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2026-09-11 - 12:02
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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 Fri Sep 11, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1505321720,3sleep0346499cyclictest00:10:280
217921540,3sleep20-21swapper/221:25:172
134491620,4ptp4l0-21swapper/023:45:160
134491620,4ptp4l0-21swapper/023:45:160
134491610,3ptp4l25326-21/usr/sbin/munin22:15:140
134491600,4ptp4l32128-21df22:30:131
134491600,4ptp4l32093-21apt-get23:40:122
3467995926,3cyclictest41-21ksoftirqd/322:18:203
134491590,26ptp4l41-21ksoftirqd/300:20:243
3467995831,4cyclictest41-21ksoftirqd/323:34:103
142762580,3sleep014278-21needreboot21:50:230
3467995716,9cyclictest41-21ksoftirqd/320:00:163
134491570,3ptp4l0-21swapper/322:10:183
134491570,3ptp4l0-21swapper/300:16:133
134491570,19ptp4l10250-21cat19:25:002
145122560,4sleep00-21swapper/020:40:250
134491560,4ptp4l0-21swapper/321:12:133
134491560,3ptp4l0-21swapper/322:33:593
3467995523,3cyclictest41-21ksoftirqd/321:50:003
3467995519,8cyclictest41-21ksoftirqd/300:36:123
134491550,4ptp4l0-21swapper/222:54:442
3467995419,9cyclictest41-21ksoftirqd/320:42:573
3467995418,3cyclictest41-21ksoftirqd/300:13:383
134491540,4ptp4l0-21swapper/323:25:563
134491540,4ptp4l0-21swapper/322:05:223
3467995320,5cyclictest41-21ksoftirqd/322:25:473
3467995317,7cyclictest41-21ksoftirqd/320:56:373
134491530,5ptp4l346599cyclictest19:39:041
134491530,5ptp4l0-21swapper/300:05:113
134491530,5ptp4l0-21swapper/200:20:242
134491530,4ptp4l0-21swapper/222:47:242
134491530,4ptp4l0-21swapper/222:47:242
134491530,3ptp4l0-21swapper/023:25:290
3467995220,4cyclictest41-21ksoftirqd/320:22:393
3467995218,8cyclictest41-21ksoftirqd/319:27:143
3467995216,4cyclictest41-21ksoftirqd/323:39:563
134491520,4ptp4l22044-21latency_hist19:50:003
134491520,4ptp4l0-21swapper/221:56:572
134491520,12ptp4l0-21swapper/122:02:581
3467995119,4cyclictest41-21ksoftirqd/319:10:153
3467995118,4cyclictest41-21ksoftirqd/321:24:053
134491510,4ptp4l346499cyclictest00:17:170
134491510,4ptp4l0-21swapper/319:34:333
134491510,4ptp4l0-21swapper/223:35:072
134491510,4ptp4l0-21swapper/023:31:230
134491510,4ptp4l0-21swapper/021:59:230
134491510,3ptp4l0-21swapper/322:20:133
134491510,3ptp4l0-21swapper/321:26:043
134491510,3ptp4l0-21swapper/123:15:141
134491510,3ptp4l0-21swapper/119:18:521
3467995022,3cyclictest41-21ksoftirqd/323:21:283
3467995020,6cyclictest41-21ksoftirqd/321:31:323
3467995020,4cyclictest41-21ksoftirqd/323:03:143
3467995019,4cyclictest41-21ksoftirqd/321:55:003
3467995018,7cyclictest41-21ksoftirqd/319:40:213
3467995017,4cyclictest41-21ksoftirqd/320:38:333
3467995017,4cyclictest41-21ksoftirqd/320:10:243
3467995016,3cyclictest41-21ksoftirqd/322:39:153
134491500,4ptp4l0-21swapper/022:00:310
134491500,4ptp4l0-21swapper/019:11:480
134491500,3ptp4l0-21swapper/222:22:012
134491500,3ptp4l0-21swapper/119:22:431
134491500,3ptp4l0-21swapper/019:22:140
