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2026-08-20 - 13:08
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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 highest latencies:
System rackdslot1.osadl.org (updated Thu Aug 20, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
671999783,30cyclictest2238-21/usr/sbin/munin20:10:132
671999760,73cyclictest27567-21taskset22:10:292
6719997410,62cyclictest0-21swapper/220:05:282
261112670,4sleep2321ktimersoftd/219:50:192
671999650,25cyclictest24770-21taskset19:48:142
134491640,12ptp4l0-21swapper/022:03:150
671999633,57cyclictest0-21swapper/219:20:292
671999629,18cyclictest12142-21latency_hist00:00:002
671999620,27cyclictest30281-21chrt23:28:242
134491620,3ptp4l2026-21ls21:15:270
671999611,27cyclictest23041-21taskset20:53:142
104662610,3sleep20-21swapper/220:25:212
671999600,26cyclictest18683-21taskset21:54:202
671999600,22cyclictest10168-21ntp_states19:15:232
671999600,22cyclictest10168-21ntp_states19:15:232
671999592,27cyclictest30104-21chrt22:18:152
671999590,28cyclictest18191-21taskset20:42:382
134491590,5ptp4l0-21swapper/323:20:113
671999581,26cyclictest15548-21taskset19:28:012
134491570,3ptp4l0-21swapper/322:48:583
134491570,3ptp4l0-21swapper/223:54:442
134491570,18ptp4l0-21swapper/022:39:110
672099565,10cyclictest0-21swapper/323:25:053
134491560,4ptp4l0-21swapper/223:10:042
134491560,4ptp4l0-21swapper/223:10:042
134491560,4ptp4l0-21swapper/000:00:000
134491560,3ptp4l0-21swapper/323:05:263
672099554,7cyclictest0-21swapper/323:30:233
672099545,10cyclictest0-21swapper/322:36:553
224292540,4sleep1671899cyclictest22:00:241
134491540,4ptp4l0-21swapper/023:18:430
134491540,3ptp4l0-21swapper/100:25:161
134491540,2ptp4l0-21swapper/120:18:511
672099535,13cyclictest0-21swapper/321:45:183
672099532,7cyclictest0-21swapper/323:15:113
134491530,11ptp4l4352-21apt-get19:05:242
672099525,10cyclictest0-21swapper/322:51:513
672099524,6cyclictest0-21swapper/321:40:273
672099524,10cyclictest0-21swapper/320:35:363
672099524,10cyclictest0-21swapper/300:28:283
671999522,22cyclictest0-21swapper/222:31:162
134691520,4getstats0-21swapper/221:40:012
134491520,3ptp4l0-21swapper/020:59:290
672099517,6cyclictest0-21swapper/320:45:213
672099515,10cyclictest0-21swapper/323:14:103
672099515,10cyclictest0-21swapper/323:14:103
672099514,10cyclictest0-21swapper/321:21:223
671999512,48cyclictest0-21swapper/200:21:292
672099506,6cyclictest0-21swapper/322:20:243
672099505,6cyclictest0-21swapper/300:39:083
672099505,10cyclictest0-21swapper/321:38:113
672099502,32cyclictest0-21swapper/320:30:193
134491500,3ptp4l0-21swapper/300:30:023
134491500,3ptp4l0-21swapper/222:08:162
672099495,10cyclictest0-21swapper/322:03:053
672099494,7cyclictest0-21swapper/323:36:133
672099494,11cyclictest0-21swapper/300:06:463
672099494,10cyclictest0-21swapper/319:14:453
672099493,6cyclictest0-21swapper/322:13:003
672099492,6cyclictest0-21swapper/321:55:293
672099492,34cyclictest0-21swapper/323:40:283
672099492,34cyclictest0-21swapper/322:40:203
