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2026-08-25 - 18:12

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 Aug 25, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
848221150,2sleep30-21swapper/307:34:113
207121070,4chrt0-21swapper/310:09:173
2050021020,2chrt20502-21sed08:04:190
198002900,3sleep30-21swapper/308:04:103
90912810,3sleep20-21swapper/207:34:182
87422810,3sleep30-21swapper/308:59:223
87422810,3sleep30-21swapper/308:59:223
246172810,1sleep3431rcuc/309:44:123
246172810,1sleep3431rcuc/309:44:123
64102770,3sleep00-21swapper/007:29:100
208062740,3sleep30-21swapper/309:34:113
208062740,3sleep30-21swapper/309:34:113
148712730,5chrt14875-21mailstats12:09:210
148712730,5chrt14875-21mailstats12:09:210
274162690,3chrt0-21swapper/308:24:123
118532690,3sleep30-21swapper/309:09:153
118532690,3sleep30-21swapper/309:09:153
170932680,2chrt17092-21head10:49:151
170932680,2chrt17092-21head10:49:151
184932670,3sleep20-21swapper/210:54:142
184932670,3sleep20-21swapper/210:54:142
176612670,3sleep30-21swapper/312:19:053
167782660,2sleep20-21swapper/210:49:122
167782660,2sleep20-21swapper/210:49:122
100872640,3sleep20-21swapper/209:04:152
100872640,3sleep20-21swapper/209:04:152
250612600,3sleep20-21swapper/209:44:152
250612600,3sleep20-21swapper/209:44:152
116462600,2chrt0-21swapper/310:34:173
116462600,2chrt0-21swapper/310:34:173
63112580,3sleep20-21swapper/208:54:142
63112580,3sleep20-21swapper/208:54:142
276202580,2chrt0-21swapper/208:24:152
4002570,3chrt0-21swapper/308:39:123
4002570,3chrt0-21swapper/308:39:123
310882540,2sleep031281-21unixbench_singl09:59:220
310882540,2sleep031281-21unixbench_singl09:59:220
98642530,2chrt9863-21tail09:04:130
98642530,2chrt9863-21tail09:04:130
14192520,3chrt0-21swapper/211:34:142
72992470,3sleep30-21swapper/311:49:183
72992470,3sleep30-21swapper/311:49:183
31912470,2sleep20-21swapper/208:44:212
219692460,3sleep30-21swapper/308:09:183
219692460,3sleep30-21swapper/308:09:183
219162440,3sleep20-21swapper/212:29:132
136222410,2sleep2351rcuc/209:14:122
324412390,3chrt0-21swapper/308:39:043
255772390,3chrt0-21swapper/311:14:013
255772390,3chrt0-21swapper/311:14:013
299022380,2sleep20-21swapper/208:29:222
1053993831,5cyclictest545-21in:imuxsock09:03:581
1053993831,5cyclictest545-21in:imuxsock09:03:581
223742360,2sleep022406-21latency_hist09:39:000
223742360,2sleep022406-21latency_hist09:39:000
1053993527,6cyclictest16501-21processes07:54:181
312542340,2sleep10-21swapper/111:29:021
1053993425,7cyclictest32631-21needreboot10:04:171
98632330,2sleep04218-21kworker/u9:0-nfsiod07:38:590
320812330,2chrt0-21swapper/311:29:163
1053993327,4cyclictest1346-21avahi-daemon10:03:581
1053993327,4cyclictest1346-21avahi-daemon10:03:581
1053993327,4cyclictest1039-21cyclictest08:19:201
1053993324,7cyclictest6165-21threads10:19:211
1053993324,7cyclictest6165-21threads10:19:211
1053993324,7cyclictest17516-21kernelversion09:24:141
1053993324,7cyclictest17516-21kernelversion09:24:141
1052993327,4cyclictest11038-21fschecks_time10:34:100
1052993327,4cyclictest11038-21fschecks_time10:34:100
1052993324,7cyclictest25010-21latency_hist08:19:050
1053993226,5cyclictest18532-21fschecks_time10:54:141
1053993226,5cyclictest18532-21fschecks_time10:54:141
1052993224,6cyclictest3111-21latency_hist10:14:020
1052993223,7cyclictest3610-21cron08:48:580
326652310,4sleep20-21swapper/210:04:182
1052993126,3cyclictest9252-21cron09:03:580
1052993126,3cyclictest9252-21cron09:03:580
1052993124,5cyclictest26249-21kernelversion11:14:140
1052993124,5cyclictest26249-21kernelversion11:14:140
1052993124,5cyclictest2464-21latency_hist11:38:580
1053993022,6cyclictest20332-21fschecks_count10:59:121
1053993022,6cyclictest20332-21fschecks_count10:59:121
1053993022,6cyclictest19084-21fschecks_time09:29:121
1053993022,6cyclictest19084-21fschecks_time09:29:121
1053993022,6cyclictest17839-21fschecks_count12:19:111
1053993022,6cyclictest17839-21fschecks_count12:19:111
1053993021,7cyclictest15062-21kernelversion10:44:151
1053993021,7cyclictest15062-21kernelversion10:44:151
1052993022,6cyclictest12793-21netstat12:04:170
1052993022,6cyclictest12793-21netstat12:04:170
197042290,4sleep30-21swapper/312:24:123
197042290,4sleep30-21swapper/312:24:123
1053992924,3cyclictest982-21kworker/u9:3-rpciod08:03:591
1053992924,3cyclictest982-21kworker/u9:3-rpciod08:03:591
1053992920,7cyclictest12371-21threads09:09:211
1053992920,7cyclictest12371-21threads09:09:211
1052992920,7cyclictest14419-21latency_hist10:44:010
1052992920,7cyclictest14419-21latency_hist10:44:010
1053992822,5cyclictest23864-21netstat08:14:161
1053992821,5cyclictest1039-21cyclictest12:39:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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