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2026-07-20 - 12:07
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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 Mon Jul 20, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187221630,7sleep01141899cyclictest22:15:260
111352760,8sleep0212-21systemd-journal19:09:590
144642710,5sleep10-21swapper/119:15:181
134491680,4ptp4l17224-21apt-get00:00:140
134491640,4ptp4l0-21swapper/023:05:240
134491640,4ptp4l0-21swapper/023:05:240
134491640,3ptp4l28993-21meminfo19:45:181
134491610,4ptp4l0-21swapper/021:20:300
1142099597,7cyclictest0-21swapper/200:20:252
134491570,3ptp4l0-21swapper/119:56:201
134491570,3ptp4l0-21swapper/100:13:511
134491560,5ptp4l0-21swapper/019:50:010
134491560,3ptp4l20952-21/usr/sbin/munin00:05:331
134491560,3ptp4l0-21swapper/120:35:161
1142099568,6cyclictest0-21swapper/220:50:232
1142099567,7cyclictest0-21swapper/223:05:142
1142099567,7cyclictest0-21swapper/223:05:142
134491550,4ptp4l0-21swapper/219:10:322
1142099557,7cyclictest0-21swapper/222:00:232
1142099556,6cyclictest0-21swapper/220:05:232
134491540,4ptp4l0-21swapper/121:34:281
134491540,3ptp4l0-21swapper/100:25:191
1142099547,7cyclictest0-21swapper/223:35:222
1142099547,7cyclictest0-21swapper/219:40:142
134491530,4ptp4l0-21swapper/323:29:593
134491530,4ptp4l0-21swapper/320:10:343
134491530,4ptp4l0-21swapper/121:41:111
134491530,3ptp4l0-21swapper/122:21:191
134491530,3ptp4l0-21swapper/121:20:431
134491530,14ptp4l0-21swapper/120:23:481
1142099536,13cyclictest0-21swapper/222:40:262
1142099530,13cyclictest15572-21awk19:15:292
134491520,4ptp4l0-21swapper/300:21:203
134491520,4ptp4l0-21swapper/121:07:341
134491520,4ptp4l0-21swapper/000:28:030
134491520,4ptp4l0-21swapper/000:06:560
134491520,3ptp4l0-21swapper/122:35:251
134491520,3ptp4l0-21swapper/121:15:261
134491520,3ptp4l0-21swapper/121:15:261
134491520,3ptp4l0-21swapper/100:20:141
134491520,3ptp4l0-21swapper/020:00:230
1142099527,12cyclictest0-21swapper/220:10:302
1142099523,11cyclictest31646-21ntpq19:50:222
134491510,9ptp4l10206-21ntp_states19:05:233
134491510,4ptp4l0-21swapper/319:12:063
134491510,4ptp4l0-21swapper/300:35:393
134491510,4ptp4l0-21swapper/120:25:041
134491510,3ptp4l0-21swapper/122:10:421
1142099518,7cyclictest0-21swapper/200:10:262
1142099518,6cyclictest0-21swapper/221:25:162
1142099512,6cyclictest33-21ksoftirqd/222:25:232
1142099512,6cyclictest0-21swapper/200:29:582
1142099512,16cyclictest21314-21grep20:40:122
259732500,4sleep20-21swapper/200:15:272
134491500,4ptp4l0-21swapper/321:17:583
134491500,4ptp4l0-21swapper/321:17:583
134491500,4ptp4l0-21swapper/121:02:221
134491500,3ptp4l0-21swapper/120:42:431
1142099509,7cyclictest0-21swapper/222:50:152
1142099502,5cyclictest0-21swapper/221:30:182
134491490,4ptp4l0-21swapper/121:52:261
134491490,4ptp4l0-21swapper/021:35:560
134491490,4ptp4l0-21swapper/019:22:120
134491490,11ptp4l0-21swapper/200:06:042
1142099497,7cyclictest0-21swapper/200:35:242
