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2025-12-03 - 20:11
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Wed Dec 03, 2025 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1700991007,62cyclictest18866-21apt-get11:00:130
124329914,39sleep00-21swapper/007:07:040
1700999464,16cyclictest0-21swapper/009:45:140
1700998844,35cyclictest14-21ksoftirqd/008:40:140
1700998719,58cyclictest0-21swapper/007:40:110
170099868,67cyclictest6324-21apt-get11:55:140
1700998616,56cyclictest0-21swapper/008:05:120
1700998615,58cyclictest0-21swapper/009:40:130
1700998615,57cyclictest0-21swapper/010:30:130
1700998614,57cyclictest0-21swapper/009:00:130
1700998612,61cyclictest0-21swapper/009:10:140
61342850,8chrt0-21swapper/108:50:291
1700998514,56cyclictest0-21swapper/008:50:140
1706998414,58cyclictest1692-21cyclictest08:25:141
170099847,66cyclictest27633-21apt-get11:25:120
170099847,63cyclictest3097-21apt-get10:15:130
170099847,63cyclictest29070-21apt-get08:25:120
1700998454,18cyclictest14-21ksoftirqd/012:35:140
1700998415,58cyclictest0-21swapper/010:50:140
1700998414,56cyclictest0-21swapper/010:00:150
1700998413,57cyclictest0-21swapper/012:20:140
1700998412,58cyclictest0-21swapper/012:15:240
1700998316,52cyclictest0-21swapper/010:20:110
1700998315,61cyclictest0-21swapper/009:25:220
1700998314,57cyclictest0-21swapper/009:15:140
170099827,61cyclictest17161-21apt-get12:25:130
170099826,61cyclictest15950-21apt-get09:20:150
1700998213,60cyclictest0-21swapper/008:35:130
170099817,61cyclictest3677-21apt-get08:45:130
170099816,64cyclictest8083-21apt-get12:00:120
170099816,63cyclictest1354-21apt-get10:10:130
1700998114,58cyclictest0-21swapper/011:15:160
1700998113,60cyclictest0-21swapper/010:55:140
170099807,62cyclictest4053-21apt-get07:15:220
170099807,60cyclictest6106-21apt-get07:20:250
170099806,60cyclictest18115-21apt-get07:52:400
1700998050,18cyclictest14-21ksoftirqd/012:30:150
170099803,71cyclictest254-21systemd-journal11:39:460
1700998017,53cyclictest0-21swapper/011:10:110
170099796,61cyclictest1785-21apt-get07:10:150
170099796,59cyclictest11614-21apt-get12:10:130
1700997949,20cyclictest14-21ksoftirqd/012:05:190
1700997918,51cyclictest0-21swapper/011:30:140
1700997918,51cyclictest0-21swapper/008:55:150
1700997912,55cyclictest0-21swapper/010:25:140
170099787,60cyclictest30810-21apt-get08:30:140
170099785,66cyclictest12229-21df_inode10:40:230
1700997848,18cyclictest0-21swapper/009:55:150
1700997821,51cyclictest13788-21aten2.4-expect10:45:190
1700997818,48cyclictest0-21swapper/007:55:130
123527825,41sleep10-21swapper/107:07:001
170099776,58cyclictest19735-21apt-get09:30:140
170099776,22cyclictest26758-21apt-get09:50:110
1700997750,14cyclictest0-21swapper/011:40:140
170099772,70cyclictest10647-21/usr/sbin/munin09:05:390
1700997724,47cyclictest487-21gdbus11:50:000
1700997713,58cyclictest21610-21aten2.4-expect09:35:230
1700997712,56cyclictest0-21swapper/008:15:140
1700997712,52cyclictest0-21swapper/008:10:140
170099767,54cyclictest27336-21apt-get08:20:150
170099765,57cyclictest31993-21apt-get10:05:130
1700997621,49cyclictest254-21systemd-journal07:38:580
1700997614,52cyclictest0-21swapper/011:20:170
170099756,63cyclictest0-21swapper/011:05:200
1700997519,51cyclictest254-21systemd-journal07:28:560
1700997513,51cyclictest0-21swapper/007:45:160
170099747,56cyclictest9586-21apt-get07:30:150
170699737,15cyclictest0-21swapper/110:10:131
170099736,56cyclictest4583-21apt-get11:50:130
170099736,56cyclictest4583-21apt-get11:50:120
170099727,57cyclictest10143-21aten2.4-expect10:35:170
170099724,63cyclictest461-21rs:main0
170699717,48cyclictest0-21swapper/109:20:111
92212700,5chrt0-21swapper/112:00:381
170699667,45cyclictest0-21swapper/111:00:141
1706996516,43cyclictest0-21swapper/111:05:221
1706996420,39cyclictest26-21ksoftirqd/112:09:001
170699639,41cyclictest0-21swapper/112:25:151
170699637,42cyclictest0-21swapper/109:30:131
1706996315,34cyclictest26-21ksoftirqd/108:20:141
1706996115,40cyclictest0-21swapper/107:20:171
1706996113,42cyclictest0-21swapper/109:10:341
170699599,11cyclictest0-21swapper/107:35:151
170699598,38cyclictest0-21swapper/107:30:151
1706995814,38cyclictest0-21swapper/111:50:121
1706995814,38cyclictest0-21swapper/111:50:121
1706995813,11cyclictest0-21swapper/110:45:211
1706995811,32cyclictest0-21swapper/111:25:151
1706995711,40cyclictest0-21swapper/110:35:231
170699569,34cyclictest0-21swapper/107:25:141
1706995613,38cyclictest0-21swapper/111:35:221
170699556,12cyclictest0-21swapper/111:55:131
170699552,42cyclictest151rcu_preempt10:00:451
1706995519,12cyclictest0-21swapper/108:45:181
148342550,8sleep10-21swapper/112:15:561
1706995438,11cyclictest0-21swapper/110:55:191
1706995429,20cyclictest448-21dbus-daemon09:50:001
1706995412,37cyclictest0-21swapper/108:05:331
1706995410,38cyclictest0-21swapper/110:52:201
170699538,34cyclictest0-21swapper/111:45:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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