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2026-04-14 - 11:43
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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 Tue Apr 14, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
289721530,6sleep01949799cyclictest20:50:270
1841721530,4sleep31950099cyclictest22:35:173
104892790,4sleep00-21swapper/022:15:280
1949799670,3cyclictest602-21sed20:45:280
134491670,3ptp4l0-21swapper/123:28:511
1949799650,30cyclictest11180-21seq00:36:130
134491650,5ptp4l0-21swapper/120:40:021
134491650,22ptp4l9490-21iostat_ios22:15:181
1949799640,29cyclictest29162-21taskset20:40:070
1949799630,29cyclictest5194-21seq19:47:130
1949799620,28cyclictest15885-21cpu22:30:130
1949799610,31cyclictest5985-21seq23:15:560
1949799610,30cyclictest23905-21taskset20:27:270
1949799610,29cyclictest28574-21seq20:38:280
1949799610,29cyclictest28574-21seq20:38:270
1949799610,21cyclictest2882-21fschecks_count00:20:150
1949799602,24cyclictest0-21swapper/000:32:490
134491600,16ptp4l0-21swapper/322:00:263
1949799592,25cyclictest0-21swapper/023:07:410
1949799591,29cyclictest24930-21seq23:59:100
1949799591,20cyclictest27302-21egrep21:45:130
1949799590,28cyclictest26352-21taskset20:34:250
134491590,4ptp4l0-21swapper/121:05:111
134491590,3ptp4l0-21swapper/123:05:231
1949799580,30cyclictest6296-21seq22:09:020
1949799580,30cyclictest2055-21seq00:17:510
1949799570,4cyclictest26055-21missed_timers22:50:210
134491570,4ptp4l0-21swapper/022:45:100
134491570,3ptp4l0-21swapper/220:00:042
1949799562,24cyclictest0-21swapper/023:10:540
134491560,4ptp4l0-21swapper/221:42:552
134491560,4ptp4l0-21swapper/100:26:021
134491560,4ptp4l0-21swapper/100:26:021
134491560,3ptp4l32431-21meminfo20:45:212
134491560,3ptp4l0-21swapper/320:53:543
134491560,3ptp4l0-21swapper/223:10:002
134491560,3ptp4l0-21swapper/200:26:132
134491560,3ptp4l0-21swapper/200:26:132
134491560,3ptp4l0-21swapper/022:25:190
134491550,4ptp4l0-21swapper/323:54:373
134491550,4ptp4l0-21swapper/121:32:081
134491550,4ptp4l0-21swapper/019:40:220
134491550,3ptp4l0-21swapper/121:17:111
134491540,4ptp4l0-21swapper/123:21:251
134491540,4ptp4l0-21swapper/120:50:401
134491540,4ptp4l0-21swapper/100:23:511
134491540,3ptp4l0-21swapper/221:11:172
46842530,3sleep20-21swapper/220:55:182
1949799532,23cyclictest0-21swapper/019:22:460
1949799530,3cyclictest8026-21switchtime22:10:260
134491530,3ptp4l0-21swapper/223:08:002
134491530,3ptp4l0-21swapper/120:15:011
134491530,17ptp4l0-21swapper/219:10:242
134491530,13ptp4l0-21swapper/319:05:103
1949799522,24cyclictest0-21swapper/021:22:560
134491520,4ptp4l0-21swapper/321:06:333
134491520,4ptp4l0-21swapper/222:51:182
134491520,4ptp4l0-21swapper/121:56:251
134491520,4ptp4l0-21swapper/120:08:231
134491520,3ptp4l0-21swapper/219:44:302
134491520,3ptp4l0-21swapper/123:00:241
134491520,2ptp4l11163-21/usr/sbin/munin23:30:180
1949799510,3cyclictest28972-21grep22:55:270
