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2026-09-18 - 17:02
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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 Fri Sep 18, 2026 12:49:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263359924952,131cyclictest151rcu_preempt07:40:1218
3273912400,225ptp4l0-21swapper/107:05:141
2626399208136,3cyclictest151rcu_preempt10:42:0631
330891196188,6phc2sys0-21swapper/207:05:2312
262589917257,110cyclictest0-21swapper/808:05:2030
263239916320,124cyclictest0-21swapper/2311:48:3016
263239916320,112cyclictest0-21swapper/2309:17:2116
262589915640,115cyclictest0-21swapper/811:20:2230
237052155145,7sleep50-21swapper/507:05:2227
263239915420,133cyclictest0-21swapper/2311:28:1816
262869915329,77cyclictest0-21swapper/1409:23:066
263239914815,112cyclictest0-21swapper/2311:55:2616
263239914720,92cyclictest0-21swapper/2310:00:0716
263239914720,92cyclictest0-21swapper/2310:00:0716
263039914727,79cyclictest0-21swapper/1808:50:0210
263039914727,75cyclictest0-21swapper/1810:35:1810
263039914727,75cyclictest0-21swapper/1810:35:1810
26286991470,71cyclictest0-21swapper/1411:23:536
262639914713,87cyclictest0-21swapper/909:23:3331
263039914627,100cyclictest0-21swapper/1811:35:0810
263039914625,88cyclictest0-21swapper/1810:17:4210
263039914625,88cyclictest0-21swapper/1810:17:4210
262639914614,84cyclictest0-21swapper/911:26:5931
262639914313,76cyclictest0-21swapper/909:18:4431
26358991420,88cyclictest0-21swapper/2912:04:4522
26286991420,85cyclictest0-21swapper/1411:34:366
263239914178,63cyclictest155-21ksoftirqd/2311:36:1216
263039914128,69cyclictest0-21swapper/1812:20:2310
26258991410,84cyclictest0-21swapper/811:32:3830
26286991400,84cyclictest0-21swapper/1410:40:056
262869913925,113cyclictest0-21swapper/1409:17:316
26286991390,82cyclictest0-21swapper/1411:53:496
26263991390,83cyclictest0-21swapper/910:18:3631
26263991390,83cyclictest0-21swapper/910:18:3531
26258991380,85cyclictest0-21swapper/812:40:0130
262869913626,72cyclictest0-21swapper/1410:10:406
262869913626,72cyclictest0-21swapper/1410:10:396
263239913520,72cyclictest0-21swapper/2310:40:1216
262869913541,67cyclictest0-21swapper/1408:51:026
26286991340,77cyclictest0-21swapper/1409:10:166
262639913414,100cyclictest0-21swapper/909:30:2031
262639913414,100cyclictest0-21swapper/909:30:2031
263549913325,70cyclictest0-21swapper/2811:50:0621
262869913328,72cyclictest0-21swapper/1408:48:536
26286991330,85cyclictest0-21swapper/1409:33:316
26286991330,85cyclictest0-21swapper/1409:33:316
262379913346,60cyclictest30480-21taskset08:00:2123
26286991320,84cyclictest0-21swapper/1408:00:166
26354991313,77cyclictest0-21swapper/2809:18:1621
263039913121,77cyclictest0-21swapper/1811:46:2310
263039913120,73cyclictest0-21swapper/1811:17:3210
262869913146,53cyclictest0-21swapper/1407:45:176
262869913130,75cyclictest0-21swapper/1410:47:326
262869913130,75cyclictest0-21swapper/1410:47:316
262869913128,68cyclictest0-21swapper/1411:59:406
26286991310,81cyclictest0-21swapper/1412:00:146
26286991310,81cyclictest0-21swapper/1407:29:176
26286991310,78cyclictest0-21swapper/1409:41:156
26286991310,78cyclictest0-21swapper/1409:41:156
26358991308,87cyclictest0-21swapper/2909:56:2922
26358991308,87cyclictest0-21swapper/2909:56:2922
26303991300,76cyclictest0-21swapper/1809:15:4110
262869913033,79cyclictest0-21swapper/1410:15:286
262869913033,79cyclictest0-21swapper/1410:15:286
262869913030,46cyclictest0-21swapper/1412:15:106
262869913027,62cyclictest0-21swapper/1410:56:056
262589913040,56cyclictest0-21swapper/809:20:0730
263039912914,87cyclictest0-21swapper/1807:17:3310
262869912927,73cyclictest0-21swapper/1410:54:286
262869912927,73cyclictest0-21swapper/1410:54:286
262589912924,61cyclictest0-21swapper/807:33:4430
262869912843,70cyclictest0-21swapper/1412:25:216
26286991280,87cyclictest0-21swapper/1409:55:426
26286991280,87cyclictest0-21swapper/1409:55:426
26286991280,77cyclictest0-21swapper/1411:11:346
262589912851,60cyclictest0-21swapper/812:24:4130
262589912843,58cyclictest0-21swapper/810:01:4930
262589912843,58cyclictest0-21swapper/810:01:4930
26286991277,81cyclictest0-21swapper/1408:25:546
262869912731,75cyclictest0-21swapper/1409:47:416
262869912731,75cyclictest0-21swapper/1409:47:406
262869912730,75cyclictest0-21swapper/1410:04:156
262869912730,75cyclictest0-21swapper/1410:04:146
262869912729,78cyclictest0-21swapper/1412:34:266
262869912729,67cyclictest0-21swapper/1411:06:476
262869912729,65cyclictest0-21swapper/1407:54:546
262869912721,70cyclictest0-21swapper/1410:35:156
262869912721,70cyclictest0-21swapper/1410:35:156
262589912746,54cyclictest0-21swapper/812:26:3930
262379912739,52cyclictest0-21swapper/310:27:0023
262379912739,52cyclictest0-21swapper/310:26:5923
263589912638,66cyclictest0-21swapper/2911:43:5422
262959912616,86cyclictest0-21swapper/1611:16:468
262869912629,70cyclictest0-21swapper/1410:05:196
262869912629,70cyclictest0-21swapper/1410:05:196
262869912625,59cyclictest0-21swapper/1412:05:016
262589912645,52cyclictest0-21swapper/809:25:1130
262589912645,52cyclictest0-21swapper/809:25:1130
262589912625,63cyclictest0-21swapper/810:28:1530
262589912625,63cyclictest0-21swapper/810:28:1430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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