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2026-03-26 - 17:52
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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 Thu Mar 26, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194312231166,21sleep00-21swapper/007:08:420
193752220193,18sleep10-21swapper/107:07:591
194092206172,23sleep30-21swapper/307:08:253
192672205171,23sleep20-21swapper/207:06:352
880321670,7sleep11983099cyclictest08:55:251
214921380,6sleep21983199cyclictest07:40:002
2963021340,6sleep21983199cyclictest08:35:012
799421320,5sleep11983099cyclictest11:05:271
2596121280,2sleep21983199cyclictest09:30:242
1983099669,17cyclictest4638-21/usr/sbin/munin09:55:111
19830996211,10cyclictest1433-21sed08:40:251
19830996210,17cyclictest5933-21ls11:00:251
19830996111,10cyclictest30887-21cat10:45:261
19830996110,18cyclictest12328-21df_abs11:15:141
1983099609,10cyclictest2139-21cpuspeed_turbos12:00:131
1983099607,16cyclictest0-21swapper/111:35:201
19830996011,10cyclictest15076-21expr09:10:121
1983099599,12cyclictest18503-21ls11:25:261
1983099599,10cyclictest24554-21date09:30:001
19830995912,9cyclictest5045-21expr07:45:141
1983099588,16cyclictest2216-21apt-get08:45:121
1983099569,14cyclictest12106-21apt-get09:05:111
1983099559,11cyclictest21462-21sed08:15:271
1983099558,17cyclictest0-21swapper/112:10:191
1983099558,16cyclictest12022-21apt-get10:10:101
1983099558,13cyclictest29486-21apt-get11:50:101
1983099558,13cyclictest29486-21apt-get11:50:101
1983099549,10cyclictest2777-21/usr/sbin/munin07:40:141
19830995310,9cyclictest26256-21timerandwakeup09:30:271
1983099525,10cyclictest17211-21cstates10:20:121
1983099510,11cyclictest14463-21/usr/sbin/munin10:15:251
36972500,1sleep00-21swapper/012:00:260
138491500,1ptp4l401ktimersoftd/311:00:183
1983099499,8cyclictest18836-21ls12:30:261
1983099480,10cyclictest10093-21df_abs09:00:131
1983099479,8cyclictest11433-21python07:55:231
19830994712,7cyclictest25819-21meminfo08:25:201
19830994711,14cyclictest27750-21iostat11:45:181
19830994710,8cyclictest25325-21irqstats10:35:181
138491470,1ptp4l401ktimersoftd/308:02:503
19831994625,4cyclictest33-21ksoftirqd/209:17:582
19831994624,4cyclictest33-21ksoftirqd/209:43:582
1983099469,8cyclictest22593-21iostat10:30:181
19830994510,8cyclictest6553-21users08:50:271
19831994424,3cyclictest33-21ksoftirqd/210:20:102
19831994416,27cyclictest0-21swapper/211:30:332
1983199440,42cyclictest0-21swapper/211:00:242
1983099423,9cyclictest20153-21irqrtprio10:25:171
19829994236,3cyclictest9-21ksoftirqd/012:00:000
1385914232,4phc2sys0-21swapper/307:10:013
138491420,6ptp4l401ktimersoftd/310:01:253
138491420,0ptp4l401ktimersoftd/310:34:223
19829994136,3cyclictest9-21ksoftirqd/008:15:000
138491410,0ptp4l401ktimersoftd/309:55:463
134991410,6getstats1983299cyclictest11:06:283
19829994035,3cyclictest9-21ksoftirqd/009:35:010
19829994035,3cyclictest9-21ksoftirqd/007:40:010
138491400,0ptp4l401ktimersoftd/310:50:003
138491400,0ptp4l401ktimersoftd/310:05:253
19829993934,3cyclictest9-21ksoftirqd/010:00:010
19829993834,2cyclictest9-21ksoftirqd/012:15:000
19829993833,3cyclictest9-21ksoftirqd/010:35:000
19829993833,3cyclictest9-21ksoftirqd/009:45:000
19829993833,3cyclictest9-21ksoftirqd/008:40:000
19829993833,3cyclictest9-21ksoftirqd/007:35:010
19829993833,3cyclictest9-21ksoftirqd/007:35:010
19829993832,3cyclictest9-21ksoftirqd/009:55:000
1982999381,34cyclictest19075-21cron11:30:000
138491380,0ptp4l401ktimersoftd/307:39:513
19832993731,4cyclictest41-21ksoftirqd/311:53:153
19832993731,4cyclictest41-21ksoftirqd/311:53:153
19830993731,4cyclictest25-21ksoftirqd/111:42:091
19829993733,2cyclictest9-21ksoftirqd/008:20:130
19829993732,3cyclictest9-21ksoftirqd/012:35:180
19829993732,3cyclictest9-21ksoftirqd/010:45:000
50798360,2rtkit-daemon0-21swapper/008:35:010
19832993630,4cyclictest41-21ksoftirqd/312:35:023
19832993630,4cyclictest41-21ksoftirqd/308:57:153
19832993630,4cyclictest41-21ksoftirqd/308:16:593
19831993631,3cyclictest33-21ksoftirqd/208:45:002
19831993630,4cyclictest33-21ksoftirqd/211:53:182
19831993630,4cyclictest33-21ksoftirqd/211:53:182
19831993630,4cyclictest33-21ksoftirqd/211:44:392
19831993630,3cyclictest33-21ksoftirqd/209:02:512
19831993629,4cyclictest33-21ksoftirqd/207:15:332
19830993631,3cyclictest25-21ksoftirqd/108:15:011
19830993630,4cyclictest25-21ksoftirqd/107:30:081
19830993630,4cyclictest25-21ksoftirqd/107:30:081
19829993632,2cyclictest9-21ksoftirqd/009:15:160
19829993632,2cyclictest9-21ksoftirqd/008:45:000
19829993631,3cyclictest9-21ksoftirqd/012:15:220
19829993631,3cyclictest9-21ksoftirqd/010:20:190
19829993631,3cyclictest9-21ksoftirqd/007:50:000
19829993630,4cyclictest9-21ksoftirqd/010:55:550
19832993530,3cyclictest41-21ksoftirqd/310:25:003
19832993530,3cyclictest41-21ksoftirqd/307:52:453
19832993529,4cyclictest41-21ksoftirqd/312:06:343
19832993529,4cyclictest41-21ksoftirqd/309:48:583
19832993529,4cyclictest41-21ksoftirqd/309:09:233
19832993529,4cyclictest41-21ksoftirqd/308:43:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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