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2026-06-29 - 06:20
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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 Jun 29, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491660,4ptp4l11267-21apt-get19:40:121
206242640,3sleep30-21swapper/300:35:273
134491640,5ptp4l0-21swapper/320:10:213
2975999637,16cyclictest29571-21cat23:45:200
2975999636,12cyclictest22488-21grep23:30:230
2975999626,9cyclictest0-21swapper/023:50:140
134491610,4ptp4l0-21swapper/323:35:043
317092600,5sleep09-21ksoftirqd/021:30:280
2975999597,11cyclictest1860-21ntpq23:55:230
2975999596,10cyclictest7054-21fschecks_time19:30:150
134491590,4ptp4l0-21swapper/021:40:250
134491590,3ptp4l0-21swapper/023:20:560
2975999585,16cyclictest10504-21irqrtprio23:05:190
2975999584,11cyclictest15601-21cut00:25:190
134491580,3ptp4l0-21swapper/323:50:173
2975999576,9cyclictest8523-21cat23:00:230
2975999574,10cyclictest21144-21cut20:00:180
134491560,5ptp4l0-21swapper/120:15:271
134491560,4ptp4l0-21swapper/223:05:172
2975999555,9cyclictest0-21swapper/022:35:300
2975999554,11cyclictest13259-21date22:00:270
134491550,4ptp4l0-21swapper/323:31:483
134491550,3ptp4l0-21swapper/121:58:261
2975999545,16cyclictest19338-21missed_timers21:05:230
2975999545,10cyclictest13841-21df_abs19:45:140
134491540,4ptp4l0-21swapper/322:01:563
134491540,3ptp4l0-21swapper/321:37:403
134491540,3ptp4l0-21swapper/119:35:021
134491540,13ptp4l1301-21snmpd20:20:133
2975999534,9cyclictest0-21swapper/022:40:140
134491530,4ptp4l0-21swapper/320:34:403
134491530,4ptp4l0-21swapper/300:25:073
134491530,4ptp4l0-21swapper/222:51:362
134491530,4ptp4l0-21swapper/123:08:261
134491530,3ptp4l26716-21cut22:30:203
134491530,3ptp4l0-21swapper/220:53:282
134491530,3ptp4l0-21swapper/120:55:171
134491530,3ptp4l0-21swapper/019:08:330
2975999525,8cyclictest7438-21apt-compat00:09:200
134491520,5ptp4l0-21swapper/319:26:083
134491520,5ptp4l0-21swapper/219:05:112
134491520,4ptp4l0-21swapper/322:35:173
134491520,4ptp4l0-21swapper/123:58:031
134491520,2ptp4l29758-21cyclictest22:55:433
2975999519,7cyclictest5069-21iostat_ios20:35:180
2975999516,10cyclictest20038-21irqrtprio00:35:200
267162510,5sleep00-21swapper/021:20:250
134491510,4ptp4l0-21swapper/323:57:183
134491510,4ptp4l0-21swapper/320:28:003
134491510,4ptp4l0-21swapper/200:35:582
134491510,4ptp4l0-21swapper/123:02:311
134491510,3ptp4l0-21swapper/122:17:261
134491510,3ptp4l0-21swapper/122:17:251
2975999507,11cyclictest21666-21sed22:20:170
2975999505,15cyclictest0-21swapper/000:00:230
2975999505,10cyclictest0-21swapper/019:15:240
2975999503,12cyclictest19631-21ls19:55:250
134491500,4ptp4l0-21swapper/323:25:303
134491500,4ptp4l0-21swapper/323:16:043
134491500,4ptp4l0-21swapper/220:45:322
134491500,4ptp4l0-21swapper/220:16:112
134491500,4ptp4l0-21swapper/219:45:272
134491500,4ptp4l0-21swapper/121:30:091
134491500,3ptp4l0-21swapper/200:31:492
2976099494,4cyclictest25-21ksoftirqd/122:38:501
