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2026-07-15 - 12:21
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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 Jul 15, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1569421390,5sleep0548299cyclictest00:05:280
548499809,61cyclictest12142-21timerandwakeup21:40:282
5484997911,65cyclictest10552-21tune2fs19:20:172
5484997511,62cyclictest0-21swapper/222:20:282
5484997413,11cyclictest15034-21latency_hist21:50:002
548499740,70cyclictest0-21swapper/223:00:152
5484997216,11cyclictest24386-21chrt22:08:482
5484997214,12cyclictest5653-21chrt21:28:132
5484997015,11cyclictest25227-21taskset00:25:322
5484997013,12cyclictest11472-21chrt23:58:532
5484996914,10cyclictest7530-21taskset19:14:382
5484996913,11cyclictest208502chrt00:18:302
5484996814,11cyclictest19538-21taskset23:06:252
5484996814,10cyclictest30452-21taskset20:02:352
5484996810,22cyclictest14936-21df_abs19:30:132
548499679,16cyclictest1979-21hddtemp_smartct22:30:162
548499678,13cyclictest6898-21cut22:40:192
5484996718,15cyclictest8740-21taskset23:51:072
5484996715,11cyclictest14606-21seq20:37:082
5484996714,9cyclictest21604-21cat19:44:592
5484996711,11cyclictest9108-21tr19:15:252
5484996618,11cyclictest6387-21chrt23:48:012
5484996617,10cyclictest902-21taskset21:17:342
5484996614,10cyclictest3104-21awk21:20:292
5484996613,10cyclictest12567-21chrt22:51:212
134491660,4ptp4l0-21swapper/123:00:011
5484996518,10cyclictest22278-21chrt23:14:192
5484996518,10cyclictest13703-21taskset00:02:462
5484996513,11cyclictest29176-21df_abs21:10:142
134491650,26ptp4l0-21swapper/021:33:100
5485996430,4cyclictest41-21ksoftirqd/322:55:003
5485996428,3cyclictest41-21ksoftirqd/323:35:013
5485996418,9cyclictest41-21ksoftirqd/323:00:003
548499649,16cyclictest0-21swapper/223:40:232
5484996417,11cyclictest21731-21taskset22:01:582
5484996417,11cyclictest18844-21taskset19:36:272
5484996410,11cyclictest448-21dbus-daemon00:20:252
134491640,4ptp4l0-21swapper/023:25:330
134491640,3ptp4l212-21systemd-journal22:45:011
5485996331,3cyclictest41-21ksoftirqd/300:20:013
5484996318,9cyclictest14214-21taskset19:26:422
5484996317,10cyclictest30096-21taskset00:36:222
5484996317,10cyclictest23670-21taskset19:49:152
5484996314,16cyclictest6152-21cat21:30:142
5484996313,9cyclictest18420-21missed_timers20:45:212
5484996313,9cyclictest15040-21ls00:05:202
5484996311,9cyclictest1849-21latency_hist23:40:002
548499629,12cyclictest10150-21date20:30:012
548499629,11cyclictest25137-21df_abs23:20:152
5484996218,11cyclictest1146-21chrt22:28:262
5484996218,10cyclictest23953-21chrt20:58:162
5484996212,11cyclictest26170-21sed19:54:592
5484996210,8cyclictest8356-21cpu21:35:152
548499618,23cyclictest0-21swapper/221:50:152
5484996118,17cyclictest7512-21chrt20:22:132
5484996118,16cyclictest549-21chrt20:07:572
5484996118,10cyclictest2836-21chrt20:11:302
5484996117,9cyclictest12181-21taskset20:33:132
5484996114,11cyclictest3334-21chrt20:15:032
134491610,4ptp4l31952-21diskstats22:25:161
