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2026-04-01 - 20:44
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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 Apr 01, 2026 12:48:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912220,212ptp4l0-21swapper/107:08:311
3273912220,212ptp4l0-21swapper/107:08:301
189062213205,6sleep290-21swapper/2907:05:1322
189062213205,6sleep290-21swapper/2907:05:1222
330891211202,6phc2sys0-21swapper/207:05:1912
330891211202,6phc2sys0-21swapper/207:05:1812
24926991560,101cyclictest31386-21/usr/sbin/munin12:20:1625
248799914750,73cyclictest0-21swapper/2109:42:2614
249029914462,81cyclictest0-21swapper/2608:03:0719
248379914426,94cyclictest0-21swapper/1610:42:138
24804991420,85cyclictest0-21swapper/1109:20:213
249149914131,66cyclictest0-21swapper/2911:11:4922
249109914159,42cyclictest0-21swapper/2812:00:1621
24804991410,84cyclictest0-21swapper/1110:30:233
24788991410,86cyclictest0-21swapper/809:26:5130
249149914031,65cyclictest0-21swapper/2907:21:3022
249149914031,65cyclictest0-21swapper/2907:21:2922
249149914030,65cyclictest0-21swapper/2908:28:3322
24864991400,82cyclictest0-21swapper/1912:01:2211
24804991400,85cyclictest0-21swapper/1111:55:583
249149913953,60cyclictest0-21swapper/2912:02:0422
248799913936,74cyclictest9345-21taskset08:11:1914
248049913951,54cyclictest0-21swapper/1110:19:463
24804991390,81cyclictest0-21swapper/1107:55:243
249149913845,61cyclictest0-21swapper/2910:55:1522
249149913831,68cyclictest0-21swapper/2910:28:0022
249149913829,67cyclictest0-21swapper/2907:10:1922
249149913829,67cyclictest0-21swapper/2907:10:1922
249149913829,65cyclictest0-21swapper/2910:43:3022
249149913829,65cyclictest0-21swapper/2909:57:1922
249149913829,63cyclictest0-21swapper/2909:40:1022
249149913827,65cyclictest0-21swapper/2908:15:2722
24804991380,86cyclictest0-21swapper/1110:24:023
24804991380,84cyclictest0-21swapper/1107:30:173
24804991380,84cyclictest0-21swapper/1107:30:163
249149913749,60cyclictest0-21swapper/2912:17:0222
249149913730,62cyclictest0-21swapper/2909:32:1522
249149913729,64cyclictest0-21swapper/2911:36:2522
249149913729,61cyclictest0-21swapper/2908:00:1822
24804991370,80cyclictest0-21swapper/1110:05:143
24804991370,78cyclictest0-21swapper/1112:10:133
247829913727,76cyclictest0-21swapper/707:20:1729
247829913727,76cyclictest0-21swapper/707:20:1729
249149913648,59cyclictest0-21swapper/2907:55:2522
249149913637,65cyclictest0-21swapper/2907:45:0022
249149913637,65cyclictest0-21swapper/2907:45:0022
249149913630,66cyclictest0-21swapper/2911:19:5022
249149913630,63cyclictest0-21swapper/2911:46:0322
249149913627,66cyclictest0-21swapper/2911:07:3422
247829913642,61cyclictest0-21swapper/711:15:2229
247829913641,62cyclictest0-21swapper/711:46:4329
249149913541,66cyclictest0-21swapper/2908:50:1222
249149913529,64cyclictest0-21swapper/2909:45:1522
249149913529,62cyclictest0-21swapper/2912:07:2522
249149913527,66cyclictest0-21swapper/2911:53:3222
248799913558,48cyclictest0-21swapper/2108:01:2114
24804991350,85cyclictest0-21swapper/1112:15:533
249149913438,61cyclictest0-21swapper/2907:45:1922
249149913438,61cyclictest0-21swapper/2907:45:1822
249149913431,65cyclictest0-21swapper/2907:37:3222
249149913431,65cyclictest0-21swapper/2907:37:3122
249149913430,69cyclictest0-21swapper/2907:25:1422
249149913430,69cyclictest0-21swapper/2907:25:1422
249149913430,59cyclictest0-21swapper/2911:56:1122
249149913428,63cyclictest0-21swapper/2912:33:3722
248799913450,58cyclictest0-21swapper/2110:58:2014
248799913440,60cyclictest0-21swapper/2111:20:1014
248049913430,67cyclictest0-21swapper/1111:15:173
24804991340,84cyclictest0-21swapper/1110:28:543
24804991340,78cyclictest0-21swapper/1110:01:293
247829913447,59cyclictest0-21swapper/711:33:5429
247829913422,72cyclictest0-21swapper/712:01:5729
249149913325,63cyclictest0-21swapper/2912:20:4622
24914991330,81cyclictest0-21swapper/2910:24:4722
248049913362,64cyclictest0-21swapper/1109:58:183
248049913331,65cyclictest0-21swapper/1108:55:143
248049913330,64cyclictest0-21swapper/1110:54:253
247829913328,61cyclictest0-21swapper/708:45:0129
249149913230,65cyclictest0-21swapper/2910:15:1022
249149913228,61cyclictest0-21swapper/2909:15:1922
248799913246,56cyclictest0-21swapper/2108:27:3714
248799913243,60cyclictest0-21swapper/2107:21:2214
248799913243,60cyclictest0-21swapper/2107:21:2214
24879991321,104cyclictest0-21swapper/2111:45:2114
248799913150,54cyclictest0-21swapper/2109:59:5014
248799913142,67cyclictest0-21swapper/2111:01:2714
248799913140,60cyclictest0-21swapper/2110:15:0214
248799913135,62cyclictest0-21swapper/2108:07:1914
248799913125,105cyclictest0-21swapper/2111:58:4314
248049913128,65cyclictest0-21swapper/1111:25:263
24804991310,78cyclictest0-21swapper/1108:40:153
249149913029,60cyclictest0-21swapper/2911:23:0422
248799913028,64cyclictest0-21swapper/2108:51:4114
248799913025,66cyclictest0-21swapper/2108:36:4214
248799913025,63cyclictest0-21swapper/2107:10:0814
248799913025,63cyclictest0-21swapper/2107:10:0814
248379913026,76cyclictest0-21swapper/1612:12:548
248049913030,65cyclictest0-21swapper/1111:20:043
247829913029,72cyclictest0-21swapper/711:29:0329
247829913029,69cyclictest0-21swapper/712:13:0929
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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