134491510,4ptp4l0-21swapper/222:48:402
134491510,4ptp4l0-21swapper/123:44:061
134491510,4ptp4l0-21swapper/100:18:151
134491510,3ptp4l0-21swapper/122:07:081
1949799502,24cyclictest0-21swapper/020:57:220
134491500,4ptp4l0-21swapper/222:19:252
134491500,4ptp4l0-21swapper/121:50:341
134491500,4ptp4l0-21swapper/121:01:031
134491500,3ptp4l0-21swapper/220:12:192
1949799490,14cyclictest134491ptp4l21:40:140
134491490,5ptp4l0-21swapper/022:41:540
134491490,4ptp4l0-21swapper/223:50:372
134491490,4ptp4l0-21swapper/100:32:311
134491490,3ptp4l0-21swapper/220:35:252
134491490,3ptp4l0-21swapper/220:35:242
134491490,3ptp4l0-21swapper/121:48:031
134491490,3ptp4l0-21swapper/120:56:051
134491480,4ptp4l0-21swapper/322:55:083
134491480,4ptp4l0-21swapper/220:15:052
134491480,4ptp4l0-21swapper/219:33:422
134491480,4ptp4l0-21swapper/122:37:591
134491480,16ptp4l25-21ksoftirqd/120:20:191
134491470,4ptp4l0-21swapper/221:46:512
134491470,4ptp4l0-21swapper/220:43:152
134491470,4ptp4l0-21swapper/122:32:321
134491470,4ptp4l0-21swapper/119:28:231
134491470,3ptp4l0-21swapper/123:49:551
1949799460,32cyclictest22585-21taskset23:53:330
134491460,4ptp4l0-21swapper/200:02:572
134491460,4ptp4l0-21swapper/100:01:071
134491460,3ptp4l0-21swapper/223:58:282
19500994537,5cyclictest41-21ksoftirqd/320:55:123
1949799451,31cyclictest17076-21seq20:14:200
134491450,4ptp4l24358-21apt-get20:30:152
134491450,4ptp4l0-21swapper/221:38:592
134491450,4ptp4l0-21swapper/219:07:442
134491450,4ptp4l0-21swapper/122:13:581
134491450,3ptp4l0-21swapper/200:15:312
134491450,3ptp4l0-21swapper/100:37:101
134491450,12ptp4l0-21swapper/219:20:172
1949799442,1cyclictest0-21swapper/000:10:240
1949799440,31cyclictest13021-21taskset22:21:430
134491440,6ptp4l0-21swapper/321:55:103
134491440,4ptp4l0-21swapper/019:55:450
134491440,3ptp4l0-21swapper/122:56:121
134491440,10ptp4l0-21swapper/320:28:353
134491430,9ptp4l0-21swapper/223:36:032
134491430,9ptp4l0-21swapper/222:55:432
134491430,9ptp4l0-21swapper/221:01:182
134491430,5ptp4l0-21swapper/321:10:133
134491430,4ptp4l6263-21apt-get21:00:130
134491430,4ptp4l2982-21meminfo22:00:210
134491430,4ptp4l0-21swapper/323:13:113
134491430,4ptp4l0-21swapper/322:07:363
134491430,4ptp4l0-21swapper/122:44:431
134491430,3ptp4l0-21swapper/300:03:053
134491430,3ptp4l0-21swapper/200:31:152
134491430,3ptp4l0-21swapper/119:36:081
19499994235,4cyclictest33-21ksoftirqd/222:25:052
1949799422,21cyclictest0-21swapper/021:14:140
1949799420,39cyclictest29976-21hddtemp_smartct21:50:160
1949799420,29cyclictest28521-21runrttasks19:29:430
134491420,8ptp4l0-21swapper/219:16:162
134491420,5ptp4l6615-21memory19:50:211
134491420,5ptp4l0-21swapper/320:40:133
134491420,5ptp4l0-21swapper/220:20:282
134491420,5ptp4l0-21swapper/121:22:341
134491420,5ptp4l0-21swapper/023:35:230
134491420,5ptp4l0-21swapper/020:15:210
134491420,5ptp4l0-21swapper/020:05:200
134491420,5ptp4l0-21swapper/019:35:120
