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2026-06-14 - 04:08
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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 Sun Jun 14, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324342740,6sleep31400599cyclictest00:25:233
134491630,3ptp4l0-21swapper/219:25:162
134491620,4ptp4l0-21swapper/222:25:212
134491590,4ptp4l0-21swapper/120:00:121
134491590,4ptp4l0-21swapper/120:00:121
134491590,3ptp4l0-21swapper/221:23:202
134491590,3ptp4l0-21swapper/122:00:271
134491590,3ptp4l0-21swapper/120:20:261
134491570,4ptp4l0-21swapper/222:50:062
134491570,3ptp4l0-21swapper/123:10:221
134491560,4ptp4l0-21swapper/220:54:092
134491550,4ptp4l0-21swapper/200:17:242
134491540,4ptp4l0-21swapper/221:36:082
134491540,4ptp4l0-21swapper/221:00:032
165122530,6sleep20-21swapper/220:25:002
134491530,4ptp4l0-21swapper/221:55:092
134491530,4ptp4l0-21swapper/221:46:222
134491530,2ptp4l0-21swapper/000:29:530
134491520,4ptp4l0-21swapper/200:14:512
134491520,4ptp4l0-21swapper/019:08:170
134491520,3ptp4l0-21swapper/219:45:312
134491510,3ptp4l0-21swapper/200:06:142
134491510,2ptp4l0-21swapper/020:57:580
134491500,4ptp4l0-21swapper/222:08:012
134491500,3ptp4l0-21swapper/220:37:362
134491500,3ptp4l0-21swapper/023:05:210
134491500,3ptp4l0-21swapper/023:05:210
134491490,4ptp4l1400199cyclictest23:27:070
134491490,4ptp4l0-21swapper/223:32:102
134491490,10ptp4l0-21swapper/219:20:072
134491480,5ptp4l0-21swapper/222:04:422
134491480,4ptp4l0-21swapper/223:13:232
134491480,4ptp4l0-21swapper/222:13:442
134491480,13ptp4l0-21swapper/222:35:112
134491470,7ptp4l12071-21iostat19:05:171
1400299463,2cyclictest134491ptp4l19:44:051
134491460,4ptp4l0-21swapper/200:03:472
134491460,3ptp4l0-21swapper/023:51:350
134491450,4ptp4l0-21swapper/122:21:341
134491450,3ptp4l1400199cyclictest00:06:400
134491450,3ptp4l0-21swapper/123:52:411
134491450,3ptp4l0-21swapper/120:57:301
134491450,10ptp4l3376-21ls00:35:002
14004994438,4cyclictest33-21ksoftirqd/223:00:002
1400199442,39cyclictest5567-21cron00:40:000
1400199442,39cyclictest5567-21cron00:40:000
134491440,9ptp4l0-21swapper/222:15:352
134491440,9ptp4l0-21swapper/221:11:422
134491440,9ptp4l0-21swapper/022:25:540
134491440,7ptp4l0-21swapper/119:10:011
134491440,6ptp4l33-21ksoftirqd/200:35:252
134491440,6ptp4l33-21ksoftirqd/200:35:252
134491440,6ptp4l0-21swapper/200:20:132
134491440,5ptp4l33-21ksoftirqd/223:46:562
134491440,5ptp4l0-21swapper/323:15:113
134491440,5ptp4l0-21swapper/000:10:260
134491440,3ptp4l0-21swapper/121:52:431
134491440,3ptp4l0-21swapper/119:27:401
134491430,9ptp4l0-21swapper/222:22:562
134491430,5ptp4l5436-21df_inode21:10:160
134491430,5ptp4l0-21swapper/300:35:233
134491430,5ptp4l0-21swapper/300:35:233
134491430,5ptp4l0-21swapper/022:30:150
134491430,4ptp4l26539-21iostat_ios20:45:180
134491430,4ptp4l22263-21ntp_states20:35:233
134491430,3ptp4l28959-21apt-get00:20:133
134491430,3ptp4l0-21swapper/123:25:131
134491430,3ptp4l0-21swapper/123:05:121
