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2026-04-05 - 21:24
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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 Apr 05, 2026 12:48:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912580,250ptp4l0-21swapper/107:07:141
3273912580,250ptp4l0-21swapper/107:07:141
1131999176174,1cyclictest151rcu_preempt10:53:4527
114609916527,112cyclictest0-21swapper/2511:43:4718
113199916358,71cyclictest0-21swapper/512:15:3127
113199916358,71cyclictest0-21swapper/512:15:3127
112969915937,91cyclictest0-21swapper/009:19:520
112969915936,89cyclictest0-21swapper/011:45:180
112969915527,36cyclictest0-21swapper/009:25:170
1134199154152,1cyclictest151rcu_preempt10:07:3830
114609915345,70cyclictest0-21swapper/2510:46:3618
113199915358,46cyclictest0-21swapper/511:29:1227
114609915244,75cyclictest0-21swapper/2511:31:3018
330891150141,6phc2sys0-21swapper/207:05:2012
330891150141,6phc2sys0-21swapper/207:05:2012
112969915025,125cyclictest0-21swapper/009:50:240
113199914943,78cyclictest0-21swapper/511:49:1927
113019914950,47cyclictest0-21swapper/109:34:191
114609914845,94cyclictest0-21swapper/2510:10:1518
114609914845,60cyclictest0-21swapper/2510:01:1018
113159914622,80cyclictest0-21swapper/410:11:1026
114609914433,16cyclictest0-21swapper/2509:16:0018
113199914438,75cyclictest0-21swapper/510:35:2227
112969914433,58cyclictest0-21swapper/009:31:400
113199914336,98cyclictest0-21swapper/510:58:0027
11315991430,85cyclictest0-21swapper/412:32:4826
11315991430,85cyclictest0-21swapper/412:32:4826
112969914324,80cyclictest0-21swapper/010:27:330
114609914232,109cyclictest0-21swapper/2509:50:1518
114609914031,77cyclictest0-21swapper/2512:27:2118
114609914031,77cyclictest0-21swapper/2512:27:2118
114609914029,83cyclictest0-21swapper/2510:15:3618
115039913946,60cyclictest0-21swapper/3111:52:5125
114609913929,109cyclictest0-21swapper/2511:35:1418
1146099138137,0cyclictest167-21ksoftirqd/2510:41:4718
11341991380,81cyclictest0-21swapper/809:52:2330
112969913829,91cyclictest0-21swapper/009:49:170
11301991360,85cyclictest0-21swapper/108:55:341
114609913529,103cyclictest0-21swapper/2511:25:3618
112969913548,86cyclictest13-21ksoftirqd/011:37:490
114609913428,66cyclictest0-21swapper/2509:42:2818
112969913436,61cyclictest0-21swapper/012:33:220
112969913436,61cyclictest0-21swapper/012:33:220
112969913430,48cyclictest0-21swapper/008:20:120
115039913328,65cyclictest0-21swapper/3109:40:4125
115039913245,50cyclictest0-21swapper/3111:25:1025
113159913223,70cyclictest0-21swapper/407:48:2826
113019913230,92cyclictest0-21swapper/110:25:211
115039913131,59cyclictest0-21swapper/3112:20:1425
115039913131,59cyclictest0-21swapper/3112:20:1325
11380991310,85cyclictest0-21swapper/1309:23:335
11380991310,116cyclictest0-21swapper/1311:13:395
113419913126,102cyclictest64-21ksoftirqd/812:29:1630
113419913126,102cyclictest64-21ksoftirqd/812:29:1530
112969913137,43cyclictest0-21swapper/009:40:150
115039913028,61cyclictest0-21swapper/3111:05:2325
113019913027,102cyclictest0-21swapper/111:02:141
11296991300,84cyclictest0-21swapper/009:55:120
11481991290,83cyclictest0-21swapper/2810:05:1921
11503991283,72cyclictest0-21swapper/3107:19:3825
11503991283,72cyclictest0-21swapper/3107:19:3825
113159912851,61cyclictest0-21swapper/410:40:2626
11380991270,78cyclictest0-21swapper/1311:31:185
113019912638,87cyclictest0-21swapper/109:15:201
11296991260,77cyclictest0-21swapper/008:59:030
100252126118,6sleep260-21swapper/2607:08:1919
100252126118,6sleep260-21swapper/2607:08:1919
115039912529,55cyclictest0-21swapper/3111:20:2225
115039912527,58cyclictest0-21swapper/3110:55:1525
11481991250,85cyclictest0-21swapper/2808:18:2521
114609912527,61cyclictest0-21swapper/2509:28:0218
11481991240,86cyclictest185-21ksoftirqd/2808:55:1621
113199912436,60cyclictest0-21swapper/509:25:5927
11315991246,75cyclictest0-21swapper/412:16:1926
11315991246,75cyclictest0-21swapper/412:16:1926
115039912226,54cyclictest0-21swapper/3110:10:2125
115039912225,60cyclictest0-21swapper/3110:49:5425
115039912224,58cyclictest0-21swapper/3112:05:1425
113199912233,53cyclictest0-21swapper/508:17:1027
113019912219,99cyclictest0-21swapper/108:47:331
112969912237,41cyclictest0-21swapper/011:26:320
100842122115,6sleep120-21swapper/1207:09:094
100842122115,6sleep120-21swapper/1207:09:094
115039912126,57cyclictest0-21swapper/3111:17:0825
113199912127,66cyclictest0-21swapper/511:00:2927
11315991216,94cyclictest0-21swapper/412:14:1126
11315991216,94cyclictest0-21swapper/412:14:1026
112969912137,52cyclictest0-21swapper/011:45:000
115039912026,56cyclictest0-21swapper/3110:06:0325
114609912045,41cyclictest0-21swapper/2510:06:3018
113199912051,62cyclictest0-21swapper/510:10:1127
113199912028,62cyclictest0-21swapper/509:13:1627
113199912027,65cyclictest0-21swapper/509:39:1427
113199912026,62cyclictest0-21swapper/510:04:5627
113199912025,56cyclictest0-21swapper/512:03:2527
113199912024,62cyclictest0-21swapper/509:48:3327
113159912045,52cyclictest0-21swapper/407:25:5226
113159912022,69cyclictest0-21swapper/410:16:3926
11315991200,67cyclictest0-21swapper/409:33:3626
113019912028,46cyclictest0-21swapper/110:59:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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