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2026-08-08 - 16:23
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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 Aug 08, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491203147,45phc2sys0-21swapper/307:05:593
172102198163,23sleep00-21swapper/007:08:540
170582198163,23sleep20-21swapper/207:06:552
172112196163,22sleep10-21swapper/107:08:551
1470821530,3sleep21759799cyclictest10:25:202
17596997317,54cyclictest0-21swapper/110:56:121
17596996617,47cyclictest0-21swapper/107:40:131
1759799651,62cyclictest13653-21kworker/2:211:05:322
1759799642,60cyclictest13653-21kworker/2:210:55:332
17596996411,51cyclictest0-21swapper/109:01:131
1759699630,61cyclictest0-21swapper/108:40:331
1759699609,49cyclictest0-21swapper/108:11:131
199122580,5sleep019916-21cpuspeed_turbos09:30:140
1759799577,11cyclictest18374-21sort09:25:182
1759699560,54cyclictest0-21swapper/109:40:531
1759699560,54cyclictest0-21swapper/109:40:531
1759799559,10cyclictest26300-21grep07:25:252
1759799558,7cyclictest26168-21processes11:55:262
1759799558,16cyclictest24259-21taskset07:21:192
1759699559,44cyclictest0-21swapper/110:10:531
139391540,46ptp4l0-21swapper/307:10:003
139391540,1ptp4l401ktimersoftd/309:39:213
1759799539,8cyclictest16618-21ssh11:35:282
17595995323,5cyclictest9-21ksoftirqd/011:43:430
1759699510,49cyclictest0-21swapper/108:35:531
1759799487,7cyclictest31770-21apt-get12:10:012
17596994815,32cyclictest0-21swapper/108:16:131
1759699480,47cyclictest0-21swapper/110:50:321
1759699470,45cyclictest0-21swapper/111:16:241
1759599456,8cyclictest0-21swapper/010:25:120
1759599450,6cyclictest26080-21cut10:50:140
1759799447,16cyclictest1300-21snmpd12:24:502
1759799446,7cyclictest1300-21snmpd07:52:432
17596994415,28cyclictest0-21swapper/108:20:431
139391440,1ptp4l401ktimersoftd/311:55:183
17596994336,4cyclictest3822-21latency_hist10:05:001
139391420,0ptp4l401ktimersoftd/311:41:483
1759699410,1cyclictest0-21swapper/111:50:531
1759599410,7cyclictest9-21ksoftirqd/010:00:100
139391410,0ptp4l401ktimersoftd/310:45:203
17596994010,29cyclictest0-21swapper/107:20:441
1759599405,7cyclictest9-21ksoftirqd/007:45:140
1759599401,5cyclictest9-21ksoftirqd/008:50:250
139391400,0ptp4l401ktimersoftd/310:05:303
17596993933,3cyclictest11700-21sh12:35:011
17596993933,3cyclictest11700-21sh12:35:011
17596993926,11cyclictest25-21ksoftirqd/110:05:081
1759699390,38cyclictest0-21swapper/110:45:321
17595993933,4cyclictest9-21ksoftirqd/007:30:010
1759599391,5cyclictest9-21ksoftirqd/007:40:150
1759599390,5cyclictest9-21ksoftirqd/008:21:200
1759799387,10cyclictest0-21swapper/210:14:332
1759799382,19cyclictest20856-21kworker/2:112:09:252
17596993831,4cyclictest25-21ksoftirqd/109:55:311
1759599384,15cyclictest15121-21tr09:20:140
1759599383,6cyclictest9-21ksoftirqd/012:25:260
1759599383,6cyclictest9-21ksoftirqd/011:00:250
1759599382,5cyclictest101ktimersoftd/007:35:180
1759599381,6cyclictest9-21ksoftirqd/007:10:250
1759599381,5cyclictest9-21ksoftirqd/011:25:230
17595993812,3cyclictest9-21ksoftirqd/011:23:340
1759599380,5cyclictest0-21swapper/009:04:260
17598993732,3cyclictest41-21ksoftirqd/311:10:013
17598993730,5cyclictest41-21ksoftirqd/310:22:413
17597993731,4cyclictest33-21ksoftirqd/209:13:522
17596993731,4cyclictest25-21ksoftirqd/107:57:451
1759699370,36cyclictest0-21swapper/107:17:131
1759599371,4cyclictest0-21swapper/010:33:120
139391370,0ptp4l401ktimersoftd/308:10:183
17598993630,4cyclictest41-21ksoftirqd/312:20:513
1759799369,11cyclictest27166-21/usr/sbin/munin07:30:192
1759799367,15cyclictest7192-21/usr/sbin/munin12:25:282
17597993630,4cyclictest33-21ksoftirqd/209:34:132
1759699368,26cyclictest0-21swapper/107:45:231
1759599364,8cyclictest9-21ksoftirqd/009:10:250
1759599363,7cyclictest9-21ksoftirqd/011:36:160
17595993631,3cyclictest9-21ksoftirqd/008:10:200
17595993630,4cyclictest9-21ksoftirqd/010:10:500
1759599362,4cyclictest9-21ksoftirqd/011:52:440
1759599360,5cyclictest9-21ksoftirqd/011:10:220
17598993530,3cyclictest41-21ksoftirqd/311:00:123
17598993529,4cyclictest41-21ksoftirqd/312:35:383
17598993529,4cyclictest41-21ksoftirqd/312:34:393
17598993529,4cyclictest41-21ksoftirqd/312:34:383
17598993529,4cyclictest41-21ksoftirqd/312:26:043
17598993529,4cyclictest41-21ksoftirqd/311:14:033
17598993529,4cyclictest41-21ksoftirqd/309:56:583
17598993529,4cyclictest41-21ksoftirqd/307:57:473
17598993528,4cyclictest41-21ksoftirqd/308:22:513
1759799359,15cyclictest207-21systemd-journal08:37:542
1759799358,15cyclictest1300-21snmpd11:28:242
1759799356,28cyclictest619-21kworker/2:108:50:322
17597993530,3cyclictest14714-21cron09:24:552
17597993529,4cyclictest33-21ksoftirqd/211:04:322
17597993529,4cyclictest33-21ksoftirqd/209:05:492
17597993529,4cyclictest33-21ksoftirqd/209:01:402
17596993530,3cyclictest25-21ksoftirqd/112:35:121
17596993529,4cyclictest25-21ksoftirqd/111:26:291
17596993529,4cyclictest25-21ksoftirqd/107:50:551
17596993528,4cyclictest25-21ksoftirqd/110:28:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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