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2026-07-06 - 04:34
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot7.osadl.org (updated Mon Jul 06, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49049910858,37cyclictest3996-21apt-get20:32:480
4838210513,64sleep04854-21latencyplot18:57:410
49049910349,44cyclictest21684-21apt-get19:47:490
49049910234,26cyclictest8481-21seq00:26:560
49049910234,26cyclictest8481-21seq00:26:560
49049910036,23cyclictest14589-21seq21:54:170
4904999930,24cyclictest0-21swapper/021:17:030
4904999734,23cyclictest21652-21seq23:00:150
4904999642,18cyclictest11935-21/usr/sbin/munin23:38:060
4904999629,25cyclictest0-21swapper/021:36:540
4904999629,25cyclictest0-21swapper/021:36:540
34332968,59sleep13445-21apt-get18:52:491
4904999540,24cyclictest3620-21seq20:31:210
4904999431,24cyclictest0-21swapper/022:01:540
4904999431,24cyclictest0-21swapper/022:01:540
4904999336,22cyclictest1665-21seq23:21:390
4904999238,17cyclictest27237-21ssh22:16:100
4904999234,26cyclictest6414-21seq19:02:300
4904999233,23cyclictest1911-21runrttasks00:15:170
4904999233,23cyclictest1911-21runrttasks00:15:170
4904999230,24cyclictest0-21swapper/023:32:010
4904999230,23cyclictest352-21runrttasks19:16:400
4904999230,23cyclictest352-21runrttasks19:16:400
4904999138,20cyclictest26110-21seq21:19:280
4904999133,23cyclictest22768-21seq23:02:430
4904999131,16cyclictest21075-21ssh21:12:380
4904999044,38cyclictest12393-21ssh20:57:520
4904999044,38cyclictest12393-21ssh20:57:520
4904999036,19cyclictest10019-21seq19:11:340
4904999035,20cyclictest18120-21seq19:37:050
4904999034,20cyclictest352-21runrttasks19:06:520
4904999032,24cyclictest19732-21seq19:42:080
4904999032,23cyclictest0-21swapper/020:56:450
4904999032,21cyclictest0-21swapper/022:22:500
4904999029,24cyclictest0-21swapper/022:53:470
4904998964,18cyclictest3069-21ssh00:17:470
4904998939,15cyclictest4162-21seq23:25:160
4904998939,15cyclictest4162-21seq23:25:160
4904998938,19cyclictest16484-21seq19:31:430
4904998930,26cyclictest0-21swapper/021:44:030
4904998929,24cyclictest0-21swapper/023:57:100
4913998857,14cyclictest181rcu_preempt23:57:402
4904998837,21cyclictest352-21runrttasks22:27:530
4904998836,14cyclictest20475-21seq22:04:020
4904998835,20cyclictest24481-21seq19:55:450
4904998835,20cyclictest24481-21seq19:55:450
4904998835,15cyclictest29629-21seq20:11:280
4904998834,16cyclictest32601-21seq20:18:210
4904998832,18cyclictest0-21swapper/019:45:360
4904998831,21cyclictest0-21swapper/020:51:390
4904998831,21cyclictest0-21swapper/020:51:390
4904998829,21cyclictest24600-21runrttasks22:12:090
4904998829,21cyclictest24600-21runrttasks22:12:090
4904998827,23cyclictest0-21swapper/023:45:380
4904998826,24cyclictest9222-21runrttasks22:39:000
4904998737,22cyclictest27875-21seq00:03:550
4904998732,22cyclictest0-21swapper/020:15:250
4904998731,20cyclictest0-21swapper/020:04:140
4904998730,22cyclictest0-21swapper/020:44:340
4904998730,20cyclictest0-21swapper/022:46:130
4904998730,20cyclictest0-21swapper/020:24:370
4904998730,20cyclictest0-21swapper/020:24:370
4904998726,25cyclictest15681-21runrttasks22:50:140
4904998726,25cyclictest15681-21runrttasks22:50:140
4904998643,36cyclictest352-21runrttasks22:32:520
4904998642,35cyclictest0-21swapper/019:17:530
4904998640,15cyclictest30210-21seq21:27:340
4904998636,40cyclictest17317-21/usr/sbin/munin23:48:120
4904998636,40cyclictest17317-21/usr/sbin/munin23:48:120
4904998636,26cyclictest9929-21seq23:34:360
4904998636,26cyclictest9929-21seq23:34:360
4904998635,20cyclictest26439-21seq20:02:130
4904998635,20cyclictest26439-21seq20:02:130
4904998629,23cyclictest0-21swapper/023:59:370
4904998627,22cyclictest0-21swapper/021:39:510
492299854,29cyclictest6427-21chrt23:28:153
4913998543,33cyclictest29650-21ls00:07:542
4904998530,21cyclictest0-21swapper/021:51:180
4913998467,11cyclictest4887-21kworker/u17:1-rpciod22:48:042
4913998467,11cyclictest4887-21kworker/u17:1-rpciod22:48:042
4913998464,10cyclictest0-21swapper/221:08:112
4913998462,12cyclictest0-21swapper/223:12:592
4913998462,12cyclictest0-21swapper/223:12:592
4910998440,33cyclictest4361-21kernelversion20:33:021
4904998436,16cyclictest14657-21seq19:24:130
4904998435,21cyclictest352-21runrttasks00:11:410
4904998429,23cyclictest0-21swapper/023:11:100
398228421,33sleep20-21swapper/218:53:152
4913998362,13cyclictest0-21swapper/219:52:532
4913998362,13cyclictest0-21swapper/219:52:532
4910998341,32cyclictest27583-21timerwakeupswit20:03:121
4904998350,24cyclictest28089-21apt-get22:17:480
4904998350,24cyclictest28089-21apt-get22:17:480
4904998329,20cyclictest0-21swapper/020:38:380
4904998328,19cyclictest0-21swapper/021:07:360
4904998328,19cyclictest0-21swapper/021:07:360
4913998254,20cyclictest7639-21netstat21:43:052
4910998263,14cyclictest4896-21cyclictest00:27:401
4910998263,14cyclictest4896-21cyclictest00:27:401
4910998261,12cyclictest3410-21sh22:30:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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