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2026-05-23 - 13:17
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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 Sat May 23, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1910621540,6sleep1255199cyclictest22:00:131
255399682,63cyclictest0-21swapper/321:48:263
255399670,21cyclictest17256-21/usr/sbin/munin00:15:283
255399660,21cyclictest17643-21fschecks_time20:50:253
255399660,21cyclictest17643-21fschecks_time20:50:253
134491630,4ptp4l0-21swapper/121:35:271
255399601,27cyclictest25536-21taskset23:20:463
255399600,27cyclictest21488-21taskset00:23:163
134491600,4ptp4l0-21swapper/120:50:081
134491600,4ptp4l0-21swapper/120:50:081
134491590,4ptp4l0-21swapper/221:30:182
134491590,15ptp4l32564-21apt-get19:05:122
255399580,29cyclictest14469-21man-db00:07:063
134491580,4ptp4l0-21swapper/123:53:101
134491580,3ptp4l0-21swapper/219:37:112
134491580,3ptp4l0-21swapper/023:25:160
255399570,27cyclictest23184-21taskset19:53:213
134491570,4ptp4l0-21swapper/221:51:592
255399560,28cyclictest21185-21seq23:14:063
134491560,4ptp4l0-21swapper/319:10:393
134491560,4ptp4l0-21swapper/123:14:551
134491560,3ptp4l0-21swapper/221:24:412
134491560,3ptp4l0-21swapper/200:05:232
134491560,3ptp4l0-21swapper/123:29:331
134491560,3ptp4l0-21swapper/121:00:231
134491560,3ptp4l0-21swapper/120:25:121
134491560,3ptp4l0-21swapper/022:50:080
134491550,4ptp4l0-21swapper/223:42:182
134491550,4ptp4l0-21swapper/219:47:462
255399540,28cyclictest32584-21taskset20:13:063
134491540,4ptp4l0-21swapper/220:09:242
134491540,4ptp4l0-21swapper/022:31:130
134491540,4ptp4l0-21swapper/022:12:120
134491540,3ptp4l0-21swapper/320:45:193
134491540,3ptp4l0-21swapper/119:57:591
134491540,3ptp4l0-21swapper/020:56:380
134491540,2ptp4l0-21swapper/000:15:220
69922530,4sleep00-21swapper/020:25:290
134491530,5ptp4l0-21swapper/222:23:002
134491530,4ptp4l0-21swapper/100:00:391
134491530,4ptp4l0-21swapper/019:19:070
134491520,4ptp4l0-21swapper/123:44:521
134491520,4ptp4l0-21swapper/022:55:140
134491520,3ptp4l0-21swapper/319:07:473
134491520,3ptp4l0-21swapper/219:15:102
134491520,2ptp4l0-21swapper/021:51:380
134491520,1ptp4l0-21swapper/019:13:580
255399511,29cyclictest5553-21seq21:31:443
255399511,18cyclictest15181-21df00:10:133
255399510,26cyclictest3311-21runrttasks21:27:273
134491510,4ptp4l0-21swapper/223:37:042
134491510,4ptp4l0-21swapper/221:10:392
134491510,4ptp4l0-21swapper/220:57:302
134491510,3ptp4l0-21swapper/220:17:152
134491510,3ptp4l0-21swapper/123:19:091
134491510,2ptp4l0-21swapper/022:36:390
255399500,29cyclictest32581-21seq23:37:413
255399500,27cyclictest2489-21taskset23:41:493
134491500,4ptp4l0-21swapper/223:52:412
134491500,4ptp4l0-21swapper/120:56:361
134491500,3ptp4l0-21swapper/022:16:120
255399493,22cyclictest0-21swapper/323:07:413
134491490,3ptp4l0-21swapper/121:34:031