134491420,4ptp4l30276-21iostat23:00:180
134491420,4ptp4l26502-21apt-get19:25:122
134491420,4ptp4l15650-21iostat20:10:161
134491420,4ptp4l0-21swapper/122:45:271
134491420,4ptp4l0-21swapper/121:44:221
134491420,4ptp4l0-21swapper/119:21:331
134491420,3ptp4l5664-21apt-get19:50:132
134491420,3ptp4l28800-21apt-get19:30:140
134491420,3ptp4l24368-21ls23:55:241
19500994136,3cyclictest41-21ksoftirqd/300:10:013
1949799410,38cyclictest9994-21ntp_states23:25:220
134491410,5ptp4l0-21swapper/320:35:193
134491410,5ptp4l0-21swapper/320:35:193
134491410,5ptp4l0-21swapper/320:15:273
134491410,5ptp4l0-21swapper/021:30:230
134491410,4ptp4l14319-21irqstats23:35:191
134491410,4ptp4l0-21swapper/223:15:122
134491410,4ptp4l0-21swapper/120:38:481
134491410,4ptp4l0-21swapper/120:38:481
134491410,4ptp4l0-21swapper/120:03:061
134491410,3ptp4l9443-21apt-get00:35:132
134491410,3ptp4l17984-21apt-get21:25:131
134491410,3ptp4l1488-21apt-get22:00:021
134491410,2ptp4l121rcu_preempt22:52:293
19500994035,3cyclictest41-21ksoftirqd/320:00:003
19500994035,3cyclictest41-21ksoftirqd/319:20:003
134491400,5ptp4l29985-21/usr/sbin/munin23:00:153
134491400,5ptp4l0-21swapper/323:15:183
134491400,5ptp4l0-21swapper/321:30:133
134491400,5ptp4l0-21swapper/300:35:123
134491400,5ptp4l0-21swapper/120:45:131
134491400,5ptp4l0-21swapper/119:12:481
134491400,5ptp4l0-21swapper/023:20:110
134491400,5ptp4l0-21swapper/021:26:470
134491400,4ptp4l25-21ksoftirqd/100:09:021
134491400,4ptp4l21251-21/usr/sbin/munin19:10:293
134491400,4ptp4l12836-21/usr/sbin/munin20:05:132
134491400,4ptp4l0-21swapper/323:20:173
134491400,4ptp4l0-21swapper/321:25:223
134491400,4ptp4l0-21swapper/320:11:413
134491400,4ptp4l0-21swapper/223:40:282
134491400,4ptp4l0-21swapper/223:28:512
134491400,4ptp4l0-21swapper/222:12:552
134491400,4ptp4l0-21swapper/222:09:032
134491400,4ptp4l0-21swapper/221:57:272
134491400,4ptp4l0-21swapper/221:51:532
134491400,4ptp4l0-21swapper/221:31:502
134491400,4ptp4l0-21swapper/221:26:432
134491400,4ptp4l0-21swapper/221:05:492
134491400,4ptp4l0-21swapper/219:59:592
134491400,4ptp4l0-21swapper/120:30:241
134491400,4ptp4l0-21swapper/100:10:231
134491400,4ptp4l0-21swapper/023:45:150
134491400,4ptp4l0-21swapper/023:43:580
134491400,4ptp4l0-21swapper/021:55:220
134491400,4ptp4l0-21swapper/021:06:370
134491400,4ptp4l0-21swapper/020:21:070
134491400,4ptp4l0-21swapper/019:13:380
134491400,4ptp4l0-21swapper/000:00:120
134491400,3ptp4l7988-21irqstats00:30:193
134491400,3ptp4l28800-21apt-get19:30:131
134491400,3ptp4l22637-21apt-get21:35:110
134491400,2ptp4l0-21swapper/320:49:333
19499993933,4cyclictest33-21ksoftirqd/222:30:342
134491390,5ptp4l0-21swapper/323:55:113
134491390,5ptp4l0-21swapper/320:00:023
134491390,5ptp4l0-21swapper/319:40:133
134491390,5ptp4l0-21swapper/121:35:011
134491390,5ptp4l0-21swapper/120:28:291
134491390,5ptp4l0-21swapper/000:25:580
134491390,5ptp4l0-21swapper/000:25:580