134491480,4ptp4l0-21swapper/323:08:123
134491480,4ptp4l0-21swapper/323:08:123
134491480,4ptp4l0-21swapper/122:51:041
134491480,4ptp4l0-21swapper/021:10:010
134491480,3ptp4l0-21swapper/123:01:341
134491480,3ptp4l0-21swapper/020:10:280
134491480,3ptp4l0-21swapper/019:19:360
1142099487,7cyclictest0-21swapper/221:40:282
1142099487,7cyclictest0-21swapper/219:45:252
134491470,4ptp4l0-21swapper/319:26:423
134491470,4ptp4l0-21swapper/319:26:423
134491470,4ptp4l0-21swapper/023:42:530
134491470,4ptp4l0-21swapper/021:15:250
134491470,4ptp4l0-21swapper/021:15:250
134491470,3ptp4l121rcu_preempt23:00:200
134491470,3ptp4l0-21swapper/220:20:132
134491470,3ptp4l0-21swapper/219:39:552
134491470,3ptp4l0-21swapper/120:18:281
1142099477,6cyclictest0-21swapper/223:40:152
1142099477,6cyclictest0-21swapper/220:00:132
1142099475,7cyclictest0-21swapper/221:00:522
134491460,4ptp4l0-21swapper/320:33:483
134491460,4ptp4l0-21swapper/122:09:291
134491460,4ptp4l0-21swapper/120:10:271
134491460,3ptp4l0-21swapper/119:44:041
134491460,3ptp4l0-21swapper/023:46:450
134491460,10ptp4l0-21swapper/200:01:442
1142099461,8cyclictest14319-21apt-get21:35:152
134491450,4ptp4l491-21ls00:30:272
134491450,4ptp4l26107-21apt-get22:00:110
134491450,4ptp4l0-21swapper/121:12:401
134491450,3ptp4l121rcu_preempt20:35:530
134491450,3ptp4l0-21swapper/022:34:070
134491450,11ptp4l0-21swapper/019:25:300
134491450,11ptp4l0-21swapper/019:25:300
134491450,10ptp4l0-21swapper/320:55:363
134491450,10ptp4l0-21swapper/222:34:512
11421994534,9cyclictest41-21ksoftirqd/322:40:143
1142099458,11cyclictest0-21swapper/222:10:242
1142099452,16cyclictest1492-21cat22:15:212
1142099450,8cyclictest18992-21apt-get20:35:132
134491440,9ptp4l0-21swapper/223:01:192
134491440,9ptp4l0-21swapper/220:47:562
134491440,5ptp4l0-21swapper/321:45:263
134491440,4ptp4l0-21swapper/319:51:503
134491440,4ptp4l0-21swapper/122:44:411
134491440,3ptp4l12108-21apt-get23:50:001
134491440,3ptp4l0-21swapper/122:27:151
1142099446,11cyclictest0-21swapper/223:15:242
11418994439,3cyclictest9-21ksoftirqd/022:00:010
134491430,9ptp4l0-21swapper/223:31:162
134491430,5ptp4l0-21swapper/219:08:112
134491430,5ptp4l0-21swapper/022:55:130
134491430,4ptp4l12045-21apt-get20:20:123
134491430,4ptp4l0-21swapper/122:01:381
134491430,4ptp4l0-21swapper/121:48:421
134491430,3ptp4l0-21swapper/020:18:310
134491420,4ptp4l32371-21ls00:30:201
134491420,4ptp4l32264-21unattended-upgr21:00:523
134491420,4ptp4l26743-21irqstats20:50:191
134491420,4ptp4l16337-21apt-get19:20:142
134491420,4ptp4l12021-21apt-get21:30:130
134491420,4ptp4l1056-21df_inode23:25:150
134491420,4ptp4l0-21swapper/223:58:112
134491420,4ptp4l0-21swapper/223:20:192
134491420,4ptp4l0-21swapper/223:10:142
134491420,4ptp4l0-21swapper/121:55:091
134491420,4ptp4l0-21swapper/120:33:111
134491420,3ptp4l10815-21meminfo22:35:212
134491420,3ptp4l0-21swapper/021:00:220
134491420,1ptp4l0-21swapper/321:44:583
1142099425,6cyclictest0-21swapper/223:50:182
1142099422,11cyclictest0-21swapper/220:30:242
