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2026-01-07 - 03:47
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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 Jan 07, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11255996711,54cyclictest10249-21kworker/1:121:05:491
134491660,24ptp4l18619-21grep19:25:162
11254996232,6cyclictest9-21ksoftirqd/022:41:200
11255996114,45cyclictest23545-21kworker/1:100:15:481
134491600,5ptp4l0-21swapper/121:30:171
134491600,4ptp4l0-21swapper/121:15:201
134491600,4ptp4l0-21swapper/119:05:201
296222590,3sleep129628-21latency23:15:191
134491590,4ptp4l0-21swapper/200:25:042
134491580,5ptp4l0-21swapper/323:27:143
134491570,4ptp4l0-21swapper/221:25:052
134491570,4ptp4l0-21swapper/219:42:082
134491560,4ptp4l0-21swapper/323:50:143
134491560,4ptp4l0-21swapper/219:57:492
134491560,4ptp4l0-21swapper/022:01:580
134491560,3ptp4l0-21swapper/122:24:501
134491550,4ptp4l0-21swapper/200:11:592
134491540,4ptp4l0-21swapper/223:51:282
134491540,4ptp4l0-21swapper/223:25:532
134491540,4ptp4l0-21swapper/221:37:002
134491540,4ptp4l0-21swapper/200:38:212
134491540,3ptp4l0-21swapper/223:40:462
212612530,6sleep30-21swapper/320:40:123
134491530,4ptp4l0-21swapper/300:30:253
134491530,4ptp4l0-21swapper/300:30:253
134491530,4ptp4l0-21swapper/300:00:193
134491530,4ptp4l0-21swapper/220:30:102
134491530,3ptp4l0-21swapper/000:35:070
1125499532,7cyclictest0-21swapper/022:50:210
134491520,4ptp4l0-21swapper/223:36:322
134491520,4ptp4l0-21swapper/221:52:082
134491520,4ptp4l0-21swapper/221:47:482
1125499527,13cyclictest0-21swapper/020:25:170
1125499527,13cyclictest0-21swapper/020:25:170
1125499524,6cyclictest0-21swapper/023:35:240
11254995243,7cyclictest0-21swapper/019:55:270
1125499520,5cyclictest29874-21sshd20:56:460
134491510,4ptp4l0-21swapper/219:08:202
1125499517,11cyclictest0-21swapper/023:30:220
80322500,4sleep00-21swapper/022:30:130
134491500,4ptp4l0-21swapper/220:09:162
134491500,4ptp4l0-21swapper/023:05:450
1125499505,11cyclictest0-21swapper/021:50:250
134491490,4ptp4l28766-21users00:20:291
134491490,4ptp4l0-21swapper/223:23:172
134491490,4ptp4l0-21swapper/223:07:402
1125499493,6cyclictest0-21swapper/021:55:270
1125499493,11cyclictest0-21swapper/023:50:100
1125499492,6cyclictest9-21ksoftirqd/019:50:260
134491480,3ptp4l0-21swapper/221:11:142
134491480,3ptp4l0-21swapper/220:45:322
134491480,3ptp4l0-21swapper/200:09:102
1125599488,38cyclictest10249-21kworker/1:121:01:291
1125499485,6cyclictest0-21swapper/022:20:130
1125499485,6cyclictest0-21swapper/020:40:150
1125499484,3cyclictest134491ptp4l23:19:590
1125499483,6cyclictest9-21ksoftirqd/000:05:150
1125499481,5cyclictest9-21ksoftirqd/022:35:230
134491470,6ptp4l0-21swapper/221:08:332
134491470,3ptp4l0-21swapper/122:00:271
134491470,3ptp4l0-21swapper/019:35:130
134491470,13ptp4l0-21swapper/021:05:220
1125499475,6cyclictest0-21swapper/019:22:180
1125499475,5cyclictest0-21swapper/023:03:340