134491490,3ptp4l0-21swapper/020:49:580
134491490,11ptp4l0-21swapper/023:02:000
134491480,8ptp4l0-21swapper/121:46:301
134491480,4ptp4l0-21swapper/100:16:451
134491480,3ptp4l0-21swapper/119:45:131
134491480,2ptp4l0-21swapper/320:00:113
134491470,4ptp4l0-21swapper/220:53:182
134491470,4ptp4l0-21swapper/220:53:182
134491470,4ptp4l0-21swapper/023:07:200
134491470,3ptp4l0-21swapper/319:57:093
134491470,3ptp4l0-21swapper/122:23:311
255399460,28cyclictest28421-21chrt21:11:093
255399460,26cyclictest23780-21taskset21:00:413
134491460,4ptp4l0-21swapper/119:52:501
134491460,3ptp4l0-21swapper/122:44:441
134491460,3ptp4l0-21swapper/122:34:551
134491460,3ptp4l0-21swapper/021:06:270
134491460,13ptp4l0-21swapper/122:17:151
134491450,4ptp4l0-21swapper/219:34:542
134491450,4ptp4l0-21swapper/123:30:151
134491450,4ptp4l0-21swapper/119:31:311
134491450,3ptp4l0-21swapper/019:21:210
255399443,39cyclictest0-21swapper/323:18:293
255399442,23cyclictest0-21swapper/300:03:283
255399440,15cyclictest134491ptp4l00:33:543
134491440,9ptp4l0-21swapper/221:49:492
134491440,9ptp4l0-21swapper/219:41:232
134491440,9ptp4l0-21swapper/023:46:100
134491440,5ptp4l0-21swapper/200:20:192
134491440,4ptp4l25885-21apt-get20:00:112
134491440,4ptp4l0-21swapper/119:11:211
134491440,4ptp4l0-21swapper/000:11:220
134491440,3ptp4l0-21swapper/119:42:331
134491440,3ptp4l0-21swapper/020:00:470
255399430,26cyclictest21271-21taskset20:55:563
134491430,9ptp4l0-21swapper/223:00:512
134491430,5ptp4l0-21swapper/221:25:102
134491430,4ptp4l0-21swapper/000:33:110
134491430,3ptp4l0-21swapper/123:03:411
134491430,3ptp4l0-21swapper/121:55:351
134491430,3ptp4l0-21swapper/121:26:431
134491420,9ptp4l0-21swapper/222:35:532
134491420,9ptp4l0-21swapper/222:03:442
134491420,5ptp4l0-21swapper/120:30:161
134491420,5ptp4l0-21swapper/019:34:490
134491420,4ptp4l2587-21apt-get19:10:122
134491420,4ptp4l17043-21hddtemp_smartct21:55:150
134491420,4ptp4l0-21swapper/220:44:432
134491420,4ptp4l0-21swapper/122:27:001
134491420,3ptp4l9767-21apt-get19:25:110
134491420,3ptp4l0-21swapper/200:15:182
134491420,3ptp4l0-21swapper/020:23:480
255399412,36cyclictest0-21swapper/321:35:293
255399410,37cyclictest28974-21apt-get21:15:123
255399410,27cyclictest579-21chrt21:21:003
255399410,27cyclictest4806-21taskset23:47:013
2552994135,4cyclictest33-21ksoftirqd/223:56:192
2550994136,3cyclictest9-21ksoftirqd/021:48:530
134491410,9ptp4l0-21swapper/223:27:072
134491410,9ptp4l0-21swapper/222:51:442
134491410,9ptp4l0-21swapper/200:26:252
134491410,5ptp4l3395-21hddtemp_smartct20:20:141
134491410,5ptp4l0-21swapper/320:20:163
134491410,5ptp4l0-21swapper/319:20:003
134491410,5ptp4l0-21swapper/300:25:283
134491410,5ptp4l0-21swapper/221:35:242
134491410,5ptp4l0-21swapper/219:50:192
134491410,5ptp4l0-21swapper/021:10:180
134491410,5ptp4l0-21swapper/019:09:470
134491410,5ptp4l0-21swapper/000:00:150
