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2026-03-26 - 11:36
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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 Mar 26, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133372203170,22sleep10-21swapper/119:06:411
134932202169,22sleep20-21swapper/219:08:432
134642202169,22sleep00-21swapper/019:08:200
133392202168,23sleep30-21swapper/319:06:433
1394918261,11phc2sys0-21swapper/319:10:003
139391650,2ptp4l401ktimersoftd/323:00:143
139391650,1ptp4l401ktimersoftd/321:24:313
13888996312,49cyclictest30316-21kworker/2:100:15:332
1388699625,16cyclictest0-21swapper/021:55:010
13886996010,10cyclictest29634-21grep21:55:250
279082590,3sleep01388699cyclictest00:09:130
1388699599,16cyclictest1654-21irqrtprio00:20:190
1388699584,16cyclictest0-21swapper/023:10:210
1388699564,15cyclictest0-21swapper/021:05:000
1388799540,1cyclictest0-21swapper/123:47:531
1388699547,15cyclictest32436-21if_enp1s020:55:170
1388699545,15cyclictest0-21swapper/021:40:180
1388699545,15cyclictest0-21swapper/000:00:220
1388699545,11cyclictest17653-21switchtime23:45:250
1388699544,16cyclictest0-21swapper/022:40:280
220832530,1sleep00-21swapper/020:35:010
1388699538,17cyclictest23507-21systemctl22:50:230
1388699528,15cyclictest8946-21latency_hist23:30:010
1388699526,15cyclictest3250-21/usr/sbin/munin00:25:220
1388699513,16cyclictest0-21swapper/019:20:250
13886995112,9cyclictest6872-21tr22:15:240
13886995112,9cyclictest6872-21tr22:15:240
1388699508,16cyclictest7254-21if_err_enp1s021:10:160
1388699507,7cyclictest9937-21kernelversion23:30:190
1388699497,7cyclictest24838-21switchtime19:30:250
1388699488,8cyclictest26909-21apt-get23:00:110
1388699488,8cyclictest10878-21lsb_release21:16:100
1388699486,7cyclictest22684-21ls19:25:250
1388699478,7cyclictest28098-21open_files20:45:190
1388699475,7cyclictest20928-21apt-get23:55:110
1388699468,7cyclictest19480-21iostat_ios21:35:180
1388699466,7cyclictest28275-21apt-config19:40:010
1388699466,7cyclictest13004-21ls23:35:260
1388699466,14cyclictest28251-21apt-get00:10:130
1388699464,16cyclictest0-21swapper/023:50:160
13887994516,27cyclictest0-21swapper/120:30:041
1388699458,7cyclictest5900-21df_inode20:00:140
1388699455,8cyclictest32086-21ps00:15:240
1388699453,16cyclictest0-21swapper/023:15:010
1388699448,7cyclictest26420-21iostat19:35:180
139391430,0ptp4l401ktimersoftd/320:30:303
1388699437,8cyclictest13922-21apt-get19:10:120
1388699437,7cyclictest25534-21ls22:55:180
1388699437,12cyclictest11705-21cstates21:20:130
1388699436,7cyclictest11806-21ls20:10:240
1388699435,7cyclictest31084-21ls20:50:260
139391420,0ptp4l401ktimersoftd/319:31:513
1388999421,38cyclictest23335-21cron21:45:003
1388799429,3cyclictest18461-21ls22:40:251
1388699426,7cyclictest18100-21ps20:25:190
1388699426,7cyclictest13899-21ps22:30:210
139391410,0ptp4l401ktimersoftd/319:38:233
1388699417,8cyclictest16105-21meminfo20:20:210
1388699405,7cyclictest9635-21ls00:35:250
1388699405,7cyclictest17576-21ps19:15:240
57898390,2rtkit-daemon0-21swapper/300:00:103
1388699396,13cyclictest25158-21if_enp4s020:40:160
1388699395,7cyclictest4934-21ps23:20:180
139391380,0ptp4l401ktimersoftd/322:02:593
13889993832,3cyclictest41-21ksoftirqd/323:26:103
13889993732,3cyclictest41-21ksoftirqd/323:00:003
13888993731,4cyclictest33-21ksoftirqd/221:39:582
13888993730,4cyclictest33-21ksoftirqd/222:45:592
13887993732,3cyclictest25-21ksoftirqd/119:30:011
13887993731,4cyclictest25-21ksoftirqd/121:28:091
57898360,7rtkit-daemon0-21swapper/319:24:173
13888993630,4cyclictest33-21ksoftirqd/221:00:002
13888993630,4cyclictest33-21ksoftirqd/200:36:402
1388899361,33cyclictest21925-21kworker/2:019:15:242
13888993613,20cyclictest5775-21expr20:00:132
13888993613,20cyclictest10200-21sed20:10:002
1388799368,26cyclictest0-21swapper/123:50:031
13887993630,4cyclictest25-21ksoftirqd/119:23:251
13887993629,4cyclictest25-21ksoftirqd/122:17:591
13887993629,4cyclictest25-21ksoftirqd/122:17:591
57898350,1rtkit-daemon0-21swapper/300:23:083
13889993530,3cyclictest41-21ksoftirqd/320:40:253
13889993530,3cyclictest41-21ksoftirqd/320:08:443
13889993530,3cyclictest41-21ksoftirqd/320:03:433
13889993529,4cyclictest41-21ksoftirqd/319:28:013
13889993529,4cyclictest41-21ksoftirqd/300:05:083
13889993528,4cyclictest41-21ksoftirqd/320:15:583
13888993529,4cyclictest33-21ksoftirqd/223:18:022
13888993529,4cyclictest33-21ksoftirqd/221:43:182
13888993529,4cyclictest33-21ksoftirqd/221:10:052
13888993528,4cyclictest33-21ksoftirqd/220:46:432
1388799356,27cyclictest0-21swapper/120:00:341
13887993529,4cyclictest25-21ksoftirqd/119:56:591
1388799350,1cyclictest0-21swapper/119:19:041
1388699358,7cyclictest14924-21memory21:25:210
57898340,5rtkit-daemon1451-21mactelnetd22:45:253
57898340,2rtkit-daemon0-21swapper/223:35:532
139391340,0ptp4l401ktimersoftd/322:40:233
13889993429,3cyclictest41-21ksoftirqd/323:20:073
13889993429,3cyclictest41-21ksoftirqd/320:45:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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