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2026-04-15 - 15:47
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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 Wed Apr 15, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1605721830,5sleep016059-21sh07:08:380
2497321810,5sleep224977-21sort07:09:452
708221640,3sleep30-21swapper/307:09:023
319512940,3sleep231908-21sh07:13:582
110322850,3sleep311040-21sort07:13:303
126282730,5sleep112625-21sort07:13:321
165122620,5sleep10-21swapper/111:00:271
134491620,4ptp4l8492-21timerandwakeup07:15:251
134491590,4ptp4l14527-21cat09:50:011
134491590,4ptp4l0-21swapper/110:20:231
134491590,3ptp4l0-21swapper/308:35:183
134491590,3ptp4l0-21swapper/207:45:282
742099582,12cyclictest13059-21sh07:11:570
45112580,8sleep1742399cyclictest11:45:171
222692580,3sleep10-21swapper/112:24:121
742099567,6cyclictest0-21swapper/011:10:140
134491560,4ptp4l0-21swapper/312:18:063
134491560,4ptp4l0-21swapper/308:45:263
134491560,4ptp4l0-21swapper/212:05:322
134491550,4ptp4l0-21swapper/112:16:091
134491540,4ptp4l28254-21tee07:09:201
134491540,4ptp4l0-21swapper/312:33:413
742099532,7cyclictest388-21gmain11:55:120
742099530,11cyclictest14373-21ps12:05:240
134491530,5ptp4l0-21swapper/112:11:041
134491530,1ptp4l0-21swapper/311:55:203
134491530,13ptp4l0-21swapper/309:20:193
742099525,6cyclictest25236-21grep12:30:130
742099525,6cyclictest0-21swapper/008:55:280
742099523,5cyclictest2623-21ls10:30:260
742099521,10cyclictest1437-21needreboot09:20:190
134491520,4ptp4l0-21swapper/208:49:512
134491520,4ptp4l0-21swapper/110:55:201
134491520,4ptp4l0-21swapper/110:40:001
134491520,4ptp4l0-21swapper/110:30:271
134491520,3ptp4l0-21swapper/108:26:351
742099515,7cyclictest0-21swapper/011:45:220
742099513,6cyclictest2864-21df_abs08:15:150
134491510,9ptp4l0-21swapper/209:05:032
134491510,4ptp4l0-21swapper/308:18:533
134491510,4ptp4l0-21swapper/212:12:222
134491510,3ptp4l0-21swapper/308:30:313
134491510,3ptp4l0-21swapper/209:19:052
742099505,6cyclictest30674-21wc11:30:270
742099505,11cyclictest0-21swapper/010:00:220
742099502,6cyclictest9-21ksoftirqd/008:35:130
134491500,4ptp4l0-21swapper/308:57:293
742099497,10cyclictest0-21swapper/009:10:230
742099496,5cyclictest0-21swapper/009:50:120
742099495,6cyclictest0-21swapper/010:35:280
134491490,4ptp4l0-21swapper/312:22:573
134491490,4ptp4l0-21swapper/110:03:511
134491490,3ptp4l0-21swapper/109:53:461
134491490,10ptp4l0-21swapper/109:12:021
7426994842,3cyclictest31314-21apt-key11:35:003
742099482,6cyclictest0-21swapper/010:10:250
742099481,6cyclictest9-21ksoftirqd/011:20:250
134491480,4ptp4l0-21swapper/110:45:461
134491480,16ptp4l0-21swapper/210:25:472
742099476,6cyclictest0-21swapper/008:50:220
742099475,10cyclictest0-21swapper/011:05:270
742099470,11cyclictest16069-21cat11:00:230
134491470,4ptp4l0-21swapper/209:33:282
134491470,3ptp4l0-21swapper/211:21:282
742499461,7cyclictest0-21swapper/207:30:152
742499461,7cyclictest0-21swapper/207:30:152
