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2026-06-13 - 10:41

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 Sat Jun 13, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2009221420,3chrt0-21swapper/020:53:100
2009221420,3chrt0-21swapper/020:53:100
2009221420,3chrt0-21swapper/020:53:100
2561321190,2chrt25485-40mandb00:03:010
2561321190,2chrt25485-40mandb00:03:010
2561321190,2chrt25485-40mandb00:03:010
2561321190,2chrt25485-40mandb00:03:010
269972980,3sleep30-21swapper/300:03:493
269972980,3sleep30-21swapper/300:03:493
269512840,1chrt25485-40mandb00:03:221
269512840,1chrt25485-40mandb00:03:221
300652820,3chrt0-21swapper/300:13:093
300652820,3chrt0-21swapper/300:13:093
300652820,3chrt0-21swapper/300:13:093
246732730,3sleep30-21swapper/322:33:033
246732730,3sleep30-21swapper/322:33:033
204342720,3sleep30-21swapper/323:48:053
204342720,3sleep30-21swapper/323:48:053
148222640,3chrt0-21swapper/223:33:042
225492610,3sleep30-21swapper/323:53:073
225492610,3sleep30-21swapper/323:53:073
284292570,3chrt0-21swapper/322:43:043
284292570,3chrt0-21swapper/322:43:043
284292570,3chrt0-21swapper/322:43:043
180792570,2sleep20-21swapper/223:42:572
180792570,2sleep20-21swapper/223:42:572
26702560,2sleep12668-21latency_hist00:28:031
26702560,2sleep12668-21latency_hist00:28:031
131362540,3chrt0-21swapper/323:28:073
131362540,3chrt0-21swapper/323:28:073
277822530,2sleep1181rcu_preempt00:08:091
277822530,2sleep1181rcu_preempt00:08:091
277822530,2sleep1181rcu_preempt00:08:091
14705995223,10cyclictest20854-21taskset20:56:521
14705995223,10cyclictest20854-21taskset20:56:521
14705995223,10cyclictest20854-21taskset20:56:521
275172510,2sleep20-21swapper/221:13:102
275172510,2sleep20-21swapper/221:13:102
14705995124,10cyclictest0-21swapper/100:13:581
14705995124,10cyclictest0-21swapper/100:13:581
14705995124,10cyclictest0-21swapper/100:13:581
319282490,4sleep131923-21gzip00:18:101
14705994939,4cyclictest0-21swapper/100:02:581
14705994939,4cyclictest0-21swapper/100:02:581
14705994939,4cyclictest0-21swapper/100:02:581
14705994939,4cyclictest0-21swapper/100:02:581
14705994923,8cyclictest3461-21cron21:37:521
14705994923,8cyclictest3461-21cron21:37:521
14705994923,8cyclictest3461-21cron21:37:521
14705994923,10cyclictest23060-21taskset19:33:431
14705994923,10cyclictest23060-21taskset19:33:431
14705994923,10cyclictest23060-21taskset19:33:431
14705994922,9cyclictest19036-21taskset20:52:261
14705994922,9cyclictest19036-21taskset20:52:261
14705994922,10cyclictest7655-21taskset20:21:111
14705994922,10cyclictest7655-21taskset20:21:111
14705994920,11cyclictest5768-21seq20:15:561
14705994920,11cyclictest5768-21seq20:15:561
14705994920,11cyclictest5768-21seq20:15:561
14705994823,9cyclictest26893-21seq19:44:521
14705994823,9cyclictest26893-21seq19:44:521
14705994822,15cyclictest10749-21seq21:54:131
14705994822,15cyclictest10749-21seq21:54:131
14705994822,15cyclictest10749-21seq21:54:131
14705994820,13cyclictest17743-21chrt23:40:111
14705994820,13cyclictest17743-21chrt23:40:111
14705994819,13cyclictest29404-21taskset22:43:211
14705994819,13cyclictest29404-21taskset22:43:211
14705994819,13cyclictest29404-21taskset22:43:211
61952470,4chrt6198-21unixbench-2d23:08:151
61952470,4chrt6198-21unixbench-2d23:08:151
14705994721,10cyclictest25739-21taskset22:34:211
14705994721,10cyclictest25739-21taskset22:34:211
14705994721,10cyclictest22918-21wc21:02:561
14705994721,10cyclictest22918-21wc21:02:561
14705994719,11cyclictest24071-21taskset22:31:541
14705994719,11cyclictest24071-21taskset22:31:541
14705994718,12cyclictest14135-21taskset23:31:461
14705994718,12cyclictest14135-21taskset23:31:461
130262470,3chrt0-21swapper/223:28:062
130262470,3chrt0-21swapper/223:28:062
244652460,3sleep30-21swapper/323:58:103
244652460,3sleep30-21swapper/323:58:103
244652460,3sleep30-21swapper/323:58:103
244652460,3sleep30-21swapper/323:58:103
14705994622,7cyclictest19732-21seq23:46:331
14705994622,7cyclictest19732-21seq23:46:331
14705994620,11cyclictest28817-21taskset19:50:411
14705994620,11cyclictest28817-21taskset19:50:411
14705994620,11cyclictest19507-21taskset19:25:551
14705994619,12cyclictest11377-21chrt20:30:281
14705994619,12cyclictest11377-21chrt20:30:281
14705994618,13cyclictest30651-21taskset19:55:181
14705994618,13cyclictest30651-21taskset19:55:181
14705994618,11cyclictest22465-21latency_hist22:28:021
14705994618,11cyclictest22465-21latency_hist22:28:021
14705994521,9cyclictest31368-21taskset22:49:411
14705994521,9cyclictest31368-21taskset22:49:411
14705994521,9cyclictest31368-21taskset22:49:411
14705994521,8cyclictest14929-21taskset22:07:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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