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2025-07-19 - 07:06
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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 highest latencies:
System rack3slot6.osadl.org (updated Sat Jul 19, 2025 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1038210117,38sleep00-21swapper/019:09:050
94429029,49sleep10-21swapper/119:08:371
1256998345,30cyclictest0-21swapper/022:35:170
1256998149,18cyclictest4241-21apt-get22:20:150
1256998146,27cyclictest0-21swapper/022:30:170
1256998145,28cyclictest0-21swapper/000:00:140
1256998145,23cyclictest0-21swapper/000:10:180
1256998046,20cyclictest8594-21apt-get21:00:140
1256998045,28cyclictest0-21swapper/022:10:190
1263997932,38cyclictest26-21ksoftirqd/123:10:091
1256997950,21cyclictest13309-21apt-get22:45:240
1256997945,26cyclictest0-21swapper/022:50:120
1256997944,29cyclictest0-21swapper/022:05:150
1256997944,27cyclictest0-21swapper/000:25:150
1256997846,26cyclictest0-21swapper/021:30:130
1256997846,25cyclictest0-21swapper/020:15:120
1256997845,26cyclictest0-21swapper/023:00:130
1256997844,27cyclictest0-21swapper/019:35:170
1256997843,25cyclictest0-21swapper/021:35:160
1256997751,13cyclictest12125-21apt-get21:10:150
1256997751,13cyclictest12125-21apt-get21:10:150
1256997746,15cyclictest17358-21apt-get21:25:130
1256997645,26cyclictest0-21swapper/020:25:150
1256997645,25cyclictest0-21swapper/023:20:140
1256997645,23cyclictest0-21swapper/021:20:150
1256997645,22cyclictest7405-21apt-get19:25:240
1256997644,26cyclictest0-21swapper/023:25:130
1256997644,25cyclictest0-21swapper/020:00:130
1256997644,25cyclictest0-21swapper/020:00:130
1256997643,23cyclictest17911-21apt-get19:55:110
1256997643,18cyclictest0-21swapper/019:10:140
1256997642,29cyclictest0-21swapper/019:15:140
1256997642,20cyclictest0-21swapper/022:15:130
1263997526,42cyclictest22924-21cstates21:40:171
1256997553,11cyclictest29062-21apt-get23:30:140
1256997549,17cyclictest16174-21apt-get19:50:140
1256997547,15cyclictest3054-21apt-get20:45:140
1256997544,25cyclictest0-21swapper/021:05:130
1256997544,25cyclictest0-21swapper/000:05:180
1256997544,24cyclictest0-21swapper/020:10:130
1256997544,23cyclictest0-21swapper/020:20:150
1256997544,20cyclictest0-21swapper/000:15:130
1256997543,25cyclictest0-21swapper/019:45:130
1256997542,25cyclictest0-21swapper/023:15:150
1256997444,23cyclictest0-21swapper/023:50:160
1256997444,23cyclictest0-21swapper/019:20:180
1256997443,25cyclictest0-21swapper/022:55:160
1256997443,24cyclictest0-21swapper/023:05:140
1256997443,23cyclictest0-21swapper/020:30:150
1256997442,27cyclictest0-21swapper/023:10:100
1256997442,26cyclictest0-21swapper/021:55:130
1256997441,20cyclictest26133-21apt-get21:50:120
283362730,8chrt0-21swapper/123:25:361
1256997344,23cyclictest0-21swapper/000:30:150
1256997342,26cyclictest0-21swapper/000:35:150
1256997342,25cyclictest0-21swapper/020:55:140
1256997342,25cyclictest0-21swapper/020:40:140
1256997243,24cyclictest0-21swapper/023:40:240
1256997243,14cyclictest5708-21apt-get23:55:150
1256997242,19cyclictest0-21swapper/020:05:160
1263997132,35cyclictest36-21kcompactd020:40:261
1256997151,11cyclictest24398-21apt-get21:45:180
1256997151,11cyclictest24398-21apt-get21:45:180
1256997143,14cyclictest5098-21apt-get20:50:170
1256997141,20cyclictest0-21swapper/021:40:120
1263997038,23cyclictest27203-21kernelversion20:20:241
1263997036,24cyclictest30857-21aten2.4_r3power23:35:171
1263997034,27cyclictest30571-21timerandwakeup22:00:351
1256997043,15cyclictest5972-21apt-get22:25:110
1256997027,38cyclictest3370-21users23:45:370
1256997027,38cyclictest3370-21users23:45:370
1263996941,20cyclictest842-21aten2.4_r3power22:10:211
