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2026-04-17 - 07:04
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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 Apr 17, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
786421720,2sleep2265699cyclictest19:20:172
134491740,5ptp4l0-21swapper/219:07:402
134491640,4ptp4l0-21swapper/221:30:132
134491640,10ptp4l241ktimersoftd/119:26:241
265599613,22cyclictest134491ptp4l19:20:191
134491600,3ptp4l0-21swapper/122:29:111
249182590,6sleep1265599cyclictest23:25:141
134491580,4ptp4l0-21swapper/323:41:393
134491570,4ptp4l0-21swapper/323:56:403
134491570,3ptp4l0-21swapper/200:05:072
134491560,4ptp4l0-21swapper/200:12:172
134491560,2ptp4l0-21swapper/019:45:190
265499555,8cyclictest24513-21df_abs22:15:150
134491550,5ptp4l0-21swapper/223:55:152
134491550,4ptp4l0-21swapper/323:27:123
134491550,4ptp4l0-21swapper/319:40:143
134491550,3ptp4l0-21swapper/300:09:373
134491550,3ptp4l0-21swapper/123:07:051
134491550,3ptp4l0-21swapper/120:36:421
134491550,3ptp4l0-21swapper/000:37:560
134491550,15ptp4l32204-21apt-get19:05:013
265499545,7cyclictest0-21swapper/020:50:250
265499544,7cyclictest9-21ksoftirqd/000:00:250
2654995428,5cyclictest9-21ksoftirqd/021:37:380
134491540,4ptp4l0-21swapper/321:34:093
134491540,3ptp4l0-21swapper/200:37:352
265499533,11cyclictest9-21ksoftirqd/020:30:250
265499532,5cyclictest9-21ksoftirqd/021:15:130
134491530,4ptp4l0-21swapper/322:47:053
134491530,4ptp4l0-21swapper/020:55:070
134491530,3ptp4l0-21swapper/200:20:092
134491530,2ptp4l0-21swapper/223:15:282
265499525,7cyclictest9-21ksoftirqd/000:10:270
2654995249,2cyclictest111rcuc/022:35:200
265499520,7cyclictest9-21ksoftirqd/000:00:000
134491520,4ptp4l0-21swapper/323:36:283
134491520,4ptp4l0-21swapper/322:44:443
265499514,9cyclictest0-21swapper/021:00:000
2654995127,4cyclictest9-21ksoftirqd/023:20:400
265499512,6cyclictest9-21ksoftirqd/021:53:240
265499512,6cyclictest9-21ksoftirqd/021:40:260
265499512,5cyclictest9-21ksoftirqd/022:55:020
265499512,5cyclictest7093-21awk19:20:010
265499512,5cyclictest0-21swapper/020:40:150
265499510,6cyclictest9-21ksoftirqd/000:15:260
134491510,9ptp4l0-21swapper/219:31:342
134491510,4ptp4l0-21swapper/319:34:443
134491510,4ptp4l0-21swapper/121:15:171
134491510,4ptp4l0-21swapper/023:48:240
265499507,3cyclictest121rcu_preempt20:45:220
265499503,6cyclictest9-21ksoftirqd/021:30:130
265499503,6cyclictest27770-21kernelversion23:30:170
265499502,7cyclictest0-21swapper/023:50:160
265499502,7cyclictest0-21swapper/023:50:160
2654995026,4cyclictest9-21ksoftirqd/021:05:490
134491500,4ptp4l0-21swapper/121:41:011
134491500,4ptp4l0-21swapper/023:25:530
134491500,3ptp4l0-21swapper/221:57:002
265499495,8cyclictest10789-21irqrtprio20:35:180
265499494,9cyclictest9-21ksoftirqd/000:30:180
265499494,8cyclictest9823-21df_abs19:25:120
265499493,6cyclictest9-21ksoftirqd/019:40:230
265499492,8cyclictest9-21ksoftirqd/021:25:230