346799493,2cyclictest0-21swapper/319:56:423
3467994920,7cyclictest41-21ksoftirqd/323:15:273
3467994915,7cyclictest41-21ksoftirqd/320:20:013
134491490,5ptp4l0-21swapper/019:08:120
134491490,4ptp4l0-21swapper/322:41:403
134491490,4ptp4l0-21swapper/119:11:501
134491490,3ptp4l0-21swapper/222:34:032
134491490,3ptp4l0-21swapper/221:36:302
346799482,4cyclictest0-21swapper/323:47:263
346799482,4cyclictest0-21swapper/323:47:263
346799482,2cyclictest0-21swapper/321:17:563
3467994817,6cyclictest41-21ksoftirqd/320:25:213
3467994817,3cyclictest41-21ksoftirqd/319:18:083
3467994816,8cyclictest41-21ksoftirqd/321:55:163
134491480,4ptp4l0-21swapper/323:59:173
134491480,4ptp4l0-21swapper/219:40:222
134491480,4ptp4l0-21swapper/200:39:512
134491480,4ptp4l0-21swapper/023:12:030
134491480,4ptp4l0-21swapper/022:36:410
134491480,3ptp4l0-21swapper/022:40:220
3467994718,7cyclictest41-21ksoftirqd/321:37:343
3467994716,3cyclictest41-21ksoftirqd/320:33:063
134491470,4ptp4l0-21swapper/222:37:342
134491470,4ptp4l0-21swapper/200:34:592
134491470,4ptp4l0-21swapper/200:12:442
134491470,4ptp4l0-21swapper/123:49:511
134491470,4ptp4l0-21swapper/123:49:511
134491470,4ptp4l0-21swapper/019:45:110
134491470,3ptp4l0-21swapper/322:52:153
346799468,8cyclictest41-21ksoftirqd/322:59:123
346799468,7cyclictest41-21ksoftirqd/321:00:143
346799463,3cyclictest0-21swapper/323:09:363
3467994616,4cyclictest41-21ksoftirqd/321:08:043
3467994614,7cyclictest41-21ksoftirqd/320:53:233
134491460,4ptp4l0-21swapper/300:25:133
134491460,4ptp4l0-21swapper/021:04:420
134491460,3ptp4l0-21swapper/223:22:112
3467994523,4cyclictest41-21ksoftirqd/319:53:083
346799450,2cyclictest121rcu_preempt23:11:593
3464994540,3cyclictest9-21ksoftirqd/021:00:000
134491450,4ptp4l0-21swapper/323:44:223
134491450,3ptp4l0-21swapper/223:15:522
134491450,3ptp4l0-21swapper/223:04:412
134491450,11ptp4l0-21swapper/019:39:090
346799446,8cyclictest41-21ksoftirqd/300:00:233
3467994439,3cyclictest41-21ksoftirqd/319:40:003
3467994410,3cyclictest41-21ksoftirqd/322:05:003
134491440,9ptp4l9-21ksoftirqd/021:29:290
134491440,7ptp4l0-21swapper/319:05:343
134491440,4ptp4l20685-21apt-get00:25:121
134491440,4ptp4l0-21swapper/120:43:301
134491440,3ptp4l0-21swapper/223:54:592
134491440,3ptp4l0-21swapper/221:30:252
3465994338,3cyclictest25-21ksoftirqd/119:59:591
134491430,9ptp4l0-21swapper/023:18:270
134491430,9ptp4l0-21swapper/019:58:260
134491430,5ptp4l31446-21users23:35:280
134491430,4ptp4l22504-21apt-get21:00:111
134491430,4ptp4l15711-21apt-get23:05:132
134491430,4ptp4l15387-21apt-get20:45:112
134491430,4ptp4l11096-21apt-get22:55:141
134491430,15ptp4l6654-21apt-get23:55:141
46198420,5rtkit-daemon2875791kworker/2:120:32:282
346799428,7cyclictest41-21ksoftirqd/323:51:153
3467994238,2cyclictest41-21ksoftirqd/322:50:013
3467994238,2cyclictest41-21ksoftirqd/322:50:013
3467994229,3cyclictest41-21ksoftirqd/320:05:283
3466994236,3cyclictest33-21ksoftirqd/221:40:202
3465994237,3cyclictest25-21ksoftirqd/120:55:011