1125499474,6cyclictest0-21swapper/019:10:280
1125499472,5cyclictest0-21swapper/019:30:280
1125499471,6cyclictest9-21ksoftirqd/021:35:230
1125499471,12cyclictest0-21swapper/020:19:380
134491460,4ptp4l0-21swapper/200:22:202
134491460,3ptp4l0-21swapper/321:16:263
134491460,2ptp4l121rcu_preempt20:40:262
1125499465,5cyclictest0-21swapper/023:45:100
1125499463,6cyclictest31284-21ls22:10:170
1125499462,6cyclictest9-21ksoftirqd/000:00:260
1125499462,6cyclictest0-21swapper/021:30:130
1125499461,5cyclictest101ktimersoftd/000:10:160
134491450,9ptp4l0-21swapper/200:02:162
134491450,4ptp4l0-21swapper/319:05:303
134491450,3ptp4l0-21swapper/022:18:150
1125499452,7cyclictest0-21swapper/020:20:170
1125499452,6cyclictest9-21ksoftirqd/022:05:270
1125499451,6cyclictest9-21ksoftirqd/023:29:590
1125499450,6cyclictest26966-21if_err_enp1s023:10:170
134491440,4ptp4l0-21swapper/300:35:403
134491440,11ptp4l41-21ksoftirqd/322:49:173
134491440,11ptp4l0-21swapper/220:03:352
11257994439,3cyclictest41-21ksoftirqd/320:00:003
1125499442,6cyclictest0-21swapper/020:35:160
134491430,9ptp4l0-21swapper/222:23:562
134491430,9ptp4l0-21swapper/222:15:042
134491430,9ptp4l0-21swapper/221:34:542
134491430,5ptp4l0-21swapper/019:05:060
134491430,4ptp4l0-21swapper/020:10:210
134491430,3ptp4l0-21swapper/320:50:203
134491430,3ptp4l0-21swapper/219:32:412
134491430,3ptp4l0-21swapper/121:57:371
134491430,3ptp4l0-21swapper/120:48:361
134491430,10ptp4l0-21swapper/219:15:282
1125599432,39cyclictest25-21ksoftirqd/100:33:091
1125599432,39cyclictest25-21ksoftirqd/100:33:091
1125499433,6cyclictest9-21ksoftirqd/021:45:000
1125499433,5cyclictest0-21swapper/021:45:150
1125499432,4cyclictest0-21swapper/022:55:170
1125499430,5cyclictest25795-21cpu20:50:120
134491420,9ptp4l0-21swapper/223:48:002
134491420,5ptp4l30558-21memory00:25:203
134491420,5ptp4l23274-21users21:50:271
134491420,4ptp4l7289-21apt-get21:20:131
134491420,4ptp4l15913-21iostat23:55:190
134491420,4ptp4l0-21swapper/122:40:131
134491420,3ptp4l26443-21apt-get23:10:112
134491420,3ptp4l19967-21apt-get00:05:131
134491420,10ptp4l0-21swapper/323:21:363
134491420,10ptp4l0-21swapper/222:02:282
134491420,10ptp4l0-21swapper/019:43:010
11257994237,3cyclictest41-21ksoftirqd/320:05:003
11255994212,29cyclictest0-21swapper/121:13:591
11254994239,2cyclictest111rcuc/020:00:140
1125499421,5cyclictest9-21ksoftirqd/022:25:190
134491410,9ptp4l0-21swapper/222:09:512
134491410,9ptp4l0-21swapper/221:02:102
134491410,9ptp4l0-21swapper/023:43:560
134491410,5ptp4l0-21swapper/323:15:263
134491410,5ptp4l0-21swapper/123:45:271
134491410,5ptp4l0-21swapper/022:45:200
134491410,4ptp4l28288-21df20:55:131
134491410,4ptp4l18395-21apt-get20:35:021
134491410,4ptp4l16866-21memory19:20:222
134491410,4ptp4l16549-21df20:30:140
134491410,4ptp4l0-21swapper/219:35:242
134491410,4ptp4l0-21swapper/021:20:160
134491410,4ptp4l0-21swapper/020:05:220
134491410,3ptp4l7050-21ls22:25:261
134491410,3ptp4l31765-21ls22:10:203
