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2026-09-24 - 01:07
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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 Wed Sep 23, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2447499796740,46cyclictest0-21swapper/007:10:120
243662792767,17sleep00-21swapper/007:09:180
2447599732686,13cyclictest24707-21sh07:10:121
241682560537,16sleep10-21swapper/107:07:201
24474995436,15cyclictest0-21swapper/008:25:190
2447599473409,39cyclictest20021-21cat08:25:191
2286991670,12rtkit-daemon2285-21rtkit-daemon10:58:001
2754521170,2sleep1251rcuc/109:54:281
24475999823,52cyclictest0-21swapper/108:39:591
24475999111,65cyclictest0-21swapper/110:19:001
24474998869,15cyclictest0-21swapper/011:24:590
24474998265,13cyclictest0-21swapper/012:02:590
152822820,4sleep015284-21gltestperf11:30:180
24474998162,14cyclictest0-21swapper/007:22:590
24475998014,49cyclictest0-21swapper/110:51:001
2447599755,54cyclictest6513-21ssh12:14:001
2447599753,53cyclictest10793-21runrttasks09:22:591
24474997142,25cyclictest0-21swapper/011:19:450
24474997130,36cyclictest27233-21runrttasks09:53:230
24474997047,15cyclictest0-21swapper/011:29:430
24474997046,17cyclictest0-21swapper/010:10:280
24474997031,21cyclictest20288-21ssh09:40:170
24474997029,18cyclictest22681-21munin-node10:45:150
24474997026,24cyclictest14101-21ssh12:27:060
24474997019,43cyclictest0-21swapper/012:30:180
228699700,12rtkit-daemon0-21swapper/010:36:341
100102700,6sleep00-21swapper/012:20:140
24474996940,22cyclictest0-21swapper/010:17:360
24474996937,26cyclictest9251-21aten2.4-expect10:20:140
24474996933,8cyclictest30459-21ssh10:59:110
24474996931,31cyclictest23370-21grep11:45:150
24474996929,33cyclictest2054-21grep11:05:210
24474996927,36cyclictest17928-21gltestperf11:35:170
24475996818,34cyclictest0-21swapper/109:28:591
24475996817,35cyclictest0-21swapper/108:32:591
24475996813,35cyclictest0-21swapper/107:36:001
24474996844,17cyclictest0-21swapper/009:15:270
24474996832,29cyclictest31835-21runrttasks10:00:300
24474996831,29cyclictest25696-21ksmtuned11:50:090
24474996830,31cyclictest12602-21ssh10:25:220
24474996829,30cyclictest3194-21diskmemload10:35:170
24474996825,36cyclictest17429-21kworker/0:111:04:310
228699680,3rtkit-daemon2285-21rtkit-daemon09:34:380
24475996715,35cyclictest0-21swapper/107:47:591
24475996715,33cyclictest0-21swapper/112:39:001
24475996713,40cyclictest0-21swapper/108:04:591
24474996743,17cyclictest0-21swapper/008:13:160
24474996731,9cyclictest23702-21ssh09:45:280
24474996730,30cyclictest11388-21idleruntime-cro09:25:010
24474996729,32cyclictest11819-21cpuspeed09:25:140
24475996617,35cyclictest0-21swapper/107:21:591
24475996616,34cyclictest0-21swapper/109:33:001
24475996615,34cyclictest0-21swapper/110:02:591
24475996612,37cyclictest0-21swapper/109:36:001
24474996633,8cyclictest9519-21munin-run12:20:000
24474996633,26cyclictest1568-21runrttasks08:06:420
24474996630,29cyclictest27887-21munin-node09:55:120
24474996629,30cyclictest15223-21sort10:30:240
24474996628,32cyclictest2447-21ssh12:05:230
24474996620,37cyclictest18001-21hostname08:20:150
24475996517,30cyclictest0-21swapper/111:42:591
24475996516,32cyclictest0-21swapper/112:04:591
24475996514,33cyclictest0-21swapper/110:41:591
24474996544,15cyclictest0-21swapper/008:15:120
24474996530,29cyclictest26453-21basename08:45:010
24474996527,32cyclictest26710-21sshd10:50:470