134491420,5ptp4l17019-21memory00:15:201
134491420,5ptp4l11828-21ls19:25:242
134491420,5ptp4l0-21swapper/100:20:211
134491420,5ptp4l0-21swapper/022:55:180
134491420,5ptp4l0-21swapper/022:20:200
134491420,5ptp4l0-21swapper/019:30:120
134491420,5ptp4l0-21swapper/019:25:180
134491420,4ptp4l400-21ls22:30:180
134491420,4ptp4l22982-21apt-get00:30:111
134491420,4ptp4l19337-21meminfo00:20:210
134491420,4ptp4l16119-21ntp_states19:35:232
134491420,4ptp4l0-21swapper/121:55:111
134491420,4ptp4l0-21swapper/121:26:281
3467994136,3cyclictest41-21ksoftirqd/321:44:593
3467994135,3cyclictest41-21ksoftirqd/320:50:003
3467994112,8cyclictest41-21ksoftirqd/319:20:233
134691410,10getstats0-21swapper/123:51:321
134491410,9ptp4l0-21swapper/200:15:122
134491410,5ptp4l2269-21phc2sys19:05:342
134491410,5ptp4l0-21swapper/020:45:250
134491410,4ptp4l32661-21iostat_ios23:40:180
134491410,4ptp4l30081-21df_inode23:35:151
134491410,4ptp4l27786-21iostat_ios23:30:211
134491410,4ptp4l18005-21apt-get23:10:122
134491410,4ptp4l17681-21apt-get20:50:122
134491410,4ptp4l12060-21ntp_states21:45:230
134491410,4ptp4l11615-21irqstats20:35:182
134491410,4ptp4l0-21swapper/223:45:272
134491410,4ptp4l0-21swapper/223:45:262
134491410,4ptp4l0-21swapper/219:45:202
134491410,4ptp4l0-21swapper/123:29:081
134491410,4ptp4l0-21swapper/100:00:221
134491410,4ptp4l0-21swapper/023:00:120
134491410,4ptp4l0-21swapper/021:32:150
134491410,4ptp4l0-21swapper/000:05:170
134491410,3ptp4l22982-21apt-get00:30:120
134491410,3ptp4l14870-21sshd20:41:382
134491410,3ptp4l13411-21apt-get23:00:141
3467994011,3cyclictest41-21ksoftirqd/300:34:003
3466994034,4cyclictest33-21ksoftirqd/220:00:002
3464994034,3cyclictest9-21ksoftirqd/000:00:000
3464994026,6cyclictest9-21ksoftirqd/023:23:490
134491400,5ptp4l27266-21awk20:00:151
134491400,5ptp4l22746-21ls00:30:010
134491400,5ptp4l0-21swapper/100:38:001
134491400,5ptp4l0-21swapper/023:50:240
134491400,5ptp4l0-21swapper/023:05:010
134491400,4ptp4l4991-21ntp_states20:20:210
134491400,4ptp4l30420-21ntp_states20:05:240
134491400,4ptp4l22118-21apt-get19:50:132
134491400,4ptp4l18630-21meminfo20:50:200
134491400,4ptp4l12214-21meminfo00:05:212
134491400,4ptp4l0-21swapper/222:10:202
134491400,4ptp4l0-21swapper/221:10:212
134491400,4ptp4l0-21swapper/200:00:132
134491400,4ptp4l0-21swapper/123:11:351
134491400,4ptp4l0-21swapper/121:45:101
134491400,4ptp4l0-21swapper/121:05:061
134491400,4ptp4l0-21swapper/019:52:270
134491400,4ptp4l0-21swapper/019:44:370
134491400,4ptp4l0-21swapper/019:18:160
134491400,4ptp4l0-21swapper/000:38:420
134491400,3ptp4l6093-21df_inode19:15:132
134491400,3ptp4l0-21swapper/222:17:562
134491400,3ptp4l0-21swapper/021:11:070
134491400,2ptp4l29625-21apt-get22:25:122
3465993934,3cyclictest25-21ksoftirqd/121:39:591
134491390,5ptp4l0-21swapper/220:58:202
134491390,5ptp4l0-21swapper/119:32:131
134491390,5ptp4l0-21swapper/119:07:581
134491390,5ptp4l0-21swapper/000:00:180
134491390,4ptp4l7126-21meminfo20:25:192