134491410,3ptp4l17221-21apt-get22:50:111
134491410,3ptp4l10284-21apt-get22:35:102
11257994136,3cyclictest41-21ksoftirqd/322:35:173
11257994136,3cyclictest41-21ksoftirqd/321:35:003
11257994135,3cyclictest41-21ksoftirqd/300:19:593
1125799411,38cyclictest12069-21fschecks_count20:20:163
11255994110,29cyclictest0-21swapper/100:11:391
134491400,5ptp4l23188-21/usr/sbin/munin23:00:271
134491400,5ptp4l11050-21sed20:15:281
134491400,5ptp4l0-21swapper/121:35:251
134491400,5ptp4l0-21swapper/021:15:140
134491400,4ptp4l31252-21hddtemp_smartct22:10:161
134491400,4ptp4l28294-21hddtemp_smartct19:45:161
134491400,4ptp4l24497-21ls20:45:210
134491400,4ptp4l12860-21ls19:10:272
134491400,4ptp4l11964-21users22:35:261
134491400,4ptp4l0-21swapper/323:35:273
134491400,4ptp4l0-21swapper/319:30:223
134491400,4ptp4l0-21swapper/300:11:053
134491400,4ptp4l0-21swapper/222:55:092
134491400,4ptp4l0-21swapper/119:55:251
134491400,4ptp4l0-21swapper/119:50:111
134491400,4ptp4l0-21swapper/000:30:160
134491400,4ptp4l0-21swapper/000:30:160
134491400,3ptp4l26511-21meminfo19:40:201
134491400,3ptp4l20638-21ntp_states22:55:241
134491400,3ptp4l16850-21ls23:55:293
11257994035,3cyclictest41-21ksoftirqd/320:50:003
11257994035,3cyclictest41-21ksoftirqd/319:20:003
1125599409,30cyclictest0-21swapper/120:40:391
11255994010,29cyclictest0-21swapper/122:05:591
11254994035,3cyclictest9-21ksoftirqd/021:29:590
1125499402,6cyclictest9-21ksoftirqd/019:45:150
134491390,5ptp4l0-21swapper/323:05:163
134491390,5ptp4l0-21swapper/122:45:111
134491390,5ptp4l0-21swapper/120:05:221
134491390,4ptp4l0-21swapper/323:45:133
134491390,4ptp4l0-21swapper/323:40:173
134491390,4ptp4l0-21swapper/323:30:123
134491390,4ptp4l0-21swapper/322:15:123
134491390,4ptp4l0-21swapper/321:20:343
134491390,4ptp4l0-21swapper/320:11:063
134491390,4ptp4l0-21swapper/320:05:243
134491390,4ptp4l0-21swapper/319:25:323
134491390,4ptp4l0-21swapper/319:12:113
134491390,4ptp4l0-21swapper/223:59:442
134491390,4ptp4l0-21swapper/223:15:202
134491390,4ptp4l0-21swapper/222:32:242
134491390,4ptp4l0-21swapper/222:29:472
134491390,4ptp4l0-21swapper/222:11:132
134491390,4ptp4l0-21swapper/221:23:392
134491390,4ptp4l0-21swapper/220:55:182
134491390,4ptp4l0-21swapper/220:54:102
134491390,4ptp4l0-21swapper/220:35:382
134491390,4ptp4l0-21swapper/220:15:222
134491390,4ptp4l0-21swapper/220:10:382
134491390,4ptp4l0-21swapper/200:32:032
134491390,4ptp4l0-21swapper/200:32:022
134491390,4ptp4l0-21swapper/123:41:211
134491390,4ptp4l0-21swapper/122:15:181
134491390,4ptp4l0-21swapper/121:40:151
134491390,4ptp4l0-21swapper/120:30:181
134491390,4ptp4l0-21swapper/120:20:281
134491390,4ptp4l0-21swapper/100:35:161
134491390,4ptp4l0-21swapper/021:12:110
134491390,4ptp4l0-21swapper/021:00:200
134491390,4ptp4l0-21swapper/019:18:260
134491390,4ptp4l0-21swapper/000:26:430
134491390,3ptp4l24769-21apt-get00:15:130
134491390,3ptp4l0-21swapper/223:34:022
134491390,2ptp4l15065-21ls20:25:241
