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2025-10-27 - 03:30
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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 50 highest latencies:
System rackcslot8.osadl.org (updated Sun Oct 26, 2025 12:49:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2931099352154,1cyclictest151rcu_preempt11:07:424
2482913090,301ptp4l0-21swapper/107:05:471
2927499304105,1cyclictest151rcu_preempt11:43:3027
2934299300102,24cyclictest151rcu_preempt11:45:4913
293429928890,0cyclictest137-21ksoftirqd/2011:04:0213
292989918129,151cyclictest0-21swapper/910:04:1031
2927899181170,8cyclictest151rcu_preempt12:18:1628
292989917827,135cyclictest0-21swapper/910:50:4031
293479917110,91cyclictest0-21swapper/2110:00:2514
292989916332,88cyclictest0-21swapper/912:33:4931
293109915372,79cyclictest88-21ksoftirqd/1210:46:024
292989915339,66cyclictest0-21swapper/910:08:5931
292989914628,76cyclictest0-21swapper/909:39:0331
2927899144139,1cyclictest151rcu_preempt09:48:0528
29253991440,85cyclictest0-21swapper/111:38:381
292989914029,65cyclictest0-21swapper/910:10:3531
292989913955,60cyclictest0-21swapper/910:57:3731
292989913831,71cyclictest0-21swapper/912:28:2831
292789913856,38cyclictest0-21swapper/610:09:2828
29253991380,85cyclictest0-21swapper/110:39:511
292989913756,62cyclictest0-21swapper/910:31:5831
292989913729,70cyclictest0-21swapper/911:18:5931
292989913729,66cyclictest0-21swapper/911:43:3431
292989913648,56cyclictest0-21swapper/909:40:3931
292989913630,68cyclictest0-21swapper/909:31:0231
292989913629,65cyclictest0-21swapper/910:18:0431
292989913628,68cyclictest0-21swapper/911:06:4231
2931499135134,1cyclictest151rcu_preempt11:14:345
292989913558,64cyclictest0-21swapper/910:20:1231
292989913557,60cyclictest0-21swapper/909:28:5431
292989913532,67cyclictest0-21swapper/912:10:5031
292989913531,62cyclictest0-21swapper/912:06:1731
292989913528,63cyclictest0-21swapper/912:20:5931
292989913528,63cyclictest0-21swapper/912:15:0631
293039913429,64cyclictest0-21swapper/1010:15:252
292989913431,67cyclictest0-21swapper/911:21:2731
292989913430,68cyclictest0-21swapper/911:45:1031
292989913430,65cyclictest0-21swapper/912:02:4931
292989913429,63cyclictest0-21swapper/909:51:2131
292989913429,62cyclictest0-21swapper/908:00:1231
292989913429,62cyclictest0-21swapper/908:00:1131
292989913428,60cyclictest0-21swapper/909:20:2131
292989913427,64cyclictest0-21swapper/910:47:2731
292539913453,60cyclictest0-21swapper/112:06:571
292539913439,62cyclictest0-21swapper/107:53:571
292539913439,62cyclictest0-21swapper/107:53:571
292989913330,64cyclictest0-21swapper/912:39:4131
292989913329,65cyclictest0-21swapper/909:12:2031
292989913327,62cyclictest0-21swapper/911:37:4231
292789913337,77cyclictest0-21swapper/611:08:1528
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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