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2026-08-05 - 10:29
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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 Aug 05, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
188129730,23sleep10-21swapper/119:06:161
2429999274,13cyclictest26-21ksoftirqd/123:30:011
114328729,47sleep00-21swapper/019:05:230
32282820,8sleep014-21ksoftirqd/019:10:300
2429997965,9cyclictest251rcuc/121:15:291
2429997647,18cyclictest26-21ksoftirqd/121:25:111
2429997551,15cyclictest20831-21apt-get20:00:151
2429997342,21cyclictest21752-21apt-get23:05:141
2429997319,47cyclictest16038-21runrttasks00:15:391
242499726,11cyclictest0-21swapper/019:35:120
90912700,6sleep0171rcuc/000:00:000
2429997039,20cyclictest4205-21apt-get20:45:111
242499706,56cyclictest22570-21apt-get20:05:130
242499706,23cyclictest14-21ksoftirqd/022:40:000
2429996913,48cyclictest4082-21idleruntime-cro22:15:011
2429996842,13cyclictest18987-21apt-get00:25:251
2429996838,21cyclictest11492-21apt-get21:05:151
2429996837,21cyclictest11224-21apt-get22:35:141
2429996834,20cyclictest1465-21apt-get23:37:231
2429996814,25cyclictest27436-21awk21:50:011
2429996743,14cyclictest26-21ksoftirqd/120:15:131
2429996714,28cyclictest13845-21cat21:10:281
2429996713,21cyclictest0-21swapper/122:09:011
2429996713,21cyclictest0-21swapper/122:09:011
2424996713,27cyclictest151rcu_preempt20:30:040
2429996640,15cyclictest31342-21apt-get20:30:151
2429996639,13cyclictest9482-21apt-get22:30:141
2429996639,13cyclictest20567-21apt-get21:30:131
2429996637,20cyclictest17086-21apt-get21:20:141
2429996616,20cyclictest15121-21apt-get19:45:141
2429996615,25cyclictest18590-21apt-key00:25:021
2429996614,20cyclictest0-21swapper/100:00:351
2429996613,28cyclictest25146-21grep20:10:331
2429996613,28cyclictest25146-21grep20:10:331
2429996612,30cyclictest5317-21awk23:50:001
242999654,12cyclictest15121-21apt19:45:011
2429996540,14cyclictest30815-21apt-get23:30:231
2429996539,13cyclictest4241-21apt-get22:15:131
2429996539,13cyclictest22312-21apt-get21:35:151
2429996532,19cyclictest1994-21apt-get23:40:131
2429996516,24cyclictest10834-21ps19:30:331
2429996515,25cyclictest7051-21apt-get23:55:151
2429996514,20cyclictest0-21swapper/122:20:221
2429996513,27cyclictest18914-21idleruntime-cro19:55:001
2429996513,21cyclictest0-21swapper/123:12:101
2429996513,20cyclictest0-21swapper/123:15:251
2429996513,20cyclictest0-21swapper/122:40:191
2429996511,30cyclictest9171-21awk19:25:361
2429996511,25cyclictest8485-21ntp_states22:25:331
242999645,53cyclictest0-21swapper/119:55:171
2429996436,13cyclictest2495-21apt-get19:10:141
2429996435,20cyclictest562-21runrttasks23:00:141
2429996430,19cyclictest16506-21apt-get22:50:141
2429996415,25cyclictest2499-21basename20:40:181
2429996415,21cyclictest12762-21unixbench-2d19:35:361
2429996415,20cyclictest22284-21cron00:35:001
2429996415,20cyclictest22284-21cron00:35:001
2429996413,21cyclictest24732-21tr21:40:281
2429996413,21cyclictest0-21swapper/123:50:111
2429996413,21cyclictest0-21swapper/100:35:161
2429996413,20cyclictest0-21swapper/123:20:121
2429996413,20cyclictest0-21swapper/122:45:311
2429996413,20cyclictest0-21swapper/100:10:021
2429996412,22cyclictest0-21swapper/119:15:081
2429996412,21cyclictest0-21swapper/100:05:331
2429996412,20cyclictest0-21swapper/122:57:181
242499648,26cyclictest6515-21/usr/sbin/munin19:20:240
2429996338,13cyclictest5953-21apt-get20:50:161
2429996331,18cyclictest7690-21apt-get20:55:181
2429996330,21cyclictest27589-21apt-get21:50:121
2429996314,25cyclictest2335-21latency_hist20:40:011
2429996314,19cyclictest0-21swapper/120:25:251
2429996313,20cyclictest0-21swapper/122:00:241
2429996313,19cyclictest0-21swapper/121:00:241
2429996312,21cyclictest0-21swapper/121:55:311
2429996237,12cyclictest6518-21apt-get19:20:151
2429996214,21cyclictest23181-21needreboot20:05:271
2429996213,18cyclictest0-21swapper/120:20:181
246752619,10sleep00-21swapper/020:10:210
246752619,10sleep00-21swapper/020:10:210
242499616,23cyclictest14-21ksoftirqd/020:25:390
2424996134,23cyclictest14-21ksoftirqd/021:00:380
2424996113,18cyclictest171rcuc/022:48:170
2424996110,23cyclictest20177-21runrttasks00:26:020
2424996038,17cyclictest14-21ksoftirqd/023:10:180
2424996034,20cyclictest5305-21grep20:45:340
2424996026,15cyclictest14-21ksoftirqd/020:15:290
242499596,45cyclictest0-21swapper/019:40:170
242499596,24cyclictest14-21ksoftirqd/000:34:340
242499596,24cyclictest14-21ksoftirqd/000:34:340
242499594,24cyclictest14-21ksoftirqd/022:10:010
242499594,24cyclictest14-21ksoftirqd/022:10:010
242499586,23cyclictest14-21ksoftirqd/019:25:270
2424995812,21cyclictest171rcuc/021:20:110
2424995811,7cyclictest151rcu_preempt00:00:040
242499575,22cyclictest14-21ksoftirqd/023:05:250
242499572,49cyclictest7195-21cat23:55:020
2424995722,30cyclictest11857-21ls21:05:240
242499566,44cyclictest0-21swapper/022:15:290
242499564,24cyclictest14-21ksoftirqd/000:19:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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