134491410,9ptp4l0-21swapper/220:28:302
134491410,8ptp4l0-21swapper/123:35:121
134491410,5ptp4l0-21swapper/323:45:253
134491410,5ptp4l0-21swapper/322:05:153
134491410,5ptp4l0-21swapper/021:40:120
134491410,4ptp4l31505-21irqstats23:20:203
134491410,4ptp4l30117-21apt-get19:50:031
134491410,4ptp4l22608-21ntp_states21:50:230
134491410,4ptp4l1275-21irqstats21:05:202
134491410,4ptp4l0-21swapper/123:44:131
134491410,4ptp4l0-21swapper/023:50:230
134491410,3ptp4l25459-21ls00:15:190
134491410,3ptp4l0-21swapper/122:30:071
134491410,2ptp4l0-21swapper/322:26:073
1142099417,6cyclictest0-21swapper/221:15:282
1142099417,6cyclictest0-21swapper/221:15:282
134491400,7ptp4l0-21swapper/322:50:283
134491400,6ptp4l12360-21entropy20:20:150
134491400,6ptp4l0-21swapper/119:32:241
134491400,5ptp4l0-21swapper/319:40:223
134491400,5ptp4l0-21swapper/223:27:232
134491400,5ptp4l0-21swapper/120:05:241
134491400,5ptp4l0-21swapper/021:25:190
134491400,5ptp4l0-21swapper/020:40:210
134491400,4ptp4l3425-21df_inode23:30:151
134491400,4ptp4l28505-21diskstats20:55:160
134491400,4ptp4l24178-21hddtemp_smartct23:05:171
134491400,4ptp4l24178-21hddtemp_smartct23:05:171
134491400,4ptp4l22555-21sort00:10:150
134491400,4ptp4l20076-21/usr/sbin/munin22:55:201
134491400,4ptp4l15683-21python20:25:263
134491400,4ptp4l14121-21ls23:50:273
134491400,4ptp4l10018-21df_inode21:25:141
134491400,4ptp4l0-21swapper/319:15:293
134491400,4ptp4l0-21swapper/222:48:232
134491400,4ptp4l0-21swapper/221:50:162
134491400,4ptp4l0-21swapper/123:15:201
134491400,4ptp4l0-21swapper/120:00:131
134491400,4ptp4l0-21swapper/119:24:481
134491400,4ptp4l0-21swapper/023:30:060
134491400,4ptp4l0-21swapper/023:11:550
134491400,4ptp4l0-21swapper/022:27:290
134491400,4ptp4l0-21swapper/020:45:170
134491400,4ptp4l0-21swapper/020:25:140
134491400,4ptp4l0-21swapper/019:57:490
134491400,3ptp4l5727-21diskstats23:35:140
134491400,3ptp4l24522-21apt-get00:15:133
134491400,3ptp4l24168-21iostat20:45:163
134491400,3ptp4l20131-21ls19:25:282
134491400,3ptp4l20131-21ls19:25:282
134491400,3ptp4l15061-21iostat_ios22:45:181
11421994034,3cyclictest41-21ksoftirqd/323:04:593
11421994034,3cyclictest41-21ksoftirqd/322:00:123
1142099401,5cyclictest0-21swapper/221:49:092
134491390,5ptp4l0-21swapper/219:57:092
134491390,4ptp4l23653-21hddtemp_smartct19:35:170
134491390,4ptp4l12421-21df_abs22:40:140
134491390,4ptp4l0-21swapper/323:42:553
134491390,4ptp4l0-21swapper/323:15:233
134491390,4ptp4l0-21swapper/323:10:183
134491390,4ptp4l0-21swapper/322:55:163
134491390,4ptp4l0-21swapper/321:36:533
134491390,4ptp4l0-21swapper/320:35:563
134491390,4ptp4l0-21swapper/319:55:283
134491390,4ptp4l0-21swapper/300:00:413
134491390,4ptp4l0-21swapper/222:56:352
134491390,4ptp4l0-21swapper/221:23:372
134491390,4ptp4l0-21swapper/220:16:592
134491390,4ptp4l0-21swapper/120:45:181
134491390,4ptp4l0-21swapper/119:38:501
134491390,4ptp4l0-21swapper/119:10:281
134491390,4ptp4l0-21swapper/100:00:201