742099467,6cyclictest18542-21systemctl09:55:240
134691460,10getstats0-21swapper/011:15:280
134491460,4ptp4l0-21swapper/312:38:013
134491460,3ptp4l0-21swapper/211:29:272
7426994540,3cyclictest41-21ksoftirqd/307:59:593
7426994534,9cyclictest41-21ksoftirqd/308:10:273
742099451,6cyclictest9-21ksoftirqd/010:20:160
742099450,15cyclictest8264-21cat10:45:150
134491450,5ptp4l24308-21apt-get11:20:101
134491450,4ptp4l0-21swapper/307:30:233
134491450,4ptp4l0-21swapper/307:30:233
134491450,4ptp4l0-21swapper/211:51:122
134491450,4ptp4l0-21swapper/109:43:021
134491450,3ptp4l0-21swapper/308:20:183
134491450,3ptp4l0-21swapper/207:55:362
134491450,11ptp4l0-21swapper/112:37:591
134491450,10ptp4l0-21swapper/210:40:502
7426994437,3cyclictest41-21ksoftirqd/309:45:013
7426994433,9cyclictest41-21ksoftirqd/308:50:263
742699443,2cyclictest121rcu_preempt10:17:113
742699441,10cyclictest41-21ksoftirqd/311:00:403
7426994410,4cyclictest41-21ksoftirqd/307:40:413
742099446,6cyclictest0-21swapper/011:50:140
742099446,11cyclictest0-21swapper/008:21:410
134491440,9ptp4l0-21swapper/212:36:542
134491440,9ptp4l0-21swapper/210:55:552
134491440,7ptp4l742399cyclictest08:50:111
134491440,5ptp4l0-21swapper/312:25:133
134491440,4ptp4l0-21swapper/211:44:392
134491440,3ptp4l0-21swapper/107:49:251
134491440,3ptp4l0-21swapper/107:35:201
134491440,11ptp4l0-21swapper/307:27:563
7426994338,3cyclictest41-21ksoftirqd/309:00:123
7426994332,9cyclictest41-21ksoftirqd/309:55:253
7426994312,5cyclictest41-21ksoftirqd/307:49:043
742099432,6cyclictest29177-21ntp_states08:00:240
742099432,6cyclictest29177-21ntp_states08:00:240
134691430,10getstats0-21swapper/008:32:170
134491430,9ptp4l0-21swapper/212:22:082
134491430,9ptp4l0-21swapper/209:46:442
134491430,4ptp4l0-21swapper/312:04:103
134491430,4ptp4l0-21swapper/111:52:481
134491430,4ptp4l0-21swapper/109:23:131
134491430,10ptp4l0-21swapper/307:16:543
134491430,10ptp4l0-21swapper/212:00:432
7426994220,3cyclictest41-21ksoftirqd/309:45:133
7426994212,5cyclictest41-21ksoftirqd/310:40:273
7426994212,3cyclictest41-21ksoftirqd/310:24:203
742099426,7cyclictest0-21swapper/010:55:220
134691420,10getstats0-21swapper/012:37:040
134491420,9ptp4l0-21swapper/212:17:232
134491420,9ptp4l0-21swapper/211:59:252
134491420,9ptp4l0-21swapper/207:28:082
134491420,9ptp4l0-21swapper/007:57:170
134491420,5ptp4l0-21swapper/209:55:182
134491420,5ptp4l0-21swapper/108:15:291
134491420,5ptp4l0-21swapper/009:40:250
134491420,5ptp4l0-21swapper/009:30:100
134491420,5ptp4l0-21swapper/007:15:240
134491420,4ptp4l212-21systemd-journal08:41:452
134491420,4ptp4l21195-21ls11:10:261
134491420,10ptp4l0-21swapper/209:03:302
742699418,4cyclictest41-21ksoftirqd/308:08:373
742699417,8cyclictest41-21ksoftirqd/309:35:153
7426994135,3cyclictest41-21ksoftirqd/312:05:263
134691410,11getstats0-21swapper/009:09:130
134691410,10getstats0-21swapper/010:43:190
134691410,10getstats0-21swapper/009:39:170
134691410,10getstats0-21swapper/007:29:210
134491410,5ptp4l27184-21diskstats11:25:141
