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2026-06-20 - 08:59

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 20, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44392760,2sleep04441-21iwlist23:03:120
44392760,2sleep04441-21iwlist23:03:120
44392760,2sleep04441-21iwlist23:03:120
232552660,3chrt0-21swapper/319:33:143
232552660,3chrt0-21swapper/319:33:143
232552660,3chrt0-21swapper/319:33:143
9752610,2sleep0994-21ntp_states22:53:160
9752610,2sleep0994-21ntp_states22:53:160
9752610,2sleep0994-21ntp_states22:53:160
261132610,2chrt25150-21/usr/sbin/munin22:33:170
261132610,2chrt25150-21/usr/sbin/munin22:33:170
261132610,2chrt25150-21/usr/sbin/munin22:33:170
219152600,1sleep021975-21irqstats22:23:130
219152600,1sleep021975-21irqstats22:23:130
219152600,1sleep021975-21irqstats22:23:130
196432600,3sleep30-21swapper/319:23:183
196432600,3sleep30-21swapper/319:23:183
301692590,2sleep30-21swapper/321:18:153
301692590,2sleep30-21swapper/321:18:153
301692590,2sleep30-21swapper/321:18:153
274562550,3sleep30-21swapper/300:03:213
274562550,3sleep30-21swapper/300:03:213
274562550,3sleep30-21swapper/300:03:213
15592995245,4cyclictest0-21swapper/000:03:170
15592995245,4cyclictest0-21swapper/000:03:170
15592995245,4cyclictest0-21swapper/000:03:170
272742500,3chrt0-21swapper/222:38:102
272742500,3chrt0-21swapper/222:38:102
272742500,3chrt0-21swapper/222:38:102
15594994826,20cyclictest31069-21threads19:53:191
15594994826,20cyclictest31069-21threads19:53:191
15594994826,20cyclictest31069-21threads19:53:191
178202470,3sleep20-21swapper/223:38:162
223032460,3chrt0-21swapper/323:50:023
223032460,3chrt0-21swapper/323:50:023
3382440,3sleep30-21swapper/300:18:173
3382440,3sleep30-21swapper/300:18:173
3382440,3sleep30-21swapper/300:18:173
15592994233,5cyclictest0-21swapper/000:03:050
15592994233,5cyclictest0-21swapper/000:03:050
172252410,4sleep00-21swapper/023:38:090
172252410,4sleep00-21swapper/023:38:090
172252410,4sleep00-21swapper/023:38:090
15594994116,23cyclictest6438-21/usr/sbin/munin21:43:101
188902400,1sleep2351rcuc/220:48:152
188902400,1sleep2351rcuc/220:48:152
16922400,2sleep00-21swapper/021:28:170
136022400,3sleep30-21swapper/323:28:123
136022400,3sleep30-21swapper/323:28:123
136022400,3sleep30-21swapper/323:28:123
1559499381,13cyclictest30982-21ntp_states00:13:181
1559499381,13cyclictest30982-21ntp_states00:13:181
1559499381,13cyclictest30982-21ntp_states00:13:181
1559499381,10cyclictest3556-21rt-features21:33:171
1559499381,10cyclictest3556-21rt-features21:33:171
1559499381,10cyclictest18906-21wc20:48:151
1559499381,10cyclictest18906-21wc20:48:151
64022370,3sleep20-21swapper/221:43:062
64022370,3sleep20-21swapper/221:43:062
1559499379,5cyclictest0-21swapper/121:38:101
1559499371,9cyclictest12010-21latency_hist21:58:071
1559499371,9cyclictest12010-21latency_hist21:58:071
1559499371,12cyclictest24223-21cron19:37:581
1559499371,12cyclictest24223-21cron19:37:581
1559499371,12cyclictest24223-21cron19:37:581
169292360,3sleep00-21swapper/022:08:210
169292360,3sleep00-21swapper/022:08:210
1559499362,10cyclictest22717-21find23:53:081
1559499362,10cyclictest22717-21find23:53:081
15594993616,17cyclictest26894-21latency_hist00:03:121
15594993616,17cyclictest26894-21latency_hist00:03:121
15594993611,3cyclictest0-21swapper/120:33:231
15594993611,3cyclictest0-21swapper/120:33:231
15594993611,3cyclictest0-21swapper/120:33:231
1559499361,12cyclictest8239-21unixbench_singl20:18:221
1559499361,12cyclictest8239-21unixbench_singl20:18:221
15594993611,23cyclictest0-21swapper/122:13:211
15594993611,23cyclictest0-21swapper/122:13:211
1559499361,11cyclictest32012-21missed_timers21:23:131
1559499361,11cyclictest32012-21missed_timers21:23:131
1559499361,11cyclictest29183-21fschecks_time22:43:101
1559499361,11cyclictest29183-21fschecks_time22:43:101
1559499361,11cyclictest16793-21ls20:43:121
1559499361,11cyclictest16793-21ls20:43:121
1559499361,11cyclictest10560-21mailstats23:18:171
1559499361,11cyclictest10560-21mailstats23:18:171
1559499361,11cyclictest10560-21mailstats23:18:171
1559499361,10cyclictest1207-21latency_hist20:03:001
1559499359,5cyclictest26314-40mandb00:03:231
1559499359,5cyclictest26314-40mandb00:03:231
1559499359,5cyclictest26314-40mandb00:03:231
1559499357,8cyclictest26338-21memory21:08:141
1559499357,8cyclictest26338-21memory21:08:141
1559499357,8cyclictest26338-21memory21:08:141
15594993529,4cyclictest3752-21cut00:28:121
15594993529,4cyclictest3752-21cut00:28:121
15594993529,4cyclictest3752-21cut00:28:121
1559499352,12cyclictest749-21runrttasks19:26:521
1559499352,12cyclictest749-21runrttasks19:26:521
1559499352,11cyclictest7072-21latency_hist00:38:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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