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2026-09-04 - 08:58
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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 04, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
297221740,3sleep3814099cyclictest21:15:243
3227621460,6sleep20-21swapper/221:10:182
134491770,11ptp4l1301-21snmpd19:05:343
8139997215,54cyclictest0-21swapper/223:15:282
8139997215,17cyclictest9371-21chrt23:46:552
8139997110,18cyclictest9874-21/usr/sbin/munin22:40:222
813999696,60cyclictest0-21swapper/223:25:002
813999689,57cyclictest0-21swapper/222:05:282
813999668,19cyclictest11297-21cpuspeed21:35:132
8139996615,19cyclictest29336-21chrt19:55:042
8139996614,11cyclictest28043-21taskset00:27:402
8139996513,11cyclictest31539-21taskset21:09:352
252682640,6sleep30-21swapper/319:45:183
8140996331,9cyclictest41-21ksoftirqd/320:50:263
8139996311,11cyclictest26554-21taskset19:46:472
8139996211,11cyclictest8550-21runrttasks21:28:372
134491620,5ptp4l0-21swapper/219:08:202
8139996110,17cyclictest22257-21dpkg19:40:112
8139996014,11cyclictest32634-21taskset00:37:262
8139996013,12cyclictest15803-21taskset21:45:052
8139996010,11cyclictest100272sleep219:12:402
8139995916,9cyclictest15895-21taskset22:54:282
8139995915,11cyclictest20088-21taskset20:45:032
8139995915,10cyclictest22930-21taskset23:07:432
134491590,3ptp4l5986-21users21:20:311
8139995814,8cyclictest10749-21taskset21:32:262
8139995811,12cyclictest19857-21chrt20:44:582
8139995811,11cyclictest22372-21chrt21:55:312
8139995810,14cyclictest16027-21meminfo19:25:212
134491580,4ptp4l0-21swapper/220:50:532
134491580,3ptp4l0-21swapper/022:35:230
134491580,3ptp4l0-21swapper/020:25:120
8139995712,10cyclictest23433-21taskset00:17:452
8139995711,11cyclictest30414-21chrt00:33:292
134491570,4ptp4l0-21swapper/219:34:082
8140995628,9cyclictest41-21ksoftirqd/323:55:273
8139995615,10cyclictest11778-21taskset23:53:182
8139995615,10cyclictest10496-21taskset20:23:422
134491560,4ptp4l0-21swapper/120:29:361
134491560,3ptp4l0-21swapper/119:45:241
134491560,2ptp4l121rcu_preempt21:10:200
814099554,10cyclictest0-21swapper/319:38:383
8139995514,7cyclictest21026-21taskset00:11:242
8139995513,11cyclictest29091-21taskset19:54:482
8139995511,11cyclictest7000-21taskset23:43:442
134491550,3ptp4l0-21swapper/022:52:590
134491550,3ptp4l0-21swapper/020:55:150
134491550,3ptp4l0-21swapper/020:55:150
814099544,6cyclictest0-21swapper/323:05:223
8139995415,10cyclictest18903-21taskset00:08:322
8139995415,10cyclictest18903-21taskset00:08:312
8139995414,11cyclictest28975-21chrt21:03:512
8139995410,9cyclictest0-21swapper/223:37:302
8139995410,9cyclictest0-21swapper/223:37:302
134491540,4ptp4l0-21swapper/119:25:261
134491540,4ptp4l0-21swapper/000:35:020
134491540,4ptp4l0-21swapper/000:06:560
134491540,4ptp4l0-21swapper/000:06:550
134491540,3ptp4l0-21swapper/020:36:240
814099533,6cyclictest41-21ksoftirqd/320:20:193
814099533,10cyclictest0-21swapper/323:52:013
134491530,4ptp4l0-21swapper/122:51:441
134491530,4ptp4l0-21swapper/122:41:031
134491530,4ptp4l0-21swapper/021:53:060
134491530,3ptp4l0-21swapper/122:35:241