5484996017,9cyclictest26225-21taskset21:02:422
5484996017,16cyclictest26476-21taskset22:11:172
5484995917,11cyclictest18640-21taskset00:14:412
5484995917,10cyclictest27866-21taskset00:32:062
5484995917,10cyclictest14876-21taskset22:56:302
5484995914,10cyclictest0-21swapper/223:33:242
5484995910,9cyclictest19738-21/usr/sbin/munin20:50:242
134491590,5ptp4l676-21ntp_states23:35:243
134491590,5ptp4l0-21swapper/219:09:002
134491590,3ptp4l24518-21if_err_enp4s019:50:181
5485995829,3cyclictest41-21ksoftirqd/319:55:293
134491580,4ptp4l20229-21diskstats22:00:140
134491580,4ptp4l0-21swapper/020:26:490
134491580,3ptp4l0-21swapper/121:25:231
5485995726,4cyclictest41-21ksoftirqd/320:52:403
5484995716,11cyclictest10239-21chrt22:45:552
134491570,4ptp4l0-21swapper/119:05:181
134491570,3ptp4l0-21swapper/019:38:270
134491570,3ptp4l0-21swapper/000:00:070
5485995622,7cyclictest41-21ksoftirqd/320:50:003
134491560,4ptp4l0-21swapper/320:33:293
134491560,4ptp4l0-21swapper/000:33:580
134491560,3ptp4l0-21swapper/319:31:113
134491560,3ptp4l0-21swapper/120:20:501
5485995526,7cyclictest41-21ksoftirqd/323:50:003
5485995526,3cyclictest41-21ksoftirqd/323:15:143
5485995524,7cyclictest41-21ksoftirqd/323:55:133
5485995523,4cyclictest41-21ksoftirqd/320:30:003
5485995521,4cyclictest41-21ksoftirqd/320:45:003
5485995521,4cyclictest41-21ksoftirqd/320:45:003
5485995513,4cyclictest41-21ksoftirqd/320:05:123
5484995517,10cyclictest19614-21chrt21:59:332
5484995516,9cyclictest28123-21taskset19:57:262
5484995510,17cyclictest22786-21cstates23:15:152
548499550,15cyclictest0-21swapper/221:05:162
134491550,4ptp4l0-21swapper/023:17:570
134491550,3ptp4l0-21swapper/119:15:241
5485995424,4cyclictest41-21ksoftirqd/300:10:123
5485995421,8cyclictest41-21ksoftirqd/323:20:173
5485995420,8cyclictest41-21ksoftirqd/322:09:593
5485995415,11cyclictest41-21ksoftirqd/323:10:173
5484995411,14cyclictest27304-21cat23:25:142
134491540,4ptp4l0-21swapper/122:18:391
134491540,4ptp4l0-21swapper/121:52:021
134491540,4ptp4l0-21swapper/119:48:581
134491540,4ptp4l0-21swapper/100:01:201
134491540,3ptp4l0-21swapper/322:21:163
134491540,3ptp4l0-21swapper/100:35:181
5485995325,3cyclictest41-21ksoftirqd/322:35:183
5485995322,3cyclictest41-21ksoftirqd/323:40:163
5485995321,4cyclictest41-21ksoftirqd/323:05:203
5485995321,4cyclictest41-21ksoftirqd/321:40:193
5485995320,7cyclictest41-21ksoftirqd/320:40:003
5485995318,6cyclictest41-21ksoftirqd/319:35:203
5485995318,4cyclictest41-21ksoftirqd/321:20:193
134491530,4ptp4l0-21swapper/321:52:493
134491530,4ptp4l0-21swapper/320:11:473
134491530,4ptp4l0-21swapper/119:57:021
134491530,3ptp4l0-21swapper/323:00:183
134491530,3ptp4l0-21swapper/122:00:241
5485995228,7cyclictest41-21ksoftirqd/320:55:243
548599522,7cyclictest0-21swapper/300:30:243
548599522,6cyclictest0-21swapper/320:00:223
5485995222,4cyclictest41-21ksoftirqd/323:50:203
5485995211,9cyclictest41-21ksoftirqd/300:05:243
548599520,3cyclictest121rcu_preempt00:40:003
134491520,4ptp4l0-21swapper/319:26:103
134491520,4ptp4l0-21swapper/123:09:321