134491390,4ptp4l27900-21iostat_ios22:20:181
134491390,4ptp4l14581-21python21:50:272
134491390,4ptp4l0-21swapper/223:56:272
134491390,4ptp4l0-21swapper/223:25:242
134491390,4ptp4l0-21swapper/222:06:042
134491390,4ptp4l0-21swapper/221:15:192
134491390,4ptp4l0-21swapper/220:10:192
134491390,4ptp4l0-21swapper/123:05:161
134491390,4ptp4l0-21swapper/122:46:011
134491390,4ptp4l0-21swapper/122:46:011
134491390,4ptp4l0-21swapper/122:36:341
134491390,4ptp4l0-21swapper/122:16:021
134491390,4ptp4l0-21swapper/122:10:001
134491390,4ptp4l0-21swapper/122:05:121
134491390,4ptp4l0-21swapper/121:19:171
134491390,4ptp4l0-21swapper/120:55:181
134491390,4ptp4l0-21swapper/120:20:191
134491390,4ptp4l0-21swapper/120:15:201
134491390,4ptp4l0-21swapper/119:45:241
134491390,4ptp4l0-21swapper/119:25:271
134491390,4ptp4l0-21swapper/100:10:271
134491390,4ptp4l0-21swapper/022:46:380
134491390,4ptp4l0-21swapper/022:46:380
134491390,4ptp4l0-21swapper/022:11:280
134491390,4ptp4l0-21swapper/022:06:030
134491390,4ptp4l0-21swapper/021:40:140
134491390,4ptp4l0-21swapper/020:30:170
134491390,4ptp4l0-21swapper/020:25:080
134491390,4ptp4l0-21swapper/020:13:210
134491390,4ptp4l0-21swapper/020:00:510
134491390,3ptp4l32712-21ls21:20:221
134491390,3ptp4l32081-21diskstats21:20:172
134491390,3ptp4l12047-21meminfo22:55:222
134491390,3ptp4l0-21swapper/021:05:020
134491390,3ptp4l0-21swapper/020:37:420
134491390,2ptp4l7367-21strings21:35:220
134491380,5ptp4l0-21swapper/119:40:021
134491380,4ptp4l9-21ksoftirqd/021:20:250
134491380,4ptp4l0-21swapper/223:30:192
134491380,4ptp4l0-21swapper/221:45:212
134491380,4ptp4l0-21swapper/220:00:062
134491380,4ptp4l0-21swapper/219:30:142
134491380,4ptp4l0-21swapper/219:10:162
134491380,4ptp4l0-21swapper/123:40:141
134491380,4ptp4l0-21swapper/123:22:001
134491380,4ptp4l0-21swapper/122:54:511
134491380,4ptp4l0-21swapper/121:53:471
134491380,4ptp4l0-21swapper/120:45:211
134491380,4ptp4l0-21swapper/120:34:181
134491380,4ptp4l0-21swapper/120:27:261
134491380,4ptp4l0-21swapper/100:08:511
134491380,4ptp4l0-21swapper/022:25:130
134491380,4ptp4l0-21swapper/021:15:010
134491380,4ptp4l0-21swapper/020:15:230
134491380,3ptp4l0-21swapper/222:02:562
134491380,3ptp4l0-21swapper/221:05:262
134491380,3ptp4l0-21swapper/200:25:272
134491380,3ptp4l0-21swapper/122:40:021
134491380,3ptp4l0-21swapper/121:43:161
134491380,3ptp4l0-21swapper/022:51:160
134491370,4ptp4l0-21swapper/222:40:212
134491370,4ptp4l0-21swapper/220:20:152
134491370,4ptp4l0-21swapper/121:10:141
134491370,4ptp4l0-21swapper/120:37:421
134491370,4ptp4l0-21swapper/120:06:521
134491370,3ptp4l23622-21ntp_states21:00:212
134491370,3ptp4l1826-21grep20:15:162
134491370,3ptp4l0-21swapper/220:05:262
134491370,3ptp4l0-21swapper/121:32:591
134491370,3ptp4l0-21swapper/120:10:061
134491360,3ptp4l0-21swapper/122:25:011
134491350,4ptp4l0-21swapper/119:52:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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