134491410,5ptp4l24128-21meminfo07:50:202
134491410,5ptp4l12182-21mailstats12:00:241
134491410,5ptp4l0-21swapper/310:30:163
134491410,5ptp4l0-21swapper/211:00:132
134491410,5ptp4l0-21swapper/210:32:102
134491410,5ptp4l0-21swapper/108:35:171
134491410,5ptp4l0-21swapper/012:26:060
134491410,5ptp4l0-21swapper/011:40:160
134491410,5ptp4l0-21swapper/007:42:370
134491410,4ptp4l4858-21ls10:35:273
134491410,4ptp4l3942-21meminfo09:25:191
134491410,4ptp4l31618-21ntp_states09:15:231
134491410,4ptp4l27824-21meminfo11:25:203
134491410,4ptp4l11957-21apt-get09:45:030
134491410,4ptp4l0-21swapper/308:42:043
134491410,4ptp4l0-21swapper/210:12:072
134491410,4ptp4l0-21swapper/208:21:462
134491410,4ptp4l0-21swapper/111:31:561
134491410,4ptp4l0-21swapper/109:05:121
134491410,4ptp4l0-21swapper/109:02:031
134491410,4ptp4l0-21swapper/108:55:221
134491410,4ptp4l0-21swapper/010:50:190
134491410,3ptp4l3327-21users11:40:301
134491410,3ptp4l28063-21apt-get08:00:132
134491410,3ptp4l28063-21apt-get08:00:132
134491410,3ptp4l13167-21apt-get12:05:121
134491410,10ptp4l0-21swapper/110:40:271
742699403,1cyclictest0-21swapper/311:37:273
742699403,1cyclictest0-21swapper/311:37:263
46198400,14rtkit-daemon1602-21sendmail-mta10:50:483
134491400,6ptp4l16800-21cat07:35:172
134491400,5ptp4l0-21swapper/312:10:183
134491400,5ptp4l0-21swapper/311:20:123
134491400,5ptp4l0-21swapper/309:15:293
134491400,5ptp4l0-21swapper/211:30:242
134491400,5ptp4l0-21swapper/207:40:122
134491400,5ptp4l0-21swapper/012:00:180
134491400,4ptp4l7990-21/usr/sbin/munin09:35:151
134491400,4ptp4l7802-21iostat_ios08:25:190
134491400,4ptp4l32637-21/usr/sbin/munin08:10:200
134491400,4ptp4l32057-21memory10:25:211
134491400,4ptp4l30788-21hddtemp_smartct08:05:161
134491400,4ptp4l27602-21ntp_states10:15:211
134491400,4ptp4l26174-21hddtemp_smartct07:55:171
134491400,4ptp4l23657-21users11:15:262
134491400,4ptp4l23535-21/usr/sbin/munin12:25:211
134491400,4ptp4l22934-21meminfo11:15:171
134491400,4ptp4l17790-21iostat09:55:181
134491400,4ptp4l17515-21apt-get12:15:020
134491400,4ptp4l15765-21diskstats12:10:130
134491400,4ptp4l15761-21/usr/sbin/munin08:40:290
134491400,4ptp4l0-21swapper/311:50:223
134491400,4ptp4l0-21swapper/309:50:153
134491400,4ptp4l0-21swapper/307:36:473
134491400,4ptp4l0-21swapper/212:33:582
134491400,4ptp4l0-21swapper/211:39:502
134491400,4ptp4l0-21swapper/211:39:502
134491400,4ptp4l0-21swapper/211:10:192
134491400,4ptp4l0-21swapper/210:53:592
134491400,4ptp4l0-21swapper/209:11:282
134491400,4ptp4l0-21swapper/208:06:032
134491400,4ptp4l0-21swapper/207:18:182
134491400,4ptp4l0-21swapper/109:30:221
134491400,4ptp4l0-21swapper/107:27:581
134491400,4ptp4l0-21swapper/011:30:010
134491400,4ptp4l0-21swapper/010:05:060
134491400,4ptp4l0-21swapper/007:39:360
134491400,4ptp4l0-21swapper/007:31:110
134491400,4ptp4l0-21swapper/007:31:110
134491400,3ptp4l330-21ntp_states11:35:240
134491400,3ptp4l330-21ntp_states11:35:230
7426993934,3cyclictest41-21ksoftirqd/311:20:003
7426993934,3cyclictest41-21ksoftirqd/310:45:123
