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2026-04-15 - 06:13
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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 Apr 15, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491640,3ptp4l31333-21apt00:20:002
134491630,17ptp4l20345-21processes21:35:252
16262996233,4cyclictest9-21ksoftirqd/021:45:010
16262996229,6cyclictest9-21ksoftirqd/022:45:250
16262996229,5cyclictest9-21ksoftirqd/022:15:000
134491620,6ptp4l0-21swapper/219:06:152
134491620,4ptp4l16459-21timerwakeupswit22:35:271
134491620,4ptp4l0-21swapper/323:30:213
16262996131,4cyclictest9-21ksoftirqd/000:30:140
16262996032,6cyclictest9-21ksoftirqd/022:40:250
16262996032,6cyclictest9-21ksoftirqd/022:40:250
134491600,4ptp4l0-21swapper/122:40:261
134491600,4ptp4l0-21swapper/122:40:261
16262995928,3cyclictest9-21ksoftirqd/019:30:190
16262995925,7cyclictest9-21ksoftirqd/021:35:190
134491590,4ptp4l0-21swapper/200:20:242
134491590,4ptp4l0-21swapper/119:16:541
16262995832,6cyclictest9-21ksoftirqd/023:30:010
16262995828,3cyclictest9-21ksoftirqd/022:29:590
134491580,4ptp4l0-21swapper/319:53:463
134491580,4ptp4l0-21swapper/119:20:151
134491580,3ptp4l0-21swapper/122:55:301
16262995731,6cyclictest9-21ksoftirqd/023:40:130
16262995727,4cyclictest9-21ksoftirqd/020:04:590
16262995726,9cyclictest9-21ksoftirqd/020:55:140
134491570,4ptp4l0-21swapper/320:04:323
16262995625,3cyclictest9-21ksoftirqd/000:10:200
16262995623,3cyclictest9-21ksoftirqd/022:03:530
134491560,3ptp4l0-21swapper/220:10:142
134491560,3ptp4l0-21swapper/122:51:011
187482550,4sleep11626399cyclictest20:25:001
1626299555,6cyclictest9-21ksoftirqd/000:30:010
16262995520,5cyclictest9-21ksoftirqd/020:15:000
134491550,4ptp4l0-21swapper/223:33:042
134491550,3ptp4l0-21swapper/123:48:151
134491550,3ptp4l0-21swapper/120:11:211
16262995424,6cyclictest9-21ksoftirqd/019:35:270
16262995421,5cyclictest9-21ksoftirqd/022:55:190
16262995419,3cyclictest9-21ksoftirqd/019:10:250
16262995322,3cyclictest9-21ksoftirqd/021:02:400
16262995319,5cyclictest9-21ksoftirqd/022:05:190
16262995319,5cyclictest9-21ksoftirqd/022:05:180
134491530,3ptp4l0-21swapper/120:45:521
134491530,11ptp4l0-21swapper/223:00:212
1626299525,6cyclictest9-21ksoftirqd/019:50:000
1626299523,4cyclictest9-21ksoftirqd/019:25:230
1626299523,3cyclictest121rcu_preempt20:25:180
16262995224,6cyclictest9-21ksoftirqd/022:35:150
16262995224,6cyclictest9-21ksoftirqd/021:20:220
16262995224,3cyclictest9-21ksoftirqd/020:50:170
16262995219,3cyclictest9-21ksoftirqd/023:45:270
1626299521,6cyclictest9-21ksoftirqd/020:20:220
134491520,4ptp4l1626399cyclictest19:50:111
1626299515,5cyclictest9-21ksoftirqd/020:45:160
1626299514,3cyclictest9-21ksoftirqd/019:40:180
1626299512,6cyclictest9-21ksoftirqd/020:30:210
1626299512,5cyclictest9-21ksoftirqd/019:50:120
1626299512,3cyclictest0-21swapper/021:25:240
16262995118,5cyclictest9-21ksoftirqd/020:15:260
16262995118,4cyclictest9-21ksoftirqd/000:20:270
134491510,4ptp4l0-21swapper/100:25:181