265499492,5cyclictest9-21ksoftirqd/019:50:170
265499490,6cyclictest9-21ksoftirqd/021:45:180
265499490,6cyclictest9-21ksoftirqd/000:25:260
265499490,5cyclictest9-21ksoftirqd/020:10:160
134491490,4ptp4l0-21swapper/323:51:103
134491490,4ptp4l0-21swapper/323:51:093
134491490,4ptp4l0-21swapper/322:09:093
134491490,4ptp4l0-21swapper/321:01:493
265599480,2cyclictest77532sleep121:39:481
265499484,3cyclictest3737-21cat20:20:190
265499483,8cyclictest9-21ksoftirqd/023:10:150
265499483,6cyclictest9-21ksoftirqd/023:35:160
265499481,6cyclictest9-21ksoftirqd/021:10:240
265499480,5cyclictest9-21ksoftirqd/021:25:000
134491480,4ptp4l0-21swapper/221:41:532
134491480,15ptp4l33-21ksoftirqd/221:01:212
134491480,13ptp4l33-21ksoftirqd/220:27:122
265499475,7cyclictest9-21ksoftirqd/022:00:190
265499474,9cyclictest9-21ksoftirqd/019:20:250
265499473,6cyclictest9-21ksoftirqd/022:10:270
265499473,6cyclictest9-21ksoftirqd/022:10:270
265499471,6cyclictest0-21swapper/023:05:140
265499470,6cyclictest9-21ksoftirqd/022:45:230
134491470,4ptp4l0-21swapper/222:54:522
134491470,4ptp4l0-21swapper/020:15:080
134491470,3ptp4l0-21swapper/223:44:332
134491470,3ptp4l0-21swapper/022:44:090
134491470,2ptp4l0-21swapper/322:02:033
265499465,9cyclictest9-21ksoftirqd/022:50:190
265499465,9cyclictest9-21ksoftirqd/020:00:120
265499464,9cyclictest9-21ksoftirqd/022:20:290
265499461,7cyclictest9-21ksoftirqd/019:30:000
134491460,8ptp4l521-21df_inode19:05:141
134491460,7ptp4l0-21swapper/019:05:180
134491460,4ptp4l0-21swapper/222:34:212
134491460,4ptp4l0-21swapper/123:38:121
134491460,4ptp4l0-21swapper/120:09:501
134491460,3ptp4l0-21swapper/320:13:503
134491460,3ptp4l0-21swapper/121:51:001
134491460,12ptp4l33-21ksoftirqd/222:24:202
134491460,11ptp4l4778-21latency_hist19:15:012
2656994529,13cyclictest5826-21cron23:55:002
2656994529,13cyclictest5826-21cron23:55:002
265499454,9cyclictest9-21ksoftirqd/020:05:220
134491450,6ptp4l0-21swapper/000:05:120
134491450,5ptp4l24901-21apt-get00:35:123
134491450,4ptp4l2852-21apt-get20:20:121
134491450,4ptp4l0-21swapper/323:20:293
134491450,4ptp4l0-21swapper/322:16:373
134491450,4ptp4l0-21swapper/223:10:362
134491450,4ptp4l0-21swapper/223:09:082
134491450,4ptp4l0-21swapper/200:25:152
134491450,4ptp4l0-21swapper/122:09:111
134491450,3ptp4l0-21swapper/300:22:023
265499443,6cyclictest9-21ksoftirqd/019:55:260
265499442,7cyclictest0-21swapper/023:40:150
265499441,6cyclictest0-21swapper/020:25:250
265499441,5cyclictest9-21ksoftirqd/000:20:250
265499440,6cyclictest9-21ksoftirqd/022:05:170
134491440,9ptp4l0-21swapper/223:20:322
134491440,5ptp4l28231-21users21:10:272
134491440,4ptp4l0-21swapper/220:17:482
134491440,4ptp4l0-21swapper/200:34:592
134491440,4ptp4l0-21swapper/122:33:491
134491440,3ptp4l14974-21apt-get21:55:121
134491440,3ptp4l0-21swapper/123:23:021
2657994337,4cyclictest41-21ksoftirqd/322:00:003
265499435,8cyclictest9-21ksoftirqd/022:00:000
134491430,9ptp4l0-21swapper/219:40:412
134491430,9ptp4l0-21swapper/023:17:380
