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2026-01-09 - 12:36
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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 rackdslot4.osadl.org (updated Fri Jan 09, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123072232167,21sleep20-21swapper/219:06:492
124952205171,23sleep30-21swapper/319:09:073
122502202169,22sleep10-21swapper/119:06:041
124352201167,22sleep00-21swapper/019:08:200
3174321400,7sleep11285899cyclictest21:55:251
653921310,2sleep01285799cyclictest23:15:220
1286099650,25cyclictest0-21swapper/321:20:323
138491630,1ptp4l10214-21/usr/sbin/munin22:20:173
300052620,2sleep00-21swapper/000:05:010
259102620,1sleep30-21swapper/320:40:173
1285799581,11cyclictest3982-21sed21:00:180
1285799577,10cyclictest13397-21sed00:35:120
219172540,1sleep00-21swapper/021:35:260
1285799544,9cyclictest3705-21irqrtprio23:10:170
1285799544,9cyclictest11863-21grep20:10:230
1285799543,9cyclictest3133-21tr00:15:150
1285799534,9cyclictest25531-21cstates20:40:130
1285799534,10cyclictest19011-21tr19:20:210
1286099524,21cyclictest0-21swapper/322:27:523
1285799524,9cyclictest4305-21grep22:05:240
62882510,1sleep10-21swapper/121:05:181
138491500,39ptp4l0-21swapper/319:10:013
317162490,2sleep20-21swapper/223:00:242
270182490,1sleep30-21swapper/322:50:273
1286099490,4cyclictest24660-21runrttasks21:41:253
1285799491,16cyclictest21759-21awk22:40:240
1285799491,10cyclictest26700-21grep22:50:240
1285799485,15cyclictest9269-21ls22:15:240
1285799485,11cyclictest18675-21latency22:35:190
1285799484,10cyclictest23105-21expr22:45:150
1285799473,9cyclictest30108-21latency_hist20:50:010
1285799471,16cyclictest7641-21latency_hist00:25:000
1285799471,11cyclictest17612-21/usr/sbin/munin23:40:170
1285799471,11cyclictest17612-21/usr/sbin/munin23:40:170
1285799452,14cyclictest17779-21latency_hist19:20:000
1285799451,15cyclictest20020-21latency_hist21:35:000
12857994511,17cyclictest15104-21latency_hist20:20:000
1285799451,10cyclictest14235-21sed22:25:250
138491440,0ptp4l401ktimersoftd/323:17:323
1285799441,7cyclictest24317-21ls21:40:230
138491430,0ptp4l401ktimersoftd/322:40:203
138491430,0ptp4l401ktimersoftd/320:50:413
138491430,0ptp4l401ktimersoftd/320:50:403
1285799433,7cyclictest20855-21hddtemp_smartct20:30:170
1285799432,17cyclictest10475-21expr23:25:140
1285799431,13cyclictest10228-21apt-get22:20:110
1285799430,8cyclictest0-21swapper/021:55:150
138491420,0ptp4l401ktimersoftd/300:40:003
12860994236,4cyclictest24760-21cron23:55:013
1286099420,39cyclictest5034-21cron22:10:003
12858994231,9cyclictest25-21ksoftirqd/123:53:071
1285799423,7cyclictest5860-21hddtemp_smartct22:10:150
1285799420,7cyclictest15336-21apt-get21:25:110
1285799414,7cyclictest6037-21perl21:05:160
1285799410,7cyclictest1823-21ls22:00:250
1285799410,7cyclictest1823-21ls22:00:250
50798400,4rtkit-daemon7921-21apt-get21:10:111
12858994031,7cyclictest25-21ksoftirqd/122:25:011
1285799401,15cyclictest10161-21latency_hist20:10:000
138491390,0ptp4l401ktimersoftd/322:10:253
12858993933,4cyclictest25-21ksoftirqd/123:39:591
12858993933,3cyclictest25-21ksoftirqd/122:50:131
12858993933,3cyclictest25-21ksoftirqd/122:10:001
12858993933,3cyclictest25-21ksoftirqd/120:40:001
1285799391,8cyclictest18535-21iostat_ios20:25:170
1285799391,12cyclictest30523-21df_abs19:45:140
1286099380,19cyclictest0-21swapper/321:30:183
12858993834,2cyclictest25-21ksoftirqd/100:34:591
12858993833,3cyclictest25-21ksoftirqd/123:05:011
12858993833,3cyclictest25-21ksoftirqd/120:00:011
1285799383,13cyclictest26196-21irqstats21:45:190
12860993731,4cyclictest41-21ksoftirqd/321:13:393
12860993731,4cyclictest41-21ksoftirqd/320:39:213
12860993731,4cyclictest41-21ksoftirqd/300:32:043
12860993731,4cyclictest41-21ksoftirqd/300:22:243
1285999378,27cyclictest0-21swapper/223:20:032
12858993733,3cyclictest25-21ksoftirqd/122:05:001
12858993733,3cyclictest25-21ksoftirqd/122:05:001
12858993732,3cyclictest25-21ksoftirqd/123:10:011
12858993732,3cyclictest25-21ksoftirqd/120:10:001
12858993732,3cyclictest25-21ksoftirqd/119:50:001
12858993726,9cyclictest25-21ksoftirqd/119:35:131
1285799374,13cyclictest23649-21memory23:50:200
1285799372,8cyclictest223-21systemd-journal19:59:590
12860993630,4cyclictest41-21ksoftirqd/322:38:183
12860993630,4cyclictest41-21ksoftirqd/321:27:273
12860993630,4cyclictest41-21ksoftirqd/320:56:183
12860993630,4cyclictest41-21ksoftirqd/300:07:563
12859993630,4cyclictest33-21ksoftirqd/220:43:532
12859993630,4cyclictest33-21ksoftirqd/219:52:462
12859993629,5cyclictest33-21ksoftirqd/219:45:402
12858993631,3cyclictest25-21ksoftirqd/123:20:001
12858993631,3cyclictest25-21ksoftirqd/122:39:591
12858993631,3cyclictest25-21ksoftirqd/121:39:591
12858993631,3cyclictest25-21ksoftirqd/120:25:001
12858993631,3cyclictest25-21ksoftirqd/120:20:001
12858993631,3cyclictest25-21ksoftirqd/119:35:001
12860993529,4cyclictest41-21ksoftirqd/323:05:393
12860993529,4cyclictest41-21ksoftirqd/322:48:533
12860993529,4cyclictest41-21ksoftirqd/320:21:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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