134491530,11ptp4l0-21swapper/020:15:520
813999527,10cyclictest0-21swapper/220:35:002
8139995213,11cyclictest14464-21taskset00:00:082
8139995210,40cyclictest0-21swapper/223:55:152
134491520,4ptp4l0-21swapper/023:53:010
134491520,4ptp4l0-21swapper/023:01:260
134491520,3ptp4l0-21swapper/123:33:341
134491520,3ptp4l0-21swapper/020:05:010
134491520,3ptp4l0-21swapper/020:05:010
813999519,10cyclictest18636-21apt-config23:00:002
134491510,4ptp4l0-21swapper/023:38:480
134491510,4ptp4l0-21swapper/023:38:480
134491510,4ptp4l0-21swapper/019:46:450
134491510,3ptp4l0-21swapper/123:25:481
134491510,3ptp4l0-21swapper/123:00:211
134491510,18ptp4l9-21ksoftirqd/019:18:200
134491510,18ptp4l0-21swapper/119:30:181
814099506,5cyclictest0-21swapper/321:03:163
814099505,7cyclictest41-21ksoftirqd/300:10:173
814099505,7cyclictest41-21ksoftirqd/300:00:253
814099503,5cyclictest41-21ksoftirqd/320:30:113
814099502,7cyclictest0-21swapper/322:10:173
134491500,8ptp4l6741-21ls19:05:200
134491500,4ptp4l0-21swapper/100:33:411
134491500,13ptp4l0-21swapper/022:58:400
134491500,13ptp4l0-21swapper/000:24:550
814099492,11cyclictest0-21swapper/322:30:293
134491490,4ptp4l0-21swapper/123:51:371
814099486,6cyclictest0-21swapper/300:33:453
814099483,4cyclictest0-21swapper/320:15:143
813999486,9cyclictest0-21swapper/220:00:232
8139994811,11cyclictest7931-21chrt20:15:422
134491480,9ptp4l0-21swapper/023:23:150
134491480,4ptp4l0-21swapper/100:38:521
134491480,4ptp4l0-21swapper/000:01:480
134491480,11ptp4l0-21swapper/122:29:571
814099478,4cyclictest41-21ksoftirqd/322:35:283
814099475,6cyclictest0-21swapper/323:46:593
814099475,6cyclictest0-21swapper/320:41:063
814099474,6cyclictest0-21swapper/321:12:193
814099474,10cyclictest0-21swapper/323:41:023
814099474,10cyclictest0-21swapper/322:40:393
814099473,8cyclictest388-21gmain22:25:003
814099473,7cyclictest0-21swapper/323:30:213
814099473,6cyclictest0-21swapper/320:06:173
814099473,6cyclictest0-21swapper/320:06:173
814099473,10cyclictest0-21swapper/321:26:093
814099473,10cyclictest0-21swapper/321:06:113
814099473,10cyclictest0-21swapper/319:16:433
814099470,7cyclictest41-21ksoftirqd/300:05:263
814099470,7cyclictest41-21ksoftirqd/300:05:263
134491470,4ptp4l0-21swapper/123:40:061
134491470,4ptp4l0-21swapper/122:22:491
134491470,3ptp4l0-21swapper/023:06:570
814099464,6cyclictest0-21swapper/321:55:363
814099464,10cyclictest0-21swapper/320:59:223
814099464,10cyclictest0-21swapper/320:59:223
814099463,6cyclictest0-21swapper/320:39:373
814099460,6cyclictest41-21ksoftirqd/319:55:163
813999467,12cyclictest21732sleep223:31:392
813999465,9cyclictest0-21swapper/222:45:302
8139994613,10cyclictest1301-21snmpd22:26:022
8139994610,33cyclictest32217-21apt-get22:20:112
134491460,3ptp4l0-21swapper/120:05:141
134491460,3ptp4l0-21swapper/120:05:131
814099454,6cyclictest0-21swapper/322:48:053
814099454,6cyclictest0-21swapper/300:35:013
814099454,5cyclictest0-21swapper/319:44:173
814099453,5cyclictest0-21swapper/320:45:313
814099453,10cyclictest0-21swapper/319:20:323
814099452,6cyclictest0-21swapper/320:25:213
814099452,5cyclictest41-21ksoftirqd/300:20:133