134491490,4ptp4l0-21swapper/322:12:433
134491490,4ptp4l0-21swapper/223:47:312
134491490,4ptp4l0-21swapper/222:58:152
134491490,4ptp4l0-21swapper/221:40:182
134491490,4ptp4l0-21swapper/220:30:322
134491490,4ptp4l0-21swapper/119:24:341
134491490,4ptp4l0-21swapper/100:18:141
134491490,3ptp4l0-21swapper/323:42:293
134491490,3ptp4l0-21swapper/300:02:003
29760994817,4cyclictest25-21ksoftirqd/122:50:001
29760994817,4cyclictest25-21ksoftirqd/122:50:001
2975999488,14cyclictest28718-21ntp_kernel_pll_20:15:230
2975999487,7cyclictest19252-21if_enp4s022:15:180
2975999487,7cyclictest19252-21if_enp4s022:15:180
2975999483,9cyclictest0-21swapper/020:05:250
134491480,4ptp4l0-21swapper/321:21:283
134491480,4ptp4l0-21swapper/321:11:133
134491480,4ptp4l0-21swapper/121:41:561
134491480,3ptp4l0-21swapper/320:43:403
2975999479,8cyclictest0-21swapper/023:45:010
2975999477,7cyclictest24993-21ssh22:25:280
2975999475,7cyclictest0-21swapper/019:25:180
2975999473,10cyclictest1928-21mailstats22:45:260
2975999473,10cyclictest1928-21mailstats22:45:260
134491470,5ptp4l0-21swapper/119:05:571
134491470,4ptp4l0-21swapper/300:07:303
134491470,4ptp4l0-21swapper/219:55:202
134491470,4ptp4l0-21swapper/122:02:341
134491470,3ptp4l0-21swapper/121:47:551
29760994616,4cyclictest25-21ksoftirqd/121:20:201
2975999467,8cyclictest17004-21ntpq19:50:220
2975999466,6cyclictest0-21swapper/021:29:060
2975999465,8cyclictest137891phc2sys22:50:280
2975999465,10cyclictest0-21swapper/019:35:250
134491460,4ptp4l0-21swapper/322:05:503
134491460,4ptp4l0-21swapper/300:32:393
134491460,4ptp4l0-21swapper/223:51:252
134491460,4ptp4l0-21swapper/222:22:302
134491460,4ptp4l0-21swapper/100:37:441
134491460,3ptp4l0-21swapper/321:51:403
134491460,3ptp4l0-21swapper/220:57:392
134491460,3ptp4l0-21swapper/123:27:311
2975999457,7cyclictest30527-21iostat_ios20:20:190
2975999454,9cyclictest25235-21systemctl23:35:280
2975999454,7cyclictest20423-21apt-get21:10:020
2975999454,7cyclictest16063-21ls23:15:290
134491450,5ptp4l0-21swapper/223:15:142
134491450,4ptp4l0-21swapper/320:37:573
134491450,4ptp4l0-21swapper/121:39:341
134491450,3ptp4l33-21ksoftirqd/222:45:432
134491450,3ptp4l33-21ksoftirqd/222:45:432
134491450,3ptp4l0-21swapper/323:13:173
134491450,3ptp4l0-21swapper/319:50:153
134491450,3ptp4l0-21swapper/220:01:272
134491450,3ptp4l0-21swapper/200:16:332
134491450,3ptp4l0-21swapper/121:17:091
134491450,3ptp4l0-21swapper/100:10:101
2975999447,7cyclictest12432-21ntpq19:40:210
2975999446,7cyclictest20682-21ls23:25:280
2975999446,6cyclictest26426-21iostat_ios22:30:190
2975999445,7cyclictest3734-21users19:20:280
2975999445,7cyclictest13513-21meminfo00:20:190
134491440,9ptp4l0-21swapper/220:25:472
134491440,9ptp4l0-21swapper/020:29:340
134491440,6ptp4l0-21swapper/223:27:222
134491440,5ptp4l0-21swapper/321:25:143
134491440,3ptp4l0-21swapper/222:44:142
134491440,3ptp4l0-21swapper/119:13:421
29760994338,3cyclictest25-21ksoftirqd/123:20:001
29760994337,3cyclictest25-21ksoftirqd/123:15:001
