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2026-11-07 - 06:28
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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 Sat Nov 07, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28067902337273,49sleep00-21swapper/019:07:210
28067472269198,40sleep10-21swapper/119:06:551
280718799193188,3cyclictest2050809-21kworker/u8:019:24:191
28071849910292,8cyclictest2813564-21fwupd19:24:180
29513842570,4sleep00-21swapper/023:19:320
29431982490,5sleep0161rcuc/023:07:130
28155462480,1chrt2815545-21sshd19:29:191
29538582450,26sleep02953863-21ssh23:21:550
136599450,3rtkit-daemon0-21swapper/120:42:251
136599420,5rtkit-daemon2956991-21ssh23:25:380
136599400,3rtkit-daemon0-21swapper/119:43:351
136599360,5rtkit-daemon2891388-21ssh21:55:341
136599350,7rtkit-daemon2969993-21ssh23:45:061
136599320,4rtkit-daemon1364-21rtkit-daemon23:06:491
29400762290,26sleep02940084-21ssh23:03:200
28418462290,5chrt2841843-21systemctl20:35:010
280718799295,22cyclictest0-21swapper/121:24:241
2807187992918,6cyclictest2923103-40apt-check22:40:201
2807184992914,8cyclictest2882609-21apt-get21:45:140
136599290,4rtkit-daemon1364-21rtkit-daemon00:15:010
2807187992815,2cyclictest0-21swapper/121:25:161
136599280,5rtkit-daemon2919250-21grep22:35:170
136599280,5rtkit-daemon2919250-21grep22:35:170
29351882270,12sleep12935190-21grep22:55:231
136599270,3rtkit-daemon1364-21rtkit-daemon21:23:490
280718799265,3cyclictest141rcu_preempt21:35:001
280718799263,15cyclictest2926677-21apt-get22:45:131
280718799262,15cyclictest2886376-21apt-get21:50:141
2807187992619,4cyclictest2841838-21python320:35:021
2807187992611,9cyclictest2858628-1kworker/u9:222:00:101
280718499263,16cyclictest2815831-21apt-get19:30:140
2807184992611,9cyclictest2924822-1kworker/u9:022:50:120
136599260,10rtkit-daemon2833055-21taskset20:11:091
280718799253,15cyclictest2987511-21apt-get00:10:121
280718499253,15cyclictest2933922-21apt-get22:55:140
280718499252,16cyclictest2867504-21apt-get21:25:130
280718499252,15cyclictest2821776-21apt-get19:45:160
280718499252,14cyclictest2819796-21apt-get19:40:110
136599250,4rtkit-daemon1364-21rtkit-daemon19:37:100
280718799246,3cyclictest141rcu_preempt23:55:401
280718799244,18cyclictest2839725-21gpgv20:30:011
280718799244,18cyclictest0-21swapper/119:39:551
280718799244,12cyclictest2966319-21apt-get23:40:131
280718799243,3cyclictest141rcu_preempt20:25:281
280718799243,3cyclictest141rcu_preempt20:25:271
280718799242,16cyclictest2962680-21apt-get23:35:131
280718799242,16cyclictest2897224-21apt-get22:05:161
280718799242,15cyclictest2973614-21apt-get23:50:141
280718799241,20cyclictest2875234-21apt-get21:35:111
280718799240,22cyclictest2960084-21awk23:30:221
280718499246,3cyclictest141rcu_preempt21:10:000
280718499245,17cyclictest2834578-21cat20:15:230
280718499242,15cyclictest2825718-21apt-get19:55:140
280718499241,6cyclictest2926445-21perf22:45:000
2807184992410,9cyclictest2957689-1kworker/u9:100:00:130
136599240,3rtkit-daemon0-21swapper/023:42:140
280718799233,2cyclictest141rcu_preempt23:25:241
280718799233,12cyclictest2984430-21apt-get00:05:141
280718799232,15cyclictest2911829-21apt-get22:25:141
280718799232,14cyclictest2878939-21apt-get21:40:151
280718799232,14cyclictest2860177-21apt-get21:15:141
2807187992311,11cyclictest26-21ksoftirqd/100:35:001
2807187992310,8cyclictest2858628-1kworker/u9:222:30:141
280718799230,6cyclictest2827505-21munin-run20:00:001
280718799230,4cyclictest2945813-21switchtime23:10:231
280718799230,21cyclictest2882976-21sshd21:45:171
280718499239,8cyclictest2957689-1kworker/u9:123:55:120
280718499239,8cyclictest2924822-1kworker/u9:023:10:130
280718499234,2cyclictest141rcu_preempt23:45:550
280718499233,15cyclictest2908100-21apt-get22:20:130
280718499233,12cyclictest2829689-21apt-get20:05:140
2807184992313,8cyclictest2875462-21df21:35:140
2807184992311,10cyclictest13-21ksoftirqd/022:00:200
136599230,4rtkit-daemon2964416-21ssh23:36:140
280718799229,7cyclictest61750irq/132-enp2s023:00:121
280718799229,11cyclictest26-21ksoftirqd/119:45:251
280718799229,11cyclictest26-21ksoftirqd/119:15:221
280718799224,9cyclictest2990827-21apt-get00:15:101
280718799224,16cyclictest2904086-21latency_hist22:15:011
280718799223,3cyclictest141rcu_preempt20:05:021
280718799223,18cyclictest2948633-21tune2fs23:15:161
280718799223,17cyclictest0-21swapper/100:20:171
280718799223,11cyclictest2904317-21apt-get22:15:131
280718799222,14cyclictest2918871-21apt-get22:35:141
280718799222,14cyclictest2918871-21apt-get22:35:141
280718499228,9cyclictest2900824-21apt-get22:10:130
280718499224,2cyclictest141rcu_preempt22:45:170
280718499223,11cyclictest2850326-21apt-get20:55:130
280718499223,11cyclictest2835627-21apt-get20:20:110
280718499222,14cyclictest2842413-21apt-get20:35:130
280718499222,13cyclictest2959179-21apt-get23:30:130
280718499222,12cyclictest2844408-21apt-get20:40:110
2807184992214,6cyclictest13-21ksoftirqd/021:35:020
136599220,3rtkit-daemon0-21swapper/121:10:351
136599220,3rtkit-daemon0-21swapper/121:05:241
136599220,3rtkit-daemon0-21swapper/121:00:021
136599220,3rtkit-daemon0-21swapper/100:36:391
280718799213,16cyclictest2825626-21cat19:55:001
280718799213,10cyclictest2980875-21apt-get00:00:121
280718799212,10cyclictest2807311-21apt-get19:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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