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2025-12-06 - 20:45
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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 Sat Dec 06, 2025 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2525721650,6sleep12370799cyclictest09:30:191
194362760,4sleep219419-21apt-get08:10:012
133772610,6sleep02370699cyclictest10:10:300
2847191600,20ptp4l0-21swapper/307:07:323
2370899603,29cyclictest0-21swapper/212:15:262
2847191590,5ptp4l0-21swapper/108:20:191
2847191580,4ptp4l0-21swapper/110:15:151
2847191580,3ptp4l0-21swapper/108:45:251
2847191580,3ptp4l0-21swapper/108:41:091
2847191570,3ptp4l0-21swapper/012:25:250
2847191570,2ptp4l0-21swapper/011:44:180
2847191570,13ptp4l0-21swapper/107:49:211
2847191560,3ptp4l0-21swapper/112:05:171
2847191560,3ptp4l0-21swapper/110:55:011
2847191550,3ptp4l0-21swapper/112:30:071
2847191550,3ptp4l0-21swapper/112:23:171
2847191550,3ptp4l0-21swapper/111:00:231
2847191540,5ptp4l0-21swapper/311:54:463
2847191540,4ptp4l0-21swapper/107:34:401
2847191540,3ptp4l0-21swapper/109:15:281
2370899542,28cyclictest0-21swapper/209:20:402
2847191530,4ptp4l0-21swapper/108:50:331
2847191530,3ptp4l0-21swapper/107:23:541
2847191530,2ptp4l0-21swapper/012:36:540
2370899532,32cyclictest0-21swapper/207:30:142
2847191520,4ptp4l0-21swapper/311:58:193
2847191520,4ptp4l0-21swapper/108:05:231
2847191520,11ptp4l0-21swapper/107:25:171
2847191510,6ptp4l0-21swapper/207:05:172
2847191510,4ptp4l0-21swapper/108:19:591
2370899513,7cyclictest0-21swapper/211:05:272
2847191500,4ptp4l0-21swapper/312:34:113
2847191500,4ptp4l0-21swapper/109:46:221
2847191500,4ptp4l0-21swapper/109:08:421
2370899505,9cyclictest33-21ksoftirqd/210:44:592
2847191490,9ptp4l0-21swapper/012:09:270
2847191490,4ptp4l0-21swapper/111:30:301
2847191490,15ptp4l9-21ksoftirqd/011:13:250
2847191490,11ptp4l0-21swapper/010:49:370
23709994917,4cyclictest41-21ksoftirqd/310:19:593
2370899495,6cyclictest33-21ksoftirqd/210:10:182
2370899494,9cyclictest33-21ksoftirqd/210:05:012
23708994919,7cyclictest33-21ksoftirqd/210:35:172
2370899490,6cyclictest17900-21turbostat.cron09:15:002
2847191480,4ptp4l26802-21ntp_states10:40:240
2847191480,4ptp4l0-21swapper/211:51:222
2847191480,4ptp4l0-21swapper/112:12:161
2847191480,3ptp4l0-21swapper/107:36:001
2370899482,6cyclictest33-21ksoftirqd/212:05:252
2370899482,6cyclictest33-21ksoftirqd/210:20:262
2370899482,6cyclictest33-21ksoftirqd/208:40:012
23708994818,4cyclictest33-21ksoftirqd/209:50:162
2370899480,6cyclictest321ktimersoftd/210:05:192
2847191470,4ptp4l0-21swapper/307:48:103
2847191470,3ptp4l0-21swapper/210:25:042
2847191470,3ptp4l0-21swapper/111:55:281
2370899474,9cyclictest33-21ksoftirqd/208:25:242
2370899474,6cyclictest27797-21apt-get10:44:592
2370899472,8cyclictest0-21swapper/211:15:182
2370899472,7cyclictest0-21swapper/209:45:132
2370899472,7cyclictest0-21swapper/209:00:182
2370899471,6cyclictest33-21ksoftirqd/212:00:202
2370899470,7cyclictest209032chrt11:37:162
2847191460,3ptp4l0-21swapper/111:27:471
2847191460,3ptp4l0-21swapper/110:31:551
2847191460,3ptp4l0-21swapper/011:30:390
2370899466,5cyclictest33-21ksoftirqd/210:30:302
2370899465,8cyclictest33-21ksoftirqd/209:15:202
2370899465,7cyclictest15397-21mailstats10:15:262
2370899463,7cyclictest33-21ksoftirqd/208:40:322
2370899462,5cyclictest33-21ksoftirqd/209:44:592
2370899462,5cyclictest0-21swapper/209:30:332
2370899462,37cyclictest0-21swapper/212:20:172
2847191450,4ptp4l0-21swapper/109:42:521
2847191450,2ptp4l0-21swapper/009:36:260
2370999458,4cyclictest41-21ksoftirqd/311:15:003
23709994513,7cyclictest41-21ksoftirqd/309:45:003
2370899454,8cyclictest33-21ksoftirqd/211:35:012
2370899453,7cyclictest33-21ksoftirqd/211:25:002
2370899453,6cyclictest33-21ksoftirqd/208:10:252
2370899453,6cyclictest0-21swapper/211:10:162
2370899452,6cyclictest321ktimersoftd/209:35:252
23708994519,9cyclictest33-21ksoftirqd/209:26:152
23708994519,9cyclictest33-21ksoftirqd/209:26:152
2370899451,5cyclictest0-21swapper/210:55:302
2370899451,5cyclictest0-21swapper/209:55:142
2370899451,5cyclictest0-21swapper/209:55:142
2370899450,6cyclictest33-21ksoftirqd/212:35:412
2847191440,9ptp4l0-21swapper/211:55:532
2847191440,4ptp4l19059-21apt-get11:35:151
2847191440,18ptp4l0-21swapper/008:05:210
2370999441,2cyclictest121rcu_preempt09:32:263
2370999440,2cyclictest121rcu_preempt11:18:323
2370899445,9cyclictest33-21ksoftirqd/208:50:262
2370899445,10cyclictest33-21ksoftirqd/211:45:272
2370899443,7cyclictest0-21swapper/208:45:262
2370899443,6cyclictest33-21ksoftirqd/207:20:242
2370899443,5cyclictest0-21swapper/208:15:192
2370899442,6cyclictest0-21swapper/207:15:252
2370899442,27cyclictest0-21swapper/211:00:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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