814099451,7cyclictest41-21ksoftirqd/300:25:173
814099451,6cyclictest41-21ksoftirqd/321:45:213
813999459,12cyclictest17714-21sed22:55:262
8139994511,11cyclictest14648-21ntp_states21:40:262
134491450,4ptp4l0-21swapper/120:20:001
814099445,6cyclictest0-21swapper/322:55:283
814099443,9cyclictest0-21swapper/300:17:163
814099443,6cyclictest41-21ksoftirqd/319:50:173
814099442,10cyclictest0-21swapper/319:25:223
814099440,7cyclictest41-21ksoftirqd/323:11:523
134491440,4ptp4l10853-21apt-get20:25:132
134491440,4ptp4l0-21swapper/122:17:411
134491440,4ptp4l0-21swapper/000:31:060
134491440,3ptp4l0-21swapper/321:34:413
134491440,3ptp4l0-21swapper/321:20:033
134491440,3ptp4l0-21swapper/219:15:062
814099434,7cyclictest0-21swapper/322:15:463
814099434,6cyclictest0-21swapper/322:23:273
814099433,6cyclictest0-21swapper/319:12:203
8140994330,4cyclictest41-21ksoftirqd/321:40:003
814099432,11cyclictest0-21swapper/323:20:243
814099431,5cyclictest0-21swapper/323:35:173
814099431,5cyclictest0-21swapper/323:35:173
814099430,6cyclictest41-21ksoftirqd/320:00:273
134491430,8ptp4l0-21swapper/020:23:300
134491430,5ptp4l0-21swapper/121:10:221
134491430,4ptp4l0-21swapper/123:18:191
134491430,4ptp4l0-21swapper/022:07:060
134491430,4ptp4l0-21swapper/019:52:550
8139994215,16cyclictest26393-21taskset20:55:332
8139994215,16cyclictest26393-21taskset20:55:332
8139994211,9cyclictest0-21swapper/221:53:352
134491420,9ptp4l0-21swapper/222:34:382
134491420,7ptp4l6640-21cut19:05:191
134491420,5ptp4l17244-21ls21:45:270
134491420,4ptp4l77850irq/145-enp4s0-21:17:462
134491420,4ptp4l26187-21apt-get00:25:131
134491420,4ptp4l0-21swapper/120:30:281
134491420,4ptp4l0-21swapper/023:47:500
134491420,4ptp4l0-21swapper/000:18:210
134491420,3ptp4l11598-21apt-get22:45:111
134491420,3ptp4l0-21swapper/022:42:280
8140994135,3cyclictest41-21ksoftirqd/322:00:173
813999419,11cyclictest0-21swapper/223:26:222
8139994117,21cyclictest4312-21apt21:20:132
8139994116,10cyclictest8705-21chrt22:38:362
8139994112,26cyclictest1317-21runrttasks19:20:482
8139994111,10cyclictest3916-21/usr/sbin/munin20:10:292
134491410,5ptp4l4897-21/usr/sbin/munin22:30:191
134491410,5ptp4l3172-21hddtemp_smartct23:35:171
134491410,5ptp4l3172-21hddtemp_smartct23:35:171
134491410,5ptp4l0-21swapper/122:55:151
134491410,4ptp4l9868-21meminfo21:30:260
134491410,4ptp4l25008-21df_inode20:55:151
134491410,4ptp4l25008-21df_inode20:55:151
134491410,4ptp4l2475-21diskstats22:25:160
134491410,4ptp4l14378-21irqstats21:40:220
134491410,4ptp4l12784-21apt-get19:20:131
134491410,4ptp4l0-21swapper/019:20:560
134491410,3ptp4l7041-21hddtemp_smartct21:25:190
134491410,3ptp4l5040-21iostat_ios22:30:220
134491410,3ptp4l3930-21apt-get20:10:120
134491410,3ptp4l0-21swapper/120:15:411
814099406,5cyclictest41-21ksoftirqd/322:05:203
814099404,5cyclictest0-21swapper/320:12:323
814099401,6cyclictest0-21swapper/321:50:263
814099401,5cyclictest0-21swapper/321:40:253
134491400,8ptp4l0-21swapper/023:15:090
134491400,5ptp4l0-21swapper/122:05:221
134491400,4ptp4l31339-21irqstats23:25:180
134491400,4ptp4l20324-21df20:45:141
134491400,4ptp4l0-21swapper/220:05:102
134491400,4ptp4l0-21swapper/220:05:102