1263996940,24cyclictest16912-21seq00:25:221
1263996940,19cyclictest24263-21unixbench_multi20:10:351
1263996937,25cyclictest8591-21/usr/sbin/munin21:00:231
1263996936,24cyclictest7904-21unixbench_multi20:55:371
1263996936,24cyclictest16077-21unixbench-2d22:50:341
1263996935,24cyclictest16812-21aten2.4_r3power22:55:181
1263996933,26cyclictest3469-21timerwakeupswit22:15:351
1256996948,11cyclictest11270-21apt-get22:40:150
1256996942,14cyclictest0-21swapper/023:35:140
1256996932,24cyclictest0-21swapper/022:00:140
1263996840,23cyclictest20115-21idleruntime-cro23:05:001
1263996837,24cyclictest3223-21timerwakeupswit23:45:351
1263996837,24cyclictest3223-21timerwakeupswit23:45:351
1263996837,22cyclictest6574-21switchtime23:55:351
1263996837,22cyclictest13627-21timerandwakeup19:40:361
1263996837,21cyclictest17355-21/usr/sbin/munin21:25:321
1263996836,24cyclictest10327-21/usr/sbin/munin21:05:251
1263996835,25cyclictest3727-21aten2.4_r3power19:15:181
1263996835,25cyclictest1212-21awk23:40:391
1263996835,23cyclictest13881-21taskset22:45:361
1263996834,25cyclictest20969-21aten2.4_r3power21:35:191
1263996827,35cyclictest26204-21aten2.4_r3power21:50:171
1256996849,10cyclictest12701-21apt-get19:40:150
1256996844,13cyclictest9148-21apt-get19:30:130
1256996827,36cyclictest15428-21latency_hist21:20:010
1263996737,25cyclictest22146-21taskset20:05:311
1263996737,24cyclictest14351-21kernelversion21:15:241
1263996737,21cyclictest10958-21sessionclean22:39:011
1263996736,26cyclictest8609-21unixbench_singl00:00:371
1263996735,26cyclictest4477-21cpuspeed22:20:191
1263996735,25cyclictest11262-21ls19:35:251
1263996735,24cyclictest32471-21sed22:05:351
1263996733,25cyclictest29972-21find23:30:351
1263996733,25cyclictest20922-21switchtime00:35:361
1263996725,35cyclictest25167-21cpuspeed20:15:171
1256996745,12cyclictest31929-21apt-get20:35:170
1263996640,19cyclictest8501-21grep19:25:471
1263996639,17cyclictest630-21/usr/sbin/munin20:35:401
1263996638,23cyclictest4158-21unixbench_singl20:45:371
1263996638,23cyclictest19174-21cut21:30:161
1263996637,24cyclictest26187-21runrttasks23:20:271
1263996637,24cyclictest12839-21apt-get22:45:011
1263996636,19cyclictest2963-21munin-node19:15:021
1263996635,25cyclictest28700-21processes21:55:321
1263996635,24cyclictest25466-21unixbench_multi21:45:381
1263996635,24cyclictest25466-21unixbench_multi21:45:381
1263996635,23cyclictest9362-21aten2.4_r3power00:05:221
1263996634,27cyclictest261-21systemd-journal22:31:241
1263996630,26cyclictest15362-21latency00:20:361
1263996538,17cyclictest9148-21apt-get19:30:121
1263996536,24cyclictest5026-21tail23:50:381
1263996535,24cyclictest28823-21idleruntime20:25:241
1263996535,24cyclictest12867-21telnet00:15:171
1263996534,25cyclictest16657-21uname19:50:251
1263996534,24cyclictest18309-21/usr/sbin/munin00:30:241
1263996534,23cyclictest21178-21switchtime23:05:351
1256996528,16cyclictest14835-21apt-get00:20:150
1263996439,15cyclictest19480-21munin-run20:00:001
1263996438,17cyclictest5434-21aten2.4-expect19:20:201
1263996437,22cyclictest16156-21latency21:20:281
1263996437,21cyclictest6112-21aten2.4_r3power22:25:151
1263996437,18cyclictest5164-21aten2.4-expect20:50:201
1263996436,23cyclictest21239-21sh20:05:001
1263996436,23cyclictest21239-21sh20:05:001
1263996436,23cyclictest12600-21sh00:15:001
1263996434,25cyclictest12246-21aten2.4_r3power21:10:181
1263996434,25cyclictest12246-21aten2.4_r3power21:10:181
1263996433,25cyclictest30360-21cpu20:30:181
1263996337,17cyclictest24543-21ntp_offset23:15:301
1263996331,27cyclictest14587-21aten2.4_r3power19:45:161
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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