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2026-06-16 - 14:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Tue Jun 16, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
700521570,3sleep10-21swapper/110:13:001
700521570,3sleep10-21swapper/110:13:001
277321260,2sleep00-21swapper/008:33:140
277321260,2sleep00-21swapper/008:33:140
277321260,2sleep00-21swapper/008:33:140
2038821220,3sleep30-21swapper/310:48:083
2038821220,3sleep30-21swapper/310:48:083
3251821050,2sleep032024-21/usr/sbin/munin09:53:090
3251821050,2sleep032024-21/usr/sbin/munin09:53:090
3251821050,2sleep032024-21/usr/sbin/munin09:53:090
2985921010,2sleep30-21swapper/308:18:173
2985921010,2sleep30-21swapper/308:18:173
2985921010,2sleep30-21swapper/308:18:173
171882790,4sleep30-21swapper/312:03:173
171882790,4sleep30-21swapper/312:03:173
171882790,4sleep30-21swapper/312:03:173
153872720,2sleep30-21swapper/311:58:193
153872720,2sleep30-21swapper/311:58:193
153872720,2sleep30-21swapper/311:58:193
72452710,2sleep20-21swapper/207:18:142
323702710,3sleep30-21swapper/309:53:083
323702710,3sleep30-21swapper/309:53:083
323702710,3sleep30-21swapper/309:53:083
262942640,2sleep30-21swapper/312:28:183
262942640,2sleep30-21swapper/312:28:183
323592620,2sleep00-21swapper/011:18:160
323592620,2sleep00-21swapper/011:18:160
48132610,3chrt0-21swapper/311:33:063
48132610,3chrt0-21swapper/311:33:063
262302600,2chrt26229-21tail11:03:080
262302600,2chrt26229-21tail11:03:080
269542550,2sleep126958-21wc11:03:171
269542550,2sleep126958-21wc11:03:171
224462510,3sleep30-21swapper/312:18:173
224462510,3sleep30-21swapper/312:18:173
210502510,3sleep30-21swapper/309:23:103
210502510,3sleep30-21swapper/309:23:103
108312510,3chrt0-21swapper/307:28:123
108312510,3chrt0-21swapper/307:28:123
61812490,3sleep20-21swapper/208:43:092
61812490,3sleep20-21swapper/208:43:092
97642460,3chrt0-21swapper/310:18:133
97642460,3chrt0-21swapper/310:18:133
262012440,3sleep20-21swapper/212:28:172
262012440,3sleep20-21swapper/212:28:172
22222390,2sleep20-21swapper/211:23:202
22222390,2sleep20-21swapper/211:23:202
4622993732,3cyclictest23253-21latency_hist12:22:550
4622993732,3cyclictest23253-21latency_hist12:22:550
4622993730,6cyclictest8056-21sendmail07:22:550
4622993730,5cyclictest21423-21unixbench-2d10:48:180
4622993730,5cyclictest21423-21unixbench-2d10:48:180
4622993730,5cyclictest21423-21unixbench-2d10:48:180
4622993629,5cyclictest21064-21fschecks_time09:23:100
4622993629,5cyclictest21064-21fschecks_time09:23:100
4622993623,11cyclictest0-21swapper/010:23:080
4622993623,11cyclictest0-21swapper/010:23:080
4622993529,4cyclictest22465-21head10:53:090
4622993529,4cyclictest22465-21head10:53:090
4622993529,4cyclictest22465-21head10:53:090
4622993528,5cyclictest30531-21sort08:22:550
4622993528,5cyclictest30531-21sort08:22:550
4622993528,5cyclictest30531-21sort08:22:550
4622993521,4cyclictest90-1pr/ttyS012:11:430
4622993521,4cyclictest90-1pr/ttyS012:11:430
4622993426,5cyclictest29305-21cut12:38:090
4622993426,5cyclictest29305-21cut12:38:090
4622993426,5cyclictest29305-21cut12:38:090
4622993425,7cyclictest10503-21fschecks_count11:48:070
4622993425,7cyclictest10503-21fschecks_count11:48:070
167002340,5sleep116706-21mailstats07:43:181
167002340,5sleep116706-21mailstats07:43:181
4623993324,7cyclictest545-21in:imuxsock09:43:061
4623993324,7cyclictest545-21in:imuxsock09:43:061
4622993328,4cyclictest547-21rs:main0
4622993328,4cyclictest547-21rs:main0
4622993326,5cyclictest5601-21sendmail08:42:550
4622993326,5cyclictest5601-21sendmail08:42:550
135132330,3sleep30-21swapper/309:03:083
135132330,3sleep30-21swapper/309:03:083
4623993226,4cyclictest32410-21switchtime11:18:171
4623993226,4cyclictest32410-21switchtime11:18:171
4623993226,4cyclictest23048-21cut09:28:081
4623993226,4cyclictest23048-21cut09:28:081
4623993226,4cyclictest23048-21cut09:28:081
185332320,2chrt0-21swapper/312:08:123
185332320,2chrt0-21swapper/312:08:123
84062310,2sleep20-21swapper/211:43:022
84062310,2sleep20-21swapper/211:43:022
4623993124,5cyclictest15927-21netstat09:08:141
4623993124,5cyclictest15927-21netstat09:08:141
4623993123,6cyclictest7582-21cat11:38:171
4623993123,6cyclictest7582-21cat11:38:171
4623993121,8cyclictest25969-21cat12:28:131
4623993121,8cyclictest25969-21cat12:28:131
4623993120,2cyclictest181rcu_preempt09:37:561
4623993120,2cyclictest181rcu_preempt09:37:561
4622993125,4cyclictest729-21dbus-daemon09:02:550
4622993125,4cyclictest729-21dbus-daemon09:02:550
4622993124,5cyclictest18110-21fschecks_time12:08:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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