134491520,4ptp4l0-21swapper/020:45:150
134491520,3ptp4l0-21swapper/120:30:411
5485995121,8cyclictest41-21ksoftirqd/300:25:263
5485995119,4cyclictest41-21ksoftirqd/319:10:283
134491510,5ptp4l0-21swapper/019:06:030
134491510,4ptp4l0-21swapper/321:08:253
134491510,4ptp4l0-21swapper/122:36:411
134491510,4ptp4l0-21swapper/121:56:391
134491510,4ptp4l0-21swapper/120:01:371
134491510,4ptp4l0-21swapper/021:12:110
548599502,7cyclictest0-21swapper/319:50:263
5485995018,7cyclictest41-21ksoftirqd/323:25:203
5485995017,7cyclictest41-21ksoftirqd/322:25:203
5485995015,9cyclictest41-21ksoftirqd/321:25:193
5485995013,8cyclictest41-21ksoftirqd/319:15:273
134491500,4ptp4l0-21swapper/321:34:223
134491500,4ptp4l0-21swapper/123:56:291
134491500,4ptp4l0-21swapper/123:43:321
134491500,4ptp4l0-21swapper/121:05:581
134491500,3ptp4l0-21swapper/120:06:111
5485994921,3cyclictest41-21ksoftirqd/321:20:003
5485994918,10cyclictest41-21ksoftirqd/319:45:213
5485994917,8cyclictest41-21ksoftirqd/300:00:283
5485994917,7cyclictest41-21ksoftirqd/319:20:283
548599491,3cyclictest121rcu_preempt20:15:253
548499497,15cyclictest16229-21ntpq20:40:252
548499497,15cyclictest16229-21ntpq20:40:252
134491490,3ptp4l21321-21ls20:50:290
134491490,15ptp4l25-21ksoftirqd/120:16:591
5485994825,9cyclictest41-21ksoftirqd/322:45:013
5485994818,7cyclictest41-21ksoftirqd/300:20:283
5485994816,8cyclictest41-21ksoftirqd/322:30:173
134491480,4ptp4l0-21swapper/021:39:090
548599474,5cyclictest121rcu_preempt21:45:193
5485994714,7cyclictest41-21ksoftirqd/322:15:303
548599470,3cyclictest121rcu_preempt21:15:003
134491470,3ptp4l0-21swapper/120:41:071
134491470,3ptp4l0-21swapper/120:41:071
134491470,10ptp4l0-21swapper/319:05:203
5485994614,7cyclictest41-21ksoftirqd/320:20:273
5485994612,7cyclictest41-21ksoftirqd/319:40:133
134491460,4ptp4l0-21swapper/123:28:531
134491460,4ptp4l0-21swapper/119:10:521
134491460,4ptp4l0-21swapper/100:14:251
134491460,3ptp4l0-21swapper/120:39:561
134491460,3ptp4l0-21swapper/021:21:190
134491460,12ptp4l0-21swapper/021:40:150
548599453,6cyclictest121rcu_preempt21:55:143
134491450,4ptp4l2318-21gnome-shell19:40:580
134491450,3ptp4l0-21swapper/100:20:381
134491450,3ptp4l0-21swapper/100:15:371
134491440,9ptp4l0-21swapper/020:07:440
134491440,4ptp4l3891-21apt-get22:35:112
134491440,4ptp4l0-21swapper/123:14:441
134491440,3ptp4l0-21swapper/222:17:542
5485994316,7cyclictest41-21ksoftirqd/321:00:173
134491430,9ptp4l0-21swapper/022:44:120
134491430,9ptp4l0-21swapper/021:48:370
134491430,8ptp4l9-21ksoftirqd/020:00:570
134491430,5ptp4l0-21swapper/021:50:160
134491430,4ptp4l6562-21apt-get23:50:010
134491430,4ptp4l0-21swapper/123:36:441
134491430,4ptp4l0-21swapper/020:21:280
134491430,4ptp4l0-21swapper/019:18:210
134491430,3ptp4l0-21swapper/120:52:511
548599423,4cyclictest41-21ksoftirqd/322:45:263
5485994221,8cyclictest41-21ksoftirqd/322:00:253
548599421,3cyclictest121rcu_preempt21:35:213
134491420,9ptp4l0-21swapper/023:08:010
134491420,7ptp4l9-21ksoftirqd/022:31:480
134491420,5ptp4l0-21swapper/123:45:111
134491420,5ptp4l0-21swapper/122:30:181
