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2026-08-13 - 05:36

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 376 highest latencies:
System rack9slot4s (updated Thu Aug 13, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91229912041195,6cyclictest0-21swapper/119:29:281
80462624577,31sleep00-21swapper/019:20:210
89782554510,30sleep10-21swapper/119:24:051
912199173149,21cyclictest0-21swapper/019:29:280
124502870,8sleep0912199cyclictest23:50:000
9122995113,6cyclictest22-21ksoftirqd/100:10:211
9122995015,6cyclictest22-21ksoftirqd/120:40:111
9122994925,4cyclictest22-21ksoftirqd/121:45:011
9122994918,4cyclictest22-21ksoftirqd/123:05:121
9122994914,5cyclictest22-21ksoftirqd/121:05:211
9122994914,5cyclictest22-21ksoftirqd/119:45:141
9122994912,6cyclictest22-21ksoftirqd/123:30:251
9122994813,6cyclictest22-21ksoftirqd/119:55:221
9122994813,6cyclictest22-21ksoftirqd/119:30:121
9122994813,5cyclictest22-21ksoftirqd/121:55:131
9122994812,6cyclictest22-21ksoftirqd/100:00:221
9122994711,5cyclictest22-21ksoftirqd/120:30:161
912299469,6cyclictest22-21ksoftirqd/120:00:221
9122994620,4cyclictest22-21ksoftirqd/122:20:281
9122994613,6cyclictest22-21ksoftirqd/100:40:431
9122994612,6cyclictest22-21ksoftirqd/122:35:101
272572460,8sleep1912299cyclictest21:35:231
9122994514,6cyclictest22-21ksoftirqd/121:25:131
9122994512,6cyclictest22-21ksoftirqd/121:45:161
9122994510,6cyclictest22-21ksoftirqd/100:30:181
912299449,6cyclictest22-21ksoftirqd/122:25:271
912299449,5cyclictest22-21ksoftirqd/122:01:561
9122994415,11cyclictest22-21ksoftirqd/120:45:151
9122994415,11cyclictest22-21ksoftirqd/120:45:151
9122994410,5cyclictest22-21ksoftirqd/123:00:161
912299438,5cyclictest22-21ksoftirqd/119:50:481
912299437,6cyclictest22-21ksoftirqd/119:40:111
9122994321,4cyclictest22-21ksoftirqd/120:15:271
9122994320,4cyclictest22-21ksoftirqd/123:55:121
9122994314,10cyclictest22-21ksoftirqd/119:35:101
912299428,6cyclictest22-21ksoftirqd/100:39:521
912299427,6cyclictest22-21ksoftirqd/120:35:111
9122994224,4cyclictest22-21ksoftirqd/100:05:161
9122994221,4cyclictest22-21ksoftirqd/121:30:191
9122994221,4cyclictest22-21ksoftirqd/121:30:191
9122994212,5cyclictest22-21ksoftirqd/123:50:111
9122994211,4cyclictest22-21ksoftirqd/123:25:001
912299417,6cyclictest22-21ksoftirqd/123:25:201
912299417,4cyclictest81rcu_preempt00:23:201
912299416,6cyclictest22-21ksoftirqd/120:55:281
912299414,5cyclictest22-21ksoftirqd/100:45:181
9122994123,4cyclictest22-21ksoftirqd/121:50:281
9122994111,4cyclictest81rcu_preempt23:35:101
221982410,7sleep0912199cyclictest19:55:260
912299407,6cyclictest22-21ksoftirqd/122:17:521
912299406,6cyclictest22-21ksoftirqd/122:40:581
912299406,5cyclictest22-21ksoftirqd/122:55:121
912299404,6cyclictest22-21ksoftirqd/120:05:151
9122994022,4cyclictest22-21ksoftirqd/123:15:541
9122994022,4cyclictest22-21ksoftirqd/123:10:111
9122994022,4cyclictest22-21ksoftirqd/122:10:121
9122994022,4cyclictest22-21ksoftirqd/122:10:111
9122994022,4cyclictest22-21ksoftirqd/120:25:211
9122994017,4cyclictest22-21ksoftirqd/122:50:211
912299398,6cyclictest22-21ksoftirqd/123:45:221
912299396,6cyclictest22-21ksoftirqd/122:46:561
9122993925,4cyclictest22-21ksoftirqd/122:30:221
9122993923,4cyclictest22-21ksoftirqd/122:05:301
9122993923,4cyclictest22-21ksoftirqd/120:10:141
9122993921,4cyclictest22-21ksoftirqd/121:15:181
9122993921,4cyclictest22-21ksoftirqd/121:10:291
9122993918,4cyclictest22-21ksoftirqd/100:25:211
