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2026-04-06 - 09:54
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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 Apr 06, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1297721640,5sleep22378899cyclictest23:25:142
72632800,6sleep00-21swapper/022:00:300
6402700,5sleep20-21swapper/220:40:002
134491620,4ptp4l10662-21taskset00:28:530
134491610,5ptp4l0-21swapper/121:30:151
36812590,3sleep32378999cyclictest23:05:123
134491590,5ptp4l27595-21memory21:35:210
134491590,3ptp4l23397-21ps22:35:231
134491580,3ptp4l4455-21memory21:55:191
134491580,3ptp4l0-21swapper/119:30:241
134491580,3ptp4l0-21swapper/000:00:180
134491570,3ptp4l0-21swapper/120:20:251
134491560,4ptp4l0-21swapper/100:09:161
134491560,3ptp4l0-21swapper/121:45:281
134491560,3ptp4l0-21swapper/121:45:281
134491560,3ptp4l0-21swapper/020:35:190
134491550,5ptp4l24087-21df_abs19:10:140
134491550,3ptp4l0-21swapper/323:34:303
134491550,16ptp4l0-21swapper/119:05:151
134491540,3ptp4l0-21swapper/120:00:181
134491530,4ptp4l0-21swapper/120:39:551
134491530,4ptp4l0-21swapper/023:47:380
134491530,3ptp4l0-21swapper/100:00:591
134491520,4ptp4l0-21swapper/019:05:260
134491510,4ptp4l0-21swapper/122:03:121
134491510,4ptp4l0-21swapper/121:35:251
134491510,4ptp4l0-21swapper/019:36:080
134491510,21ptp4l25-21ksoftirqd/122:45:561
134491510,21ptp4l25-21ksoftirqd/122:45:561
134491500,4ptp4l0-21swapper/200:35:342
134491500,4ptp4l0-21swapper/119:41:271
134491500,4ptp4l0-21swapper/022:50:330
134491500,4ptp4l0-21swapper/021:43:170
134491500,4ptp4l0-21swapper/020:25:030
134491500,3ptp4l0-21swapper/222:21:332
134491500,3ptp4l0-21swapper/122:25:191
134491500,3ptp4l0-21swapper/122:13:231
134491500,18ptp4l0-21swapper/221:22:402
134491490,4ptp4l0-21swapper/123:09:211
134491490,4ptp4l0-21swapper/122:30:331
134491490,4ptp4l0-21swapper/122:20:021
134491490,4ptp4l0-21swapper/119:54:561
134491490,4ptp4l0-21swapper/119:19:121
134491490,4ptp4l0-21swapper/023:05:210
134491490,4ptp4l0-21swapper/022:08:190
134491490,3ptp4l0-21swapper/020:46:420
134491490,17ptp4l0-21swapper/322:26:583
134491490,11ptp4l0-21swapper/021:24:570
23789994833,6cyclictest41-21ksoftirqd/322:46:213
23789994833,6cyclictest41-21ksoftirqd/322:46:213
134491480,4ptp4l401ktimersoftd/319:40:153
134491480,4ptp4l0-21swapper/323:57:123
134491480,4ptp4l0-21swapper/320:29:063
134491480,4ptp4l0-21swapper/220:28:202
134491480,4ptp4l0-21swapper/120:49:021
134491480,4ptp4l0-21swapper/023:34:530
134491480,4ptp4l0-21swapper/021:31:310
134491480,4ptp4l0-21swapper/021:07:120
134491480,4ptp4l0-21swapper/020:56:370
134491480,4ptp4l0-21swapper/020:56:370
134491480,4ptp4l0-21swapper/020:18:040
134491480,4ptp4l0-21swapper/019:33:320
134491480,4ptp4l0-21swapper/000:38:120
134491480,3ptp4l0-21swapper/022:24:020
134491470,5ptp4l391rcuc/323:25:263
134491470,4ptp4l0-21swapper/119:25:391
134491470,4ptp4l0-21swapper/100:34:221
134491470,4ptp4l0-21swapper/100:17:021
134491470,4ptp4l0-21swapper/022:14:410
