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2026-03-25 - 10:11
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Wed Mar 25, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281629623580,10sleep10-21swapper/119:05:311
28166662319279,26sleep00-21swapper/019:06:450
281711699652,44cyclictest2990066-21appstreamcli00:05:050
281711699642,37cyclictest2869447-21apt-get21:15:290
179699640,4rtkit-daemon1795-21rtkit-daemon00:16:280
281711699612,39cyclictest2887479-21apt-get21:40:130
281711699592,39cyclictest2930290-21apt-get22:40:130
281711699592,39cyclictest2930290-21apt-get22:40:130
281711699570,3cyclictest2854110-21strings20:40:200
281711699570,2cyclictest2832581-21grep19:45:200
179699570,5rtkit-daemon1795-21rtkit-daemon21:25:110
281711699558,35cyclictest2965693-21cat23:30:190
281711699550,7cyclictest3002214-21sh00:24:190
281711699540,3cyclictest0-21swapper/021:49:150
281711699538,28cyclictest2873783-21sed21:20:190
281711699531,28cyclictest2936907-21/usr/sbin/munin22:50:000
281711699530,6cyclictest2901305-21ssh21:59:590
281711699530,3cyclictest2834902-21grep19:50:230
281711699529,27cyclictest2823493-21seq19:20:550
281711699528,26cyclictest2944914-21sed23:00:190
281711699528,26cyclictest0-21swapper/023:35:470
281711699526,27cyclictest2846061-21cat20:20:180
281711699526,27cyclictest2846061-21cat20:20:170
281711699519,30cyclictest0-21swapper/019:45:000
281711699511,3cyclictest2939888-21ssh22:53:400
281711699511,3cyclictest2864939-21diskmemload23:07:370
281711699510,3cyclictest2828869-21processes19:35:230
281711699510,3cyclictest0-21swapper/023:10:230
281711699510,3cyclictest0-21swapper/021:01:240
179699510,3rtkit-daemon1795-21rtkit-daemon00:35:200
281711699500,8cyclictest2928139-21seq22:35:310
281711699500,38cyclictest2917676-21ssh22:20:590
281711699500,2cyclictest2844082-21if_enp2s020:15:160
281711699497,30cyclictest2864939-21diskmemload22:00:350
281711699491,7cyclictest3007736-21ssh00:30:500
179699490,4rtkit-daemon1795-21rtkit-daemon20:41:181
28285582480,1chrt2828557-21/usr/sbin/munin19:35:201
281711699481,9cyclictest2957767-21ssh23:19:270
281711699481,8cyclictest2994634-21seq00:10:330
281711699481,30cyclictest2839707-21/usr/sbin/munin20:05:150
281711699480,8cyclictest2964127-21seq23:28:000
281711699477,21cyclictest2911263-21taskset22:12:120
281711699476,29cyclictest0-21swapper/023:55:480
281711699476,25cyclictest2855376-21cpu20:45:140
281711699475,25cyclictest0-21swapper/022:27:410
281711699473,35cyclictest2824088-21apt-get19:25:130
281711699472,32cyclictest2864939-21diskmemload22:56:580
281711699471,7cyclictest2836560-21seq19:55:200
281711699470,6cyclictest2923179-21/usr/sbin/munin22:30:200
281711699470,5cyclictest2976883-21sed23:45:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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