912299386,4cyclictest81rcu_preempt23:40:191
9122993819,4cyclictest22-21ksoftirqd/120:20:111
227972381,32sleep122815-21ntp_states00:15:251
9122993722,4cyclictest22-21ksoftirqd/121:00:101
9122993717,4cyclictest22-21ksoftirqd/120:50:191
9122993621,4cyclictest22-21ksoftirqd/100:50:081
912199362,21cyclictest0-21swapper/000:21:320
912199361,4cyclictest81rcu_preempt20:07:240
912199361,10cyclictest22730-21aten_r4power_cu21:25:120
912199351,12cyclictest0-21swapper/023:02:300
912299341,6cyclictest20844-21/usr/sbin/munin21:20:171
912199342,19cyclictest3021-21sh23:25:010
912199341,5cyclictest28759-21fschecks_time21:40:150
912199331,8cyclictest0-21swapper/023:06:330
912199331,7cyclictest13358-21runrttasks23:50:210
912199331,4cyclictest81rcu_preempt00:52:160
912199331,19cyclictest25946-21cron23:00:000
912199329,11cyclictest10560-21python20:50:260
912199321,4cyclictest81rcu_preempt20:43:240
9121993214,5cyclictest31256-21python21:45:270
912199316,4cyclictest81rcu_preempt21:50:200
912199314,5cyclictest81rcu_preempt22:31:580
912199311,4cyclictest81rcu_preempt00:10:220
912199308,4cyclictest81rcu_preempt20:55:270
912199304,11cyclictest81rcu_preempt23:55:300
9121993023,5cyclictest0-21swapper/022:25:090
9121993012,15cyclictest0-21swapper/000:15:270
9121993011,4cyclictest40250irq/92-i91521:00:270
912199301,14cyclictest25402-21/usr/sbin/munin21:30:250
912199301,14cyclictest25402-21/usr/sbin/munin21:30:240
912199296,4cyclictest81rcu_preempt20:15:170
912199294,19cyclictest15850-21diskstats19:40:150
912199292,14cyclictest0-21swapper/020:04:020
912199292,13cyclictest7171-21sort22:10:000
912199291,4cyclictest81rcu_preempt23:34:010
912199291,4cyclictest81rcu_preempt23:10:290
912199291,4cyclictest81rcu_preempt22:00:170
912199291,15cyclictest30786-21/usr/sbin/munin00:35:300
912199291,15cyclictest1008-21/usr/sbin/munin00:45:110
912199291,14cyclictest2531-21grep20:30:220
9121992910,6cyclictest28015-21grep20:10:280
912199290,4cyclictest81rcu_preempt20:37:570
208772291,5sleep00-21swapper/019:53:370
191372291,5sleep019219-21grep19:50:010
14102291,5sleep00-21swapper/020:26:400
126092291,5sleep00-21swapper/022:23:020
912199288,5cyclictest32065-21latency00:40:210
9121992816,8cyclictest18435-21cron22:40:000
912199281,4cyclictest81rcu_preempt22:40:120
912199281,4cyclictest81rcu_preempt20:46:200
912199281,4cyclictest81rcu_preempt20:46:200
9121992812,4cyclictest8182-21unixbench_singl23:35:280
9121992811,5cyclictest81rcu_preempt21:20:010
290792281,5sleep00-21swapper/000:32:160
279182281,5sleep00-21swapper/021:37:180
130932281,5sleep00-21swapper/019:30:510
102662281,4sleep00-21swapper/023:42:020
912199279,5cyclictest26851-21timerandwakeup00:25:280
912199276,12cyclictest0-21swapper/021:21:150
912199273,17cyclictest2586-21python21:55:280
912199271,4cyclictest81rcu_preempt19:36:470
912199271,4cyclictest81rcu_preempt00:09:230
9121992711,4cyclictest3-21ksoftirqd/021:05:150
9121992711,4cyclictest3-21ksoftirqd/000:00:150
912199271,13cyclictest3562-21grep23:25:160
912199271,13cyclictest32580-21ntp_states23:15:240
320572271,22sleep09119-21cyclictest20:22:180
9121992612,4cyclictest3-21ksoftirqd/022:50:260
9121992612,4cyclictest3-21ksoftirqd/022:15:260
9121992611,6cyclictest81rcu_preempt22:10:110
9121992611,6cyclictest81rcu_preempt22:10:110
912199261,13cyclictest21775-21taskset22:45:390
912199250,3cyclictest81rcu_preempt21:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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