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2026-03-19 - 08:23

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 the 100 highest latencies:
System rack9slot4s (updated Thu Mar 19, 2026 00:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150009911291105,19cyclictest30497-21gdbus19:26:261
149999911071065,30cyclictest2645-21snmpd19:26:060
142652567518,32sleep10-21swapper/119:20:281
145872565520,30sleep00-21swapper/019:21:130
1216721440,8sleep11500099cyclictest21:31:191
3272221130,7sleep01499999cyclictest21:20:040
322242940,8sleep11500099cyclictest00:06:191
185632900,9sleep11500099cyclictest20:55:301
232582890,4sleep041ktimersoftd/023:57:150
23452850,7sleep12346-21ssh23:35:271
35482770,3sleep00-21swapper/021:55:370
17932710,8sleep01499999cyclictest00:09:170
188862550,7sleep018883-21grep22:45:240
259932540,24sleep03-21ksoftirqd/000:00:180
298172510,8sleep10-21swapper/122:56:371
58612480,5sleep11500099cyclictest23:05:251
14999994315,7cyclictest5703-21grep21:25:150
15000994221,5cyclictest22-21ksoftirqd/122:07:471
15000994119,5cyclictest22-21ksoftirqd/122:04:341
15000994018,5cyclictest22-21ksoftirqd/121:55:031
150622391,34sleep015073-21ssh00:22:270
15000993924,4cyclictest22-21ksoftirqd/121:55:011
15000993919,5cyclictest22-21ksoftirqd/122:39:441
15000993919,5cyclictest22-21ksoftirqd/121:22:241
15000993819,9cyclictest22-21ksoftirqd/123:40:351
15000993818,9cyclictest22-21ksoftirqd/122:12:261
15000993818,5cyclictest22-21ksoftirqd/121:17:121
15000993816,11cyclictest22-21ksoftirqd/122:40:051
1499999387,28cyclictest0-21swapper/023:50:160
15000993722,5cyclictest22-21ksoftirqd/123:55:501
15000993722,5cyclictest22-21ksoftirqd/123:31:471
15000993722,4cyclictest22-21ksoftirqd/122:26:331
15000993722,4cyclictest22-21ksoftirqd/100:33:141
14999993729,6cyclictest0-21swapper/022:02:160
14999993727,6cyclictest29114-21ssh22:55:350
1499999372,22cyclictest17439-21ntp_states22:10:240
271482361,31sleep127286-21cstates19:55:131
15000993621,5cyclictest22-21ksoftirqd/122:46:591
15000993620,6cyclictest22-21ksoftirqd/100:49:151
15000993620,6cyclictest22-21ksoftirqd/100:25:531
15000993619,6cyclictest22-21ksoftirqd/123:02:571
15000993617,5cyclictest22-21ksoftirqd/121:41:071
1499999363,6cyclictest0-21swapper/020:55:350
1499999363,30cyclictest0-21swapper/019:44:350
1499999363,30cyclictest0-21swapper/000:50:560
14999993627,5cyclictest0-21swapper/022:51:360
1499999361,7cyclictest3302-21runrttasks22:34:440
14999993614,4cyclictest0-21swapper/023:31:020
138332361,31sleep013846-21forks20:45:130
213502351,30sleep121359-21df_inode21:05:151
15000993520,5cyclictest22-21ksoftirqd/123:27:441
15000993520,5cyclictest22-21ksoftirqd/121:39:441
15000993520,5cyclictest22-21ksoftirqd/100:16:241
15000993520,5cyclictest22-21ksoftirqd/100:04:181
15000993519,5cyclictest22-21ksoftirqd/122:24:231
15000993518,6cyclictest22-21ksoftirqd/100:14:471
1500099351,30cyclictest7689-21chrt20:29:361
1500099351,30cyclictest5009-21ssh22:30:351
1499999354,4cyclictest81rcu_preempt21:52:250
1500099346,26cyclictest22-21ksoftirqd/123:53:171
1500099345,4cyclictest81rcu_preempt23:18:511
15000993420,4cyclictest22-21ksoftirqd/121:10:581
15000993419,5cyclictest22-21ksoftirqd/121:29:111
15000993419,5cyclictest22-21ksoftirqd/100:41:481
15000993416,5cyclictest0-21swapper/100:20:191
1499999347,15cyclictest0-21swapper/021:48:000
1499999343,29cyclictest0-21swapper/019:52:560
1499999342,10cyclictest0-21swapper/022:42:400
1499999341,4cyclictest32582-21kworker/0:000:17:360
14999993414,7cyclictest19478-21runrttasks21:39:560
1499999341,21cyclictest18461-21ntpdc19:30:220
119452341,5sleep011954-21diskstats20:40:120
15000993317,5cyclictest22-21ksoftirqd/122:53:281
1500099331,28cyclictest2309-21cron20:05:001
1500099331,27cyclictest2309-21cron21:49:591
1499999339,12cyclictest31841-21fschecks_count00:40:130
1499999337,13cyclictest25675-21runrttasks21:12:090
1499999334,13cyclictest0-21swapper/023:05:030
1499999333,4cyclictest81rcu_preempt23:41:540
1499999332,27cyclictest10129-21fschecks_count23:10:160
1499999331,29cyclictest0-21swapper/020:50:160
303022321,5sleep00-21swapper/020:01:180
1500099329,19cyclictest0-21swapper/122:19:091
1500099324,4cyclictest81rcu_preempt23:11:221
1500099322,4cyclictest81rcu_preempt23:46:031
15000993224,5cyclictest31261-21sendmail-msp00:40:001
15000993222,6cyclictest19483-21df_inode21:00:131
1500099321,29cyclictest0-21swapper/119:54:151
1499999324,13cyclictest2206-21dbus-daemon21:19:520
1499999324,11cyclictest0-21swapper/000:32:520
1499999323,5cyclictest81rcu_preempt22:17:380
1499999323,4cyclictest81rcu_preempt22:36:240
14999993224,4cyclictest3-21ksoftirqd/000:29:220
14999993223,5cyclictest25902-21turbostat.cron22:24:550
1499999321,4cyclictest81rcu_preempt23:16:150
1499999321,4cyclictest81rcu_preempt19:45:170
1499999321,29cyclictest0-21swapper/020:11:550
1499999321,27cyclictest0-21swapper/022:08:150
1500099313,15cyclictest12923-21users20:40:271
15000993113,5cyclictest20633-21cat23:20:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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