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2025-12-07 - 21:58
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Sun Dec 07, 2025 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1994921630,6sleep21147199cyclictest07:25:242
1147099711,26cyclictest1306-21df_abs11:25:151
1147099670,30cyclictest27923-21cat10:00:281
1147099660,25cyclictest9713-21date08:15:011
1147099651,26cyclictest14898-21sed10:45:011
206712640,5sleep10-21swapper/110:55:241
1147099640,27cyclictest13003-21df_abs11:50:171
1147099620,25cyclictest4329-21ls08:00:281
1147099610,25cyclictest7409-21latency_hist09:20:011
2847191600,4ptp4l2815-21apt08:00:110
2847191600,4ptp4l11502-21apt-get07:10:133
2847191600,4ptp4l0-21swapper/210:57:302
2847191600,3ptp4l0-21swapper/007:39:480
1147199602,29cyclictest0-21swapper/208:58:042
1147099601,27cyclictest1778-21gnome-shell07:57:591
2847191590,5ptp4l0-21swapper/012:05:150
2847191590,3ptp4l0-21swapper/109:05:161
1147099591,24cyclictest23668-21switchtime12:10:251
1147099590,32cyclictest12870-21cut08:20:231
1147099590,30cyclictest18000-21seq07:21:531
306292580,4sleep00-21swapper/007:50:140
1147099582,25cyclictest0-21swapper/110:07:291
1147099580,30cyclictest11631-21seq08:17:461
2847191570,4ptp4l0-21swapper/311:45:383
2847191570,3ptp4l29019-21df_inode10:05:180
1147099571,29cyclictest2839-21seq10:17:241
1147099571,28cyclictest16837-21seq10:47:541
1147099571,28cyclictest16837-21seq10:47:541
1147099570,30cyclictest32228-21seq07:50:421
1147099570,30cyclictest12204-21seq10:37:591
1147099570,29cyclictest9433-21seq09:22:211
1147099570,29cyclictest21101-21taskset08:39:501
1147099570,28cyclictest20972-21seq09:46:071
2847191560,4ptp4l0-21swapper/312:01:133
2847191560,4ptp4l0-21swapper/011:48:340
2847191560,4ptp4l0-21swapper/011:31:030
2847191560,3ptp4l0-21swapper/009:30:150
2847191560,3ptp4l0-21swapper/008:37:460
1147199562,27cyclictest0-21swapper/211:42:552
1147099561,28cyclictest9996-21taskset11:43:051
1147099560,30cyclictest21731-21seq12:06:361
1147099560,29cyclictest453-21seq10:12:431
1147099560,29cyclictest12005-21seq09:29:551
1147099560,28cyclictest26209-21taskset11:09:131
1147099560,28cyclictest16885-21seq11:56:451
1147099560,27cyclictest5360-21taskset10:24:541
11469995622,5cyclictest9-21ksoftirqd/011:39:590
2847191550,4ptp4l0-21swapper/010:59:290
2847191550,4ptp4l0-21swapper/008:15:590
2847191550,3ptp4l0-21swapper/312:15:233
2847191550,3ptp4l0-21swapper/010:22:020
1147199553,7cyclictest7891-21awk11:39:592
1147099550,31cyclictest27582-21seq07:43:121
1147099550,30cyclictest25803-21seq09:56:021
1147099550,30cyclictest20655-21seq07:28:341
1147099550,29cyclictest7450-21seq10:27:041
1147099550,29cyclictest30019-21seq07:49:461
1147099550,28cyclictest4972-21seq09:14:431
1147099550,28cyclictest28058-21seq08:54:531
1147099550,24cyclictest23027-21ntpq11:00:231
11469995521,4cyclictest9-21ksoftirqd/010:20:010
2847191540,4ptp4l0-21swapper/009:56:440
2847191540,4ptp4l0-21swapper/008:26:460
2847191540,3ptp4l0-21swapper/312:37:543
11472995415,7cyclictest41-21ksoftirqd/309:05:003
1147199543,13cyclictest0-21swapper/208:45:182
1147099541,30cyclictest1778-21gnome-shell08:07:591
1147099541,29cyclictest23479-21seq09:53:371
1147099541,28cyclictest18553-21taskset08:31:431
1147099541,28cyclictest1778-21gnome-shell08:25:581
1147099541,28cyclictest13571-21taskset07:14:371
1147099540,30cyclictest9702-21seq10:31:171
1147099540,30cyclictest14098-21seq09:32:081
1147099540,29cyclictest26342-21seq12:16:281
1147099540,28cyclictest25479-21seq08:46:211
1147099540,28cyclictest19483-21seq12:02:271
2847191530,3ptp4l0-21swapper/011:53:290
2847191530,3ptp4l0-21swapper/011:27:190
1147099531,29cyclictest1778-21gnome-shell09:04:591
1147099531,29cyclictest1011-21seq12:33:081
1147099531,27cyclictest31043-21taskset12:27:091
1147099530,29cyclictest28354-21seq11:12:041
1147099530,29cyclictest16516-21seq09:38:301
1147099530,28cyclictest3191-21taskset12:35:351
1147099530,28cyclictest12288-21taskset11:47:021
2847191520,6ptp4l33-21ksoftirqd/209:01:122
2847191520,4ptp4l0-21swapper/011:58:480
2847191520,4ptp4l0-21swapper/009:12:390
1147199523,7cyclictest321ktimersoftd/208:09:592
1147099520,29cyclictest25230-21seq07:37:541
1147099520,29cyclictest22553-21taskset08:40:351
2847191510,4ptp4l0-21swapper/309:29:083
2847191510,4ptp4l0-21swapper/011:19:440
2847191510,4ptp4l0-21swapper/008:59:300
2847191510,4ptp4l0-21swapper/008:34:210
2847191510,3ptp4l0-21swapper/009:38:130
2847191510,3ptp4l0-21swapper/008:05:170
11472995113,4cyclictest41-21ksoftirqd/311:15:003
1147199515,7cyclictest0-21swapper/207:20:282
1147099511,28cyclictest19137-21taskset10:52:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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