134491390,4ptp4l0-21swapper/023:57:040
134491390,4ptp4l0-21swapper/023:22:060
134491390,4ptp4l0-21swapper/023:15:140
134491390,4ptp4l0-21swapper/022:37:090
134491390,4ptp4l0-21swapper/022:20:150
134491390,4ptp4l0-21swapper/022:10:120
134491390,4ptp4l0-21swapper/021:05:270
134491390,4ptp4l0-21swapper/020:53:340
134491390,4ptp4l0-21swapper/020:30:280
134491390,4ptp4l0-21swapper/019:40:290
134491390,4ptp4l0-21swapper/000:20:260
134491390,3ptp4l14890-21iostat_ios21:35:201
134491390,3ptp4l0-21swapper/123:25:211
134491390,3ptp4l0-21swapper/123:20:241
134491390,3ptp4l0-21swapper/100:35:071
134491390,3ptp4l0-21swapper/022:50:150
134491390,3ptp4l0-21swapper/020:05:250
11421993934,3cyclictest41-21ksoftirqd/320:15:153
11420993934,3cyclictest33-21ksoftirqd/221:56:112
1142099392,5cyclictest0-21swapper/219:31:462
46198380,4rtkit-daemon14917-21hddtemp_smartct22:45:170
134491380,7ptp4l0-21swapper/319:21:233
134491380,4ptp4l0-21swapper/323:32:293
134491380,4ptp4l0-21swapper/321:20:263
134491380,4ptp4l0-21swapper/320:52:063
134491380,4ptp4l0-21swapper/320:42:143
134491380,4ptp4l0-21swapper/320:07:443
134491380,4ptp4l0-21swapper/319:47:343
134491380,4ptp4l0-21swapper/319:36:183
134491380,4ptp4l0-21swapper/319:30:013
134491380,4ptp4l0-21swapper/300:10:483
134491380,4ptp4l0-21swapper/223:49:522
134491380,4ptp4l0-21swapper/222:05:172
134491380,4ptp4l0-21swapper/221:11:502
134491380,4ptp4l0-21swapper/123:55:191
134491380,4ptp4l0-21swapper/123:49:351
134491380,4ptp4l0-21swapper/123:14:571
134491380,4ptp4l0-21swapper/122:15:161
134491380,4ptp4l0-21swapper/022:09:530
134491380,4ptp4l0-21swapper/021:45:280
134491380,4ptp4l0-21swapper/019:45:000
134491380,4ptp4l0-21swapper/019:30:260
134491380,4ptp4l0-21swapper/019:10:230
134491380,3ptp4l28766-21iostat20:55:191
134491380,3ptp4l0-21swapper/119:28:231
134491380,3ptp4l0-21swapper/119:28:231
134491380,3ptp4l0-21swapper/100:17:511
134491380,3ptp4l0-21swapper/000:35:050
11421993833,3cyclictest41-21ksoftirqd/322:14:593
11421993833,3cyclictest41-21ksoftirqd/300:05:203
11421993832,3cyclictest41-21ksoftirqd/322:39:593
1142099382,34cyclictest0-21swapper/222:20:222
134491370,4ptp4l0-21swapper/323:36:183
134491370,4ptp4l0-21swapper/321:09:543
134491370,4ptp4l0-21swapper/320:00:553
134491370,4ptp4l0-21swapper/220:56:392
134491370,3ptp4l0-21swapper/300:30:293
134491370,3ptp4l0-21swapper/000:30:160
11421993732,3cyclictest41-21ksoftirqd/322:20:183
134491360,4ptp4l0-21swapper/321:27:303
134491360,3ptp4l0-21swapper/322:33:253
134491360,3ptp4l0-21swapper/321:50:423
134491360,3ptp4l0-21swapper/321:30:183
134491360,3ptp4l0-21swapper/300:25:223
134491350,4ptp4l0-21swapper/321:57:453
11421993531,3cyclictest41-21ksoftirqd/322:15:143
11421993531,3cyclictest41-21ksoftirqd/321:10:153
134491310,4ptp4l0-21swapper/322:45:033
11421992924,3cyclictest41-21ksoftirqd/323:55:183
951022313,6sleep125-21ksoftirqd/119:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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