134491510,4ptp4l0-21swapper/023:36:540
1626299503,8cyclictest9-21ksoftirqd/022:15:240
1626299503,6cyclictest9-21ksoftirqd/023:10:220
1626299502,6cyclictest9-21ksoftirqd/023:55:280
16262995020,3cyclictest9-21ksoftirqd/000:17:550
16262995019,5cyclictest9-21ksoftirqd/021:50:190
16262995019,3cyclictest9-21ksoftirqd/020:09:110
16262995018,3cyclictest9-21ksoftirqd/021:05:490
16262995018,3cyclictest9-21ksoftirqd/019:18:010
134491500,5ptp4l0-21swapper/122:24:121
134491500,4ptp4l0-21swapper/322:00:143
134491500,4ptp4l0-21swapper/300:37:533
134491500,4ptp4l0-21swapper/223:23:412
134491500,4ptp4l0-21swapper/220:15:252
134491500,4ptp4l0-21swapper/200:08:462
134491500,3ptp4l0-21swapper/119:55:261
134491500,3ptp4l0-21swapper/100:05:001
1626299491,7cyclictest121rcu_preempt23:23:440
16262994917,4cyclictest9-21ksoftirqd/021:48:210
16262994916,4cyclictest9-21ksoftirqd/021:11:200
134491490,4ptp4l0-21swapper/222:00:062
134491490,4ptp4l0-21swapper/219:21:532
134491490,4ptp4l0-21swapper/200:34:272
134491490,4ptp4l0-21swapper/123:58:251
134491490,4ptp4l0-21swapper/120:00:321
134491490,10ptp4l0-21swapper/321:40:263
1626299485,3cyclictest9-21ksoftirqd/021:30:290
16262994837,3cyclictest9-21ksoftirqd/021:55:510
16262994836,3cyclictest9-21ksoftirqd/000:00:190
1626299483,3cyclictest9-21ksoftirqd/019:55:130
1626299483,3cyclictest0-21swapper/020:45:010
1626299481,4cyclictest0-21swapper/019:25:000
1626299480,2cyclictest121rcu_preempt00:35:120
134491480,9ptp4l0-21swapper/020:37:270
134491480,5ptp4l0-21swapper/223:12:402
134491480,4ptp4l0-21swapper/320:14:163
134491480,4ptp4l0-21swapper/223:51:332
134491480,4ptp4l0-21swapper/222:43:542
134491480,4ptp4l0-21swapper/222:43:542
134491480,4ptp4l0-21swapper/222:16:482
134491480,4ptp4l0-21swapper/221:09:452
134491480,4ptp4l0-21swapper/220:02:572
134491480,4ptp4l0-21swapper/121:55:551
134491480,4ptp4l0-21swapper/121:14:521
134491480,4ptp4l0-21swapper/100:31:481
134491480,3ptp4l0-21swapper/300:22:173
134491480,3ptp4l0-21swapper/219:39:592
134491480,12ptp4l0-21swapper/219:55:162
1626299475,3cyclictest9-21ksoftirqd/022:20:180
1626299475,2cyclictest9-21ksoftirqd/021:15:160
1626299473,2cyclictest9-21ksoftirqd/022:50:130
1626299470,6cyclictest9-21ksoftirqd/023:05:260
134491470,4ptp4l0-21swapper/223:09:092
134491470,3ptp4l0-21swapper/320:18:133
134491470,11ptp4l16182-21cut19:10:010
134491470,11ptp4l0-21swapper/221:22:242
1626299463,3cyclictest9-21ksoftirqd/023:00:180
1626299461,2cyclictest121rcu_preempt23:35:010
1626299460,5cyclictest18007-21kernelversion23:50:160
134491460,4ptp4l0-21swapper/321:28:543
134491460,4ptp4l0-21swapper/222:39:552
134491460,3ptp4l0-21swapper/321:57:443
134491460,3ptp4l0-21swapper/320:40:183
134491460,3ptp4l0-21swapper/200:02:182
134491460,3ptp4l0-21swapper/119:33:041
134491460,11ptp4l24485-21fschecks_time22:55:152
1626299454,5cyclictest9-21ksoftirqd/022:30:140
134491450,4ptp4l0-21swapper/322:10:213
134491450,4ptp4l0-21swapper/321:53:213
134491450,10ptp4l0-21swapper/319:05:133