134491410,4ptp4l3567-21iostat_ios23:45:181
134491410,4ptp4l16979-21df_inode19:40:150
134491410,4ptp4l16923-21apt-get23:05:121
134491410,4ptp4l15476-21ntp_states19:35:213
134491410,4ptp4l0-21swapper/219:20:062
134491410,4ptp4l0-21swapper/023:50:030
134491410,3ptp4l5093-21/usr/sbin/munin22:40:290
134491410,3ptp4l23526-21apt-get22:10:111
134491410,3ptp4l1756-21ntp_states23:40:220
134491410,3ptp4l16677-21apt-get19:40:123
134491410,3ptp4l14974-21apt-get00:10:111
134491410,3ptp4l0-21swapper/221:08:002
134491410,3ptp4l0-21swapper/023:23:130
134491410,3ptp4l0-21swapper/023:15:100
134491410,3ptp4l0-21swapper/020:37:000
134491410,10ptp4l0-21swapper/021:38:200
255399400,25cyclictest30174-21seq20:09:243
2551994035,3cyclictest25-21ksoftirqd/123:40:001
134491400,9ptp4l0-21swapper/221:03:062
134491400,7ptp4l0-21swapper/119:09:401
134491400,5ptp4l0-21swapper/319:47:593
134491400,5ptp4l0-21swapper/319:30:193
134491400,5ptp4l0-21swapper/300:35:113
134491400,5ptp4l0-21swapper/121:05:231
134491400,5ptp4l0-21swapper/120:10:151
134491400,5ptp4l0-21swapper/021:15:180
134491400,5ptp4l0-21swapper/019:55:150
134491400,4ptp4l8420-21meminfo19:20:213
134491400,4ptp4l7666-21df22:45:130
134491400,4ptp4l30919-21hddtemp_smartct22:25:150
134491400,4ptp4l29921-21meminfo21:15:201
134491400,4ptp4l29090-21memory22:20:210
134491400,4ptp4l17565-21meminfo21:55:192
134491400,4ptp4l0-21swapper/319:25:273
134491400,4ptp4l0-21swapper/223:11:432
134491400,4ptp4l0-21swapper/222:19:122
134491400,4ptp4l0-21swapper/219:28:352
134491400,4ptp4l0-21swapper/200:31:142
134491400,4ptp4l0-21swapper/123:55:221
134491400,4ptp4l0-21swapper/122:40:001
134491400,4ptp4l0-21swapper/023:10:170
134491400,4ptp4l0-21swapper/021:00:020
134491400,4ptp4l0-21swapper/019:53:110
134491400,3ptp4l8428-21iostat_ios23:55:173
134491400,3ptp4l7459-21apt-get22:45:111
134491400,3ptp4l5098-21apt-get19:15:131
134491400,3ptp4l19590-21apt-get00:20:121
134491400,3ptp4l10489-21diskstats00:00:162
134491400,3ptp4l10188-21hddtemp_smartct22:50:171
134491400,3ptp4l10000-21ls21:40:240
134491400,3ptp4l0-21swapper/022:09:290
134491390,5ptp4l13097-21sed20:40:170
134491390,5ptp4l0-21swapper/120:49:011
134491390,5ptp4l0-21swapper/021:31:240
134491390,4ptp4l30246-21apt-get20:10:022
134491390,4ptp4l28629-21df23:30:130
134491390,4ptp4l0-21swapper/323:25:133
134491390,4ptp4l0-21swapper/321:40:153
134491390,4ptp4l0-21swapper/321:05:243
134491390,4ptp4l0-21swapper/223:48:352
134491390,4ptp4l0-21swapper/223:33:412
134491390,4ptp4l0-21swapper/223:20:252
134491390,4ptp4l0-21swapper/223:06:272
134491390,4ptp4l0-21swapper/222:13:412
134491390,4ptp4l0-21swapper/220:46:322
134491390,4ptp4l0-21swapper/220:35:012
134491390,4ptp4l0-21swapper/220:30:132
134491390,4ptp4l0-21swapper/219:55:182
134491390,4ptp4l0-21swapper/121:20:221
134491390,4ptp4l0-21swapper/100:07:421
134491390,4ptp4l0-21swapper/023:55:200
