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2026-03-29 - 22:10
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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 Sun Mar 29, 2026 12:49:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253999342145,4cyclictest151rcu_preempt12:35:1330
3273912460,238ptp4l0-21swapper/107:08:361
2694991793,36cyclictest151rcu_preempt11:15:2321
25629917515,118cyclictest18407-21ntp_kernel_pll_10:10:203
26309917338,1cyclictest151rcu_preempt09:25:2313
26309917338,1cyclictest151rcu_preempt09:25:2213
25629917015,114cyclictest0-21swapper/1107:50:413
26549916730,71cyclictest0-21swapper/2307:20:2116
250999164158,4cyclictest40-21ksoftirqd/409:29:1126
250999164158,4cyclictest40-21ksoftirqd/409:29:1126
322062163154,7sleep50-21swapper/507:05:2227
25099916024,113cyclictest151rcu_preempt09:30:1426
25099916024,113cyclictest151rcu_preempt09:30:1426
25629915916,85cyclictest0-21swapper/1112:39:283
25629915915,92cyclictest0-21swapper/1108:49:283
25629915915,92cyclictest0-21swapper/1108:49:283
25099915863,54cyclictest0-21swapper/411:59:4526
25699915413,113cyclictest0-21swapper/1211:51:094
25699915313,139cyclictest0-21swapper/1211:40:164
25699915313,129cyclictest23542-21diskmemload09:50:234
25699915313,128cyclictest0-21swapper/1210:13:544
25699915214,98cyclictest0-21swapper/1209:20:124
25699915214,98cyclictest0-21swapper/1209:20:114
25099915252,99cyclictest0-21swapper/409:50:2826
25699915113,92cyclictest0-21swapper/1212:35:174
25699915113,105cyclictest0-21swapper/1211:09:134
25149914861,5cyclictest151rcu_preempt11:38:2627
9582147140,6sleep180-21swapper/1807:05:3510
2509991470,87cyclictest0-21swapper/409:20:0126
2509991470,87cyclictest0-21swapper/409:20:0126
2611991430,84cyclictest0-21swapper/1710:05:229
2611991420,86cyclictest0-21swapper/1707:24:319
2611991420,84cyclictest0-21swapper/1711:26:049
2611991420,83cyclictest0-21swapper/1710:20:209
25099914258,36cyclictest0-21swapper/411:45:2626
25009914249,63cyclictest0-21swapper/310:49:2823
25009914231,66cyclictest0-21swapper/310:01:0523
25009914215,126cyclictest0-21swapper/310:22:4423
2611991410,83cyclictest0-21swapper/1711:45:199
2611991410,82cyclictest0-21swapper/1708:32:559
330891140132,6phc2sys0-21swapper/207:05:3612
27039914058,57cyclictest0-21swapper/2909:57:0122
27039914058,57cyclictest0-21swapper/2909:57:0122
27039914047,59cyclictest0-21swapper/2912:25:3622
26119914051,56cyclictest0-21swapper/1712:32:219
26119914050,58cyclictest0-21swapper/1710:12:199
2703991390,87cyclictest0-21swapper/2909:24:5722
2703991390,87cyclictest0-21swapper/2909:24:5722
2611991390,81cyclictest0-21swapper/1711:10:349
25629913915,78cyclictest0-21swapper/1109:31:043
25629913915,78cyclictest0-21swapper/1109:31:043
27039913830,64cyclictest0-21swapper/2909:37:1422
27039913830,64cyclictest0-21swapper/2909:37:1422
26549913830,65cyclictest151rcu_preempt09:44:3816
26549913830,65cyclictest151rcu_preempt09:44:3716
2618991380,90cyclictest0-21swapper/1809:30:0610
2618991380,90cyclictest0-21swapper/1809:30:0610
26119913846,69cyclictest0-21swapper/1711:20:159
26119913826,70cyclictest0-21swapper/1707:59:169
2611991380,81cyclictest0-21swapper/1708:00:199
25009913828,68cyclictest0-21swapper/307:10:2523
2500991380,80cyclictest0-21swapper/309:52:5023
27039913750,61cyclictest0-21swapper/2910:06:3922
27039913730,66cyclictest0-21swapper/2910:12:0022
27039913728,64cyclictest0-21swapper/2909:47:4122
27039913728,64cyclictest0-21swapper/2909:47:4122
2703991370,82cyclictest0-21swapper/2907:41:4922
26119913744,62cyclictest0-21swapper/1709:42:559
26119913744,62cyclictest0-21swapper/1709:42:559
26119913740,61cyclictest0-21swapper/1711:56:529
26119913738,60cyclictest0-21swapper/1711:35:109
26119913726,80cyclictest0-21swapper/1709:10:519
26119913726,80cyclictest0-21swapper/1709:10:519
25629913744,58cyclictest0-21swapper/1109:20:233
25629913744,58cyclictest0-21swapper/1109:20:223
25629913740,63cyclictest0-21swapper/1112:33:043
27039913656,70cyclictest0-21swapper/2912:03:4122
27039913629,64cyclictest0-21swapper/2909:41:3122
27039913629,64cyclictest0-21swapper/2909:41:3122
2703991360,82cyclictest0-21swapper/2911:59:5722
2703991360,81cyclictest0-21swapper/2908:28:5022
26119913657,62cyclictest0-21swapper/1709:46:419
26119913657,62cyclictest0-21swapper/1709:46:409
26119913646,59cyclictest0-21swapper/1710:27:499
25699913613,75cyclictest0-21swapper/1212:01:034
2569991360,84cyclictest0-21swapper/1211:45:174
25629913645,58cyclictest0-21swapper/1110:28:473
2562991360,82cyclictest0-21swapper/1110:02:053
27039913533,67cyclictest0-21swapper/2911:42:5122
27039913530,65cyclictest0-21swapper/2912:35:4522
27039913529,65cyclictest0-21swapper/2908:13:0922
26119913534,65cyclictest0-21swapper/1711:01:299
25629913554,59cyclictest0-21swapper/1110:57:553
25629913553,60cyclictest0-21swapper/1108:28:373
25629913551,57cyclictest0-21swapper/1111:58:023
25629913546,60cyclictest0-21swapper/1110:20:153
25009913526,64cyclictest0-21swapper/308:08:3823
27039913430,65cyclictest0-21swapper/2907:45:0122
27039913429,66cyclictest0-21swapper/2911:51:2422
27039913429,66cyclictest0-21swapper/2911:49:1522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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