672099490,6cyclictest401ktimersoftd/323:49:593
134491490,6ptp4l0-21swapper/019:06:010
134491490,5ptp4l671999cyclictest23:40:282
672099487,5cyclictest41-21ksoftirqd/322:34:593
672099486,7cyclictest0-21swapper/319:23:483
672099486,6cyclictest0-21swapper/321:17:383
672099485,7cyclictest0-21swapper/319:33:273
672099485,10cyclictest0-21swapper/300:03:453
672099484,6cyclictest0-21swapper/323:55:393
672099484,6cyclictest0-21swapper/323:01:513
672099484,10cyclictest0-21swapper/322:16:013
672099483,4cyclictest0-21swapper/322:55:143
672099482,6cyclictest0-21swapper/319:27:513
672099482,19cyclictest0-21swapper/320:16:093
134491480,4ptp4l0-21swapper/021:46:400
672099476,12cyclictest0-21swapper/321:25:443
672099475,10cyclictest0-21swapper/322:29:173
672099475,10cyclictest0-21swapper/321:14:043
672099472,6cyclictest0-21swapper/321:03:513
672099472,6cyclictest0-21swapper/321:03:513
672099472,6cyclictest0-21swapper/319:57:513
671999472,22cyclictest0-21swapper/219:11:542
671999471,44cyclictest0-21swapper/223:47:292
671999470,28cyclictest134491ptp4l21:40:162
134491470,4ptp4l0-21swapper/021:55:370
672099466,6cyclictest0-21swapper/320:20:293
672099466,5cyclictest0-21swapper/321:52:323
672099465,6cyclictest0-21swapper/320:28:233
672099465,6cyclictest0-21swapper/320:08:053
672099464,6cyclictest0-21swapper/300:21:353
672099463,7cyclictest0-21swapper/319:45:163
672099463,11cyclictest0-21swapper/319:36:273
671999462,18cyclictest0-21swapper/221:45:242
134491460,9ptp4l0-21swapper/319:05:233
134491460,4ptp4l0-21swapper/320:44:453
134491460,12ptp4l0-21swapper/022:10:260
672099457,5cyclictest0-21swapper/322:08:123
672099456,6cyclictest0-21swapper/319:50:433
672099455,6cyclictest0-21swapper/300:16:453
672099454,6cyclictest0-21swapper/319:18:543
672099454,6cyclictest0-21swapper/319:18:543
672099454,10cyclictest0-21swapper/300:11:353
672099452,6cyclictest0-21swapper/319:42:513
672099452,37cyclictest0-21swapper/320:00:343
671999451,29cyclictest7043-21taskset21:27:362
134491450,4ptp4l0-21swapper/223:20:032
134491450,10ptp4l0-21swapper/200:00:192
672099446,5cyclictest0-21swapper/320:14:433
672099444,6cyclictest0-21swapper/321:05:223
672099442,6cyclictest0-21swapper/320:51:513
672099442,32cyclictest0-21swapper/323:50:173
671999442,21cyclictest0-21swapper/220:39:022
671999440,42cyclictest0-21swapper/219:30:182
134691440,3getstats2138-1kworker/2:2H23:00:012
134491440,4ptp4l31531-21ls22:20:210
134491440,3ptp4l11237-21ls22:45:290
134491440,3ptp4l0-21swapper/321:31:243
134491440,10ptp4l0-21swapper/222:00:062
671999430,29cyclictest20297-21awk23:05:232
134491430,4ptp4l29695-21ls22:15:270
134491430,3ptp4l0-21swapper/221:18:272
134491430,3ptp4l0-21swapper/221:02:412
134491430,3ptp4l0-21swapper/221:02:412
134491430,3ptp4l0-21swapper/200:11:482
672099422,7cyclictest0-21swapper/320:55:513
671999420,23cyclictest1317-21runrttasks21:24:202
134491420,9ptp4l0-21swapper/023:28:080
134491420,9ptp4l0-21swapper/019:40:530
134491420,5ptp4l0-21swapper/022:40:130
134491420,5ptp4l0-21swapper/020:00:340