134491470,4ptp4l0-21swapper/021:27:380
134491470,4ptp4l0-21swapper/019:22:340
134491470,3ptp4l0-21swapper/320:54:123
134491470,3ptp4l0-21swapper/023:50:390
134491470,3ptp4l0-21swapper/023:01:190
134491470,11ptp4l0-21swapper/021:15:240
134491460,4ptp4l0-21swapper/323:17:103
134491460,4ptp4l0-21swapper/323:17:103
134491460,4ptp4l0-21swapper/121:12:101
134491460,4ptp4l0-21swapper/120:07:271
134491460,4ptp4l0-21swapper/119:20:051
134491460,4ptp4l0-21swapper/023:42:220
134491460,4ptp4l0-21swapper/021:14:580
134491460,3ptp4l121rcu_preempt00:20:521
134491460,3ptp4l0-21swapper/122:58:361
134491460,3ptp4l0-21swapper/023:25:260
134491460,3ptp4l0-21swapper/021:45:490
134491460,3ptp4l0-21swapper/021:45:490
134491460,3ptp4l0-21swapper/000:24:560
23786994514,4cyclictest9-21ksoftirqd/022:28:070
134491450,4ptp4l0-21swapper/119:57:011
134491450,4ptp4l0-21swapper/021:55:470
134491450,4ptp4l0-21swapper/021:52:350
134491450,4ptp4l0-21swapper/019:17:540
134491450,3ptp4l0-21swapper/022:57:210
2378699449,6cyclictest9-21ksoftirqd/023:20:200
23786994411,4cyclictest9-21ksoftirqd/020:00:210
134491440,5ptp4l4090-21apt-get00:15:122
134491440,4ptp4l0-21swapper/120:26:061
134491440,4ptp4l0-21swapper/022:40:310
134491440,3ptp4l0-21swapper/321:28:323
134491440,11ptp4l8224-21cut23:15:003
134491440,10ptp4l0-21swapper/222:35:052
23789994338,3cyclictest41-21ksoftirqd/319:40:013
23789994317,5cyclictest41-21ksoftirqd/320:30:183
2378699432,2cyclictest121rcu_preempt00:15:220
134491430,9ptp4l0-21swapper/219:36:312
134491430,5ptp4l0-21swapper/219:09:582
134491430,5ptp4l0-21swapper/023:15:260
134491430,5ptp4l0-21swapper/023:15:260
134491430,4ptp4l28581-21apt-get20:30:112
134491430,4ptp4l1739-21apt-get00:10:142
134491430,3ptp4l0-21swapper/100:10:071
134491430,10ptp4l0-21swapper/022:39:340
2378699421,5cyclictest134491ptp4l23:55:290
134491420,9ptp4l0-21swapper/222:42:392
134491420,9ptp4l0-21swapper/222:00:052
134491420,6ptp4l30119-21ls22:50:201
134491420,6ptp4l0-21swapper/121:21:041
134491420,5ptp4l0-21swapper/123:10:191
134491420,4ptp4l29103-21apt-get22:50:113
134491420,3ptp4l0-21swapper/020:44:550
23789994136,3cyclictest41-21ksoftirqd/300:10:013
23788994136,3cyclictest33-21ksoftirqd/223:00:002
134491410,9ptp4l0-21swapper/223:32:062
134491410,9ptp4l0-21swapper/222:53:512
134491410,9ptp4l0-21swapper/219:51:412
134491410,9ptp4l0-21swapper/219:45:532
134491410,8ptp4l0-21swapper/222:34:542
134491410,5ptp4l27363-21iostat_ios23:55:181
134491410,5ptp4l25725-21ps22:40:233
134491410,4ptp4l8845-21iostat_ios23:15:171
134491410,4ptp4l8845-21iostat_ios23:15:171
134491410,4ptp4l10482-21df21:00:140
134491410,4ptp4l0-21swapper/300:00:573
134491410,4ptp4l0-21swapper/019:29:390
134491410,3ptp4l19894-21apt-get23:40:112
134491410,3ptp4l17220-21apt-get21:15:131
23789994036,3cyclictest41-21ksoftirqd/323:40:013
23789994036,2cyclictest41-21ksoftirqd/322:40:003
134491400,5ptp4l0-21swapper/322:55:233
134491400,5ptp4l0-21swapper/319:30:123
134491400,5ptp4l0-21swapper/120:30:191
134491400,5ptp4l0-21swapper/020:30:140