29760994331,9cyclictest25-21ksoftirqd/119:50:151
2975999437,7cyclictest7521-21fschecks_count21:50:140
2975999433,8cyclictest18176-21ls00:30:210
29759994311,7cyclictest29998-21df19:10:130
134491430,5ptp4l28745-21ntp_states20:15:233
134491430,5ptp4l23919-21apt-get23:35:162
134491430,5ptp4l0-21swapper/221:23:452
134491430,4ptp4l9109-21apt-get20:45:110
134491430,4ptp4l10058-21meminfo20:45:193
134491430,4ptp4l0-21swapper/223:44:502
134491430,3ptp4l0-21swapper/322:42:553
134491430,3ptp4l0-21swapper/200:02:012
134491430,3ptp4l0-21swapper/123:47:551
134491430,3ptp4l0-21swapper/122:42:221
134491430,2ptp4l0-21swapper/120:53:201
2975999427,7cyclictest23605-21hddtemp_smartct21:15:180
2975999425,9cyclictest0-21swapper/023:10:260
134491420,9ptp4l0-21swapper/222:26:502
134491420,9ptp4l0-21swapper/221:59:482
134491420,9ptp4l0-21swapper/220:42:062
134491420,8ptp4l0-21swapper/221:03:292
134491420,5ptp4l7112-21users00:05:281
134491420,4ptp4l6181-21memory22:55:200
134491420,4ptp4l23178-21apt-get21:15:132
134491420,4ptp4l0-21swapper/123:22:511
134491420,4ptp4l0-21swapper/121:27:301
134491420,3ptp4l729-21apt-get23:55:132
134491420,10ptp4l0-21swapper/222:38:042
29760994136,3cyclictest25-21ksoftirqd/121:50:251
29760994136,3cyclictest25-21ksoftirqd/120:35:181
29760994112,9cyclictest25-21ksoftirqd/100:30:251
2975999418,13cyclictest26691-21ls20:10:290
134491410,8ptp4l0-21swapper/219:17:332
134491410,5ptp4l23387-21/usr/sbin/munin20:05:183
134491410,5ptp4l21392-21/usr/sbin/munin23:30:202
134491410,5ptp4l0-21swapper/321:15:123
134491410,5ptp4l0-21swapper/121:05:141
134491410,4ptp4l7932-21ntp_states20:40:211
134491410,4ptp4l7762-21meminfo20:40:190
134491410,4ptp4l32164-21apt-get21:35:012
134491410,4ptp4l3157-21memory20:30:201
134491410,4ptp4l2222-21df19:20:142
134491410,4ptp4l0-21swapper/322:53:183
134491410,4ptp4l0-21swapper/321:45:203
134491410,4ptp4l0-21swapper/319:40:183
134491410,4ptp4l0-21swapper/021:36:290
134491410,3ptp4l7954-21apt-get00:10:130
134491410,3ptp4l17575-21ls21:00:280
134491410,3ptp4l16997-21iostat22:10:170
134491410,3ptp4l16812-21apt-get23:20:123
134491410,3ptp4l14861-21apt-get00:25:121
134491410,3ptp4l12504-21strings20:50:220
134491410,3ptp4l0-21swapper/220:06:522
29762994034,4cyclictest41-21ksoftirqd/321:30:273
2976099404,2cyclictest121rcu_preempt20:45:131
29760994034,3cyclictest25-21ksoftirqd/122:30:001
29760994011,3cyclictest25-21ksoftirqd/121:05:001
134491400,9ptp4l0-21swapper/219:37:122
134491400,6ptp4l0-21swapper/119:56:391
134491400,6ptp4l0-21swapper/119:29:041
134491400,5ptp4l3346-21sendmail_mailst19:20:263
134491400,5ptp4l3277-21grep22:50:141
134491400,5ptp4l2976299cyclictest00:10:153
134491400,5ptp4l2975999cyclictest22:05:260
134491400,5ptp4l14489-21/usr/sbin/munin22:05:181
134491400,5ptp4l0-21swapper/220:35:212
134491400,5ptp4l0-21swapper/123:40:211
134491400,5ptp4l0-21swapper/021:45:150
134491400,4ptp4l8901-21meminfo00:10:212
134491400,4ptp4l2775-21iostat_ios20:30:180
