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2026-05-20 - 01:43
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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 Tue May 19, 2026 12:48:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159909929295,1cyclictest151rcu_preempt11:03:251
3273912490,241ptp4l0-21swapper/107:09:251
3273912490,241ptp4l0-21swapper/107:09:241
160269918424,121cyclictest0-21swapper/611:05:2328
160509916431,128cyclictest151rcu_preempt09:32:2631
160429916387,75cyclictest64-21ksoftirqd/809:42:0530
160139915826,88cyclictest0-21swapper/411:31:2026
160139915720,136cyclictest0-21swapper/411:29:3626
160139915624,94cyclictest0-21swapper/408:40:1726
160139915624,93cyclictest0-21swapper/408:23:0526
160139915419,106cyclictest0-21swapper/411:46:4826
160139915322,96cyclictest0-21swapper/409:56:0426
160589915133,92cyclictest151rcu_preempt10:32:512
160139914824,82cyclictest0-21swapper/410:33:0526
16013991470,85cyclictest0-21swapper/412:36:5726
16013991470,85cyclictest0-21swapper/412:36:5726
160509914633,75cyclictest0-21swapper/909:42:0331
160429914522,40cyclictest0-21swapper/811:55:1130
160429914522,40cyclictest0-21swapper/811:55:1130
160139914426,63cyclictest0-21swapper/411:40:2326
16139991430,84cyclictest0-21swapper/2111:10:2514
160509913952,58cyclictest0-21swapper/911:19:5231
160429913945,56cyclictest0-21swapper/808:25:2530
16058991360,84cyclictest0-21swapper/1012:08:312
16058991360,84cyclictest0-21swapper/1012:08:302
160509913628,70cyclictest0-21swapper/910:49:5631
160429913644,58cyclictest0-21swapper/810:33:0930
160139913613,121cyclictest151rcu_preempt11:24:1426
160429913543,61cyclictest0-21swapper/807:45:2030
160589913416,92cyclictest0-21swapper/1007:15:252
160509913448,54cyclictest0-21swapper/911:25:4331
160509913426,64cyclictest0-21swapper/907:15:0631
160429913439,61cyclictest0-21swapper/812:09:3630
160429913439,61cyclictest0-21swapper/812:09:3630
160429913431,102cyclictest0-21swapper/810:05:2230
160429913428,68cyclictest0-21swapper/811:00:2430
160429913427,70cyclictest0-21swapper/811:41:3830
160509913346,59cyclictest0-21swapper/910:02:2231
160509913327,65cyclictest0-21swapper/909:59:0831
160509913326,63cyclictest0-21swapper/911:00:5731
160429913348,63cyclictest0-21swapper/812:14:5630
160429913348,63cyclictest0-21swapper/812:14:5530
160429913329,69cyclictest0-21swapper/811:09:3530
160429913329,69cyclictest0-21swapper/808:55:1930
160429913327,63cyclictest0-21swapper/811:45:0230
330891132122,7phc2sys0-21swapper/207:05:2012
330891132122,7phc2sys0-21swapper/207:05:1912
160509913230,67cyclictest0-21swapper/911:30:3331
160509913228,68cyclictest0-21swapper/907:47:0931
160429913230,72cyclictest0-21swapper/810:15:1530
160429913229,71cyclictest0-21swapper/812:38:4230
160429913229,71cyclictest0-21swapper/812:38:4130
160429913228,69cyclictest0-21swapper/810:29:4330
16081991310,81cyclictest0-21swapper/1307:47:465
160589913145,85cyclictest0-21swapper/1009:16:252
160589913127,65cyclictest0-21swapper/1011:15:042
160509913153,53cyclictest0-21swapper/909:36:1031
160509913129,67cyclictest0-21swapper/911:49:1531
160509913129,67cyclictest0-21swapper/911:40:1031
160509913125,75cyclictest0-21swapper/911:20:5631
160429913129,76cyclictest0-21swapper/809:10:1930
160429913129,68cyclictest0-21swapper/811:15:2330
160429913128,68cyclictest0-21swapper/810:56:0830
160139913126,75cyclictest0-21swapper/410:01:0226
15996991310,77cyclictest0-21swapper/211:47:3212
160589913042,58cyclictest0-21swapper/1012:27:132
160589913042,58cyclictest0-21swapper/1012:27:122
160509913056,64cyclictest0-21swapper/912:26:5531
160509913056,64cyclictest0-21swapper/912:26:5531
160509913029,72cyclictest0-21swapper/909:19:0431
160509913029,66cyclictest0-21swapper/910:50:1431
160509913028,70cyclictest0-21swapper/910:09:5131
160509913028,67cyclictest0-21swapper/912:10:3831
160509913028,67cyclictest0-21swapper/912:10:3731
160429913030,70cyclictest0-21swapper/810:54:1530
160429913030,65cyclictest0-21swapper/810:22:5930
160429913027,68cyclictest0-21swapper/812:16:4830
160429913027,68cyclictest0-21swapper/812:16:4830
160429913027,66cyclictest0-21swapper/810:42:4530
160429913027,62cyclictest0-21swapper/809:45:3330
161399912942,58cyclictest0-21swapper/2110:47:5814
16139991290,80cyclictest0-21swapper/2108:22:2114
161109912912,94cyclictest0-21swapper/1709:14:409
160589912925,61cyclictest0-21swapper/1011:08:392
160509912931,75cyclictest0-21swapper/910:18:2431
160509912931,65cyclictest0-21swapper/909:21:4431
160509912930,70cyclictest0-21swapper/911:54:0431
160509912930,70cyclictest0-21swapper/911:54:0431
160509912929,71cyclictest0-21swapper/912:18:0731
160509912929,71cyclictest0-21swapper/912:18:0731
160509912929,68cyclictest0-21swapper/911:07:3331
160509912928,72cyclictest0-21swapper/907:55:4131
160509912926,69cyclictest0-21swapper/909:26:3331
160429912930,72cyclictest0-21swapper/809:22:1730
160429912929,67cyclictest0-21swapper/811:50:1430
160429912929,67cyclictest0-21swapper/811:50:1330
160429912927,69cyclictest0-21swapper/811:30:2030
160429912927,67cyclictest0-21swapper/809:38:3830
160429912926,64cyclictest0-21swapper/810:38:3030
161399912844,57cyclictest0-21swapper/2107:40:2414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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