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2026-09-15 - 14:27
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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 Sep 15, 2026 00:49:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303539924042,1cyclictest151rcu_preempt21:37:1018
3273911870,179ptp4l0-21swapper/119:06:141
274032170162,6sleep210-21swapper/2119:05:2114
302389916729,88cyclictest0-21swapper/300:16:0523
302889916542,78cyclictest0-21swapper/1200:27:124
302389916230,99cyclictest0-21swapper/319:45:2323
302389916230,99cyclictest0-21swapper/319:45:2223
302389916133,94cyclictest0-21swapper/322:44:5623
302389915933,92cyclictest0-21swapper/323:59:1423
303309915423,124cyclictest151rcu_preempt22:11:2913
302889915036,69cyclictest0-21swapper/1221:35:394
302889914824,105cyclictest0-21swapper/1200:13:174
303309914515,18cyclictest151rcu_preempt23:20:4913
303139914522,50cyclictest0-21swapper/1620:30:198
303139914522,50cyclictest0-21swapper/1620:30:198
30288991451,87cyclictest0-21swapper/1223:10:024
302789914419,95cyclictest0-21swapper/1022:54:082
30278991430,88cyclictest0-21swapper/1022:40:152
302889914127,71cyclictest0-21swapper/1221:48:134
302389914130,72cyclictest0-21swapper/321:29:1723
302389913928,64cyclictest0-21swapper/322:10:5723
302889913828,66cyclictest0-21swapper/1222:00:474
302389913750,56cyclictest0-21swapper/323:21:4923
30238991370,85cyclictest0-21swapper/323:26:3723
303229913633,49cyclictest0-21swapper/1822:30:1310
303229913551,60cyclictest0-21swapper/1821:15:5610
302889913511,15cyclictest0-21swapper/1223:18:154
302389913442,60cyclictest0-21swapper/300:29:4223
302789913326,64cyclictest0-21swapper/1019:10:132
302519913354,64cyclictest0-21swapper/523:23:5927
302519913347,60cyclictest0-21swapper/521:47:5027
302519913327,61cyclictest0-21swapper/519:37:3527
302519913327,61cyclictest0-21swapper/519:37:3527
302389913347,52cyclictest0-21swapper/322:00:0423
302389913327,88cyclictest0-21swapper/322:06:2723
303229913244,60cyclictest0-21swapper/1820:55:0510
303229913225,69cyclictest0-21swapper/1823:01:4510
302789913246,59cyclictest0-21swapper/1020:40:332
302789913246,59cyclictest0-21swapper/1020:40:322
302789913246,58cyclictest0-21swapper/1020:30:232
302789913246,58cyclictest0-21swapper/1020:30:232
303309913190,40cyclictest137-21ksoftirqd/2023:05:5413
303229913154,58cyclictest0-21swapper/1819:55:0110
303229913154,58cyclictest0-21swapper/1819:55:0110
303229913144,55cyclictest0-21swapper/1821:21:4910
303229913131,71cyclictest0-21swapper/1800:03:4510
303229913126,65cyclictest0-21swapper/1823:56:1610
30297991310,78cyclictest0-21swapper/1323:18:475
302789913149,61cyclictest0-21swapper/1021:14:442
302789913145,57cyclictest0-21swapper/1020:36:482
302789913145,57cyclictest0-21swapper/1020:36:472
302789913130,70cyclictest0-21swapper/1022:47:452
302519913141,61cyclictest0-21swapper/500:25:5927
302519913129,72cyclictest0-21swapper/523:02:2027
302519913125,62cyclictest0-21swapper/520:12:0827
302519913125,62cyclictest0-21swapper/520:12:0827
302389913128,62cyclictest0-21swapper/323:38:0523
302389913127,65cyclictest0-21swapper/319:26:5523
302389913127,65cyclictest0-21swapper/319:26:5423
302389913127,65cyclictest0-21swapper/300:05:0723
30380991300,91cyclictest0-21swapper/3000:09:5024
303229913046,56cyclictest0-21swapper/1822:47:5310
303229913045,61cyclictest0-21swapper/1822:02:5810
303229913030,68cyclictest0-21swapper/1821:25:0110
303229913029,67cyclictest0-21swapper/1822:14:4310
303229913026,69cyclictest0-21swapper/1821:00:5910
303229913025,61cyclictest0-21swapper/1821:12:1110
30317991303,76cyclictest0-21swapper/1723:51:599
30297991300,128cyclictest0-21swapper/1319:38:365
30297991300,128cyclictest0-21swapper/1319:38:365
302789913046,63cyclictest0-21swapper/1022:57:212
302789913032,69cyclictest0-21swapper/1023:55:042
302789913031,65cyclictest0-21swapper/1023:43:202
302789913029,67cyclictest0-21swapper/1021:46:002
302789913027,69cyclictest0-21swapper/1020:25:282
302789913027,69cyclictest0-21swapper/1020:25:282
302789913027,58cyclictest0-21swapper/1019:50:182
302789913027,58cyclictest0-21swapper/1019:50:182
302789913026,67cyclictest0-21swapper/1023:24:042
302789913026,63cyclictest0-21swapper/1021:51:362
302789913025,63cyclictest0-21swapper/1023:02:102
302519913052,72cyclictest0-21swapper/522:19:5127
302519913030,71cyclictest0-21swapper/521:16:1527
302519913028,69cyclictest0-21swapper/521:31:3127
302519913025,66cyclictest0-21swapper/520:05:1127
302519913025,66cyclictest0-21swapper/520:05:1127
30251991300,83cyclictest0-21swapper/523:17:0227
302389913048,51cyclictest0-21swapper/323:14:5223
302389913028,69cyclictest0-21swapper/321:05:0123
302389913028,65cyclictest0-21swapper/321:40:0123
302389913027,70cyclictest0-21swapper/320:39:3423
302389913027,70cyclictest0-21swapper/320:39:3423
303229912950,56cyclictest0-21swapper/1823:44:2710
303229912943,52cyclictest0-21swapper/1822:25:5710
303229912928,67cyclictest0-21swapper/1819:35:2810
303229912928,67cyclictest0-21swapper/1819:35:2810
303089912921,54cyclictest0-21swapper/1523:58:217
302789912932,67cyclictest0-21swapper/1021:58:012
302789912932,62cyclictest0-21swapper/1020:53:542
302789912930,73cyclictest0-21swapper/1021:24:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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