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2026-05-07 - 17:16
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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 Thu May 07, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
206962207172,23sleep30-21swapper/307:06:223
208102202168,23sleep00-21swapper/007:07:520
208892200167,22sleep20-21swapper/207:08:552
209602198165,22sleep10-21swapper/107:09:501
139391670,1ptp4l401ktimersoftd/312:35:183
2141999584,10cyclictest19760-21sed11:35:192
139391570,1ptp4l401ktimersoftd/310:02:013
2141999563,8cyclictest3511-21phc2sys11:00:222
2141999562,11cyclictest17534-21irqrtprio09:15:182
139391560,1ptp4l401ktimersoftd/311:30:213
2141999550,16cyclictest0-21swapper/212:15:232
2141999534,17cyclictest9569-21grep09:00:122
2141999533,17cyclictest15595-21egrep12:35:142
2141999533,11cyclictest29841-21latency_hist10:49:592
2141999530,17cyclictest0-21swapper/210:20:212
2141999523,17cyclictest14153-21date09:10:012
2141999523,17cyclictest14074-21cat10:15:212
2141999523,16cyclictest8278-21grep12:20:112
2141999523,11cyclictest4845-21cat08:50:122
2141999523,11cyclictest2920-21awk07:35:272
2141999513,17cyclictest5983-21/usr/sbin/munin07:45:112
2141999513,17cyclictest28357-21date11:55:002
2141999513,17cyclictest22142-21ls08:15:262
2141999513,17cyclictest207-21systemd-journal08:12:442
228952500,2sleep30-21swapper/307:10:233
2141999503,14cyclictest25305-21grep09:30:242
119222500,1sleep111926-21sort11:20:131
2141999493,7cyclictest9817-21diskstats11:15:152
21420994841,4cyclictest4443-21cron11:05:013
2141999483,16cyclictest13318-21/usr/sbin/munin08:00:242
2141999482,7cyclictest22868-21ls11:40:232
2141999472,8cyclictest16612-21apt-get11:30:112
2141999471,16cyclictest0-21swapper/210:41:582
2141999462,7cyclictest4699-21apt-get11:05:122
2141999452,7cyclictest23883-21apt-get07:15:102
2141999451,7cyclictest9387-21ls10:05:222
2141999451,13cyclictest0-21swapper/210:30:132
57898440,2rtkit-daemon577-21rtkit-daemon11:09:081
2141999443,7cyclictest22092-21iostat_ios09:25:172
2141999442,8cyclictest8772-21ls08:55:272
2141999442,8cyclictest28858-21apt-get07:25:112
2141999442,7cyclictest32375-21apt-get08:40:122
2141999433,8cyclictest24771-21meminfo11:45:192
2141999431,7cyclictest10660-21apt-get10:10:112
21418994338,3cyclictest1317-21runrttasks10:29:381
2141799431,40cyclictest30285-21sshd11:56:040
2141999422,8cyclictest22613-21ls07:10:212
2141999422,16cyclictest30870-21grep12:00:112
2141999421,8cyclictest29989-21apt-get08:35:112
2141999421,15cyclictest19330-21ls10:25:252
21420994133,4cyclictest7746-21cron12:20:003
2141999413,7cyclictest29126-21ssh08:30:252
2141999411,6cyclictest28478-21apt-get11:55:112
21418994136,3cyclictest25-21ksoftirqd/112:35:001
2141999402,7cyclictest3416-21ls08:45:202
2141999402,7cyclictest27271-21ls09:35:212
2141999401,15cyclictest1931-21ls12:05:212
21418994035,2cyclictest25-21ksoftirqd/108:40:001
21420993933,3cyclictest29740-21cron08:35:003
2141999392,7cyclictest7350-21df11:10:132
21418993933,4cyclictest25-21ksoftirqd/107:50:171
21418993933,3cyclictest25-21ksoftirqd/111:35:251
21418993933,3cyclictest25-21ksoftirqd/108:00:001
21418993932,4cyclictest25-21ksoftirqd/111:19:591
2142099381,34cyclictest17080-21fschecks_count09:15:143
2141999383,16cyclictest28550-21/usr/sbin/munin09:40:142
2141999382,7cyclictest26012-21apt-get07:20:032
2141999381,7cyclictest19719-21ps09:20:172
21418993833,3cyclictest25-21ksoftirqd/110:00:011
21418993833,3cyclictest25-21ksoftirqd/108:45:011
21418993832,4cyclictest25-21ksoftirqd/109:20:011
21418993832,3cyclictest25-21ksoftirqd/109:40:001
139391380,0ptp4l401ktimersoftd/308:06:403
21420993732,3cyclictest41-21ksoftirqd/310:40:013
2141999377,4cyclictest33-21ksoftirqd/209:14:482
21418993732,3cyclictest537-21sh12:05:011
21418993731,4cyclictest25-21ksoftirqd/112:28:301
21418993731,4cyclictest25-21ksoftirqd/108:51:391
21418993731,3cyclictest25-21ksoftirqd/110:50:181
21418993731,3cyclictest25-21ksoftirqd/110:19:591
21418993731,3cyclictest25-21ksoftirqd/107:20:011
21418993730,4cyclictest25-21ksoftirqd/110:45:501
21417993732,3cyclictest9-21ksoftirqd/011:35:010
21417993731,3cyclictest9-21ksoftirqd/011:40:010
21420993629,5cyclictest41-21ksoftirqd/311:41:043
21419993631,3cyclictest33-21ksoftirqd/208:07:432
21419993629,4cyclictest33-21ksoftirqd/209:49:152
21418993631,2cyclictest25-21ksoftirqd/108:25:001
21418993630,4cyclictest25-21ksoftirqd/110:30:111
21418993630,4cyclictest25-21ksoftirqd/109:30:461
21418993630,4cyclictest25-21ksoftirqd/109:25:161
21418993630,4cyclictest25-21ksoftirqd/107:48:121
21418993630,4cyclictest25-21ksoftirqd/107:41:381
21418993630,3cyclictest25-21ksoftirqd/108:55:131
21418993629,4cyclictest25-21ksoftirqd/107:32:241
21417993631,3cyclictest9-21ksoftirqd/009:00:000
139391360,0ptp4l401ktimersoftd/307:25:253
21420993530,3cyclictest41-21ksoftirqd/311:19:593
21420993529,4cyclictest41-21ksoftirqd/311:46:033
21420993529,4cyclictest41-21ksoftirqd/309:03:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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