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2025-12-14 - 08:53
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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 rackcslot4.osadl.org (updated Sun Dec 14, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3836562260184,28sleep10-21swapper/119:09:481
3834802238197,26sleep00-21swapper/019:07:500
179699660,14rtkit-daemon1795-21rtkit-daemon19:49:471
38378399623,8cyclictest505136-21apt-get00:15:140
38378399612,7cyclictest512936-21apt-get00:35:130
38378399588,9cyclictest402467-21apt-get19:55:130
38378399572,6cyclictest404432-21apt-get20:00:140
179699570,3rtkit-daemon0-21swapper/023:36:080
179699570,3rtkit-daemon0-21swapper/022:20:160
179699550,3rtkit-daemon0-21swapper/021:08:140
179699550,3rtkit-daemon0-21swapper/020:51:060
3962212540,4sleep00-21swapper/019:40:120
179699530,4rtkit-daemon1795-21rtkit-daemon21:00:160
179699530,3rtkit-daemon0-21swapper/020:48:220
38378399522,9cyclictest433654-21apt-get21:15:140
179699500,4rtkit-daemon1795-21rtkit-daemon20:40:150
179699500,4rtkit-daemon1795-21rtkit-daemon00:27:050
179699500,3rtkit-daemon1795-21rtkit-daemon22:55:030
179699490,3rtkit-daemon1795-21rtkit-daemon23:05:500
179699490,3rtkit-daemon1795-21rtkit-daemon20:36:450
179699490,3rtkit-daemon1795-21rtkit-daemon20:05:160
179699480,4rtkit-daemon1795-21rtkit-daemon22:53:240
179699480,4rtkit-daemon1795-21rtkit-daemon22:49:440
179699480,4rtkit-daemon1795-21rtkit-daemon00:07:320
179699480,3rtkit-daemon0-21swapper/022:27:140
179699480,2rtkit-daemon1795-21rtkit-daemon23:10:040
179699470,4rtkit-daemon1795-21rtkit-daemon23:04:360
179699470,4rtkit-daemon1795-21rtkit-daemon00:21:460
179699470,3rtkit-daemon1795-21rtkit-daemon23:52:540
179699470,3rtkit-daemon1795-21rtkit-daemon19:47:460
179699470,3rtkit-daemon1795-21rtkit-daemon19:11:450
179699470,15rtkit-daemon1795-21rtkit-daemon20:24:260
383788994615,11cyclictest484144-21if_enp2s023:20:181
383788994615,11cyclictest395761-21taskset19:37:361
383788994613,14cyclictest489480-21chrt23:35:021
383788994613,10cyclictest459401-21chrt22:17:491
179699460,4rtkit-daemon1795-21rtkit-daemon22:08:500
179699460,3rtkit-daemon1795-21rtkit-daemon23:56:330
179699460,3rtkit-daemon1795-21rtkit-daemon22:40:460
179699460,3rtkit-daemon1795-21rtkit-daemon21:40:470
179699460,3rtkit-daemon1795-21rtkit-daemon19:38:580
179699460,3rtkit-daemon0-21swapper/122:36:191
179699460,3rtkit-daemon0-21swapper/020:19:280
179699460,2rtkit-daemon1795-21rtkit-daemon23:11:531
383788994514,11cyclictest459826-21taskset22:20:121
383788994514,10cyclictest410012-21chrt20:14:401
383788994514,10cyclictest391687-21chrt19:25:371
383788994511,22cyclictest471093-21sed22:45:231
383788994510,20cyclictest392310-21apt-get19:30:141
179699450,4rtkit-daemon1795-21rtkit-daemon22:34:320
179699450,3rtkit-daemon1795-21rtkit-daemon00:03:030
179699450,3rtkit-daemon0-21swapper/023:25:050
179699450,3rtkit-daemon0-21swapper/020:27:430
179699450,1rtkit-daemon1795-21rtkit-daemon23:47:120
383788994415,9cyclictest439509-21chrt21:27:571
383788994415,12cyclictest389868-21chrt19:21:581
383788994414,9cyclictest489175-21chrt23:33:381
383788994414,10cyclictest397816-21chrt19:43:351
383788994414,10cyclictest385844-21munin-setwarn19:15:021
383788994412,8cyclictest1-21systemd19:50:031
383788994412,11cyclictest4794292sleep123:08:361
383788994411,21cyclictest424529-21sed20:50:201
383788994411,11cyclictest5103792sleep100:25:431
383788994410,12cyclictest453828-21latency_hist22:05:011
179699440,3rtkit-daemon0-21swapper/022:14:150
38378899439,23cyclictest485413-21cron23:29:541
38378899439,16cyclictest497291-21/usr/sbin/munin23:55:221
38378899438,20cyclictest450061-21apt-get21:55:111
383788994315,12cyclictest413557-21chrt20:20:411
383788994314,11cyclictest445631-21chrt21:41:251
383788994314,10cyclictest463153-21taskset22:26:071
383788994313,18cyclictest513756-21seq00:35:241
383788994313,13cyclictest512596-21taskset00:33:401
383788994313,11cyclictest475362-21taskset22:56:531
383788994313,10cyclictest502589-21taskset00:05:501
383788994313,10cyclictest465231-21chrt22:32:331
383788994313,10cyclictest447610-21chrt21:46:491
383788994312,11cyclictest4118482sleep120:18:261
383788994311,13cyclictest441135-21awk21:30:251
383788994311,11cyclictest432771-21find21:10:241
383788994310,15cyclictest504496-21sshd00:10:261
179699430,3rtkit-daemon1795-21rtkit-daemon21:58:440
179699430,1rtkit-daemon1795-21rtkit-daemon21:32:550
38378899429,19cyclictest455915-21apt-get22:10:111
383788994215,10cyclictest483169-21chrt23:17:021
383788994213,9cyclictest415897-21taskset20:29:581
383788994211,18cyclictest469185-21sed22:40:271
383788994211,14cyclictest473134-21sed22:50:221
383788994211,14cyclictest403555-21sed19:55:241
383788994211,13cyclictest417512-21sshd20:31:251
383788994211,12cyclictest5007822sleep100:02:191
383788994211,12cyclictest448280-21ls21:50:141
383788994211,11cyclictest4775902sleep123:04:461
383788994211,10cyclictest419090-21sed20:35:231
383788994210,10cyclictest507748-21sed00:20:201
179699420,1rtkit-daemon1795-21rtkit-daemon21:39:000
179699420,1rtkit-daemon1795-21rtkit-daemon19:18:000
383788994114,10cyclictest385425-21sshd19:12:251
383788994113,10cyclictest443326-21chrt21:37:121
383788994111,10cyclictest1-21systemd20:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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