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2025-12-20 - 17:00
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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 rackcslot2.osadl.org (updated Sat Dec 20, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1107426957,8sleep10-21swapper/107:05:311
1129226649,8sleep00-21swapper/007:07:490
11680992810,16cyclictest0-21swapper/111:10:131
1168099280,11cyclictest0-21swapper/108:30:211
11679992810,0cyclictest0-21swapper/010:09:520
11679992727,0cyclictest0-21swapper/007:55:180
1167999270,1cyclictest22474-21irqstats09:00:130
11680992626,0cyclictest0-21swapper/111:54:191
11680992610,16cyclictest0-21swapper/111:48:261
1168099250,23cyclictest0-21swapper/112:24:131
1167999255,9cyclictest0-21swapper/008:50:200
11679992510,3cyclictest0-21swapper/012:30:170
11680992315,4cyclictest1652-21perl10:55:131
11679992310,6cyclictest0-21swapper/009:30:110
1167999230,9cyclictest21532-21apache212:15:100
1167999230,11cyclictest0-21swapper/010:50:140
1168099228,11cyclictest0-21swapper/112:35:181
1168099223,12cyclictest0-21swapper/112:00:131
11680992222,0cyclictest0-21swapper/108:19:151
11680992213,3cyclictest0-21swapper/109:27:391
1168099221,20cyclictest0-21swapper/107:10:161
11680992210,5cyclictest0-21swapper/108:55:111
11679992221,0cyclictest100150irq/106-eth1-rx09:57:390
11679992210,6cyclictest0-21swapper/010:25:110
11679992210,5cyclictest0-21swapper/008:18:260
1167999220,2cyclictest9002-21apache_volume11:15:100
1168099217,9cyclictest0-21swapper/111:15:121
1168099215,10cyclictest0-21swapper/108:10:111
1168099214,16cyclictest0-21swapper/107:40:101
1168099214,11cyclictest0-21swapper/112:10:141
11680992115,3cyclictest21572-21apache211:00:151
1168099211,13cyclictest0-21swapper/109:45:111
11680992110,7cyclictest0-21swapper/110:50:241
1167999216,11cyclictest0-21swapper/010:35:170
11679992121,0cyclictest0-21swapper/010:15:170
11679992117,3cyclictest744-21snmpd07:22:530
11679992110,6cyclictest0-21swapper/012:13:530
11679992110,6cyclictest0-21swapper/011:40:200
11679992110,6cyclictest0-21swapper/011:30:160
11679992110,6cyclictest0-21swapper/010:58:110
11679992110,4cyclictest0-21swapper/009:15:090
2044222010,0sleep00-21swapper/008:55:150
1914222010,2sleep00-21swapper/007:29:190
11680992019,1cyclictest21554-21apache210:03:151
11680992017,3cyclictest802-21apache208:28:581
11680992010,4cyclictest0-21swapper/109:54:391
11680992010,2cyclictest0-21swapper/109:19:581
1167999208,6cyclictest15197-21mailstats08:40:170
1167999208,10cyclictest0-21swapper/007:45:110
1167999203,11cyclictest0-21swapper/012:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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