134491430,8ptp4l0-21swapper/222:14:242
134491430,8ptp4l0-21swapper/222:14:242
134491430,6ptp4l1454-21/usr/sbin/munin22:35:133
134491430,5ptp4l4984-21apt-get19:15:111
134491430,5ptp4l2024-21meminfo21:25:173
134491430,5ptp4l0-21swapper/222:45:212
134491430,5ptp4l0-21swapper/220:50:042
134491430,5ptp4l0-21swapper/123:45:221
134491430,4ptp4l0-21swapper/300:15:263
134491430,3ptp4l0-21swapper/121:21:381
134491430,3ptp4l0-21swapper/019:11:550
2655994234,5cyclictest26311-21cron21:09:591
134491420,9ptp4l0-21swapper/219:26:292
134491420,8ptp4l0-21swapper/221:50:122
134491420,8ptp4l0-21swapper/220:40:032
134491420,8ptp4l0-21swapper/220:23:212
134491420,8ptp4l0-21swapper/220:02:372
134491420,8ptp4l0-21swapper/219:16:042
134491420,6ptp4l16598-21ntp_states00:15:231
134491420,5ptp4l11191-21/usr/sbin/munin00:05:141
134491420,5ptp4l0-21swapper/320:25:113
134491420,5ptp4l0-21swapper/300:00:183
134491420,5ptp4l0-21swapper/222:05:242
134491420,5ptp4l0-21swapper/220:30:132
134491420,4ptp4l5929-21apt-get22:45:121
134491420,4ptp4l231rcuc/122:38:161
134491420,4ptp4l2318-21gnome-shell20:15:591
134491420,4ptp4l22518-21ps22:10:193
134491420,4ptp4l22518-21ps22:10:193
134491420,4ptp4l20297-21df_inode23:15:143
134491420,4ptp4l19435-21apt-get20:55:111
134491420,4ptp4l17342-21apt-get22:00:122
134491420,4ptp4l16077-21users19:35:281
134491420,4ptp4l0-21swapper/321:17:533
134491420,4ptp4l0-21swapper/222:40:152
134491420,3ptp4l26910-21apt-get23:30:101
134491420,10ptp4l25-21ksoftirqd/119:56:121
2657994136,3cyclictest8760-21grep20:30:243
265499413,8cyclictest9-21ksoftirqd/019:35:250
134491410,9ptp4l0-21swapper/222:57:512
134491410,9ptp4l0-21swapper/219:39:502
134491410,5ptp4l771-21apt-get22:35:042
134491410,5ptp4l0-21swapper/221:09:212
134491410,5ptp4l0-21swapper/123:50:321
134491410,5ptp4l0-21swapper/123:50:311
134491410,5ptp4l0-21swapper/119:30:121
134491410,4ptp4l265599cyclictest20:30:151
134491410,4ptp4l17535-21apt-get00:20:011
134491410,4ptp4l0-21swapper/323:00:153
134491410,4ptp4l0-21swapper/320:00:183
134491410,4ptp4l0-21swapper/221:35:172
134491410,4ptp4l0-21swapper/122:04:271
134491410,4ptp4l0-21swapper/119:45:271
134491410,4ptp4l0-21swapper/022:30:220
134491410,4ptp4l0-21swapper/022:26:000
134491410,3ptp4l32642-21ntp_states23:40:251
134491410,3ptp4l18647-21meminfo23:10:201
134491410,3ptp4l10381-21apt-get21:45:112
134491410,3ptp4l0-21swapper/222:15:382
134491400,5ptp4l9485-21ntpq00:00:202
134491400,5ptp4l4054-21sort19:10:241
134491400,5ptp4l0-21swapper/323:05:193
134491400,5ptp4l0-21swapper/322:51:053
134491400,5ptp4l0-21swapper/320:38:043
134491400,5ptp4l0-21swapper/221:20:272
134491400,5ptp4l0-21swapper/220:37:232
134491400,4ptp4l6103-21fschecks_time21:35:153
134491400,4ptp4l3619-21/usr/sbin/munin22:40:121
134491400,4ptp4l27777-21/usr/sbin/munin21:10:231
134491400,4ptp4l21501-21apt-get21:00:011
134491400,4ptp4l212-21systemd-journal20:59:592
134491400,4ptp4l13052-21apt-get23:00:111
