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2026-07-22 - 21:49
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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 Jul 22, 2026 12:49:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2278099325128,31cyclictest151rcu_preempt10:47:4917
2278099325128,31cyclictest151rcu_preempt10:47:4917
3273912970,288ptp4l0-21swapper/107:07:101
210922216209,6sleep70-21swapper/707:05:4229
330891200192,6phc2sys0-21swapper/207:06:1312
226689917612,144cyclictest0-21swapper/909:52:4331
226689917612,144cyclictest0-21swapper/909:52:4331
226989915958,98cyclictest0-21swapper/1312:30:145
226689915812,98cyclictest0-21swapper/912:07:5631
226689915312,98cyclictest0-21swapper/907:10:1631
226689915312,85cyclictest0-21swapper/910:27:3431
226689915312,85cyclictest0-21swapper/910:27:3431
226209915214,85cyclictest0-21swapper/309:10:2123
227689915133,90cyclictest151rcu_preempt09:16:4715
226689914712,84cyclictest0-21swapper/912:31:2731
226209914714,80cyclictest0-21swapper/312:06:1423
22805991450,84cyclictest0-21swapper/2712:10:2220
226689914312,78cyclictest0-21swapper/911:50:1731
22620991430,87cyclictest0-21swapper/312:31:2023
22796991400,86cyclictest0-21swapper/2612:28:3119
22698991400,83cyclictest0-21swapper/1311:25:145
22668991390,85cyclictest0-21swapper/909:56:2731
22668991390,85cyclictest0-21swapper/909:56:2731
227969913715,71cyclictest0-21swapper/2612:06:3719
22631991360,84cyclictest0-21swapper/410:36:3926
22631991360,84cyclictest0-21swapper/410:36:3926
227059913538,61cyclictest0-21swapper/1411:46:386
226209913514,98cyclictest0-21swapper/309:56:5323
226209913514,98cyclictest0-21swapper/309:56:5323
227059913427,81cyclictest0-21swapper/1409:17:306
226319913452,53cyclictest40-21ksoftirqd/411:37:1426
226209913314,87cyclictest0-21swapper/310:07:0223
226209913314,87cyclictest0-21swapper/310:07:0223
228059913228,74cyclictest0-21swapper/2708:55:0020
227059913126,104cyclictest0-21swapper/1412:19:146
227059913126,104cyclictest0-21swapper/1411:12:266
226989913130,61cyclictest0-21swapper/1309:34:045
226689913112,73cyclictest0-21swapper/910:03:2431
226689913112,73cyclictest0-21swapper/910:03:2431
227689913034,91cyclictest151rcu_preempt07:15:4915
227059913026,71cyclictest0-21swapper/1410:41:256
227059913026,71cyclictest0-21swapper/1410:41:256
22631991300,76cyclictest0-21swapper/410:05:1526
22631991300,76cyclictest0-21swapper/410:05:1526
22620991301,75cyclictest0-21swapper/309:30:4223
227209912945,55cyclictest0-21swapper/1611:29:188
227059912929,49cyclictest0-21swapper/1409:36:136
228059912849,72cyclictest0-21swapper/2710:40:2220
228059912849,72cyclictest0-21swapper/2710:40:2220
226989912821,21cyclictest0-21swapper/1310:41:575
226989912821,21cyclictest0-21swapper/1310:41:575
226689912841,58cyclictest0-21swapper/912:26:3831
226689912812,83cyclictest0-21swapper/911:40:4031
226989912742,58cyclictest0-21swapper/1308:55:035
226689912747,53cyclictest0-21swapper/911:13:2531
226209912717,62cyclictest0-21swapper/312:39:3723
227209912626,57cyclictest0-21swapper/1611:47:078
227059912634,46cyclictest0-21swapper/1409:52:166
227059912634,46cyclictest0-21swapper/1409:52:166
226689912627,67cyclictest0-21swapper/908:05:1831
227209912574,49cyclictest0-21swapper/1611:35:218
227059912522,68cyclictest0-21swapper/1412:06:256
226689912553,61cyclictest0-21swapper/907:45:3231
226689912547,53cyclictest0-21swapper/907:27:2231
226689912542,54cyclictest0-21swapper/911:46:0131
226689912528,66cyclictest0-21swapper/907:23:0531
226319912512,68cyclictest0-21swapper/410:26:1626
226319912512,68cyclictest0-21swapper/410:26:1626
228059912441,51cyclictest0-21swapper/2711:51:4020
22796991240,74cyclictest0-21swapper/2609:25:4519
22796991240,74cyclictest0-21swapper/2609:25:4419
227209912423,57cyclictest0-21swapper/1610:12:018
227209912423,57cyclictest0-21swapper/1610:12:018
22720991240,76cyclictest0-21swapper/1609:25:238
22720991240,76cyclictest0-21swapper/1609:25:238
226689912446,55cyclictest0-21swapper/912:18:0531
226689912436,56cyclictest0-21swapper/911:20:2231
226689912427,65cyclictest0-21swapper/909:48:5831
226689912426,64cyclictest0-21swapper/912:23:2731
227809912336,57cyclictest0-21swapper/2411:50:5317
227209912338,56cyclictest0-21swapper/1610:44:008
227209912338,56cyclictest0-21swapper/1610:44:008
22720991230,77cyclictest0-21swapper/1608:33:328
226689912346,59cyclictest0-21swapper/910:24:4731
226689912346,59cyclictest0-21swapper/910:24:4731
226689912325,63cyclictest0-21swapper/912:37:2031
227209912238,56cyclictest0-21swapper/1610:04:378
227209912238,56cyclictest0-21swapper/1610:04:378
227209912227,63cyclictest0-21swapper/1609:32:528
227209912224,73cyclictest0-21swapper/1610:15:368
227209912224,73cyclictest0-21swapper/1610:15:368
226989912227,63cyclictest0-21swapper/1312:29:555
226989912226,62cyclictest0-21swapper/1312:11:445
226689912230,67cyclictest0-21swapper/909:21:5931
226689912229,68cyclictest0-21swapper/909:14:4631
226689912228,66cyclictest0-21swapper/910:45:0531
226689912228,66cyclictest0-21swapper/910:45:0531
226689912227,67cyclictest0-21swapper/911:34:4731
226689912227,66cyclictest0-21swapper/909:30:1631
226689912227,63cyclictest0-21swapper/912:10:3631
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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