24474996526,30cyclictest6595-21latency_hist07:50:020
196952650,10sleep013-21rcu_preempt12:37:430
24475996417,32cyclictest0-21swapper/107:58:001
24475996416,36cyclictest0-21swapper/111:14:591
24475996414,34cyclictest0-21swapper/111:26:591
24474996443,16cyclictest0-21swapper/011:10:180
24474996438,19cyclictest0-21swapper/011:59:470
24474996429,28cyclictest20293-21munin-node11:40:250
24474996429,27cyclictest17063-21munin-node09:35:220
24474996426,31cyclictest32749-21ntp_states09:00:220
24474996425,33cyclictest5671-21ssh12:11:020
24474996424,22cyclictest2877-21ssh10:07:390
24474996414,44cyclictest0-21swapper/007:29:590
24475996320,33cyclictest0-21swapper/111:52:001
24475996319,33cyclictest0-21swapper/111:34:001
24475996318,30cyclictest0-21swapper/107:44:001
24475996317,32cyclictest0-21swapper/107:27:001
24475996316,34cyclictest0-21swapper/108:56:591
24475996316,34cyclictest0-21swapper/107:53:001
24474996328,15cyclictest10351-21munin-node08:00:200
24474996328,14cyclictest22217-21ssh10:44:020
24474996327,29cyclictest3366-21ssh09:10:130
24474996327,29cyclictest28494-21aten_r1power_fr08:50:130
24475996216,30cyclictest0-21swapper/112:06:591
24475996215,35cyclictest0-21swapper/111:22:001
24475996215,34cyclictest0-21swapper/108:14:591
24475996214,35cyclictest0-21swapper/111:56:001
24475996214,35cyclictest0-21swapper/107:17:001
24475996214,34cyclictest0-21swapper/108:24:591
24475996213,34cyclictest0-21swapper/109:56:591
24474996229,25cyclictest3383-21df07:40:140
24474996228,27cyclictest21190-21munin-node08:30:240
24474996227,9cyclictest3188-21crond09:10:000
24474996224,32cyclictest2029-21ntp_offset07:35:220
24474996222,32cyclictest10302-21latency_hist08:00:010
24475996117,33cyclictest0-21swapper/112:34:591
24475996117,32cyclictest0-21swapper/110:14:591
24475996116,32cyclictest0-21swapper/110:34:001
24474996129,8cyclictest28075-21munin-run07:20:010
24474996126,29cyclictest0-21swapper/007:30:220
24475996017,32cyclictest0-21swapper/112:27:001
24475996015,34cyclictest0-21swapper/109:14:591
24475996015,30cyclictest0-21swapper/112:23:001
24475996012,31cyclictest0-21swapper/112:17:001
24474996021,25cyclictest24682-21date08:40:010
24475995914,32cyclictest0-21swapper/109:03:001
24475995914,32cyclictest0-21swapper/107:34:001
24474995924,22cyclictest26625-21aten2.4-expect08:45:110
24474995923,30cyclictest30661-21idleruntime08:55:190
24475995815,30cyclictest0-21swapper/109:46:591
24475995814,28cyclictest0-21swapper/111:18:591
24475995813,32cyclictest0-21swapper/110:23:591
24474995829,23cyclictest6509-21runrttasks07:49:130
24475995714,32cyclictest0-21swapper/109:43:591
24475995713,31cyclictest0-21swapper/109:19:591
24475995618,27cyclictest0-21swapper/111:01:001
24475995614,30cyclictest0-21swapper/108:54:001
24475995613,29cyclictest0-21swapper/108:07:591
24475995517,29cyclictest0-21swapper/111:09:591
24475995514,29cyclictest0-21swapper/110:06:001
24475995514,28cyclictest0-21swapper/110:48:001
24475995413,34cyclictest0-21swapper/108:16:591
24475995413,28cyclictest0-21swapper/111:35:591
24475995314,28cyclictest0-21swapper/110:27:591
24475995312,29cyclictest0-21swapper/109:06:591
24475995311,31cyclictest0-21swapper/108:47:591
24475995219,26cyclictest0-21swapper/108:40:281
24475995012,32cyclictest0-21swapper/111:46:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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