapper/009:05:240
2847191410,4ptp4l29751-21users11:50:290
2847191410,4ptp4l14620-21meminfo09:00:201
2847191410,4ptp4l10650-21ntp_states11:10:232
2847191410,4ptp4l0-21swapper/112:24:201
2847191410,4ptp4l0-21swapper/011:55:210
2847191410,4ptp4l0-21swapper/011:35:240
2847191410,4ptp4l0-21swapper/008:50:270
2847191410,3ptp4l30347-21df_inode10:45:160
2847191410,3ptp4l2896-21apt-get12:05:143
2847191410,3ptp4l24869-21apt-get08:15:133
2847191410,3ptp4l24161-21apt-get08:12:210
2847191410,3ptp4l0-21swapper/012:05:180
2847191410,3ptp4l0-21swapper/007:20:180
2676499413,2cyclictest25-21ksoftirqd/111:47:411
26764994125,2cyclictest25-21ksoftirqd/111:41:591
2676499410,3cyclictest121rcu_preempt10:16:171
2847191400,5ptp4l0-21swapper/011:20:230
2847191400,4ptp4l9340-21diskstats08:50:163
2847191400,4ptp4l30189-21diskstats09:35:160
2847191400,4ptp4l27925-21ntp_states07:10:222
2847191400,4ptp4l0-21swapper/311:15:363
2847191400,4ptp4l0-21swapper/308:24:073
2847191400,4ptp4l0-21swapper/308:24:073
2847191400,4ptp4l0-21swapper/211:22:432
2847191400,4ptp4l0-21swapper/211:02:182
2847191400,4ptp4l0-21swapper/210:00:212
2847191400,4ptp4l0-21swapper/209:33:042
2847191400,4ptp4l0-21swapper/208:16:532
2847191400,4ptp4l0-21swapper/208:14:052
2847191400,4ptp4l0-21swapper/110:50:171
2847191400,4ptp4l0-21swapper/012:10:070
2847191400,4ptp4l0-21swapper/012:00:180
2847191400,4ptp4l0-21swapper/011:15:410
2847191400,4ptp4l0-21swapper/011:05:150
2847191400,4ptp4l0-21swapper/010:06:270
2847191400,4ptp4l0-21swapper/009:55:070
2847191400,4ptp4l0-21swapper/009:43:050
2847191400,4ptp4l0-21swapper/009:12:280
2847191400,4ptp4l0-21swapper/008:58:160
2847191400,4ptp4l0-21swapper/008:37:340
2847191400,4ptp4l0-21swapper/008:05:320
2847191400,4ptp4l0-21swapper/008:01:350
2847191400,4ptp4l0-21swapper/007:10:000
2847191400,3ptp4l7217-21apt-get11:05:123
2847191400,3ptp4l6936-21hddtemp_smartct08:45:180
2847191400,3ptp4l523-21ntp_states08:30:230
2847191400,3ptp4l31447-21apt-get07:20:123
2847191400,3ptp4l28843-21ntp_states10:40:230
2847191400,3ptp4l26335-21memory10:35:211
2847191400,3ptp4l23380-21diskstats10:30:160
2847191400,3ptp4l23380-21diskstats10:30:160
2847191400,3ptp4l15934-21iostat_ios07:55:190
2847191400,3ptp4l14927-21ntp_states10:10:220
2847191400,3ptp4l0-21swapper/207:43:322
2676499404,3cyclictest25-21ksoftirqd/109:05:141
2847191390,5ptp4l27216-21grep08:20:120
2847191390,5ptp4l27216-21grep08:20:120
2847191390,5ptp4l0-21swapper/312:00:223
2847191390,5ptp4l0-21swapper/310:17:503
2847191390,5ptp4l0-21swapper/010:55:040
2847191390,4ptp4l41-21ksoftirqd/309:33:513
2847191390,4ptp4l26055-21df_inode11:45:160
2847191390,4ptp4l21705-21/usr/sbin/munin10:25:220
2847191390,4ptp4l19958-21unixbench_singl09:10:313
2847191390,4ptp4l0-21swapper/310:45:093
2847191390,4ptp4l0-21swapper/310:35:253
2847191390,4ptp4l0-21swapper/310:23:483
2847191390,4ptp4l0-21swapper/309:43:083
2847191390,4ptp4l0-21swapper/309:22:413
2847191390,4ptp4l0-21swapper/309:05:413
2847191390,4ptp4l0-21swapper/307:50:153
2847191390,4ptp4l0-21swapper/307:15:163
2847191390,4ptp4l0-21swapper/212:15:402
2847191390,4ptp4l0-21swapper/212:15:402