134491390,4ptp4l0-21swapper/021:20:220
134491390,4ptp4l0-21swapper/020:31:460
134491390,4ptp4l0-21swapper/020:15:190
134491390,4ptp4l0-21swapper/000:20:230
134491390,3ptp4l8637-21ls20:30:213
134491390,3ptp4l3278-21diskstats20:20:132
134491390,3ptp4l29129-21meminfo20:05:211
134491390,3ptp4l23418-21timerwakeupswit00:25:271
134491390,3ptp4l20050-21ntp_states22:00:220
134491390,3ptp4l15296-21ls19:35:171
134491390,3ptp4l0-21swapper/122:55:231
134491390,3ptp4l0-21swapper/100:32:291
134491390,3ptp4l0-21swapper/023:39:370
134491390,3ptp4l0-21swapper/020:10:270
134491390,3ptp4l0-21swapper/000:05:250
255399382,23cyclictest0-21swapper/322:38:503
255399381,33cyclictest10602-21irqstats22:50:193
255399381,23cyclictest12420-21runrttasks20:40:033
255399380,24cyclictest7089-21runrttasks22:43:313
134491380,5ptp4l0-21swapper/320:35:163
134491380,5ptp4l0-21swapper/121:10:201
134491380,4ptp4l0-21swapper/322:23:013
134491380,4ptp4l0-21swapper/322:15:443
134491380,4ptp4l0-21swapper/322:05:293
134491380,4ptp4l0-21swapper/320:18:103
134491380,4ptp4l0-21swapper/223:15:422
134491380,4ptp4l0-21swapper/222:57:342
134491380,4ptp4l0-21swapper/222:46:142
134491380,4ptp4l0-21swapper/222:43:362
134491380,4ptp4l0-21swapper/222:30:132
134491380,4ptp4l0-21swapper/222:05:352
134491380,4ptp4l0-21swapper/221:15:222
134491380,4ptp4l0-21swapper/220:26:222
134491380,4ptp4l0-21swapper/200:38:192
134491380,4ptp4l0-21swapper/200:10:282
134491380,4ptp4l0-21swapper/122:05:271
134491380,4ptp4l0-21swapper/121:50:211
134491380,4ptp4l0-21swapper/120:35:151
134491380,4ptp4l0-21swapper/120:18:311
134491380,4ptp4l0-21swapper/120:00:111
134491380,4ptp4l0-21swapper/119:25:191
134491380,4ptp4l0-21swapper/119:20:291
134491380,4ptp4l0-21swapper/100:38:581
134491380,4ptp4l0-21swapper/021:25:130
134491380,4ptp4l0-21swapper/020:05:160
134491380,4ptp4l0-21swapper/019:45:200
134491380,4ptp4l0-21swapper/019:35:070
134491380,4ptp4l0-21swapper/000:35:200
134491380,4ptp4l0-21swapper/000:25:210
134491380,3ptp4l0-21swapper/121:40:241
134491380,3ptp4l0-21swapper/020:53:280
134491380,3ptp4l0-21swapper/020:53:280
255399372,34cyclictest0-21swapper/323:50:273
255399371,17cyclictest134691getstats23:31:173
134491370,4ptp4l0-21swapper/323:00:533
134491370,4ptp4l0-21swapper/322:02:253
134491370,4ptp4l0-21swapper/321:57:423
134491370,4ptp4l0-21swapper/320:25:233
134491370,4ptp4l0-21swapper/222:29:172
134491370,3ptp4l0-21swapper/322:45:153
134491370,3ptp4l0-21swapper/123:21:491
134491370,3ptp4l0-21swapper/120:42:381
134491370,2ptp4l9473-21strings21:40:192
134491360,3ptp4l0-21swapper/322:30:153
134491360,3ptp4l0-21swapper/322:12:433
255399351,30cyclictest2318-21gnome-shell22:25:593
134491350,4ptp4l0-21swapper/321:52:313
134491350,3ptp4l0-21swapper/322:57:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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