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2026-05-20 - 22:16
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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 Wed May 20, 2026 12:48:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913000,287ptp4l0-21swapper/107:05:201
3273913000,287ptp4l0-21swapper/107:05:201
99649926468,1cyclictest151rcu_preempt09:53:071
330891259251,6phc2sys0-21swapper/207:05:3012
330891259251,6phc2sys0-21swapper/207:05:3012
100679915742,76cyclictest0-21swapper/1812:23:0310
100679915742,76cyclictest0-21swapper/1812:23:0310
100679915533,108cyclictest0-21swapper/1812:13:2610
100679915331,79cyclictest0-21swapper/1810:28:0810
99759915134,103cyclictest0-21swapper/311:57:0923
99949915043,71cyclictest0-21swapper/609:29:4128
99759914730,106cyclictest0-21swapper/310:10:1523
10115991453,111cyclictest0-21swapper/2710:54:4620
9983991440,91cyclictest21654-21/usr/sbin/munin09:00:1826
99759914327,100cyclictest0-21swapper/311:05:1823
100679914327,73cyclictest0-21swapper/1812:19:1810
9983991410,83cyclictest0-21swapper/407:55:2426
99759914022,116cyclictest0-21swapper/310:29:2923
99949913830,107cyclictest0-21swapper/611:05:2128
10058991381,134cyclictest0-21swapper/1610:27:368
99839913729,63cyclictest0-21swapper/409:51:3926
99839913728,64cyclictest0-21swapper/410:05:1326
99759913722,94cyclictest0-21swapper/309:07:5623
99839913640,61cyclictest0-21swapper/410:15:0126
99839913628,70cyclictest0-21swapper/412:10:2026
99839913544,71cyclictest0-21swapper/409:59:4826
99839913447,58cyclictest0-21swapper/409:42:5726
99839913431,69cyclictest0-21swapper/412:20:1426
99839913431,69cyclictest0-21swapper/412:20:1426
9983991340,82cyclictest0-21swapper/409:20:2226
99759913418,90cyclictest0-21swapper/310:35:2223
99949913341,65cyclictest0-21swapper/609:15:1528
99839913332,72cyclictest0-21swapper/409:10:3626
99839913331,73cyclictest0-21swapper/410:50:2426
99839913330,72cyclictest0-21swapper/410:20:1226
99839913329,72cyclictest0-21swapper/407:50:1426
99839913328,69cyclictest0-21swapper/411:30:1226
99839913328,66cyclictest0-21swapper/409:27:5326
99839913327,63cyclictest0-21swapper/411:35:4026
99839913327,63cyclictest0-21swapper/410:45:2026
9983991330,77cyclictest0-21swapper/410:00:2426
10039991330,80cyclictest0-21swapper/1309:06:495
100099913323,66cyclictest0-21swapper/811:17:3030
99839913231,76cyclictest0-21swapper/411:45:1326
99839913231,75cyclictest0-21swapper/408:45:1326
99839913231,74cyclictest0-21swapper/410:15:0226
99839913231,65cyclictest0-21swapper/410:30:0026
99839913230,71cyclictest0-21swapper/412:26:5126
99839913230,71cyclictest0-21swapper/412:26:5126
99839913230,70cyclictest0-21swapper/408:10:2226
99839913229,73cyclictest0-21swapper/412:35:1226
99839913229,73cyclictest0-21swapper/412:35:1226
99839913229,69cyclictest0-21swapper/411:40:2326
99839913228,74cyclictest0-21swapper/412:02:0126
99839913228,68cyclictest0-21swapper/408:35:1826
99839913227,72cyclictest0-21swapper/410:38:2426
99839913220,74cyclictest0-21swapper/410:30:2126
100099913238,63cyclictest0-21swapper/810:23:3130
99949913124,66cyclictest0-21swapper/612:27:0828
99949913124,66cyclictest0-21swapper/612:27:0828
99839913133,77cyclictest0-21swapper/408:25:2026
99839913133,76cyclictest0-21swapper/408:00:1226
99839913132,75cyclictest0-21swapper/411:05:1426
99839913132,72cyclictest0-21swapper/409:15:0226
99839913131,73cyclictest0-21swapper/408:15:1426
99839913129,71cyclictest0-21swapper/411:55:2126
99839913129,71cyclictest0-21swapper/407:30:1926
99839913122,73cyclictest0-21swapper/409:35:2026
101109913123,75cyclictest0-21swapper/2610:06:2119
100099913118,89cyclictest27342-21memory10:55:1830
99839913033,77cyclictest0-21swapper/411:26:2826
99839913030,73cyclictest0-21swapper/411:15:1626
99839913029,67cyclictest0-21swapper/408:55:1926
99759913030,5cyclictest0-21swapper/309:49:5623
9983991290,81cyclictest0-21swapper/409:05:0226
10115991294,93cyclictest0-21swapper/2712:34:5820
10115991294,93cyclictest0-21swapper/2712:34:5820
10058991290,96cyclictest112-21ksoftirqd/1609:03:278
100099912922,58cyclictest0-21swapper/812:11:2830
10115991283,75cyclictest0-21swapper/2707:45:1820
100679912840,59cyclictest0-21swapper/1812:02:4410
99759912730,48cyclictest0-21swapper/311:21:5223
66562127119,6sleep150-21swapper/1507:05:187
66562127119,6sleep150-21swapper/1507:05:187
10115991274,75cyclictest0-21swapper/2710:39:3120
100679912741,64cyclictest0-21swapper/1811:07:4110
100679912737,62cyclictest0-21swapper/1809:37:5410
100679912728,63cyclictest0-21swapper/1809:55:0010
100679912727,60cyclictest0-21swapper/1809:12:4710
100399912717,62cyclictest0-21swapper/1307:43:275
100099912748,55cyclictest0-21swapper/812:29:3830
100099912748,55cyclictest0-21swapper/812:29:3830
99839912630,73cyclictest0-21swapper/407:50:0126
99839912629,70cyclictest0-21swapper/410:41:0426
10110991260,78cyclictest0-21swapper/2609:53:0119
100679912645,51cyclictest0-21swapper/1808:24:4110
100679912640,59cyclictest0-21swapper/1807:22:1010
100679912640,59cyclictest0-21swapper/1807:22:1010
100679912627,63cyclictest0-21swapper/1810:46:5110
100099912643,56cyclictest0-21swapper/807:10:1830
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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