2847191390,4ptp4l0-21swapper/211:48:052
2847191390,4ptp4l0-21swapper/211:05:262
2847191390,4ptp4l0-21swapper/210:56:392
2847191390,4ptp4l0-21swapper/210:35:242
2847191390,4ptp4l0-21swapper/209:35:542
2847191390,4ptp4l0-21swapper/209:11:362
2847191390,4ptp4l0-21swapper/209:06:072
2847191390,4ptp4l0-21swapper/208:58:142
2847191390,4ptp4l0-21swapper/208:32:112
2847191390,4ptp4l0-21swapper/207:49:062
2847191390,4ptp4l0-21swapper/207:49:052
2847191390,4ptp4l0-21swapper/108:41:071
2847191390,4ptp4l0-21swapper/012:26:400
2847191390,4ptp4l0-21swapper/012:20:270
2847191390,4ptp4l0-21swapper/012:15:070
2847191390,4ptp4l0-21swapper/012:15:070
2847191390,4ptp4l0-21swapper/011:30:080
2847191390,4ptp4l0-21swapper/011:25:120
2847191390,4ptp4l0-21swapper/011:00:130
2847191390,4ptp4l0-21swapper/010:15:200
2847191390,4ptp4l0-21swapper/010:00:050
2847191390,4ptp4l0-21swapper/009:45:170
2847191390,4ptp4l0-21swapper/009:17:560
2847191390,4ptp4l0-21swapper/009:00:140
2847191390,4ptp4l0-21swapper/007:50:070
2847191390,4ptp4l0-21swapper/007:31:150
2847191390,4ptp4l0-21swapper/007:17:450
2847191390,3ptp4l15169-21hddtemp_smartct12:30:160
2847191390,3ptp4l14289-21apt-get12:30:043
2847191390,3ptp4l11043-21df_inode07:45:150
2847191390,3ptp4l11043-21df_inode07:45:150
2847191390,3ptp4l0-21swapper/210:27:042
2847191390,3ptp4l0-21swapper/208:27:542
26764993933,3cyclictest25-21ksoftirqd/107:45:001
2847191380,4ptp4l0-21swapper/312:21:523
2847191380,4ptp4l0-21swapper/312:17:563
2847191380,4ptp4l0-21swapper/312:17:563
2847191380,4ptp4l0-21swapper/312:14:563
2847191380,4ptp4l0-21swapper/311:20:273
2847191380,4ptp4l0-21swapper/310:40:273
2847191380,4ptp4l0-21swapper/310:30:293
2847191380,4ptp4l0-21swapper/310:30:293
2847191380,4ptp4l0-21swapper/309:49:103
2847191380,4ptp4l0-21swapper/308:26:493
2847191380,4ptp4l0-21swapper/308:13:593
2847191380,4ptp4l0-21swapper/307:10:263
2847191380,4ptp4l0-21swapper/207:26:052
2847191380,3ptp4l1293-21snmpd11:43:363
2847191380,3ptp4l0-21swapper/312:39:143
2847191380,3ptp4l0-21swapper/310:14:343
2847191380,3ptp4l0-21swapper/309:36:383
2847191380,3ptp4l0-21swapper/211:26:482
2847191370,4ptp4l0-21swapper/310:50:403
2847191370,4ptp4l0-21swapper/310:28:233
2847191370,4ptp4l0-21swapper/310:00:563
2847191370,4ptp4l0-21swapper/309:58:123
2847191370,4ptp4l0-21swapper/309:52:103
2847191370,4ptp4l0-21swapper/309:25:343
2847191370,4ptp4l0-21swapper/308:58:053
2847191370,4ptp4l0-21swapper/308:40:013
2847191370,4ptp4l0-21swapper/307:35:153
2847191370,4ptp4l0-21swapper/209:48:192
2847191370,3ptp4l0-21swapper/308:38:193
2847191370,3ptp4l0-21swapper/308:30:053
2847191360,3ptp4l0-21swapper/311:25:533
2847191350,3ptp4l0-21swapper/311:33:113
2847191350,3ptp4l0-21swapper/310:06:503
2847191350,2ptp4l0-21swapper/309:03:273
2847191340,5ptp4l0-21swapper/308:00:203
2847191340,4ptp4l0-21swapper/308:47:203
2847191310,3ptp4l0-21swapper/307:42:593
26766992520,3cyclictest41-21ksoftirqd/307:32:333
2847191240,4ptp4l0-21swapper/307:47:573
2847191240,4ptp4l0-21swapper/307:47:573
2847191240,4ptp4l0-21swapper/307:26:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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