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2025-05-02 - 12:48
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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 50 highest latencies:
System rack1slot8.osadl.org (updated Fri May 02, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295709918691792,38cyclictest16781-21ssh21:23:470
2957099899831,44cyclictest0-21swapper/022:44:220
2957099899831,44cyclictest0-21swapper/022:44:210
2957199897829,37cyclictest0-21swapper/122:44:211
2957199897829,37cyclictest0-21swapper/122:44:211
294342864846,12sleep10-21swapper/119:09:001
292632797774,16sleep00-21swapper/019:07:190
2957099517434,76cyclictest0-21swapper/019:10:190
2957199474415,22cyclictest30233-21munin-node19:10:201
2957199436393,28cyclictest0-21swapper/121:23:471
2957099752,66cyclictest19915-21ssh21:29:100
29570997512,58cyclictest7290-21latency_hist23:55:000
29570997511,56cyclictest0-21swapper/022:00:440
2957099746,60cyclictest0-21swapper/019:45:210
29571997354,13cyclictest0-21swapper/121:00:521
2957099733,43cyclictest23231-21ssh23:25:240
2957099724,61cyclictest20776-21ssh22:25:220
2957099723,46cyclictest2927-21ssh21:55:160
2957099715,51cyclictest0-21swapper/019:40:310
2957099715,51cyclictest0-21swapper/019:40:310
2957099715,38cyclictest17262-21ssh23:15:210
2957099712,63cyclictest1427-21runrttasks19:34:340
2957099712,53cyclictest31524-21munin-node00:35:240
29570997118,47cyclictest78950irq/46-eth0-tx-00:07:120
29570997118,46cyclictest0-21swapper/022:10:110
29570997117,48cyclictest78950irq/46-eth0-tx-23:49:540
29570997117,35cyclictest26968-21cat22:35:270
2957099709,55cyclictest78950irq/46-eth0-tx-00:19:140
2957099707,56cyclictest78950irq/46-eth0-tx-21:51:320
2957099705,50cyclictest0-21swapper/021:00:580
2957099704,59cyclictest0-21swapper/023:06:510
2957099702,62cyclictest705-21latency_hist19:20:020
2957099702,61cyclictest7983-21ssh23:00:080
29570997013,51cyclictest10144-21latency_hist00:00:010
29570997012,51cyclictest78950irq/46-eth0-tx-23:32:000
2957099698,55cyclictest78950irq/46-eth0-tx-22:56:060
2957099697,56cyclictest78950irq/46-eth0-tx-00:00:200
2957099693,43cyclictest785-21ssh22:46:340
2957099692,7cyclictest18820-21latency_hist00:15:010
2957099692,60cyclictest19591-21ssh23:20:100
2957099692,60cyclictest17255-21munin-node20:05:200
2957099692,6cyclictest3325-21timerwakeupswit22:50:290
2957099692,6cyclictest3325-21timerwakeupswit22:50:280
2957199683,57cyclictest31276-21munin-node00:35:191
2957199682,59cyclictest21819-21sh22:26:511
2957099685,47cyclictest0-21swapper/000:25:290
2957099685,46cyclictest0-21swapper/021:18:300
2957099684,57cyclictest0-21swapper/021:11:140
2957099683,58cyclictest8244-21diskmemload21:44:510
2957099683,38cyclictest23757-21ssh22:30:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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