134491400,5ptp4l0-21swapper/019:50:170
134491400,4ptp4l29533-21iostat_ios21:40:171
134491400,4ptp4l2746-21memory00:10:230
134491400,4ptp4l2378999cyclictest21:37:543
134491400,4ptp4l21008-21ntp_states23:40:231
134491400,4ptp4l19435-21apt-get22:30:030
134491400,4ptp4l0-21swapper/300:11:193
134491400,4ptp4l0-21swapper/221:40:062
134491400,4ptp4l0-21swapper/221:05:532
134491400,4ptp4l0-21swapper/023:39:520
134491400,4ptp4l0-21swapper/020:05:160
134491400,3ptp4l7002-21python20:50:250
134491400,3ptp4l5294-21apt-get19:40:100
134491400,3ptp4l24296-21df_inode20:20:140
134491400,3ptp4l23399-21ls21:25:281
134491400,3ptp4l19366-21apt-get20:10:111
134491400,3ptp4l17888-21diskstats23:35:141
134491400,3ptp4l10273-21apt-get21:00:121
23789993930,7cyclictest41-21ksoftirqd/300:15:123
23788993935,2cyclictest33-21ksoftirqd/200:25:182
23788993934,3cyclictest33-21ksoftirqd/222:30:012
23786993934,3cyclictest9-21ksoftirqd/000:35:000
23786993933,3cyclictest9-21ksoftirqd/020:15:000
134491390,7ptp4l0-21swapper/000:06:140
134491390,5ptp4l0-21swapper/223:01:402
134491390,5ptp4l0-21swapper/221:34:112
134491390,5ptp4l0-21swapper/220:49:032
134491390,5ptp4l0-21swapper/120:15:151
134491390,4ptp4l23870-21users23:45:281
134491390,4ptp4l1301-21snmpd21:19:493
134491390,4ptp4l1301-21snmpd00:05:222
134491390,4ptp4l0-21swapper/223:56:382
134491390,4ptp4l0-21swapper/223:52:072
134491390,4ptp4l0-21swapper/223:50:002
134491390,4ptp4l0-21swapper/223:37:372
134491390,4ptp4l0-21swapper/223:17:252
134491390,4ptp4l0-21swapper/223:17:252
134491390,4ptp4l0-21swapper/221:25:192
134491390,4ptp4l0-21swapper/221:01:472
134491390,4ptp4l0-21swapper/219:56:202
134491390,4ptp4l0-21swapper/219:42:002
134491390,4ptp4l0-21swapper/219:19:392
134491390,4ptp4l0-21swapper/123:50:201
134491390,4ptp4l0-21swapper/122:40:111
134491390,4ptp4l0-21swapper/122:06:551
134491390,4ptp4l0-21swapper/120:57:481
134491390,4ptp4l0-21swapper/120:57:481
134491390,4ptp4l0-21swapper/120:52:281
134491390,4ptp4l0-21swapper/100:25:151
134491390,4ptp4l0-21swapper/023:14:520
134491390,3ptp4l2175-21irqstats23:00:191
134491390,3ptp4l13510-21df00:35:151
134491390,3ptp4l0-21swapper/222:11:082
23789993833,3cyclictest41-21ksoftirqd/319:55:253
2378899381,2cyclictest121rcu_preempt22:46:212
2378899381,2cyclictest121rcu_preempt22:46:212
23787993833,3cyclictest25-21ksoftirqd/119:40:011
134491380,4ptp4l0-21swapper/322:10:563
134491380,4ptp4l0-21swapper/321:58:223
134491380,4ptp4l0-21swapper/321:40:233
134491380,4ptp4l0-21swapper/321:07:053
134491380,4ptp4l0-21swapper/319:50:273
134491380,4ptp4l0-21swapper/319:15:193
134491380,4ptp4l0-21swapper/300:26:563
134491380,4ptp4l0-21swapper/223:23:572
134491380,4ptp4l0-21swapper/223:14:512
134491380,4ptp4l0-21swapper/223:05:362
134491380,4ptp4l0-21swapper/222:16:242
134491380,4ptp4l0-21swapper/222:16:242
134491380,4ptp4l0-21swapper/222:07:112
134491380,4ptp4l0-21swapper/221:51:342
134491380,4ptp4l0-21swapper/221:46:232
134491380,4ptp4l0-21swapper/221:46:232
