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2026-09-12 - 16:53
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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 rackdslot3.osadl.org (updated Sat Sep 12, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1755122450,8sleep20-21swapper/207:05:192
139491204170,23phc2sys0-21swapper/307:09:343
188012203171,22sleep00-21swapper/007:07:230
188592197163,22sleep10-21swapper/107:08:081
1853321640,5sleep31930799cyclictest11:35:183
118721520,6sleep21930699cyclictest11:00:152
1394918464,11phc2sys0-21swapper/307:10:013
134491840,1getstats0-21swapper/307:29:273
1930599680,22cyclictest6777-21cat12:20:001
139391660,1ptp4l401ktimersoftd/310:34:243
1930599650,23cyclictest24358-21cat09:35:001
1930599650,22cyclictest9236-21date12:25:001
1930599590,24cyclictest2397-21mailstats11:00:251
139391580,1ptp4l401ktimersoftd/308:02:543
136452580,3sleep0111rcuc/011:25:200
310312560,2sleep20-21swapper/212:00:242
139391550,1ptp4l401ktimersoftd/309:38:103
1930599541,23cyclictest25367-21chrt10:41:571
1930599540,22cyclictest31105-21taskset09:46:481
1930599540,22cyclictest22686-21taskset08:23:171
1930599530,20cyclictest21690-21seq09:28:261
1930599520,25cyclictest32554-21vmstat10:55:281
1930599490,24cyclictest0-21swapper/109:20:151
1930599480,22cyclictest28794-21chrt07:29:301
1930599461,21cyclictest11355-21chrt09:05:211
139391440,0ptp4l401ktimersoftd/310:16:123
139391440,0ptp4l401ktimersoftd/309:16:463
1930599430,21cyclictest352-21/usr/sbin/munin08:45:201
139391430,1ptp4l401ktimersoftd/309:12:453
134491430,1getstats0-21swapper/307:34:263
1930599411,23cyclictest26462-21chrt07:24:521
1930599410,25cyclictest1954-21chrt07:40:161
1930599410,25cyclictest1954-21chrt07:40:161
1930599410,22cyclictest3966-21chrt12:10:341
1930599401,23cyclictest31921-21df_abs09:50:181
1930599400,24cyclictest25479-21chrt08:30:071
1930599391,23cyclictest9986-21sed09:05:011
1930599391,21cyclictest7046-21timerwakeupswit08:55:261
139391390,1ptp4l401ktimersoftd/311:20:423
1930599381,26cyclictest0-21swapper/107:32:581
139391380,1ptp4l401ktimersoftd/309:44:133
139391380,0ptp4l401ktimersoftd/310:35:143
19307993732,3cyclictest17405-21cron11:35:003
19306993730,5cyclictest33-21ksoftirqd/209:59:252
19305993731,4cyclictest25-21ksoftirqd/111:07:371
19305993731,4cyclictest25-21ksoftirqd/108:42:221
1930599371,26cyclictest0-21swapper/110:19:211
1930599370,23cyclictest29508-21sed10:50:191
1930599370,23cyclictest2909-21dpkg08:50:001
1930599370,23cyclictest2909-21dpkg08:50:001
1930599370,22cyclictest28780-21taskset09:42:201
19307993630,4cyclictest41-21ksoftirqd/311:15:403
19307993630,4cyclictest41-21ksoftirqd/310:08:253
19306993631,3cyclictest33-21ksoftirqd/212:10:142
19306993630,4cyclictest33-21ksoftirqd/211:26:182
19306993630,4cyclictest33-21ksoftirqd/210:38:572
19306993630,4cyclictest33-21ksoftirqd/209:36:142
19305993631,3cyclictest25-21ksoftirqd/110:22:111
19305993630,3cyclictest25-21ksoftirqd/112:05:001
1930599361,26cyclictest11223-21runrttasks12:27:121
19304993631,3cyclictest9-21ksoftirqd/012:10:000
19304993629,4cyclictest9-21ksoftirqd/008:30:130
19307993529,4cyclictest41-21ksoftirqd/310:51:453
19307993529,4cyclictest41-21ksoftirqd/310:10:333
19306993529,4cyclictest33-21ksoftirqd/212:33:182
19306993529,4cyclictest33-21ksoftirqd/211:22:252
19306993529,4cyclictest33-21ksoftirqd/211:08:532
19306993529,4cyclictest33-21ksoftirqd/207:43:592
19306993529,4cyclictest33-21ksoftirqd/207:43:592
19306993528,5cyclictest33-21ksoftirqd/210:51:042
19306993528,5cyclictest33-21ksoftirqd/208:52:032
19306993528,5cyclictest33-21ksoftirqd/208:52:022
19305993529,4cyclictest25-21ksoftirqd/111:15:021
1930599351,20cyclictest18009-21df_abs11:35:141
1930599351,20cyclictest0-21swapper/109:36:081
1930599350,20cyclictest30003-21chrt08:37:371
19304993530,3cyclictest9-21ksoftirqd/010:30:150
19304993528,4cyclictest32575-21cron08:44:590
19307993429,3cyclictest41-21ksoftirqd/307:35:133
19307993428,4cyclictest41-21ksoftirqd/312:18:023
19307993428,4cyclictest41-21ksoftirqd/311:48:223
19307993428,4cyclictest41-21ksoftirqd/310:56:393
19307993428,4cyclictest41-21ksoftirqd/308:28:213
19306993429,3cyclictest33-21ksoftirqd/207:15:032
19306993428,4cyclictest33-21ksoftirqd/212:22:032
19306993428,4cyclictest33-21ksoftirqd/210:34:152
19306993428,4cyclictest33-21ksoftirqd/209:48:222
19306993428,4cyclictest33-21ksoftirqd/209:07:062
19305993428,4cyclictest25-21ksoftirqd/111:32:311
1930599341,16cyclictest0-21swapper/107:45:211
1930599341,16cyclictest0-21swapper/107:45:201
19304993429,3cyclictest9-21ksoftirqd/011:31:580
19304993426,4cyclictest9-21ksoftirqd/009:45:120
19307993328,3cyclictest41-21ksoftirqd/312:36:043
19307993327,4cyclictest41-21ksoftirqd/311:11:113
19307993327,4cyclictest41-21ksoftirqd/310:42:113
19307993327,4cyclictest41-21ksoftirqd/309:28:053
19307993326,5cyclictest41-21ksoftirqd/312:09:363
19306993328,3cyclictest33-21ksoftirqd/210:55:502
19306993327,4cyclictest33-21ksoftirqd/210:19:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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