134491400,4ptp4l0-21swapper/323:45:123
134491400,4ptp4l0-21swapper/320:58:123
134491400,4ptp4l0-21swapper/320:50:153
134491400,4ptp4l0-21swapper/300:20:113
134491400,4ptp4l0-21swapper/223:24:262
134491400,4ptp4l0-21swapper/222:14:062
134491400,4ptp4l0-21swapper/221:46:292
134491400,4ptp4l0-21swapper/221:05:302
134491400,4ptp4l0-21swapper/219:14:252
134491400,4ptp4l0-21swapper/200:25:062
134491400,4ptp4l0-21swapper/123:50:131
134491400,4ptp4l0-21swapper/122:20:281
134491400,4ptp4l0-21swapper/119:32:481
134491400,4ptp4l0-21swapper/021:59:570
134491400,4ptp4l0-21swapper/020:55:160
134491400,4ptp4l0-21swapper/000:17:300
134491400,3ptp4l25693-21iostat_ios20:10:191
134491400,3ptp4l18374-21apt-get21:05:123
134491400,3ptp4l13407-21irqstats00:20:181
134491400,3ptp4l0-21swapper/322:49:153
134491400,3ptp4l0-21swapper/322:49:153
134491400,3ptp4l0-21swapper/222:00:342
29760993934,3cyclictest25-21ksoftirqd/120:24:591
134491390,5ptp4l0-21swapper/319:55:063
134491390,5ptp4l0-21swapper/120:05:131
134491390,4ptp4l32727-21cat20:25:161
134491390,4ptp4l24673-21ntp_offset22:25:233
134491390,4ptp4l21295-21sed22:20:133
134491390,4ptp4l0-21swapper/321:57:413
134491390,4ptp4l0-21swapper/321:40:393
134491390,4ptp4l0-21swapper/320:00:103
134491390,4ptp4l0-21swapper/319:17:503
134491390,4ptp4l0-21swapper/319:05:143
134491390,4ptp4l0-21swapper/300:15:293
134491390,4ptp4l0-21swapper/223:10:542
134491390,4ptp4l0-21swapper/222:32:462
134491390,4ptp4l0-21swapper/222:07:172
134491390,4ptp4l0-21swapper/221:50:562
134491390,4ptp4l0-21swapper/221:30:152
134491390,4ptp4l0-21swapper/221:27:262
134491390,4ptp4l0-21swapper/220:10:212
134491390,4ptp4l0-21swapper/219:42:312
134491390,4ptp4l0-21swapper/219:31:482
134491390,4ptp4l0-21swapper/219:26:392
134491390,4ptp4l0-21swapper/200:25:002
134491390,4ptp4l0-21swapper/122:30:291
134491390,4ptp4l0-21swapper/122:10:181
134491390,4ptp4l0-21swapper/121:10:001
134491390,4ptp4l0-21swapper/119:45:151
134491390,4ptp4l0-21swapper/119:17:271
134491390,3ptp4l6343-21ntp_states22:55:211
134491390,3ptp4l20881-21apt-get21:10:122
29760993834,2cyclictest25-21ksoftirqd/100:00:141
29760993833,3cyclictest25-21ksoftirqd/123:35:231
134491380,4ptp4l0-21swapper/323:08:023
134491380,4ptp4l0-21swapper/323:03:073
134491380,4ptp4l0-21swapper/321:00:073
134491380,4ptp4l0-21swapper/319:34:343
134491380,4ptp4l0-21swapper/220:20:032
134491380,4ptp4l0-21swapper/200:08:572
134491380,4ptp4l0-21swapper/120:00:071
134491380,3ptp4l0-21swapper/322:17:293
134491380,3ptp4l0-21swapper/322:17:293
134491380,3ptp4l0-21swapper/319:45:213
134491380,3ptp4l0-21swapper/319:13:573
134491380,3ptp4l0-21swapper/219:50:252
29760993732,3cyclictest25-21ksoftirqd/123:30:191
134491370,4ptp4l0-21swapper/319:39:393
134491370,4ptp4l0-21swapper/223:00:262
134491370,4ptp4l0-21swapper/222:15:572
134491370,4ptp4l0-21swapper/222:15:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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