134491430,3ptp4l0-21swapper/123:05:121
14001994235,4cyclictest21597-21wc00:05:000
134491420,9ptp4l0-21swapper/221:27:002
134491420,9ptp4l0-21swapper/220:33:532
134491420,9ptp4l0-21swapper/220:12:232
134491420,8ptp4l0-21swapper/223:08:272
134491420,8ptp4l0-21swapper/223:08:272
134491420,8ptp4l0-21swapper/220:47:522
134491420,5ptp4l9802-21apt-get21:20:111
134491420,5ptp4l3789-21ntp_states19:55:231
134491420,5ptp4l0-21swapper/321:55:173
134491420,4ptp4l5135-21apt-get21:10:131
134491420,4ptp4l24628-21ntp_states19:30:240
134491420,4ptp4l24628-21ntp_states19:30:240
134491420,4ptp4l21783-21iostat_ios19:25:170
134491420,4ptp4l14973-21iostat_ios21:30:180
134491420,4ptp4l12033-21apt-get22:35:113
134491420,4ptp4l0-21swapper/100:35:211
134491420,4ptp4l0-21swapper/100:35:211
134491420,4ptp4l0-21swapper/022:52:110
134491410,9ptp4l0-21swapper/221:43:322
134491410,9ptp4l0-21swapper/221:06:242
134491410,8ptp4l0-21swapper/220:01:082
134491410,8ptp4l0-21swapper/220:01:082
134491410,8ptp4l0-21swapper/100:28:291
134491410,7ptp4l0-21swapper/223:57:352
134491410,5ptp4l0-21swapper/120:25:301
134491410,5ptp4l0-21swapper/021:45:220
134491410,5ptp4l0-21swapper/019:35:130
134491410,5ptp4l0-21swapper/019:10:010
134491410,4ptp4l5093-21apt-get22:20:123
134491410,4ptp4l28692-21hddtemp_smartct20:50:180
134491410,4ptp4l25-21ksoftirqd/120:45:231
134491410,4ptp4l24625-21memory20:40:220
134491410,4ptp4l23337-21users22:55:270
134491410,4ptp4l21836-21apt-get00:05:133
134491410,4ptp4l18939-21apt-get22:50:031
134491410,4ptp4l17812-21ntp_states21:35:220
134491410,4ptp4l16945-21iostat19:15:170
134491410,4ptp4l16420-21apt-get22:45:031
134491410,4ptp4l14666-21diskstats22:40:151
134491410,4ptp4l1400199cyclictest00:31:150
134491410,4ptp4l10751-21meminfo21:20:200
134491410,4ptp4l10748-21hddtemp_smartct23:40:160
134491410,4ptp4l0-21swapper/120:35:191
134491410,3ptp4l26641-21apt-get00:15:111
134491410,3ptp4l26112-21df_inode19:35:161
134491410,3ptp4l14405-21apt-get21:30:111
134491410,3ptp4l10321-21apt-get23:40:111
134491410,3ptp4l0-21swapper/119:54:381
14005994035,3cyclictest41-21ksoftirqd/321:50:003
134491400,8ptp4l0-21swapper/223:04:132
134491400,5ptp4l16470-21cat23:50:283
134491400,5ptp4l0-21swapper/320:00:253
134491400,5ptp4l0-21swapper/320:00:253
134491400,5ptp4l0-21swapper/220:05:122
134491400,5ptp4l0-21swapper/121:25:251
134491400,4ptp4l31370-21irqstats22:05:200
134491400,4ptp4l2359-21mailstats23:20:260
134491400,4ptp4l22237-21iostat_ios22:55:181
134491400,4ptp4l19587-21iostat21:40:180
134491400,4ptp4l12341-21diskstats22:35:141
134491400,4ptp4l0-21swapper/321:30:173
134491400,4ptp4l0-21swapper/321:25:133
134491400,4ptp4l0-21swapper/320:45:153
134491400,4ptp4l0-21swapper/221:15:042
134491400,4ptp4l0-21swapper/219:16:152
134491400,4ptp4l0-21swapper/219:14:492
134491400,4ptp4l0-21swapper/123:15:191
134491400,4ptp4l0-21swapper/122:15:221
134491400,4ptp4l0-21swapper/121:05:151
134491400,4ptp4l0-21swapper/120:40:141
134491400,4ptp4l0-21swapper/120:05:171
134491400,4ptp4l0-21swapper/119:45:221
