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2026-07-26 - 21:42
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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 rackcslot8.osadl.org (updated Sun Jul 26, 2026 12:48:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913290,321ptp4l0-21swapper/107:06:391
1843399288153,0cyclictest151rcu_preempt09:27:4322
184339919120,122cyclictest0-21swapper/2907:45:1422
184339919120,122cyclictest0-21swapper/2907:45:1422
156212173165,6sleep190-21swapper/1907:05:2211
18426991727,121cyclictest0-21swapper/2808:50:1821
18426991668,157cyclictest151rcu_preempt10:38:3221
184269915416,137cyclictest151rcu_preempt11:25:1921
184339915032,87cyclictest0-21swapper/2909:17:1522
184339914932,76cyclictest0-21swapper/2911:41:3322
330891147139,6phc2sys0-21swapper/207:05:2612
18386991450,85cyclictest0-21swapper/2309:42:4816
182489914524,98cyclictest0-21swapper/510:16:5327
184339914427,75cyclictest0-21swapper/2912:18:5822
184339914427,116cyclictest0-21swapper/2911:10:2022
184339914124,82cyclictest0-21swapper/2909:20:1522
184269914152,58cyclictest0-21swapper/2811:57:5321
182129914129,65cyclictest0-21swapper/011:20:000
184269914052,58cyclictest0-21swapper/2807:16:4821
184269914052,58cyclictest0-21swapper/2807:16:4821
184269914030,66cyclictest0-21swapper/2809:20:1221
18248991400,85cyclictest0-21swapper/507:10:1427
18248991400,85cyclictest0-21swapper/507:10:1427
182129914031,67cyclictest0-21swapper/008:00:130
182129914031,67cyclictest0-21swapper/008:00:130
182129914030,68cyclictest0-21swapper/010:40:020
182129914030,67cyclictest0-21swapper/011:56:270
182129914029,65cyclictest0-21swapper/008:55:180
182129913930,71cyclictest0-21swapper/009:24:500
182129913929,67cyclictest0-21swapper/011:03:280
182129913831,69cyclictest0-21swapper/010:55:230
182129913830,64cyclictest0-21swapper/010:14:150
184339913732,58cyclictest0-21swapper/2910:36:5322
184339913719,109cyclictest0-21swapper/2911:17:4722
184269913739,61cyclictest0-21swapper/2810:54:4821
184269913731,65cyclictest0-21swapper/2807:10:2221
184269913731,65cyclictest0-21swapper/2807:10:2221
184269913730,69cyclictest0-21swapper/2810:45:1821
184269913730,66cyclictest0-21swapper/2811:08:4121
184269913730,63cyclictest0-21swapper/2808:31:0321
182129913731,68cyclictest0-21swapper/011:06:390
182129913726,65cyclictest0-21swapper/009:32:020
184269913628,65cyclictest0-21swapper/2807:55:1521
184269913628,65cyclictest0-21swapper/2807:55:1521
182489913615,120cyclictest0-21swapper/507:18:5527
182489913615,120cyclictest0-21swapper/507:18:5527
182129913630,62cyclictest0-21swapper/010:05:590
182129913627,65cyclictest0-21swapper/009:10:140
182129913529,62cyclictest0-21swapper/007:49:550
182129913529,62cyclictest0-21swapper/007:49:550
182129913528,64cyclictest0-21swapper/009:50:140
182129913528,60cyclictest0-21swapper/008:50:220
184339913424,69cyclictest0-21swapper/2910:14:5722
184269913457,68cyclictest0-21swapper/2812:34:1521
184269913430,64cyclictest0-21swapper/2809:05:0021
18426991340,78cyclictest0-21swapper/2807:32:1721
18426991340,78cyclictest0-21swapper/2807:32:1721
182129913431,69cyclictest0-21swapper/012:34:180
182129913429,64cyclictest0-21swapper/011:44:370
182129913419,67cyclictest0-21swapper/007:40:220
182129913419,67cyclictest0-21swapper/007:40:210
184269913331,70cyclictest0-21swapper/2808:40:1121
184269913329,64cyclictest0-21swapper/2807:35:1221
184269913329,64cyclictest0-21swapper/2807:35:1221
184269913327,64cyclictest0-21swapper/2809:35:1221
18363991335,119cyclictest151rcu_preempt10:05:0013
182129913330,68cyclictest0-21swapper/012:04:190
182129913330,66cyclictest0-21swapper/012:35:230
182129913330,62cyclictest0-21swapper/010:52:140
184269913236,66cyclictest0-21swapper/2810:55:2221
184269913230,67cyclictest0-21swapper/2807:29:0521
184269913230,67cyclictest0-21swapper/2807:29:0521
184269913230,65cyclictest0-21swapper/2808:05:2521
184269913230,65cyclictest0-21swapper/2808:05:2521
184269913230,63cyclictest0-21swapper/2810:07:1621
184269913228,62cyclictest0-21swapper/2810:30:1321
182129913232,66cyclictest0-21swapper/012:20:250
182129913231,69cyclictest0-21swapper/010:30:020
182129913230,66cyclictest0-21swapper/009:45:250
182129913229,64cyclictest0-21swapper/007:22:080
182129913229,64cyclictest0-21swapper/007:22:070
182129913229,60cyclictest0-21swapper/008:19:050
182129913228,63cyclictest0-21swapper/010:39:580
182129913227,61cyclictest0-21swapper/007:18:280
182129913227,61cyclictest0-21swapper/007:18:280
184269913129,65cyclictest0-21swapper/2809:15:2421
184269913125,60cyclictest0-21swapper/2807:55:0021
184269913125,60cyclictest0-21swapper/2807:55:0021
182489913122,87cyclictest0-21swapper/511:49:5327
182129913148,50cyclictest0-21swapper/011:22:530
182129913128,62cyclictest0-21swapper/008:05:020
182129913128,62cyclictest0-21swapper/008:05:020
182129913128,60cyclictest0-21swapper/010:00:240
182129913128,60cyclictest0-21swapper/008:25:160
184269913031,58cyclictest0-21swapper/2809:45:2121
184269913030,60cyclictest0-21swapper/2811:50:2421
184269913029,65cyclictest0-21swapper/2809:55:1421
184269913028,60cyclictest0-21swapper/2807:48:5121
184269913028,60cyclictest0-21swapper/2807:48:5121
182129913031,68cyclictest0-21swapper/008:35:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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