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2026-08-02 - 22:04
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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 Sun Aug 02, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100742207173,22sleep30-21swapper/307:09:353
100322203169,22sleep10-21swapper/107:09:001
100432200168,21sleep20-21swapper/207:09:102
98732195162,22sleep00-21swapper/007:07:030
10401996327,4cyclictest9-21ksoftirqd/012:10:000
10401996232,4cyclictest9-21ksoftirqd/008:10:000
10401996132,4cyclictest9-21ksoftirqd/007:20:200
10401996130,6cyclictest9-21ksoftirqd/012:15:000
10401996126,3cyclictest9-21ksoftirqd/011:45:250
10401996122,7cyclictest9-21ksoftirqd/011:10:000
1040499603,16cyclictest0-21swapper/309:50:203
10401996027,5cyclictest9-21ksoftirqd/012:15:170
10401996026,7cyclictest9-21ksoftirqd/012:30:150
10401996024,4cyclictest9-21ksoftirqd/007:10:180
10401996021,5cyclictest9-21ksoftirqd/008:55:140
10401995931,3cyclictest9-21ksoftirqd/009:55:010
10401995928,4cyclictest9-21ksoftirqd/007:35:170
10401995926,5cyclictest9-21ksoftirqd/012:35:210
10401995924,6cyclictest9-21ksoftirqd/007:30:000
10401995922,6cyclictest9-21ksoftirqd/007:45:140
10401995921,5cyclictest9-21ksoftirqd/010:35:230
10401995921,5cyclictest9-21ksoftirqd/007:30:270
10401995920,7cyclictest9-21ksoftirqd/008:45:000
10401995920,6cyclictest9-21ksoftirqd/009:35:220
10401995919,6cyclictest9-21ksoftirqd/010:25:140
10401995919,6cyclictest9-21ksoftirqd/009:55:250
293292580,2sleep20-21swapper/208:50:252
1040499585,15cyclictest10525-21latency_hist11:30:003
10401995829,4cyclictest9-21ksoftirqd/012:20:130
10401995825,7cyclictest9-21ksoftirqd/009:05:240
10401995825,6cyclictest9-21ksoftirqd/008:40:000
10401995823,3cyclictest9-21ksoftirqd/007:55:190
10401995822,4cyclictest9-21ksoftirqd/012:00:150
10401995821,5cyclictest9-21ksoftirqd/011:20:220
10401995820,6cyclictest9-21ksoftirqd/010:05:150
10401995820,5cyclictest9-21ksoftirqd/007:50:170
10401995728,7cyclictest9-21ksoftirqd/011:35:270
10401995724,6cyclictest9-21ksoftirqd/012:25:150
10401995721,6cyclictest9-21ksoftirqd/011:50:160
10401995721,6cyclictest9-21ksoftirqd/007:40:110
10401995721,5cyclictest9-21ksoftirqd/008:00:170
10401995720,6cyclictest9-21ksoftirqd/011:00:240
10401995720,6cyclictest9-21ksoftirqd/010:40:190
10401995720,6cyclictest9-21ksoftirqd/009:10:240
10401995720,5cyclictest9-21ksoftirqd/011:40:190
10401995720,5cyclictest9-21ksoftirqd/010:45:240
10401995720,5cyclictest9-21ksoftirqd/008:30:230
10401995720,5cyclictest9-21ksoftirqd/007:15:220
10401995719,5cyclictest9-21ksoftirqd/010:55:240
138491560,1ptp4l13213-21/usr/sbin/munin11:35:243
1040499562,17cyclictest0-21swapper/310:10:143
10401995631,7cyclictest9-21ksoftirqd/009:25:010
10401995628,7cyclictest9-21ksoftirqd/008:45:120
10401995622,4cyclictest9-21ksoftirqd/011:25:130
10401995620,6cyclictest9-21ksoftirqd/010:15:160
10401995620,5cyclictest9-21ksoftirqd/011:30:240
10401995620,5cyclictest9-21ksoftirqd/011:15:140
10401995620,5cyclictest9-21ksoftirqd/011:10:270
10401995619,6cyclictest9-21ksoftirqd/008:15:220
10401995618,5cyclictest9-21ksoftirqd/010:20:240
10401995528,7cyclictest9-21ksoftirqd/009:40:140
10401995526,4cyclictest9-21ksoftirqd/008:20:090
10401995524,5cyclictest9-21ksoftirqd/009:00:240
10401995520,6cyclictest9-21ksoftirqd/008:50:140
10401995518,5cyclictest9-21ksoftirqd/010:10:230
10401995518,5cyclictest9-21ksoftirqd/009:45:240
10401995427,7cyclictest9-21ksoftirqd/009:20:000
10401995426,7cyclictest9-21ksoftirqd/009:25:130
10401995419,6cyclictest9-21ksoftirqd/010:30:150
10401995419,5cyclictest9-21ksoftirqd/009:30:140
10401995419,5cyclictest9-21ksoftirqd/008:25:290
164062530,2sleep10-21swapper/111:40:191
10401995320,7cyclictest9-21ksoftirqd/010:50:200
10401995319,7cyclictest9-21ksoftirqd/011:55:200
10401995319,5cyclictest9-21ksoftirqd/008:10:130
10401995318,5cyclictest9-21ksoftirqd/010:00:140
1040499527,17cyclictest15351-21/usr/sbin/munin07:20:213
1040499522,10cyclictest0-21swapper/308:00:013
1040499516,9cyclictest2315-21gnome-shell07:18:583
1040499505,7cyclictest3208-21apt-config11:15:013
111872490,2sleep30-21swapper/311:30:143
1040499495,15cyclictest8911-21cut12:30:183
1040499494,17cyclictest17788-21grep08:30:133
1040499486,15cyclictest2315-21gnome-shell08:40:593
10402994842,3cyclictest7785-21dump-pmu-power09:15:001
1040499476,8cyclictest2052-21meminfo10:05:193
1040499475,8cyclictest6728-21ls12:25:213
1040499467,16cyclictest32766-21/usr/sbin/munin09:00:193
138491440,0ptp4l401ktimersoftd/311:11:383
138491440,0ptp4l401ktimersoftd/307:45:023
1040499445,7cyclictest11893-21mailstats07:10:253
1040499445,17cyclictest8376-21/usr/sbin/munin10:20:273
1040499443,15cyclictest21352-21ps11:50:213
10404994424,4cyclictest41-21ksoftirqd/310:55:013
138491430,0ptp4l401ktimersoftd/312:04:453
138491430,0ptp4l401ktimersoftd/311:40:233
1040499434,8cyclictest6518-21awk11:20:173
1040499434,7cyclictest11929-21grep08:15:243
10404994328,13cyclictest17486-21cron08:30:003
1040499430,40cyclictest15030-21cron08:25:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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