134491400,4ptp4l0-21swapper/100:10:331
134491400,4ptp4l0-21swapper/100:00:191
134491400,4ptp4l0-21swapper/023:00:110
134491400,4ptp4l0-21swapper/022:04:450
134491400,4ptp4l0-21swapper/021:05:120
134491400,4ptp4l0-21swapper/020:34:480
134491400,4ptp4l0-21swapper/020:25:160
134491400,4ptp4l0-21swapper/019:53:330
134491400,4ptp4l0-21swapper/000:15:170
134491400,3ptp4l9738-21apt-get22:30:121
134491400,3ptp4l8576-21iostat_ios23:35:200
134491400,3ptp4l8576-21iostat_ios23:35:190
134491400,3ptp4l739-21df_inode21:00:160
134491400,3ptp4l6710-21users20:00:280
134491400,3ptp4l6710-21users20:00:280
134491400,3ptp4l31644-21ntp_states22:05:231
134491400,3ptp4l30525-21ls00:20:280
134491400,3ptp4l24199-21apt-get23:00:131
134491400,3ptp4l12244-21df22:35:130
134491390,5ptp4l8829-21cat22:25:251
134491390,5ptp4l18159-21grep20:25:282
134491390,5ptp4l13789-21sshd21:25:310
134491390,5ptp4l0-21swapper/322:30:243
134491390,5ptp4l0-21swapper/122:10:131
134491390,4ptp4l6463-21systemctl22:20:250
134491390,4ptp4l25042-21cat20:40:272
134491390,4ptp4l19483-21iostat19:20:170
134491390,4ptp4l18890-21users23:55:301
134491390,4ptp4l14872-21awk22:40:173
134491390,4ptp4l0-21swapper/323:55:213
134491390,4ptp4l0-21swapper/323:40:123
134491390,4ptp4l0-21swapper/323:30:233
134491390,4ptp4l0-21swapper/323:05:243
134491390,4ptp4l0-21swapper/323:05:243
134491390,4ptp4l0-21swapper/323:00:243
134491390,4ptp4l0-21swapper/322:15:113
134491390,4ptp4l0-21swapper/321:35:233
134491390,4ptp4l0-21swapper/321:15:533
134491390,4ptp4l0-21swapper/320:40:273
134491390,4ptp4l0-21swapper/320:30:223
134491390,4ptp4l0-21swapper/320:20:223
134491390,4ptp4l0-21swapper/223:41:072
134491390,4ptp4l0-21swapper/223:38:382
134491390,4ptp4l0-21swapper/223:38:372
134491390,4ptp4l0-21swapper/223:25:562
134491390,4ptp4l0-21swapper/223:20:202
134491390,4ptp4l0-21swapper/222:45:252
134491390,4ptp4l0-21swapper/221:34:492
134491390,4ptp4l0-21swapper/220:56:502
134491390,4ptp4l0-21swapper/220:16:552
134491390,4ptp4l0-21swapper/219:56:282
134491390,4ptp4l0-21swapper/219:50:162
134491390,4ptp4l0-21swapper/219:35:162
134491390,4ptp4l0-21swapper/219:34:032
134491390,4ptp4l0-21swapper/219:34:032
134491390,4ptp4l0-21swapper/200:26:502
134491390,4ptp4l0-21swapper/123:35:161
134491390,4ptp4l0-21swapper/123:35:161
134491390,4ptp4l0-21swapper/123:20:161
134491390,4ptp4l0-21swapper/121:45:141
134491390,4ptp4l0-21swapper/121:35:261
134491390,4ptp4l0-21swapper/120:30:261
134491390,4ptp4l0-21swapper/119:30:221
134491390,4ptp4l0-21swapper/119:30:221
134491390,4ptp4l0-21swapper/119:20:221
134491390,4ptp4l0-21swapper/119:15:181
134491390,4ptp4l0-21swapper/100:30:291
134491390,4ptp4l0-21swapper/100:20:191
134491390,4ptp4l0-21swapper/023:34:130
134491390,4ptp4l0-21swapper/023:10:110
134491390,4ptp4l0-21swapper/022:45:030
134491390,4ptp4l0-21swapper/022:10:130
134491390,4ptp4l0-21swapper/021:57:370
134491390,4ptp4l0-21swapper/020:35:110
134491390,4ptp4l0-21swapper/020:15:170
134491390,4ptp4l0-21swapper/020:10:150
