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2026-08-22 - 06:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 all highest latencies:
System rack9slot4s (updated Sat Aug 22, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11159912521210,21cyclictest0-21swapper/119:25:091
11159912491218,27cyclictest11496-21cut21:15:161
11149911121074,34cyclictest1540-21df19:25:090
9552625578,32sleep00-21swapper/019:23:560
9552625578,32sleep00-21swapper/019:23:550
7252463419,29sleep10-21swapper/119:21:301
7252463419,29sleep10-21swapper/119:21:301
111499207156,38cyclictest0-21swapper/021:15:160
133442940,5sleep113343-21aten_r4power_en19:55:101
60142860,4sleep041ktimersoftd/019:35:110
1115995115,5cyclictest22-21ksoftirqd/123:40:201
1115994913,6cyclictest22-21ksoftirqd/121:35:121
1115994812,6cyclictest22-21ksoftirqd/121:45:001
111599478,6cyclictest22-21ksoftirqd/122:15:181
1115994713,5cyclictest22-21ksoftirqd/100:10:171
1115994712,5cyclictest22-21ksoftirqd/100:20:271
1115994618,5cyclictest22-21ksoftirqd/120:40:441
1115994411,6cyclictest22-21ksoftirqd/100:42:451
111599437,6cyclictest22-21ksoftirqd/121:00:211
111599437,6cyclictest22-21ksoftirqd/119:30:021
111599437,6cyclictest22-21ksoftirqd/100:05:221
1115994319,11cyclictest22-21ksoftirqd/121:25:251
1115994312,10cyclictest22-21ksoftirqd/120:10:171
111599418,6cyclictest22-21ksoftirqd/123:06:081
111599418,6cyclictest22-21ksoftirqd/119:45:111
111599415,5cyclictest22-21ksoftirqd/122:20:231
1115994119,4cyclictest22-21ksoftirqd/122:51:221
1115994112,10cyclictest22-21ksoftirqd/121:45:121
1115994110,4cyclictest81rcu_preempt20:15:111
1115994110,10cyclictest22-21ksoftirqd/120:50:181
111599405,4cyclictest81rcu_preempt00:25:101
111599404,6cyclictest22-21ksoftirqd/122:55:121
111599404,6cyclictest22-21ksoftirqd/121:20:221
1115994025,4cyclictest22-21ksoftirqd/100:15:171
1115994020,4cyclictest22-21ksoftirqd/123:35:111
111599395,4cyclictest81rcu_preempt19:35:261
1115993920,4cyclictest22-21ksoftirqd/121:30:341
111599389,4cyclictest81rcu_preempt23:15:291
111599389,4cyclictest81rcu_preempt23:01:571
111599388,4cyclictest81rcu_preempt00:01:441
111599385,4cyclictest81rcu_preempt23:25:251
111599385,4cyclictest81rcu_preempt23:10:181
111599385,4cyclictest81rcu_preempt20:55:151
111599385,4cyclictest81rcu_preempt20:30:111
111599384,4cyclictest81rcu_preempt23:50:261
1115993824,4cyclictest22-21ksoftirqd/123:20:231
1115993824,4cyclictest22-21ksoftirqd/122:25:181
1115993824,4cyclictest22-21ksoftirqd/122:05:191
1115993822,4cyclictest22-21ksoftirqd/122:35:151
1115993821,4cyclictest22-21ksoftirqd/122:10:181
1115993820,4cyclictest22-21ksoftirqd/122:40:111
1115993813,9cyclictest22-21ksoftirqd/122:49:441
1115993813,6cyclictest22-21ksoftirqd/120:25:211
111599378,4cyclictest81rcu_preempt22:30:171
111599374,6cyclictest22-21ksoftirqd/100:45:231
111599374,4cyclictest81rcu_preempt20:45:171
111599373,4cyclictest81rcu_preempt21:10:111
1115993719,4cyclictest22-21ksoftirqd/100:30:221
1115993717,4cyclictest22-21ksoftirqd/123:30:171
111599371,6cyclictest22-21ksoftirqd/119:40:111
1115993710,4cyclictest81rcu_preempt20:05:161
111599363,5cyclictest81rcu_preempt21:55:111
1115993622,4cyclictest22-21ksoftirqd/121:50:181
1115993620,4cyclictest22-21ksoftirqd/120:35:151
1115993619,4cyclictest22-21ksoftirqd/120:20:281
1115993617,4cyclictest22-21ksoftirqd/122:00:131
111499369,14cyclictest1462-21df22:15:140