1626299443,6cyclictest9-21ksoftirqd/023:15:200
134491440,9ptp4l0-21swapper/321:32:053
134491440,4ptp4l30386-21apt-get19:40:132
134491440,4ptp4l0-21swapper/323:41:373
134491440,4ptp4l0-21swapper/319:46:493
134491440,3ptp4l0-21swapper/223:42:002
134491440,3ptp4l0-21swapper/200:35:452
134491440,3ptp4l0-21swapper/121:50:411
134491440,11ptp4l1174-21wc19:45:192
134491440,11ptp4l0-21swapper/320:25:193
16263994338,3cyclictest25-21ksoftirqd/123:40:001
16262994323,3cyclictest9-21ksoftirqd/000:05:450
134491430,9ptp4l0-21swapper/221:55:142
134491430,3ptp4l0-21swapper/222:20:152
134491420,9ptp4l0-21swapper/221:00:262
134491420,9ptp4l0-21swapper/220:47:412
134491420,9ptp4l0-21swapper/220:37:262
134491420,5ptp4l0-21swapper/300:10:033
134491420,5ptp4l0-21swapper/220:50:132
134491420,5ptp4l0-21swapper/200:10:032
134491420,4ptp4l24263-21diskstats21:45:161
134491420,4ptp4l0-21swapper/321:48:153
134491420,4ptp4l0-21swapper/221:45:382
134491420,4ptp4l0-21swapper/122:16:591
134491420,3ptp4l0-21swapper/319:18:203
16263994137,3cyclictest25-21ksoftirqd/120:20:011
16263994136,3cyclictest25-21ksoftirqd/121:34:591
134491410,6ptp4l0-21swapper/119:08:021
134491410,5ptp4l16726-21hddtemp_smartct19:10:151
134491410,5ptp4l0-21swapper/323:35:153
134491410,5ptp4l0-21swapper/300:15:143
134491410,5ptp4l0-21swapper/223:35:122
134491410,5ptp4l0-21swapper/220:40:142
134491410,5ptp4l0-21swapper/220:28:262
134491410,4ptp4l6213-21iostat_ios23:25:171
134491410,4ptp4l4690-21apt-get19:55:023
134491410,4ptp4l27198-21meminfo21:50:202
134491410,4ptp4l14318-21apt-get21:25:132
134491410,4ptp4l13393-21irqstats23:40:181
134491410,4ptp4l0-21swapper/322:25:203
134491410,4ptp4l0-21swapper/223:15:592
134491410,4ptp4l0-21swapper/120:05:241
134491410,3ptp4l7406-21apt-get21:10:142
134491410,3ptp4l4230-21ls21:00:273
134491410,3ptp4l3381-21apt-get22:10:101
134491410,3ptp4l16681-21apt-get20:20:132
134491410,3ptp4l0-21swapper/222:08:282
134491410,3ptp4l0-21swapper/222:08:282
134491400,7ptp4l0-21swapper/323:50:123
134491400,7ptp4l0-21swapper/320:52:383
134491400,5ptp4l30694-21diskstats19:40:161
134491400,5ptp4l0-21swapper/323:10:123
134491400,5ptp4l0-21swapper/319:22:213
134491400,5ptp4l0-21swapper/123:10:261
134491400,5ptp4l0-21swapper/122:45:141
134491400,5ptp4l0-21swapper/120:55:231
134491400,4ptp4l603-21df20:55:142
134491400,4ptp4l4870-21ls00:30:213
134491400,4ptp4l12903-21diskstats22:30:161
134491400,4ptp4l0-21swapper/323:20:163
134491400,4ptp4l0-21swapper/321:15:203
134491400,4ptp4l0-21swapper/319:29:193
134491400,4ptp4l0-21swapper/222:50:442
134491400,4ptp4l0-21swapper/222:49:222
134491400,4ptp4l0-21swapper/222:10:112
134491400,4ptp4l0-21swapper/221:40:142
134491400,4ptp4l0-21swapper/221:15:152
134491400,4ptp4l0-21swapper/220:05:202
134491400,4ptp4l0-21swapper/219:10:052
134491400,4ptp4l0-21swapper/200:25:432
134491400,4ptp4l0-21swapper/121:25:141
134491400,3ptp4l5639-21apt-get23:25:122
134491400,3ptp4l5109-21apt-get21:05:141
134491400,3ptp4l26724-21df_inode23:00:151
