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2026-08-14 - 20:19
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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 Fri Aug 14, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
991726956,8sleep10-21swapper/107:04:571
1017826956,8sleep00-21swapper/007:07:410
290692680,0sleep00-21swapper/011:29:210
10404993210,17cyclictest0-21swapper/012:21:080
10404993021,9cyclictest0-21swapper/010:35:120
1040599281,21cyclictest0-21swapper/111:14:451
10404992815,7cyclictest0-21swapper/012:37:400
10405992727,0cyclictest0-21swapper/110:41:341
10404992610,9cyclictest20226-21apache210:38:200
10404992610,1cyclictest0-21swapper/010:19:100
10404992610,0cyclictest0-21swapper/010:12:390
1040599252,5cyclictest17498-21apache_accesses09:43:211
1040599252,5cyclictest17498-21apache_accesses09:43:211
10404992510,6cyclictest0-21swapper/009:59:590
10404992510,0cyclictest0-21swapper/008:53:260
1040499250,0cyclictest0-21swapper/010:16:570
10405992410,3cyclictest0-21swapper/110:13:391
1040499244,16cyclictest0-21swapper/009:28:440
10404992422,1cyclictest0-21swapper/008:06:370
1040499242,19cyclictest0-21swapper/007:13:300
10404992416,7cyclictest0-21swapper/007:19:580
10404992410,8cyclictest0-21swapper/008:48:200
1040499240,12cyclictest13760-21irqstats11:08:240
10405992321,1cyclictest21066-21hddtemp_smartct10:33:221
10405992310,7cyclictest0-21swapper/110:22:211
10404992319,2cyclictest20249-21apache212:25:290
1040599227,8cyclictest0-21swapper/112:08:221
10405992212,2cyclictest0-21swapper/110:53:231
10405992210,7cyclictest0-21swapper/110:03:251
10405992210,6cyclictest0-21swapper/107:43:261
10405992210,4cyclictest0-21swapper/110:43:291
1040599220,11cyclictest0-21swapper/107:58:251
10404992216,4cyclictest10402-21cyclictest11:42:170
10404992212,5cyclictest0-21swapper/011:14:430
10404992211,2cyclictest0-21swapper/010:03:200
10404992211,1cyclictest20249-21apache210:57:070
10404992210,9cyclictest4589-21ssh09:23:530
10404992210,3cyclictest0-21swapper/009:38:280
1040499220,3cyclictest0-21swapper/009:17:450
1754922110,0sleep10-21swapper/111:58:351
1040599217,8cyclictest0-21swapper/108:43:221
1040599211,2cyclictest0-21swapper/111:50:541
10405992112,5cyclictest100250irq/107-eth1-rx11:54:451
1040599211,19cyclictest0-21swapper/112:20:491
10405992110,7cyclictest0-21swapper/111:40:071
10405992110,6cyclictest0-21swapper/108:23:261
10405992110,5cyclictest100250irq/107-eth1-rx09:29:151
1040499217,7cyclictest0-21swapper/012:08:200
1040499215,10cyclictest0-21swapper/007:33:250
10404992118,1cyclictest20249-21apache209:36:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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