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2025-12-11 - 13:46
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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 Dec 11, 2025 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198682215150,22sleep00-21swapper/019:09:000
197972205171,22sleep10-21swapper/119:08:061
137191204170,22phc2sys0-21swapper/319:08:183
197052198165,22sleep20-21swapper/219:06:532
1994428763,15sleep30-21swapper/319:10:013
2023799773,72cyclictest20480-21kworker/1:119:47:071
253432600,2sleep00-21swapper/022:40:210
2023699586,16cyclictest21217-21grep19:10:190
2023699574,10cyclictest0-21swapper/021:05:170
2023699554,15cyclictest0-21swapper/020:55:010
2023699553,16cyclictest0-21swapper/021:20:170
2023699533,17cyclictest0-21swapper/020:35:000
136991530,1ptp4l401ktimersoftd/319:40:213
2023699524,17cyclictest13663-21ls00:30:200
2023699506,7cyclictest31595-21apt-config22:55:010
2023699505,8cyclictest32233-21apt-get21:50:130
2023699501,17cyclictest0-21swapper/020:40:170
2023699496,9cyclictest8116-21sed23:10:270
2023699496,8cyclictest7086-21ls00:15:260
2023699496,10cyclictest9527-21cat22:10:000
2023699493,16cyclictest0-21swapper/021:45:120
20236994911,34cyclictest17783-21latency22:25:200
20236994911,16cyclictest13248-21phc2sys-jitter22:15:220
2023699477,8cyclictest28399-21fschecks_time23:55:140
2023699476,8cyclictest28208-21unixbench_singl22:45:270
2023699476,7cyclictest10929-21irqrtprio00:25:200
2023699474,15cyclictest0-21swapper/021:55:170
2023699473,15cyclictest0-21swapper/021:35:150
2023699466,16cyclictest31784-21cat00:00:250
2023699456,7cyclictest24818-21ls23:45:250
2023699456,7cyclictest10337-21hddtemp_smartct19:55:170
136991450,0ptp4l401ktimersoftd/323:59:333
2023799440,42cyclictest0-21swapper/123:06:061
2023699446,8cyclictest1723-21hddtemp_smartct20:45:160
2023699446,7cyclictest7047-21meminfo20:55:230
2023699446,7cyclictest22021-21df20:20:140
2023699445,7cyclictest6505-21ls22:00:270
2023699445,7cyclictest3944-21memory00:10:210
2023699441,15cyclictest0-21swapper/022:50:250
2023699436,8cyclictest25608-21threads20:25:280
2023699436,7cyclictest12868-21iostat20:00:200
2023699434,7cyclictest16966-21apt-get20:10:120
2023699431,15cyclictest0-21swapper/019:30:160
136991430,1ptp4l401ktimersoftd/321:47:023
2023699425,8cyclictest5420-21if_enp4s019:45:200
2023699425,7cyclictest28050-21iostat19:25:190
2023699425,7cyclictest1602-21sshd19:36:060
2023699424,7cyclictest1921-21apt-get19:40:020
136991420,1ptp4l401ktimersoftd/320:14:383
136991420,0ptp4l401ktimersoftd/323:24:583
2023699413,16cyclictest0-21swapper/023:30:210
136991410,0ptp4l401ktimersoftd/319:15:193
20237993918,20cyclictest0-21swapper/100:33:461
2023699393,7cyclictest19902-21ls23:35:250
59298380,6rtkit-daemon0-21swapper/221:30:512
20238993831,5cyclictest12959-21cron21:10:002
2023699386,14cyclictest3480-21users23:00:270
2023899377,28cyclictest0-21swapper/223:05:272
20237993730,5cyclictest25-21ksoftirqd/120:36:021
2023699374,15cyclictest21484-21latency_hist20:20:010
2023699373,8cyclictest4761-21iostat_ios23:05:200
2023699372,16cyclictest0-21swapper/021:10:150
136991370,0ptp4l401ktimersoftd/319:20:013
20239993629,5cyclictest41-21ksoftirqd/300:34:053
20238993632,3cyclictest33-21ksoftirqd/222:36:422
20238993630,4cyclictest33-21ksoftirqd/221:46:152
20238993630,4cyclictest33-21ksoftirqd/221:27:582
20238993629,5cyclictest33-21ksoftirqd/222:54:352
20238993629,5cyclictest33-21ksoftirqd/219:12:432
20238993629,4cyclictest11950-21cron20:00:002
136991360,13ptp4l401ktimersoftd/323:15:283
136991360,0ptp4l401ktimersoftd/300:39:093
20239993529,4cyclictest41-21ksoftirqd/323:54:103
20239993529,4cyclictest41-21ksoftirqd/323:13:503
20239993529,4cyclictest41-21ksoftirqd/322:46:583
20239993529,4cyclictest41-21ksoftirqd/321:14:313
20239993529,3cyclictest41-21ksoftirqd/321:18:573
20238993529,4cyclictest33-21ksoftirqd/223:27:452
20238993529,4cyclictest33-21ksoftirqd/222:18:532
20238993529,4cyclictest33-21ksoftirqd/221:18:352
20238993528,4cyclictest33-21ksoftirqd/220:00:082
20237993531,3cyclictest25-21ksoftirqd/119:21:021
20237993528,5cyclictest25-21ksoftirqd/100:02:341
2023699355,7cyclictest16115-21ls00:35:230
20236993529,4cyclictest9-21ksoftirqd/022:11:360
20239993429,3cyclictest41-21ksoftirqd/300:02:283
20239993428,4cyclictest41-21ksoftirqd/323:07:443
20239993428,4cyclictest41-21ksoftirqd/321:53:393
20239993428,4cyclictest41-21ksoftirqd/321:29:043
20239993428,4cyclictest41-21ksoftirqd/300:15:003
20239993427,5cyclictest41-21ksoftirqd/300:19:173
20239993427,5cyclictest41-21ksoftirqd/300:06:213
20238993428,4cyclictest33-21ksoftirqd/223:42:562
20238993428,4cyclictest33-21ksoftirqd/223:10:312
20238993428,4cyclictest33-21ksoftirqd/222:32:172
20238993428,4cyclictest33-21ksoftirqd/221:41:102
20238993428,4cyclictest33-21ksoftirqd/221:13:582
20238993427,4cyclictest33-21ksoftirqd/220:30:092
20238993427,4cyclictest33-21ksoftirqd/219:44:202
20237993428,4cyclictest25-21ksoftirqd/119:43:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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