134491420,4ptp4l5484-21df_inode21:25:150
134491420,4ptp4l10351-21iostat_ios21:35:190
134491420,3ptp4l6465-21ls19:10:010
134491420,3ptp4l12736-21ls20:30:190
671999411,24cyclictest339-21apt-get22:25:112
671999410,29cyclictest9085-21chrt20:23:532
134491410,9ptp4l0-21swapper/000:07:420
134491410,5ptp4l0-21swapper/200:05:122
134491410,5ptp4l0-21swapper/019:35:130
134491410,4ptp4l7471-21/usr/sbin/munin21:30:190
134491410,4ptp4l27452-21apt-get19:55:092
134491410,4ptp4l2318-21gnome-shell19:11:591
134491410,4ptp4l14543-21apt-get22:55:142
134491410,4ptp4l0-21swapper/020:45:160
134491410,3ptp4l5115-21apt-get22:35:142
134491410,3ptp4l29986-21apt-get20:00:142
671999408,29cyclictest20759-21strings00:15:212
134491400,9ptp4l0-21swapper/021:10:040
134491400,5ptp4l0-21swapper/119:07:071
134491400,5ptp4l0-21swapper/021:50:120
134491400,5ptp4l0-21swapper/021:05:230
134491400,5ptp4l0-21swapper/019:31:310
134491400,5ptp4l0-21swapper/000:32:550
134491400,4ptp4l18384-21apt-get20:45:012
134491400,4ptp4l12457-21hddtemp_smartct22:50:170
134491400,4ptp4l0-21swapper/123:50:221
134491400,4ptp4l0-21swapper/023:04:350
134491400,4ptp4l0-21swapper/022:05:210
134491400,4ptp4l0-21swapper/021:00:170
134491400,4ptp4l0-21swapper/021:00:170
134491400,4ptp4l0-21swapper/020:25:160
134491400,4ptp4l0-21swapper/019:59:080
134491400,4ptp4l0-21swapper/019:45:260
134491400,4ptp4l0-21swapper/000:11:260
134491400,3ptp4l23190-21apt-get20:55:022
134491400,3ptp4l2318-21gnome-shell20:14:580
134491400,3ptp4l22470-21ls23:10:201
134491400,3ptp4l22470-21ls23:10:201
671999393,34cyclictest0-21swapper/223:16:252
671999390,25cyclictest2457-21chrt23:37:312
671999390,25cyclictest22569-21taskset19:44:282
134491390,5ptp4l0-21swapper/222:50:242
134491390,5ptp4l0-21swapper/121:05:171
134491390,5ptp4l0-21swapper/120:51:411
134491390,5ptp4l0-21swapper/023:10:270
134491390,5ptp4l0-21swapper/023:10:270
134491390,5ptp4l0-21swapper/000:35:140
134491390,5ptp4l0-21swapper/000:15:130
134491390,4ptp4l26639-21iostat_ios23:20:161
134491390,4ptp4l20017-21/usr/sbin/munin20:45:231
134491390,4ptp4l12668-21meminfo20:30:182
134491390,4ptp4l0-21swapper/222:40:112
134491390,4ptp4l0-21swapper/222:20:492
134491390,4ptp4l0-21swapper/219:35:152
134491390,4ptp4l0-21swapper/200:35:112
134491390,4ptp4l0-21swapper/023:55:080
134491390,4ptp4l0-21swapper/023:48:010
134491390,4ptp4l0-21swapper/023:38:330
134491390,4ptp4l0-21swapper/023:24:290
134491390,4ptp4l0-21swapper/023:05:150
134491390,4ptp4l0-21swapper/022:56:010
134491390,4ptp4l0-21swapper/022:30:370
134491390,4ptp4l0-21swapper/022:26:420
134491390,4ptp4l0-21swapper/021:40:200
134491390,4ptp4l0-21swapper/021:22:330
134491390,4ptp4l0-21swapper/020:53:520
134491390,4ptp4l0-21swapper/020:40:570
134491390,4ptp4l0-21swapper/020:09:490
134491390,4ptp4l0-21swapper/019:52:190
134491390,4ptp4l0-21swapper/019:27:270
134491390,4ptp4l0-21swapper/019:21:580
134491390,4ptp4l0-21swapper/019:17:090
134491390,4ptp4l0-21swapper/019:17:090
134491390,4ptp4l0-21swapper/000:25:230