134491380,4ptp4l0-21swapper/221:39:032
134491380,4ptp4l0-21swapper/221:19:422
134491380,4ptp4l0-21swapper/221:11:332
134491380,4ptp4l0-21swapper/220:40:152
134491380,4ptp4l0-21swapper/220:21:592
134491380,4ptp4l0-21swapper/220:06:162
134491380,4ptp4l0-21swapper/220:01:522
134491380,4ptp4l0-21swapper/219:32:122
134491380,4ptp4l0-21swapper/219:25:052
134491380,4ptp4l0-21swapper/219:21:052
134491380,4ptp4l0-21swapper/200:30:082
134491380,4ptp4l0-21swapper/200:24:052
134491380,4ptp4l0-21swapper/200:01:482
134491380,4ptp4l0-21swapper/123:30:181
134491380,4ptp4l0-21swapper/123:20:141
134491380,4ptp4l0-21swapper/121:06:171
134491380,4ptp4l0-21swapper/119:45:171
134491380,4ptp4l0-21swapper/119:14:201
134491380,4ptp4l0-21swapper/022:45:120
134491380,4ptp4l0-21swapper/022:45:120
134491380,4ptp4l0-21swapper/022:15:210
134491380,4ptp4l0-21swapper/022:15:210
134491380,4ptp4l0-21swapper/019:55:220
134491380,4ptp4l0-21swapper/019:45:130
134491380,3ptp4l1448-21df_inode21:50:151
134491380,3ptp4l13463-21iostat_ios23:25:181
134491380,3ptp4l13284-21iostat_ios22:15:171
134491380,3ptp4l13284-21iostat_ios22:15:171
134491380,3ptp4l0-21swapper/220:50:512
134491380,2ptp4l1292-21diskstats20:40:141
134491370,5ptp4l0-21swapper/320:01:273
134491370,4ptp4l0-21swapper/323:50:263
134491370,4ptp4l0-21swapper/323:20:033
134491370,4ptp4l0-21swapper/323:02:013
134491370,4ptp4l0-21swapper/322:30:363
134491370,4ptp4l0-21swapper/322:19:073
134491370,4ptp4l0-21swapper/322:19:073
134491370,4ptp4l0-21swapper/322:09:143
134491370,4ptp4l0-21swapper/321:46:063
134491370,4ptp4l0-21swapper/321:46:063
134491370,4ptp4l0-21swapper/321:31:293
134491370,4ptp4l0-21swapper/321:14:033
134491370,4ptp4l0-21swapper/321:00:473
134491370,4ptp4l0-21swapper/320:47:013
134491370,4ptp4l0-21swapper/320:42:023
134491370,4ptp4l0-21swapper/320:38:343
134491370,4ptp4l0-21swapper/320:15:283
134491370,4ptp4l0-21swapper/319:09:583
134491370,4ptp4l0-21swapper/221:55:422
134491370,4ptp4l0-21swapper/220:56:432
134491370,4ptp4l0-21swapper/220:56:432
134491370,4ptp4l0-21swapper/220:17:372
134491370,4ptp4l0-21swapper/219:11:142
134491370,3ptp4l0-21swapper/322:01:573
134491370,3ptp4l0-21swapper/220:13:092
134491360,4ptp4l0-21swapper/322:22:293
134491360,4ptp4l0-21swapper/321:54:483
134491360,4ptp4l0-21swapper/319:26:543
134491360,3ptp4l21460-21ls23:40:263
134491360,3ptp4l0-21swapper/323:48:443
134491360,3ptp4l0-21swapper/321:24:353
134491360,3ptp4l0-21swapper/319:22:433
134491360,3ptp4l0-21swapper/300:23:313
23789993530,3cyclictest41-21ksoftirqd/321:00:013
23789993530,3cyclictest41-21ksoftirqd/321:00:003
134491350,4ptp4l0-21swapper/300:36:583
134491350,4ptp4l0-21swapper/300:30:023
23789993427,3cyclictest41-21ksoftirqd/319:45:193
134491330,3ptp4l0-21swapper/319:10:023
23789993228,3cyclictest41-21ksoftirqd/320:05:173
23789993227,3cyclictest41-21ksoftirqd/320:20:043
23789992925,3cyclictest41-21ksoftirqd/320:10:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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