134491390,4ptp4l0-21swapper/019:57:400
134491390,4ptp4l0-21swapper/019:40:270
134491390,3ptp4l7911-21hddtemp_smartct21:15:171
134491390,3ptp4l3153-21/usr/sbin/munin21:05:163
134491390,3ptp4l30726-21diskstats19:45:140
134491390,3ptp4l28964-21irqstats19:40:182
134491390,3ptp4l14661-21/usr/sbin/munin22:40:150
134491390,3ptp4l13103-21phc2sys-jitter20:15:241
134491390,3ptp4l1301-21snmpd23:36:473
134491390,3ptp4l1301-21snmpd23:36:473
134491390,3ptp4l0-21swapper/321:50:193
134491390,3ptp4l0-21swapper/022:15:170
14005993833,3cyclictest41-21ksoftirqd/300:04:313
14005993832,4cyclictest41-21ksoftirqd/321:24:593
1400599382,5cyclictest11931-21apt-get20:15:133
134491380,5ptp4l23514-21chrt19:30:143
134491380,5ptp4l23514-21chrt19:30:143
134491380,4ptp4l13560-21ls23:45:201
134491380,4ptp4l0-21swapper/322:10:103
134491380,4ptp4l0-21swapper/322:04:093
134491380,4ptp4l0-21swapper/321:40:073
134491380,4ptp4l0-21swapper/320:10:143
134491380,4ptp4l0-21swapper/319:50:273
134491380,4ptp4l0-21swapper/319:35:173
134491380,4ptp4l0-21swapper/319:10:143
134491380,4ptp4l0-21swapper/300:10:193
134491380,4ptp4l0-21swapper/223:52:442
134491380,4ptp4l0-21swapper/223:16:212
134491380,4ptp4l0-21swapper/222:40:242
134491380,4ptp4l0-21swapper/221:54:162
134491380,4ptp4l0-21swapper/121:55:261
134491380,4ptp4l0-21swapper/121:05:001
134491380,4ptp4l0-21swapper/120:52:151
134491380,4ptp4l0-21swapper/100:05:511
134491380,4ptp4l0-21swapper/023:55:110
134491380,4ptp4l0-21swapper/023:45:230
134491380,4ptp4l0-21swapper/023:16:170
134491380,4ptp4l0-21swapper/021:50:300
134491380,4ptp4l0-21swapper/020:24:110
134491380,3ptp4l20037-21ls21:40:201
134491380,3ptp4l0-21swapper/322:50:303
134491380,3ptp4l0-21swapper/321:00:273
134491380,3ptp4l0-21swapper/320:05:253
134491380,3ptp4l0-21swapper/123:33:371
134491380,3ptp4l0-21swapper/120:11:481
134491380,3ptp4l0-21swapper/021:19:580
14005993731,4cyclictest41-21ksoftirqd/323:10:343
14005993731,4cyclictest41-21ksoftirqd/322:25:113
14005993731,4cyclictest41-21ksoftirqd/319:19:053
1400599370,2cyclictest984-21apt-get23:20:123
134491370,4ptp4l0-21swapper/320:50:153
134491370,4ptp4l0-21swapper/020:05:140
134491370,3ptp4l0-21swapper/322:08:153
134491370,3ptp4l0-21swapper/321:10:313
134491370,3ptp4l0-21swapper/319:28:043
134491370,3ptp4l0-21swapper/222:32:292
14005993630,4cyclictest41-21ksoftirqd/320:59:593
134491360,5ptp4l0-21swapper/322:55:143
134491360,4ptp4l0-21swapper/320:25:503
134491360,3ptp4l0-21swapper/323:47:493
134491360,3ptp4l0-21swapper/322:45:213
134491360,3ptp4l0-21swapper/319:40:173
134491360,3ptp4l0-21swapper/319:21:523
134491360,3ptp4l0-21swapper/300:30:123
14005993529,4cyclictest41-21ksoftirqd/323:25:453
14005993529,4cyclictest41-21ksoftirqd/319:59:383
134491350,3ptp4l0-21swapper/300:16:253
14005993327,4cyclictest41-21ksoftirqd/319:45:463
137891245,11phc2sys0-21swapper/319:05:113
115962123,5sleep20-21swapper/219:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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