134491390,3ptp4l8744-21meminfo23:50:200
134491390,3ptp4l8502-21ls21:30:222
134491390,3ptp4l30556-21apt-get21:10:122
134491390,3ptp4l20559-21ls21:55:292
134491390,3ptp4l14965-21memory20:35:190
671999382,31cyclictest24550-21apt-get00:25:132
134491380,5ptp4l0-21swapper/223:32:392
134491380,5ptp4l0-21swapper/122:30:121
134491380,4ptp4l0-21swapper/222:45:042
134491380,4ptp4l0-21swapper/221:05:112
134491380,4ptp4l0-21swapper/220:15:252
134491380,4ptp4l0-21swapper/200:32:572
134491380,4ptp4l0-21swapper/123:36:161
134491380,4ptp4l0-21swapper/123:19:421
134491380,4ptp4l0-21swapper/123:01:421
134491380,4ptp4l0-21swapper/122:30:001
134491380,4ptp4l0-21swapper/121:51:471
134491380,4ptp4l0-21swapper/121:45:151
134491380,4ptp4l0-21swapper/120:33:351
134491380,4ptp4l0-21swapper/120:10:261
134491380,4ptp4l0-21swapper/120:00:351
134491380,4ptp4l0-21swapper/119:56:071
134491380,4ptp4l0-21swapper/100:01:581
134491380,4ptp4l0-21swapper/023:40:190
134491380,4ptp4l0-21swapper/020:20:020
134491380,4ptp4l0-21swapper/020:16:060
134491380,3ptp4l22817-21iostat00:20:180
134491380,3ptp4l19834-21irqstats21:55:201
134491380,3ptp4l18364-21memory00:10:201
134491380,3ptp4l0-21swapper/122:45:161
134491380,3ptp4l0-21swapper/119:16:421
134491380,3ptp4l0-21swapper/119:16:421
134491380,2ptp4l23820-21ls00:20:271
6718993731,4cyclictest25-21ksoftirqd/122:50:131
6718993731,4cyclictest25-21ksoftirqd/122:23:471
134491370,4ptp4l0-21swapper/123:45:021
134491370,4ptp4l0-21swapper/123:30:101
134491370,4ptp4l0-21swapper/123:05:321
134491370,4ptp4l0-21swapper/122:42:111
134491370,4ptp4l0-21swapper/122:39:561
134491370,4ptp4l0-21swapper/122:15:171
134491370,4ptp4l0-21swapper/121:28:331
134491370,4ptp4l0-21swapper/119:48:541
134491370,4ptp4l0-21swapper/119:41:571
134491370,4ptp4l0-21swapper/119:21:111
134491370,4ptp4l0-21swapper/100:36:311
134491370,4ptp4l0-21swapper/100:34:011
134491370,4ptp4l0-21swapper/100:16:361
134491370,3ptp4l25-21ksoftirqd/119:52:401
134491370,3ptp4l0-21swapper/123:55:031
134491370,3ptp4l0-21swapper/123:44:441
134491370,3ptp4l0-21swapper/123:25:061
134491370,3ptp4l0-21swapper/122:07:091
134491370,3ptp4l0-21swapper/121:36:431
134491370,3ptp4l0-21swapper/121:32:541
134491370,3ptp4l0-21swapper/121:14:191
134491370,3ptp4l0-21swapper/120:57:271
134491370,3ptp4l0-21swapper/119:37:591
134491370,3ptp4l0-21swapper/100:05:091
134491370,3ptp4l0-21swapper/023:30:570
134491360,4ptp4l0-21swapper/122:55:511
134491360,4ptp4l0-21swapper/121:22:001
134491360,4ptp4l0-21swapper/120:22:501
134491360,3ptp4l0-21swapper/122:14:001
134491360,3ptp4l0-21swapper/121:40:241
134491360,3ptp4l0-21swapper/121:19:131
134491360,3ptp4l0-21swapper/120:40:411
134491360,3ptp4l0-21swapper/120:36:341
134491360,3ptp4l0-21swapper/120:08:091
134491360,3ptp4l0-21swapper/119:27:131
134491350,3ptp4l0-21swapper/121:04:451
134491350,3ptp4l0-21swapper/121:04:451
134491350,2ptp4l0-21swapper/119:30:481
134491340,3ptp4l0-21swapper/120:29:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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