134491400,3ptp4l21274-21apt-get20:30:113
134491400,3ptp4l14850-21apt-get23:45:122
134491400,3ptp4l1451-21hddtemp_smartct22:05:161
134491400,3ptp4l1451-21hddtemp_smartct22:05:161
134491400,3ptp4l0-21swapper/321:35:203
16263993934,3cyclictest25-21ksoftirqd/121:40:001
134491390,6ptp4l3881-21if_err_enp1s023:20:171
134491390,5ptp4l1626599cyclictest23:25:103
134491390,5ptp4l0-21swapper/320:55:133
134491390,5ptp4l0-21swapper/120:50:171
134491390,4ptp4l29139-21/usr/sbin/munin19:35:241
134491390,4ptp4l19287-21diskstats20:25:161
134491390,4ptp4l0-21swapper/323:16:383
134491390,4ptp4l0-21swapper/323:06:173
134491390,4ptp4l0-21swapper/323:00:213
134491390,4ptp4l0-21swapper/322:55:323
134491390,4ptp4l0-21swapper/322:41:423
134491390,4ptp4l0-21swapper/322:41:423
134491390,4ptp4l0-21swapper/322:36:123
134491390,4ptp4l0-21swapper/321:20:203
134491390,4ptp4l0-21swapper/321:05:193
134491390,4ptp4l0-21swapper/320:05:163
134491390,4ptp4l0-21swapper/319:45:013
134491390,4ptp4l0-21swapper/319:10:223
134491390,4ptp4l0-21swapper/300:00:033
134491390,4ptp4l0-21swapper/222:30:522
134491390,4ptp4l0-21swapper/222:26:372
134491390,4ptp4l0-21swapper/221:30:422
134491390,4ptp4l0-21swapper/219:54:492
134491390,4ptp4l0-21swapper/219:34:062
134491390,4ptp4l0-21swapper/122:27:591
134491390,4ptp4l0-21swapper/121:44:231
134491390,4ptp4l0-21swapper/119:25:471
134491390,4ptp4l0-21swapper/100:15:251
134491390,4ptp4l0-21swapper/100:14:591
134491390,4ptp4l0-21swapper/100:04:441
134491390,3ptp4l31562-21hddtemp_smartct22:00:171
134491390,3ptp4l24376-21memory19:25:212
134491390,3ptp4l1538-21iostat23:15:201
134491390,3ptp4l0-21swapper/321:10:213
134491390,3ptp4l0-21swapper/300:25:153
134491390,3ptp4l0-21swapper/300:05:153
134491390,3ptp4l0-21swapper/123:30:101
16265993832,3cyclictest41-21ksoftirqd/320:20:193
16263993833,3cyclictest25-21ksoftirqd/120:40:001
134491380,4ptp4l0-21swapper/323:45:143
134491380,4ptp4l0-21swapper/322:50:253
134491380,4ptp4l0-21swapper/322:15:283
134491380,4ptp4l0-21swapper/322:05:143
134491380,4ptp4l0-21swapper/322:05:143
134491380,4ptp4l0-21swapper/320:45:163
134491380,4ptp4l0-21swapper/319:35:313
134491380,4ptp4l0-21swapper/319:30:433
134491380,4ptp4l0-21swapper/220:30:412
134491380,4ptp4l0-21swapper/219:15:302
134491380,4ptp4l0-21swapper/123:08:081
134491380,4ptp4l0-21swapper/121:15:021
134491380,4ptp4l0-21swapper/120:31:331
134491380,4ptp4l0-21swapper/119:45:191
134491380,4ptp4l0-21swapper/100:36:371
134491380,3ptp4l0-21swapper/323:55:243
134491380,3ptp4l0-21swapper/322:20:143
134491380,3ptp4l0-21swapper/223:55:182
134491380,3ptp4l0-21swapper/123:50:551
134491370,4ptp4l0-21swapper/322:30:123
134491370,3ptp4l0-21swapper/320:35:173
134491370,3ptp4l0-21swapper/121:21:431
134491370,3ptp4l0-21swapper/121:01:491
134491370,3ptp4l0-21swapper/120:40:241
134491370,3ptp4l0-21swapper/100:22:561
134491350,4ptp4l0-21swapper/322:47:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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