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2026-08-24 - 13:30
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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 highest latencies:
System rack1slot8.osadl.org (updated Mon Aug 24, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7709999624,944cyclictest0-21swapper/007:10:030
770999856781,39cyclictest15727-21strings07:30:190
74412849825,14sleep10-21swapper/107:07:401
771099842797,30cyclictest0-21swapper/107:30:191
72142391365,18sleep00-21swapper/007:05:260
7709997240,16cyclictest0-21swapper/009:10:220
7709996731,29cyclictest0-21swapper/011:39:300
7709996731,29cyclictest0-21swapper/010:29:390
7709996641,17cyclictest0-21swapper/009:50:010
7709996628,9cyclictest25932-21memory12:20:180
7709996623,37cyclictest19477-21idleruntime-cro11:10:010
7709996340,16cyclictest0-21swapper/011:34:120
7709996327,29cyclictest14766-21ssh12:00:150
7709996238,18cyclictest0-21swapper/012:05:200
7709996236,20cyclictest0-21swapper/012:30:270
7709996235,21cyclictest0-21swapper/009:25:000
7709996225,10cyclictest3746-21ssh10:40:160
7709996221,35cyclictest18312-21runrttasks09:06:000
7709996220,15cyclictest6063-21ssh11:44:460
228699620,4rtkit-daemon2285-21rtkit-daemon12:27:470
7709996139,16cyclictest0-21swapper/009:55:190
7709996131,25cyclictest88850irq/46-eth0-tx-12:11:500
7709996128,8cyclictest22176-21munin-run11:15:000
7709996124,32cyclictest18724-21diskmemload10:13:470
7709996121,16cyclictest10845-21ssh10:53:170
7709996119,36cyclictest24905-21ssh12:19:160
7709996117,38cyclictest12259-21ps07:20:230
7709996025,9cyclictest29446-21ssh11:27:000
7709996025,29cyclictest0-21swapper/009:43:110
7709996025,11cyclictest16742-21ssh11:04:570
7709996023,31cyclictest18724-21diskmemload09:30:010
7709996023,20cyclictest1820-21ssh12:35:220
7709996023,10cyclictest6664-21ssh11:45:150
7709996022,31cyclictest32207-21runrttasks09:33:520
7709996020,17cyclictest13138-21ssh11:56:020
7709996017,37cyclictest8379-21ssh10:49:070
7709996015,38cyclictest0-21swapper/010:05:140
7709995932,22cyclictest26926-21ssh10:23:320
7709995928,25cyclictest12064-21grep08:50:170
7709995928,25cyclictest0-21swapper/009:16:460
7709995924,29cyclictest19269-21load07:40:170
7709995921,11cyclictest1146-21ssh10:35:190
7709995919,35cyclictest0-21swapper/011:15:190
7709995837,16cyclictest0-21swapper/009:35:120
7709995828,9cyclictest9050-21munin-node11:50:240
7709995825,9cyclictest7885-21idleruntime-cro08:40:000
7709995822,10cyclictest14089-21ssh11:00:010
228699580,5rtkit-daemon2285-21rtkit-daemon09:51:120
7709995735,17cyclictest0-21swapper/008:40:110
7709995721,26cyclictest31312-21munin-node08:15:110
7709995719,32cyclictest24345-21sh10:19:010
7710995638,13cyclictest21714-21ssh10:14:161
7710995637,12cyclictest27030-21grep08:00:281
7709995628,22cyclictest13988-21munin-node10:00:160
7709995625,25cyclictest0-21swapper/008:30:170
7709995624,27cyclictest29510-21munin-node08:10:260
7709995621,30cyclictest29279-21taskset08:09:190
7709995621,30cyclictest25725-21latency_hist08:00:010
7709995620,30cyclictest2626-21munin-node08:25:130
7709995617,33cyclictest0-21swapper/011:20:280
7710995541,9cyclictest7181-21ps09:45:501
7710995541,9cyclictest27716-21if_eth009:25:171
7710995541,9cyclictest15817-21ssh12:00:561
7710995540,9cyclictest23031-21munin-node10:15:221
7710995539,10cyclictest23111-21if_eth012:15:171