134491420,5ptp4l0-21swapper/122:05:171
134491420,5ptp4l0-21swapper/022:35:170
134491420,4ptp4l2318-21gnome-shell23:58:590
134491420,4ptp4l0-21swapper/022:13:200
134491420,3ptp4l7006-21apt-get23:50:121
5482994135,3cyclictest9-21ksoftirqd/023:45:000
134491410,5ptp4l8844-21awk22:45:160
134491410,5ptp4l19272-21/usr/sbin/munin21:55:290
134491410,5ptp4l0-21swapper/122:50:251
134491410,5ptp4l0-21swapper/119:30:271
134491410,5ptp4l0-21swapper/022:25:200
134491410,4ptp4l8952-21hddtemp_smartct22:45:181
134491410,4ptp4l32029-21iostat21:15:190
134491410,4ptp4l30650-21ls23:30:220
134491410,4ptp4l22533-21irqstats19:45:190
134491410,4ptp4l0-21swapper/123:23:011
134491410,4ptp4l0-21swapper/119:35:381
134491410,4ptp4l0-21swapper/020:15:200
134491410,4ptp4l0-21swapper/000:13:010
134491410,3ptp4l25552-21ls19:50:270
5485994035,3cyclictest41-21ksoftirqd/322:10:263
5482994022,8cyclictest9-21ksoftirqd/023:23:340
134491400,5ptp4l15145-21/usr/sbin/munin19:30:150
134491400,4ptp4l30010-21df_inode23:30:181
134491400,4ptp4l24934-21iostat_ios21:00:201
134491400,4ptp4l16673-21ls20:40:290
134491400,4ptp4l16673-21ls20:40:290
134491400,4ptp4l13801-21irqstats21:45:191
134491400,4ptp4l10532-21df_abs20:30:150
134491400,4ptp4l0-21swapper/123:16:191
134491400,4ptp4l0-21swapper/122:20:211
134491400,4ptp4l0-21swapper/122:11:141
134491400,4ptp4l0-21swapper/121:43:581
134491400,4ptp4l0-21swapper/120:45:151
134491400,4ptp4l0-21swapper/023:35:300
134491400,4ptp4l0-21swapper/022:57:320
134491400,4ptp4l0-21swapper/022:17:230
134491400,4ptp4l0-21swapper/021:05:130
134491400,4ptp4l0-21swapper/000:26:510
134491400,3ptp4l2376-21ls21:20:201
134491400,3ptp4l14130-21apt-get00:05:121
134491400,3ptp4l0-21swapper/120:13:581
134491400,3ptp4l0-21swapper/100:25:081
134491400,3ptp4l0-21swapper/019:21:170
5482993934,3cyclictest9-21ksoftirqd/021:05:010
134491390,4ptp4l0-21swapper/121:36:061
134491390,4ptp4l0-21swapper/120:56:461
134491390,4ptp4l0-21swapper/119:41:131
134491390,4ptp4l0-21swapper/119:23:581
134491390,4ptp4l0-21swapper/100:30:581
134491390,4ptp4l0-21swapper/023:11:500
134491390,4ptp4l0-21swapper/022:50:140
134491390,4ptp4l0-21swapper/022:21:020
134491390,4ptp4l0-21swapper/022:08:060
134491390,4ptp4l0-21swapper/020:36:330
134491390,4ptp4l0-21swapper/019:55:120
134491390,4ptp4l0-21swapper/019:26:080
134491390,4ptp4l0-21swapper/019:10:110
134491390,4ptp4l0-21swapper/000:20:230
134491390,3ptp4l4690-21meminfo21:25:210
134491390,3ptp4l4488-21apt-get23:45:110
134491390,3ptp4l29384-21hddtemp_smartct21:10:161
134491390,3ptp4l2135-21ntp_states20:10:240
134491390,3ptp4l19132-21df00:15:150
134491390,3ptp4l16365-21ls23:00:190
134491380,4ptp4l0-21swapper/121:30:201
134491380,4ptp4l0-21swapper/121:15:321
134491380,4ptp4l0-21swapper/120:26:201
134491380,4ptp4l0-21swapper/119:27:411
134491380,4ptp4l0-21swapper/020:59:430
134491380,4ptp4l0-21swapper/000:35:220
134491380,3ptp4l0-21swapper/123:00:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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