7426993934,3cyclictest41-21ksoftirqd/308:00:583
7426993934,3cyclictest41-21ksoftirqd/308:00:583
7426993912,7cyclictest41-21ksoftirqd/310:14:453
134491390,5ptp4l0-21swapper/012:20:160
134491390,5ptp4l0-21swapper/008:05:230
134491390,5ptp4l0-21swapper/007:45:150
134491390,4ptp4l0-21swapper/311:09:583
134491390,4ptp4l0-21swapper/310:27:393
134491390,4ptp4l0-21swapper/310:00:133
134491390,4ptp4l0-21swapper/309:10:153
134491390,4ptp4l0-21swapper/308:26:053
134491390,4ptp4l0-21swapper/307:50:503
134491390,4ptp4l0-21swapper/211:45:182
134491390,4ptp4l0-21swapper/210:35:202
134491390,4ptp4l0-21swapper/210:20:482
134491390,4ptp4l0-21swapper/210:17:242
134491390,4ptp4l0-21swapper/210:06:542
134491390,4ptp4l0-21swapper/210:00:122
134491390,4ptp4l0-21swapper/209:50:112
134491390,4ptp4l0-21swapper/209:42:042
134491390,4ptp4l0-21swapper/209:35:282
134491390,4ptp4l0-21swapper/209:28:042
134491390,4ptp4l0-21swapper/208:56:592
134491390,4ptp4l0-21swapper/208:53:592
134491390,4ptp4l0-21swapper/208:10:252
134491390,4ptp4l0-21swapper/108:45:181
134491390,4ptp4l0-21swapper/010:27:180
134491390,4ptp4l0-21swapper/009:25:000
134491390,4ptp4l0-21swapper/009:15:080
134491390,4ptp4l0-21swapper/009:02:470
134491390,4ptp4l0-21swapper/007:51:290
134491390,4ptp4l0-21swapper/007:22:350
134491390,3ptp4l8552-21apt-get11:55:111
134491390,3ptp4l22587-21apt-get12:25:132
134491390,3ptp4l0-21swapper/311:40:243
134491390,3ptp4l0-21swapper/110:50:101
7426993834,2cyclictest41-21ksoftirqd/309:26:573
7426993833,3cyclictest41-21ksoftirqd/307:24:593
7423993833,3cyclictest25-21ksoftirqd/108:04:591
7423993833,3cyclictest25-21ksoftirqd/108:04:591
134491380,4ptp4l731-21if_enp4s008:10:161
134491380,4ptp4l28104-21/usr/sbin/munin10:15:250
134491380,4ptp4l25860-21missed_timers12:30:191
134491380,4ptp4l0-21swapper/310:55:123
134491380,4ptp4l0-21swapper/310:05:473
134491380,4ptp4l0-21swapper/210:45:052
134491380,4ptp4l0-21swapper/209:20:522
134491380,4ptp4l0-21swapper/208:25:292
134491380,4ptp4l0-21swapper/208:15:512
134491380,4ptp4l0-21swapper/111:35:171
134491380,4ptp4l0-21swapper/111:35:161
134491380,4ptp4l0-21swapper/108:32:211
134491380,4ptp4l0-21swapper/107:33:531
134491380,4ptp4l0-21swapper/107:33:531
134491380,4ptp4l0-21swapper/008:45:170
134491380,3ptp4l25258-21ntp_states10:10:231
134491380,3ptp4l0-21swapper/311:47:063
134491380,3ptp4l0-21swapper/208:35:012
7426993731,3cyclictest41-21ksoftirqd/309:05:193
134491370,4ptp4l0-21swapper/309:31:493
134491370,4ptp4l0-21swapper/208:35:222
134491370,4ptp4l0-21swapper/207:21:012
134491370,4ptp4l0-21swapper/110:05:011
134491370,4ptp4l0-21swapper/108:43:381
134491370,3ptp4l0-21swapper/111:05:041
134491370,3ptp4l0-21swapper/108:20:291
134491370,3ptp4l0-21swapper/107:41:471
134491370,3ptp4l0-21swapper/107:20:241
134491360,3ptp4l0-21swapper/311:15:003
134491360,3ptp4l0-21swapper/211:05:422
134491360,3ptp4l0-21swapper/107:50:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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