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2026-03-25 - 18:10
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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 Wed Mar 25, 2026 12:49:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912780,270ptp4l0-21swapper/107:05:471
158569926970,198cyclictest151rcu_preempt12:30:0213
15914991860,185cyclictest0-21swapper/3109:55:5625
159089915932,71cyclictest0-21swapper/3011:30:4824
159089915819,103cyclictest0-21swapper/3008:35:1324
157809915530,67cyclictest0-21swapper/309:52:1623
15914991496,86cyclictest0-21swapper/3111:57:1525
15914991496,86cyclictest0-21swapper/3111:57:1425
330891147138,7phc2sys0-21swapper/207:05:0212
159089914632,83cyclictest0-21swapper/3007:38:5324
159089914632,83cyclictest0-21swapper/3007:38:5324
15818991460,86cyclictest0-21swapper/1310:20:135
159089914411,74cyclictest0-21swapper/3010:30:0724
15839991440,84cyclictest0-21swapper/1712:37:079
15839991440,84cyclictest0-21swapper/1712:37:079
158449914332,57cyclictest0-21swapper/1809:48:4610
158749914297,28cyclictest0-21swapper/2410:42:3917
159149914035,76cyclictest0-21swapper/3109:20:5725
15878991400,80cyclictest0-21swapper/2511:07:2718
142732140133,6sleep210-21swapper/2107:05:3514
159089913832,69cyclictest0-21swapper/3007:45:1724
159089913832,69cyclictest0-21swapper/3007:45:1624
158349913820,91cyclictest0-21swapper/1610:43:158
158349913819,118cyclictest0-21swapper/1609:43:598
15839991370,84cyclictest0-21swapper/1712:33:389
15839991370,84cyclictest0-21swapper/1712:33:379
15834991370,79cyclictest0-21swapper/1607:25:178
15834991370,79cyclictest0-21swapper/1607:25:178
159149913620,86cyclictest0-21swapper/3111:27:2025
15908991364,79cyclictest0-21swapper/3012:07:2424
15908991360,85cyclictest0-21swapper/3011:58:5124
15908991360,85cyclictest0-21swapper/3011:58:5024
158449913647,59cyclictest0-21swapper/1812:32:5110
158449913647,59cyclictest0-21swapper/1812:32:5110
15839991360,79cyclictest0-21swapper/1708:40:519
158349913619,82cyclictest0-21swapper/1612:35:478
158349913619,82cyclictest0-21swapper/1612:35:478
158349913619,115cyclictest0-21swapper/1609:17:338
158349913618,98cyclictest0-21swapper/1611:52:328
159149913524,67cyclictest0-21swapper/3110:04:2925
158449913555,61cyclictest0-21swapper/1809:14:3410
158449913551,57cyclictest0-21swapper/1812:09:3510
158349913519,76cyclictest0-21swapper/1610:30:158
157969913532,102cyclictest0-21swapper/709:59:2529
159149913450,54cyclictest0-21swapper/3111:10:1425
158609913412,43cyclictest0-21swapper/2109:35:2814
157969913432,69cyclictest0-21swapper/710:27:0429
159149913350,60cyclictest0-21swapper/3111:22:3125
159089913342,61cyclictest0-21swapper/3008:17:3524
158349913320,98cyclictest0-21swapper/1610:16:328
159149913245,66cyclictest0-21swapper/3109:39:5425
159149913230,71cyclictest0-21swapper/3110:31:4525
159149913227,63cyclictest0-21swapper/3112:23:5825
159149913227,63cyclictest0-21swapper/3112:23:5825
158609913212,118cyclictest0-21swapper/2112:04:0114
158449913225,67cyclictest0-21swapper/1812:29:0710
158449913225,67cyclictest0-21swapper/1812:29:0710
159149913150,53cyclictest0-21swapper/3110:46:1025
159149913129,71cyclictest0-21swapper/3110:25:1925
159149913127,68cyclictest0-21swapper/3108:35:1425
159149913127,65cyclictest0-21swapper/3109:08:5325
159089913145,55cyclictest0-21swapper/3011:49:1324
158609913112,72cyclictest0-21swapper/2109:11:2014
158609913112,118cyclictest0-21swapper/2110:38:3014
158449913153,55cyclictest0-21swapper/1807:35:0910
158449913153,55cyclictest0-21swapper/1807:35:0910
158449913150,58cyclictest0-21swapper/1810:58:4710
158449913147,56cyclictest0-21swapper/1807:25:0210
158449913147,56cyclictest0-21swapper/1807:25:0210
158349913120,61cyclictest6918-21latency_hist11:25:018
157969913129,82cyclictest0-21swapper/709:50:4229
159149913028,69cyclictest0-21swapper/3111:42:5025
159149913027,67cyclictest0-21swapper/3110:13:3425
159149913026,59cyclictest0-21swapper/3111:51:2225
158609913012,77cyclictest0-21swapper/2111:01:1414
158609913012,74cyclictest0-21swapper/2111:43:4414
158609913012,115cyclictest0-21swapper/2111:25:3314
158449913045,55cyclictest0-21swapper/1811:10:3310
159149912930,72cyclictest0-21swapper/3110:40:5025
159149912929,69cyclictest0-21swapper/3110:23:1225
159149912928,67cyclictest0-21swapper/3112:18:0625
159149912928,67cyclictest0-21swapper/3112:18:0525
159089912952,72cyclictest0-21swapper/3008:01:5124
159089912952,72cyclictest0-21swapper/3008:01:5124
158609912912,84cyclictest0-21swapper/2112:30:4614
158609912912,84cyclictest0-21swapper/2112:30:4514
158609912912,81cyclictest0-21swapper/2112:18:5514
158609912912,81cyclictest0-21swapper/2112:18:5514
158609912912,72cyclictest0-21swapper/2110:08:0414
158609912912,70cyclictest0-21swapper/2111:06:1814
158609912912,70cyclictest0-21swapper/2109:28:3114
158609912912,115cyclictest0-21swapper/2112:29:3714
158609912912,115cyclictest0-21swapper/2112:29:3714
158449912946,53cyclictest0-21swapper/1811:34:3610
158449912927,70cyclictest0-21swapper/1811:44:4510
158449912927,64cyclictest0-21swapper/1811:51:4110
157969912926,80cyclictest0-21swapper/710:18:2129
159149912832,55cyclictest0-21swapper/3108:30:2525
159149912831,69cyclictest0-21swapper/3109:11:0125
159149912828,66cyclictest0-21swapper/3112:30:2425
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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