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2026-08-31 - 17:17

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 Mon Aug 31, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
235592910,3sleep30-21swapper/310:14:163
235592910,3sleep30-21swapper/310:14:163
94332840,3sleep30-21swapper/312:29:193
94332840,3sleep30-21swapper/312:29:193
177492800,3chrt0-21swapper/208:29:272
200182750,2sleep20-21swapper/208:39:042
88942710,4sleep08419-21/usr/sbin/munin09:34:170
28942620,3sleep20-21swapper/210:44:222
114062590,2chrt0-21swapper/011:09:040
114062590,2chrt0-21swapper/011:09:040
306072560,3sleep30-21swapper/307:39:193
306072560,3sleep30-21swapper/307:39:193
183622520,3sleep30-21swapper/308:34:103
83182510,2sleep30-21swapper/308:04:273
137222500,3chrt0-21swapper/009:47:190
316892460,1sleep00-21swapper/009:09:160
316892460,1sleep00-21swapper/009:09:160
113522460,3sleep30-21swapper/312:34:173
113522460,3sleep30-21swapper/312:34:173
58422410,3sleep30-21swapper/307:59:213
58422410,3sleep30-21swapper/307:59:213
229862390,1chrt22984-21sshd10:11:190
229862390,1chrt22984-21sshd10:11:190
48252380,3sleep10-21swapper/110:49:241
48252380,3sleep10-21swapper/110:49:241
146622380,2sleep0181rcu_preempt09:49:200
107942380,1sleep110802-21idleruntime-cro12:34:041
107942380,1sleep110802-21idleruntime-cro12:34:041
142382370,3sleep20-21swapper/211:14:212
142382370,3sleep20-21swapper/211:14:212
226062360,2sleep20-21swapper/210:09:242
226062360,2sleep20-21swapper/210:09:242
207072360,2sleep120867-21grep10:04:261
284762350,2sleep028521-21proc_pri08:59:240
284762350,2sleep028521-21proc_pri08:59:240
21281993529,4cyclictest26527-21needreboot08:54:211
20692350,2sleep0171ktimers/009:14:270
20692350,2sleep0171ktimers/009:14:270
21280993420,12cyclictest0-21swapper/008:19:170
21280993420,12cyclictest0-21swapper/008:19:170
21281993326,5cyclictest14442-21sendmail08:24:041
21281993326,5cyclictest14442-21sendmail08:24:041
21280993326,5cyclictest11537-21needreboot08:14:220
21280993325,6cyclictest550-21cron10:29:040
21280993325,6cyclictest550-21cron10:29:040
21280993325,6cyclictest3578-21fschecks_time07:54:180
21281993227,3cyclictest8114-21fschecks_time10:59:181
21281993227,3cyclictest8114-21fschecks_time10:59:181
21281993225,5cyclictest10451-21netstat11:04:221
21281993225,5cyclictest10451-21netstat11:04:221
21281993224,6cyclictest572-21cups-browsed10:04:041
21281993224,6cyclictest572-21cups-browsed10:04:041
21280993226,4cyclictest21271-21cyclictest07:33:140
21280993224,6cyclictest9612-21missed_timers08:09:200
21280993224,6cyclictest9612-21missed_timers08:09:200
42342310,3sleep30-21swapper/310:49:173
42342310,3sleep30-21swapper/310:49:173
21281993126,3cyclictest5010-21gltestperf09:24:151
21281993126,3cyclictest5010-21gltestperf09:24:151
21281993124,5cyclictest470-21fschecks_count10:39:171
21281993124,5cyclictest470-21fschecks_count10:39:171
21281993123,5cyclictest20161-21latency_hist08:39:091
21280993126,4cyclictest24724-21/usr/sbin/munin11:44:240
21280993126,4cyclictest24724-21/usr/sbin/munin11:44:240
21280993126,3cyclictest0-21swapper/012:14:040
21280993125,4cyclictest7029-21latency_hist12:24:050
21280993125,4cyclictest7029-21latency_hist12:24:050
21280993124,5cyclictest25128-21latency_hist10:19:060
21280993124,5cyclictest25128-21latency_hist10:19:060
21280993123,5cyclictest4790-21netstat10:49:220
21280993123,5cyclictest4790-21netstat10:49:220
21281993024,5cyclictest32689-21kernelversion12:04:201
21281993023,5cyclictest7057-21sendmail12:24:051
21281993023,5cyclictest7057-21sendmail12:24:051
21281993022,6cyclictest32010-21latency_hist07:44:111
21281993022,6cyclictest32010-21latency_hist07:44:111
21280993023,5cyclictest21271-21cyclictest11:18:130
21280993023,5cyclictest21271-21cyclictest11:18:130
241452290,3sleep30-21swapper/308:49:173
241452290,3sleep30-21swapper/308:49:173
21281992924,4cyclictest24740-21ntp_offset08:49:241
21281992924,4cyclictest24740-21ntp_offset08:49:241
21281992921,6cyclictest22474-21runrttasks10:09:231
21281992921,6cyclictest22474-21runrttasks10:09:231
21281992920,7cyclictest890-21latency_hist09:14:111
21281992920,7cyclictest30985-21needreboot11:59:221
21281992920,7cyclictest30985-21needreboot11:59:221
21281992920,7cyclictest30985-21needreboot11:59:221
21281992919,7cyclictest25215-21kernelversion11:44:201
21281992919,7cyclictest25215-21kernelversion11:44:201
21280992924,2cyclictest0-21swapper/010:04:040
21280992924,2cyclictest0-21swapper/010:04:040
21280992922,5cyclictest16435-21kernelversion09:54:180
21280992922,5cyclictest16435-21kernelversion09:54:180
21280992920,6cyclictest16463-21latency_hist08:29:090
21280992917,10cyclictest0-21swapper/008:04:170
284192280,2chrt0-21swapper/307:34:163
21281992824,3cyclictest21271-21cyclictest08:04:221
21281992821,6cyclictest4576-21latency_hist09:24:101
21281992821,6cyclictest4576-21latency_hist09:24:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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