134491390,4ptp4l22427-21/usr/sbin/munin19:15:181
134491390,4ptp4l0-21swapper/323:40:273
134491390,4ptp4l0-21swapper/322:43:113
134491390,4ptp4l0-21swapper/322:25:213
134491390,4ptp4l0-21swapper/322:15:263
134491390,4ptp4l0-21swapper/321:15:193
134491390,4ptp4l0-21swapper/320:31:053
134491390,4ptp4l0-21swapper/319:54:463
134491390,4ptp4l0-21swapper/300:26:173
134491390,4ptp4l0-21swapper/300:26:173
134491390,4ptp4l0-21swapper/223:30:242
134491390,4ptp4l0-21swapper/223:21:242
134491390,4ptp4l0-21swapper/222:40:482
134491390,4ptp4l0-21swapper/222:38:572
134491390,4ptp4l0-21swapper/221:20:172
134491390,4ptp4l0-21swapper/221:15:182
134491390,4ptp4l0-21swapper/220:25:162
134491390,4ptp4l0-21swapper/200:06:512
134491390,4ptp4l0-21swapper/123:10:231
134491390,4ptp4l0-21swapper/122:50:171
134491390,4ptp4l0-21swapper/122:20:471
134491390,4ptp4l0-21swapper/119:40:191
134491390,4ptp4l0-21swapper/020:00:170
134491390,4ptp4l0-21swapper/019:53:460
134491390,4ptp4l0-21swapper/019:15:430
134491390,3ptp4l18491-21df_inode22:35:170
134491390,3ptp4l13846-21diskstats22:25:151
134491390,3ptp4l11356-21if_enp1s021:10:171
134491390,3ptp4l0-21swapper/222:22:172
134491390,3ptp4l0-21swapper/123:33:591
134491390,3ptp4l0-21swapper/021:15:250
134491380,5ptp4l0-21swapper/319:23:033
134491380,4ptp4l41-21ksoftirqd/321:35:193
134491380,4ptp4l0-21swapper/322:31:323
134491380,4ptp4l0-21swapper/322:21:373
134491380,4ptp4l0-21swapper/322:11:313
134491380,4ptp4l0-21swapper/321:45:263
134491380,4ptp4l0-21swapper/321:42:573
134491380,4ptp4l0-21swapper/320:20:133
134491380,4ptp4l0-21swapper/320:07:033
134491380,4ptp4l0-21swapper/319:47:593
134491380,4ptp4l0-21swapper/319:35:433
134491380,4ptp4l0-21swapper/223:45:102
134491380,4ptp4l0-21swapper/222:02:302
134491380,4ptp4l0-21swapper/220:50:192
134491380,4ptp4l0-21swapper/219:45:252
134491380,4ptp4l0-21swapper/219:35:192
134491380,4ptp4l0-21swapper/123:15:151
134491380,4ptp4l0-21swapper/119:55:161
134491380,4ptp4l0-21swapper/000:05:080
134491380,3ptp4l3481-21ls19:45:141
134491380,3ptp4l0-21swapper/323:34:273
134491380,3ptp4l0-21swapper/323:05:493
134491380,3ptp4l0-21swapper/321:20:213
134491380,3ptp4l0-21swapper/321:04:343
134491380,3ptp4l0-21swapper/319:33:313
134491380,3ptp4l0-21swapper/123:50:251
19500993731,3cyclictest41-21ksoftirqd/300:20:193
134491370,4ptp4l0-21swapper/323:49:153
134491370,4ptp4l0-21swapper/322:46:573
134491370,4ptp4l0-21swapper/321:51:443
134491370,4ptp4l0-21swapper/300:15:313
134491370,4ptp4l0-21swapper/300:11:103
134491370,4ptp4l0-21swapper/223:00:262
134491370,4ptp4l0-21swapper/200:23:092
134491370,4ptp4l0-21swapper/200:11:052
134491370,3ptp4l0-21swapper/319:26:493
134491360,3ptp4l0-21swapper/323:36:283
134491340,3ptp4l0-21swapper/323:29:253
190542213,11sleep119090-21ls19:10:001
137891114,4phc2sys0-21swapper/019:08:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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