1115993521,4cyclictest22-21ksoftirqd/121:05:171
1115993520,4cyclictest22-21ksoftirqd/123:55:181
1115993519,4cyclictest22-21ksoftirqd/123:45:241
1115993517,5cyclictest22-21ksoftirqd/120:00:281
111599351,5cyclictest11698-21df19:50:141
111599343,4cyclictest81rcu_preempt00:50:151
111499341,12cyclictest16779-21aten_r4power_po21:30:150
1114993410,10cyclictest9028-21idleruntime-cro21:10:000
1115993314,4cyclictest22-21ksoftirqd/100:35:231
111499333,15cyclictest6083-21python22:25:270
111499333,15cyclictest24158-21diskstats23:15:160
1114993314,6cyclictest5529-21ntp_states23:50:230
1114993314,15cyclictest3-21ksoftirqd/023:06:390
1114993313,6cyclictest8492-21ntp_states19:40:240
289582321,17sleep00-21swapper/023:26:020
152702320,10sleep0111499cyclictest22:50:230
111499329,12cyclictest4488-21taskset23:49:300
111499328,11cyclictest0-21swapper/019:30:120
111499327,12cyclictest18220-21timerwakeupswit20:05:290
111499323,4cyclictest81rcu_preempt22:55:150
111499321,8cyclictest0-21swapper/000:05:160
1114993213,6cyclictest18518-21df23:00:130
1114993212,6cyclictest3286-21runrttasks21:49:040
111499321,19cyclictest2225-21dbus-daemon00:36:050
111499314,4cyclictest81rcu_preempt22:30:090
111499312,15cyclictest28175-21/usr/sbin/munin00:50:250
1114993112,6cyclictest11348-21/usr/sbin/munin22:40:180
111499311,19cyclictest11565-21gdbus23:41:150
1114993111,6cyclictest19597-21python21:35:260
89622301,5sleep00-21swapper/000:00:170
242422301,5sleep00-21swapper/020:23:080
111499305,12cyclictest29382-21switchtime20:35:240
111499302,15cyclictest3286-21runrttasks00:18:420
1114993021,5cyclictest20785-21cat00:30:270
111499302,14cyclictest13783-21ntp_states21:20:240
111499302,14cyclictest12694-21perl00:10:170
111499302,14cyclictest12396-21/usr/sbin/munin19:50:260
111499301,4cyclictest81rcu_preempt23:21:020
111499301,4cyclictest81rcu_preempt21:50:280
1114993012,5cyclictest25413-21ntp_states20:25:220
111499301,25cyclictest23611-21basename00:40:120
1114993012,5cyclictest22543-21munin-run20:20:000
1114993012,5cyclictest11565-21gdbus20:44:540
1114993012,15cyclictest13341-21grep19:55:100
111499301,17cyclictest9918-21grep21:10:220
1114993011,7cyclictest32562-21/usr/sbin/munin22:10:230
1114993011,7cyclictest0-21swapper/000:47:000
1114993011,6cyclictest29574-21runrttasks22:03:350
111499301,16cyclictest15182-21/usr/sbin/munin21:25:140
79602291,4sleep00-21swapper/023:56:380
314062291,5sleep00-21swapper/022:08:060
274022291,5sleep00-21swapper/021:55:430
111499292,14cyclictest6109-21memory21:00:190
111499292,14cyclictest2225-21dbus-daemon19:46:200
111499292,14cyclictest21685-21/usr/sbin/munin21:40:280
111499292,13cyclictest16334-21sort20:00:290
111499291,4cyclictest9394-21/usr/sbin/munin22:35:180
111499291,4cyclictest81rcu_preempt00:25:290
111499291,15cyclictest3493-21diskstats22:20:150
1114992910,7cyclictest18937-21/usr/sbin/munin20:10:090
49992281,5sleep00-21swapper/020:57:300
29762281,5sleep00-21swapper/020:51:020
111499282,14cyclictest32655-21/usr/sbin/munin20:45:170
1114992811,6cyclictest30102-21iostat23:30:190
1114992811,5cyclictest22873-21runrttasks23:10:250
111499281,14cyclictest13258-21sort22:45:210
111499279,6cyclictest31990-21/usr/sbin/munin23:35:200
111499271,13cyclictest26688-21cstates20:30:140
1114992610,4cyclictest2225-21dbus-daemon00:23:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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