134491400,4ptp4l0-21swapper/121:35:201
134491400,4ptp4l0-21swapper/121:25:191
134491400,4ptp4l0-21swapper/120:35:241
134491400,4ptp4l0-21swapper/120:00:251
134491400,4ptp4l0-21swapper/023:40:270
134491400,4ptp4l0-21swapper/022:45:220
134491400,4ptp4l0-21swapper/021:08:040
134491400,4ptp4l0-21swapper/020:00:140
134491400,3ptp4l31316-21ls22:15:250
134491400,3ptp4l22408-21apt-get20:50:110
134491400,3ptp4l20113-21apt-get20:45:110
134491400,3ptp4l0-21swapper/023:10:140
134491400,2ptp4l0-21swapper/123:47:181
814099391,6cyclictest41-21ksoftirqd/323:15:283
814099390,6cyclictest41-21ksoftirqd/323:25:203
814099390,13cyclictest41-21ksoftirqd/322:50:293
8139993914,11cyclictest31753-21taskset22:17:402
134491390,6ptp4l0-21swapper/021:15:020
134491390,5ptp4l0-21swapper/319:30:223
134491390,5ptp4l0-21swapper/019:30:150
134491390,4ptp4l22737-21users23:05:271
134491390,4ptp4l0-21swapper/222:13:122
134491390,4ptp4l0-21swapper/122:10:201
134491390,4ptp4l0-21swapper/121:31:491
134491390,4ptp4l0-21swapper/121:17:391
134491390,4ptp4l0-21swapper/119:35:171
134491390,4ptp4l0-21swapper/100:11:321
134491390,4ptp4l0-21swapper/023:30:210
134491390,4ptp4l0-21swapper/022:20:190
134491390,4ptp4l0-21swapper/022:12:520
134491390,4ptp4l0-21swapper/021:35:130
134491390,4ptp4l0-21swapper/021:20:340
134491390,4ptp4l0-21swapper/021:00:150
134491390,4ptp4l0-21swapper/019:41:240
134491390,3ptp4l29070-21apt-get21:05:041
134491390,3ptp4l27720-21apt-get23:20:021
134491390,3ptp4l27626-21iostat19:50:201
134491390,3ptp4l23948-21meminfo22:00:190
134491390,3ptp4l21779-21apt-get19:40:041
134491390,3ptp4l20033-21diskstats19:35:140
134491390,3ptp4l16460-21date20:35:212
134491390,3ptp4l15291-21df19:25:150
134491390,3ptp4l0-21swapper/000:10:160
134491390,2ptp4l8739-21iostat_ios19:10:180
134491390,2ptp4l18328-21iostat_ios20:40:171
134491390,2ptp4l14481-21meminfo21:40:221
8140993833,3cyclictest41-21ksoftirqd/323:00:233
8139993810,12cyclictest24390-21switchtime22:00:252
134491380,5ptp4l0-21swapper/122:00:221
134491380,4ptp4l0-21swapper/223:10:522
134491380,4ptp4l0-21swapper/219:35:232
134491380,4ptp4l0-21swapper/123:10:151
134491380,4ptp4l0-21swapper/120:10:171
134491380,4ptp4l0-21swapper/119:15:281
134491380,4ptp4l0-21swapper/119:10:181
134491380,4ptp4l0-21swapper/100:20:361
134491380,4ptp4l0-21swapper/100:18:131
134491380,4ptp4l0-21swapper/100:05:171
134491380,4ptp4l0-21swapper/100:05:171
134491380,4ptp4l0-21swapper/021:56:250
134491380,4ptp4l0-21swapper/020:33:110
134491380,4ptp4l0-21swapper/019:55:520
134491380,3ptp4l19259-21ls20:40:250
134491380,3ptp4l16772-21meminfo21:45:191
134491380,3ptp4l0-21swapper/100:01:201
134491380,3ptp4l0-21swapper/000:25:220
8138993732,3cyclictest23496-21ntp_kernel_pll_20:50:221
134491370,4ptp4l0-21swapper/200:22:212
134491370,4ptp4l0-21swapper/123:59:351
134491370,4ptp4l0-21swapper/121:55:551
134491370,4ptp4l0-21swapper/121:51:521
134491370,4ptp4l0-21swapper/121:00:061
134491370,4ptp4l0-21swapper/119:58:351
134491370,4ptp4l0-21swapper/023:55:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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