134491400,4ptp4l0-21swapper/321:45:173
134491400,4ptp4l0-21swapper/321:05:203
134491400,4ptp4l0-21swapper/320:40:243
134491400,4ptp4l0-21swapper/320:15:223
134491400,4ptp4l0-21swapper/320:05:163
134491400,4ptp4l0-21swapper/300:10:123
134491400,4ptp4l0-21swapper/223:47:232
134491400,4ptp4l0-21swapper/223:00:062
134491400,4ptp4l0-21swapper/221:25:162
134491400,4ptp4l0-21swapper/220:11:062
134491400,4ptp4l0-21swapper/122:57:031
134491400,4ptp4l0-21swapper/122:12:171
134491400,4ptp4l0-21swapper/122:12:171
134491400,4ptp4l0-21swapper/121:30:291
134491400,4ptp4l0-21swapper/120:10:261
134491400,4ptp4l0-21swapper/100:00:141
134491400,4ptp4l0-21swapper/023:01:260
134491400,3ptp4l1723-21df_inode23:45:143
134491400,3ptp4l16723-21apt-get19:40:131
134491400,3ptp4l15484-21apt-get00:15:122
134491400,3ptp4l10738-21apt-get22:55:133
134491390,5ptp4l31746-21irqrtprio21:20:193
134491390,5ptp4l0-21swapper/323:10:133
134491390,5ptp4l0-21swapper/100:30:221
134491390,4ptp4l16623-21apt-get20:50:031
134491390,4ptp4l0-21swapper/323:30:423
134491390,4ptp4l0-21swapper/322:31:113
134491390,4ptp4l0-21swapper/322:25:213
134491390,4ptp4l0-21swapper/321:40:213
134491390,4ptp4l0-21swapper/319:15:273
134491390,4ptp4l0-21swapper/319:10:313
134491390,4ptp4l0-21swapper/300:25:163
134491390,4ptp4l0-21swapper/223:30:372
134491390,4ptp4l0-21swapper/220:46:082
134491390,4ptp4l0-21swapper/220:06:052
134491390,4ptp4l0-21swapper/219:57:272
134491390,4ptp4l0-21swapper/219:50:172
134491390,4ptp4l0-21swapper/123:56:201
134491390,4ptp4l0-21swapper/122:20:361
134491390,4ptp4l0-21swapper/122:19:191
134491390,4ptp4l0-21swapper/121:27:401
134491390,4ptp4l0-21swapper/120:40:171
134491390,4ptp4l0-21swapper/120:25:131
134491390,4ptp4l0-21swapper/120:00:241
134491390,4ptp4l0-21swapper/119:52:341
134491390,4ptp4l0-21swapper/100:39:041
134491390,4ptp4l0-21swapper/100:10:521
134491390,3ptp4l30147-21ls23:35:202
134491390,3ptp4l13177-21/usr/sbin/munin21:50:173
134491380,4ptp4l0-21swapper/322:20:273
134491380,4ptp4l0-21swapper/320:52:413
134491380,4ptp4l0-21swapper/320:20:263
134491380,4ptp4l0-21swapper/319:38:443
134491380,4ptp4l0-21swapper/300:30:263
134491380,4ptp4l0-21swapper/223:25:402
134491380,4ptp4l0-21swapper/221:15:212
134491380,4ptp4l0-21swapper/122:52:201
134491380,4ptp4l0-21swapper/121:45:231
134491380,4ptp4l0-21swapper/120:45:101
134491380,3ptp4l0-21swapper/319:45:503
134491380,3ptp4l0-21swapper/222:25:202
134491380,3ptp4l0-21swapper/219:45:352
134491380,3ptp4l0-21swapper/123:16:081
134491380,3ptp4l0-21swapper/100:25:121
134491370,4ptp4l0-21swapper/319:20:203
134491370,3ptp4l0-21swapper/320:45:593
134491370,3ptp4l0-21swapper/319:59:503
46198360,4rtkit-daemon0-21swapper/319:54:013
134491360,4ptp4l0-21swapper/320:58:303
134491360,3ptp4l0-21swapper/321:10:003
46198340,4rtkit-daemon0-21swapper/319:29:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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