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2025-09-13 - 17:23

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #2

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot2s.osadl.org (updated Sat Sep 13, 2025 12:48:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303957799293195,52cyclictest171rcu_preempt09:35:340
303957799293195,52cyclictest171rcu_preempt09:35:330
303957799281126,110cyclictest0-21swapper/010:05:360
303957799281126,110cyclictest0-21swapper/010:05:350
303957799280188,80cyclictest3093728-21/usr/sbin/munin11:51:550
303957799279149,114cyclictest0-21swapper/007:45:300
303957799279149,114cyclictest0-21swapper/007:45:290
303957799271143,111cyclictest0-21swapper/008:10:500
303957799269157,79cyclictest0-21swapper/009:15:590
303957799268139,111cyclictest0-21swapper/007:40:010
303957799268139,111cyclictest0-21swapper/007:40:010
303957799267175,79cyclictest0-21swapper/012:25:590
303957799267175,79cyclictest0-21swapper/012:25:590
303957799266131,96cyclictest3040402-21kworker/u10:1+events_unbound07:20:000
303957799265141,108cyclictest0-21swapper/011:57:000
303957799265137,111cyclictest0-21swapper/010:16:540
303957799265137,111cyclictest0-21swapper/010:16:540
303957799263169,66cyclictest171rcu_preempt10:47:110
303957799263148,99cyclictest0-21swapper/011:25:200
303957799263148,99cyclictest0-21swapper/011:25:200
303957799263141,107cyclictest0-21swapper/011:30:140
303957799263141,107cyclictest0-21swapper/011:30:140
303957799262195,54cyclictest0-21swapper/010:31:370
303957799262163,83cyclictest0-21swapper/012:05:550
303957799262149,91cyclictest3042104-21kworker/u10:6-rpciod07:30:110
303957799262137,111cyclictest3060222-21ntpq09:11:160
303957799262137,111cyclictest3060222-21ntpq09:11:150
303957799262133,114cyclictest3092533-21/usr/sbin/munin11:46:100
303957799261183,65cyclictest3065017-21latency_hist09:35:040
303957799261146,98cyclictest0-21swapper/009:41:570
303957799261146,98cyclictest0-21swapper/009:41:560
303957799261137,107cyclictest0-21swapper/010:40:000
303957799261130,115cyclictest0-21swapper/009:00:380
303957799260156,90cyclictest3087918-21ssh11:24:530
303957799260156,90cyclictest3087918-21ssh11:24:530
303957799260137,108cyclictest3098610-21apt-get12:15:240
303957799260137,108cyclictest3098610-21apt-get12:15:240
303957799260132,112cyclictest3063337-21memory09:25:550
303957799260132,112cyclictest3063337-21memory09:25:550
303957799259157,89cyclictest3086057-21grep11:15:340
303957799259157,89cyclictest3086057-21grep11:15:330
303957799259156,68cyclictest3047131-21cron07:55:010
303957799259148,95cyclictest0-21swapper/012:22:000
303957799259148,95cyclictest0-21swapper/012:21:590
303957799259138,107cyclictest3083274-21sh11:01:530
303957799259138,105cyclictest0-21swapper/008:30:540
303957799259132,106cyclictest3061831-21kworker/u9:6+rpciod09:21:470
303957799259132,106cyclictest3061831-21kworker/u9:6+rpciod09:21:460
303957799258144,98cyclictest3051438-21latency_hist08:20:050
303957799258144,98cyclictest3051438-21latency_hist08:20:040
303957799257149,92cyclictest0-21swapper/007:26:310
303957799257145,98cyclictest3052451-21sh08:25:360
303957799257145,98cyclictest3052451-21sh08:25:350
303957799256160,80cyclictest0-21swapper/009:56:500
303957799256160,80cyclictest0-21swapper/009:56:500
303957799256156,86cyclictest0-21swapper/011:40:010
303957799256156,86cyclictest0-21swapper/011:40:000
303957799256151,91cyclictest3056323-21timerwakeupswit08:47:050
303957799256146,96cyclictest3071046-21timerwakeupswit10:02:080
303957799256146,96cyclictest3071046-21timerwakeupswit10:02:080
303957799256132,109cyclictest0-21swapper/011:05:560
303957799255182,59cyclictest0-21swapper/008:05:410
303957799255182,59cyclictest0-21swapper/008:05:410
303957799255147,94cyclictest3095869-21proc_pri12:02:030
303957799255147,94cyclictest3095869-21proc_pri12:02:030
303957799255144,96cyclictest0-21swapper/010:54:140
303957799255144,96cyclictest0-21swapper/010:54:140
303957799255132,113cyclictest3097846-21ntpq12:11:250
303957799255132,113cyclictest3097846-21ntpq12:11:250
303957799254143,95cyclictest0-21swapper/012:40:010
303957799254138,100cyclictest0-21swapper/008:01:530
303957799253165,75cyclictest0-21swapper/010:45:080
303957799253150,88cyclictest0-21swapper/007:55:190
303957799253150,88cyclictest0-21swapper/007:55:180
303957799252148,87cyclictest0-21swapper/010:26:090
303957799252148,87cyclictest0-21swapper/010:26:090
303957799252147,90cyclictest0-21swapper/008:52:000
303957799252147,90cyclictest0-21swapper/008:51:590
303957799252133,104cyclictest3055133-21ntpq08:41:090
303957799252133,104cyclictest3055133-21ntpq08:41:090
303957799252131,105cyclictest3091547-21rm11:41:260
303957799252131,105cyclictest3091547-21rm11:41:260
303957799251154,67cyclictest0-21swapper/010:14:410
303957799251154,67cyclictest0-21swapper/010:14:400
303957799251147,87cyclictest0-21swapper/008:22:040
303957799251142,93cyclictest0-21swapper/011:00:010
303957799251142,93cyclictest0-21swapper/011:00:010
303957799251140,94cyclictest0-21swapper/012:32:140
303957799250148,85cyclictest0-21swapper/007:42:030
303957799250145,74cyclictest3053011-21kworker/u10:1-rpciod08:38:390
303957799250136,99cyclictest0-21swapper/009:46:440
303957799250130,87cyclictest3059375-21ntpq09:06:230
303957799250130,87cyclictest3059375-21ntpq09:06:230
303957799249152,83cyclictest3078733-21/usr/sbin/munin10:40:120
303957799249143,91cyclictest0-21swapper/011:10:570
303957799249143,91cyclictest0-21swapper/011:10:560
303957799249133,100cyclictest3039576-21cyclictest09:00:070
303957799249133,100cyclictest3039576-21cyclictest09:00:060
303957799249130,105cyclictest3042119-21/usr/sbin/munin07:25:030
303957799249130,105cyclictest3042119-21/usr/sbin/munin07:25:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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