770999555,43cyclictest0-21swapper/009:00:110
7709995520,29cyclictest9844-21munin-node08:45:280
7709995519,30cyclictest990-21munin-node08:20:150
7709995519,30cyclictest30244-21ssh10:30:070
7710995439,9cyclictest10292-21ssh09:52:141
7710995439,10cyclictest2695-21ssh09:39:071
7710995438,10cyclictest32438-21unixbench_singl08:15:251
7709995417,31cyclictest13448-21munin-node08:55:160
7710995339,9cyclictest2790-21ssh10:38:331
770999535,42cyclictest0-21swapper/007:25:150
7709995332,16cyclictest0-21swapper/007:20:010
7709995332,16cyclictest0-21swapper/007:20:000
7710995238,9cyclictest29747-21ssh11:28:021
7710995238,9cyclictest27698-21ssh12:24:351
7710995237,9cyclictest3867-21basename10:40:181
7709995231,16cyclictest0-21swapper/008:00:170
7709995221,26cyclictest23162-21chrt07:50:220
7709995221,25cyclictest22128-21idleruntime-cro07:50:000
7710995137,9cyclictest8190-21gltestperf07:10:161
7710995137,9cyclictest30653-21cat09:30:201
770999515,39cyclictest0-21swapper/007:35:260
7710995037,9cyclictest31262-21timerandwakeup10:30:271
7710995036,9cyclictest9860-21timerwakeupswit10:50:241
7710995036,9cyclictest8496-21ssh10:49:321
7710995036,9cyclictest29013-21sh12:25:241
7710995036,9cyclictest18859-21ssh11:07:521
7710995035,10cyclictest16580-21ksmtuned09:01:441
7710995011,31cyclictest0-21swapper/112:30:161
7710994936,9cyclictest26716-21ssh11:21:551
7710994935,10cyclictest32651-21ssh11:33:431
7710994932,12cyclictest14021-21ssh10:59:591
7710994912,29cyclictest0-21swapper/108:50:251
7710994835,9cyclictest18193-21awk09:05:251
7710994834,9cyclictest25673-21ssh09:20:391
7710994834,9cyclictest19298-21ssh12:08:331
7710994834,9cyclictest1637-21if_eth012:35:171
7710994824,18cyclictest0-21swapper/112:15:011
7710994823,18cyclictest0-21swapper/109:15:281
7710994812,27cyclictest0-21swapper/108:10:191
7710994810,30cyclictest0-21swapper/108:45:011
7710994810,30cyclictest0-21swapper/108:30:151
7710994810,30cyclictest0-21swapper/107:40:151
771099475,36cyclictest0-21swapper/111:38:191
7710994732,8cyclictest21791-21ssh11:13:401
7710994729,14cyclictest28112-21cut10:25:181
7710994729,13cyclictest14212-21ssh11:00:091
7710994726,14cyclictest0-21swapper/110:05:261
7710994723,17cyclictest0-21swapper/108:35:171
7710994711,30cyclictest0-21swapper/110:23:331
7710994711,29cyclictest0-21swapper/111:58:271
7710994711,29cyclictest0-21swapper/111:16:291
7710994710,31cyclictest0-21swapper/107:38:061
771099469,31cyclictest0-21swapper/111:47:341
771099467,33cyclictest0-21swapper/107:53:041
7710994632,9cyclictest24413-21gltestperf07:55:151
7710994611,28cyclictest0-21swapper/109:55:151
7710994611,18cyclictest0-21swapper/109:10:211
771099457,32cyclictest0-21swapper/110:03:541
7710994530,9cyclictest4877-21ssh09:42:171
7710994525,16cyclictest0-21swapper/108:45:141
7710994522,17cyclictest0-21swapper/111:50:041
7710994522,17cyclictest0-21swapper/108:55:231
7710994511,28cyclictest0-21swapper/108:05:141
7710994511,26cyclictest0-21swapper/108:20:181
7710994510,27cyclictest0-21swapper/107:15:141
7710994510,27cyclictest0-21swapper/107:15:131
771099448,28cyclictest0-21swapper/108:25:121
7710994432,8cyclictest1568-21runrttasks11:43:091
7710994422,16cyclictest0-21swapper/107:45:201
7710994411,26cyclictest0-21swapper/107:25:191
7710994410,27cyclictest0-21swapper/107:20:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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