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2025-12-16 - 20:00
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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 Tue Dec 16, 2025 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
971221100,5chrt9331-21/usr/sbin/munin07:25:331
3205999821,20cyclictest0-21swapper/012:05:140
3205999513,19cyclictest0-21swapper/010:45:140
3205999318,18cyclictest0-21swapper/009:10:130
265329324,25sleep00-21swapper/007:06:100
3205999215,21cyclictest0-21swapper/012:35:110
228829251,29sleep10-21swapper/107:05:261
321099917,26cyclictest30550-21apt-get11:25:161
3205999118,18cyclictest0-21swapper/008:10:130
321099886,22cyclictest30506-21apt-get09:55:141
321099886,22cyclictest30506-21apt-get09:55:141
3205998815,23cyclictest23182-21apt-get09:35:140
3210998738,34cyclictest26-21ksoftirqd/110:45:131
320599877,28cyclictest0-21swapper/011:25:170
321099826,20cyclictest25558-21apt-get08:10:131
3205998215,25cyclictest0-21swapper/012:30:140
3205998056,14cyclictest0-21swapper/011:00:120
321099786,20cyclictest21505-21apt-get12:30:131
321099785,21cyclictest8875-21apt-get08:55:141
3210997827,15cyclictest11566-21sed09:00:351
3210997821,18cyclictest12256-21cron12:05:001
320599789,31cyclictest8880-21taskset08:55:140
3205997861,9cyclictest14-21ksoftirqd/007:10:150
321099773,28cyclictest13993-21diskmemload09:10:151
3210997718,20cyclictest448-21dbus-daemon09:09:001
3210997627,15cyclictest22146-21sed09:30:371
3210997623,19cyclictest448-21dbus-daemon09:30:001
3210997529,14cyclictest10650-21apt-get10:30:121
321099752,15cyclictest23043-21sh11:09:561
3210997518,17cyclictest6111-21grep08:45:291
3210997420,15cyclictest13267-21cut12:05:331
3205997416,52cyclictest0-21swapper/010:50:130
3210997321,15cyclictest2121-21wc08:35:191
3210997321,15cyclictest2121-21wc08:35:191
3210997321,13cyclictest23946-21open_files09:35:441
3210997321,13cyclictest23676-21latency_hist08:05:011
321099727,22cyclictest23240-21apt-get12:35:111
3210997218,18cyclictest32540-21gdbus10:00:051
3210997120,14cyclictest2521-21head10:05:291
3205997115,50cyclictest0-21swapper/012:00:140
3210997019,15cyclictest6327-21/usr/sbin/munin10:15:361
3205997013,16cyclictest0-21swapper/011:50:150
3205997012,51cyclictest0-21swapper/008:20:140
3210996928,8cyclictest0-21swapper/109:20:131
3210996923,13cyclictest27858-21processes11:15:341
3210996921,15cyclictest18197-21seq07:48:211
3210996822,14cyclictest9150-21sort10:25:201
3210996822,14cyclictest24087-21expr08:05:191
3210996820,15cyclictest6791-21seq11:47:401
3210996819,17cyclictest28861-21cron08:20:001
320599686,21cyclictest32286-21apt-get11:30:150
3205996840,20cyclictest14-21ksoftirqd/011:55:160
3205996838,17cyclictest0-21swapper/011:40:130
3205996814,49cyclictest0-21swapper/011:35:150
3205996814,49cyclictest0-21swapper/011:35:150
3210996716,14cyclictest26-21ksoftirqd/107:15:021
3210996623,15cyclictest14527-31find07:37:271
3205996637,15cyclictest0-21swapper/007:55:150
188826519,24sleep00-21swapper/010:05:160
321099643,17cyclictest17598-21cat12:20:011
3210996428,8cyclictest26-21ksoftirqd/112:22:101
3205996435,18cyclictest14-21ksoftirqd/007:30:260
3205996433,27cyclictest14-21ksoftirqd/011:05:290
3210996322,24cyclictest20099-21cron07:55:001
3205996339,19cyclictest14-21ksoftirqd/007:15:320
3205996334,16cyclictest0-21swapper/010:20:140
3205996330,9cyclictest14-21ksoftirqd/009:30:380
3205996323,35cyclictest7329-21aten2.4-expect07:20:160
3205996236,15cyclictest0-21swapper/008:00:130
3205996210,46cyclictest36-21kcompactd010:35:160
3205996140,17cyclictest14-21ksoftirqd/007:40:150
320599613,53cyclictest9375-21runrttasks10:25:250
3205996134,16cyclictest14-21ksoftirqd/007:45:160
321099603,18cyclictest4353-21netstat10:10:271
3205996041,11cyclictest0-21swapper/012:20:120
3205996032,23cyclictest14-21ksoftirqd/010:30:150
3205996032,19cyclictest448-21dbus-daemon12:30:000
3205996032,17cyclictest0-21swapper/009:50:120
3205996032,16cyclictest0-21swapper/010:55:130
3205996022,32cyclictest27457-21aten2.4-expect08:15:190
3205995936,16cyclictest14-21ksoftirqd/011:15:140
3205995920,34cyclictest250-21systemd-journal10:44:050
164922590,5chrt251rcuc/109:15:281
3205995837,17cyclictest14-21ksoftirqd/012:14:200
3205995832,21cyclictest14-21ksoftirqd/010:20:000
3205995828,11cyclictest14-21ksoftirqd/009:16:070
42082570,6sleep0171rcuc/008:40:250
3210995719,13cyclictest26-21ksoftirqd/108:00:001
3210995715,14cyclictest10494-21sh12:00:001
320599574,47cyclictest25653-21diskstats11:10:220
3205995732,14cyclictest17536-21munin-run12:20:010
3205995731,20cyclictest14-21ksoftirqd/007:35:420
320599564,25cyclictest12070-21taskset09:03:460
3205995633,15cyclictest9335-21apt-get07:25:140
3205995625,26cyclictest0-21swapper/009:40:470
3205995615,34cyclictest0-21swapper/010:10:130
3205995613,34cyclictest0-21swapper/009:45:140
3205995611,37cyclictest250-21systemd-journal08:48:440
3205995539,12cyclictest250-21systemd-journal08:39:550
3205995539,12cyclictest250-21systemd-journal08:39:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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