134491390,2ptp4l15065-21ls20:25:241
134491390,2ptp4l14608-21ls19:15:211
134491390,2ptp4l0-21swapper/123:28:401
134491380,5ptp4l0-21swapper/300:20:133
134491380,5ptp4l0-21swapper/120:50:221
134491380,5ptp4l0-21swapper/120:10:121
134491380,4ptp4l13226-21tr23:50:121
134491380,4ptp4l0-21swapper/323:10:223
134491380,4ptp4l0-21swapper/323:02:223
134491380,4ptp4l0-21swapper/322:55:283
134491380,4ptp4l0-21swapper/322:25:253
134491380,4ptp4l0-21swapper/322:22:503
134491380,4ptp4l0-21swapper/321:51:533
134491380,4ptp4l0-21swapper/321:45:113
134491380,4ptp4l0-21swapper/321:25:253
134491380,4ptp4l0-21swapper/321:11:023
134491380,4ptp4l0-21swapper/321:06:203
134491380,4ptp4l0-21swapper/320:30:163
134491380,4ptp4l0-21swapper/320:15:263
134491380,4ptp4l0-21swapper/319:40:223
134491380,4ptp4l0-21swapper/319:22:343
134491380,4ptp4l0-21swapper/223:00:542
134491380,4ptp4l0-21swapper/222:51:312
134491380,4ptp4l0-21swapper/222:48:522
134491380,4ptp4l0-21swapper/221:55:442
134491380,4ptp4l0-21swapper/221:41:282
134491380,4ptp4l0-21swapper/221:16:132
134491380,4ptp4l0-21swapper/220:25:012
134491380,4ptp4l0-21swapper/220:25:012
134491380,4ptp4l0-21swapper/220:22:022
134491380,4ptp4l0-21swapper/123:58:481
134491380,4ptp4l0-21swapper/123:30:481
134491380,4ptp4l0-21swapper/123:20:001
134491380,4ptp4l0-21swapper/123:05:211
134491380,4ptp4l0-21swapper/122:30:141
134491380,4ptp4l0-21swapper/121:27:041
134491380,4ptp4l0-21swapper/120:00:121
134491380,4ptp4l0-21swapper/119:36:081
134491380,4ptp4l0-21swapper/119:30:171
134491380,4ptp4l0-21swapper/119:11:501
134491380,4ptp4l0-21swapper/100:26:441
134491380,4ptp4l0-21swapper/100:03:231
134491380,4ptp4l0-21swapper/000:21:330
134491380,3ptp4l19871-21iostat_ios21:45:161
134491380,3ptp4l19775-21python19:25:291
134491380,3ptp4l17679-21sshd19:21:281
134491380,3ptp4l0-21swapper/219:45:222
11257993833,3cyclictest41-21ksoftirqd/322:00:133
11257993833,3cyclictest41-21ksoftirqd/321:00:213
11257993833,3cyclictest41-21ksoftirqd/300:05:193
11255993832,4cyclictest25-21ksoftirqd/123:36:291
1125499380,5cyclictest9-21ksoftirqd/023:20:120
134491370,5ptp4l0-21swapper/019:25:170
134491370,4ptp4l0-21swapper/322:41:203
134491370,4ptp4l0-21swapper/320:27:483
134491370,4ptp4l0-21swapper/320:27:483
134491370,4ptp4l0-21swapper/319:53:313
134491370,4ptp4l0-21swapper/222:42:532
134491370,4ptp4l0-21swapper/200:15:232
134491370,3ptp4l29700-21phc2sys22:05:233
134491370,3ptp4l0-21swapper/322:50:553
134491370,3ptp4l0-21swapper/320:55:193
134491370,3ptp4l0-21swapper/123:10:181
134491360,5ptp4l0-21swapper/319:45:113
134491360,4ptp4l0-21swapper/322:33:063
134491360,4ptp4l0-21swapper/320:38:063
134491360,4ptp4l0-21swapper/219:51:432
134491360,3ptp4l0-21swapper/321:58:553
134491360,3ptp4l0-21swapper/319:39:303
134491350,4ptp4l0-21swapper/321:35:543
134491350,3ptp4l0-21swapper/321:42:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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