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2026-06-06 - 06:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Sat Jun 06, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1893629654,37sleep20-21swapper/219:09:302
1881629369,8sleep00-21swapper/019:07:540
1684428575,6sleep10-21swapper/119:05:061
1894428469,9sleep30-21swapper/319:09:353
19071992524,1cyclictest39-21ksoftirqd/321:27:393
19071992323,0cyclictest0-21swapper/300:27:073
19071992321,1cyclictest39-21ksoftirqd/323:07:093
19071992320,2cyclictest39-21ksoftirqd/322:35:423
19071992318,5cyclictest39-21ksoftirqd/323:39:593
19065992320,2cyclictest23616-21perl00:10:151
1906199230,22cyclictest0-21swapper/023:02:340
1906199230,22cyclictest0-21swapper/022:28:400
19071992216,2cyclictest39-21ksoftirqd/321:35:273
19065992219,2cyclictest13973-21irqstats23:45:181
1906599220,1cyclictest0-21swapper/120:30:121
1906199220,0cyclictest0-21swapper/022:39:360
1906599211,1cyclictest0-21swapper/120:00:141
1906199210,21cyclictest0-21swapper/022:05:270
19071992018,2cyclictest39-21ksoftirqd/322:06:473
1907199201,4cyclictest39-21ksoftirqd/320:45:213
19065992019,1cyclictest0-21swapper/121:00:131
19061992017,2cyclictest29887-21hddtemp_smartct21:20:190
1906199200,20cyclictest0-21swapper/021:33:540
1906199200,20cyclictest0-21swapper/021:33:530
1907199199,5cyclictest39-21ksoftirqd/323:49:363
19071991919,0cyclictest0-21swapper/322:25:533
19071991918,1cyclictest16636-21kworker/u8:121:57:023
19071991917,2cyclictest39-21ksoftirqd/321:17:193
1906599190,1cyclictest0-21swapper/100:35:131
1906199192,15cyclictest1125-21apache_accesses22:40:110
19061991918,1cyclictest0-21swapper/021:12:380
1906199190,16cyclictest0-21swapper/000:01:590
1907199184,9cyclictest39-21ksoftirqd/321:42:093
19071991814,1cyclictest39-21ksoftirqd/300:13:183
1907199180,1cyclictest0-21swapper/323:26:513
19067991817,1cyclictest0-21swapper/221:44:132
1906799180,1cyclictest0-21swapper/222:21:032
1906599189,6cyclictest141rcu_preempt23:32:481
19065991816,1cyclictest0-21swapper/120:05:121
1906599180,18cyclictest0-21swapper/100:30:081
1906199186,1cyclictest11658-21diskmemload22:12:550
1906199185,6cyclictest21428-21perf19:15:010
1907199174,1cyclictest141rcu_preempt21:34:163
1907199174,1cyclictest141rcu_preempt21:34:153
1907199173,4cyclictest39-21ksoftirqd/322:50:543
19071991716,1cyclictest0-21swapper/322:19:043
19071991713,2cyclictest381rcuc/319:15:143
1907199171,1cyclictest0-21swapper/323:15:523
1907199171,14cyclictest39-21ksoftirqd/322:45:133
1906799171,5cyclictest141rcu_preempt23:00:102
1906799170,16cyclictest0-21swapper/222:44:012
1906599171,1cyclictest10042-21df22:45:141
1906199178,8cyclictest16759-21ssh22:30:140
1907199163,10cyclictest39-21ksoftirqd/322:04:233
1907199161,3cyclictest39-21ksoftirqd/322:44:423
1907199160,4cyclictest39-21ksoftirqd/323:13:483
1907199160,3cyclictest0-21swapper/322:31:263
19067991613,2cyclictest5569-21irqstats23:40:182
19065991616,0cyclictest0-21swapper/122:31:471
19065991612,3cyclictest0-21swapper/123:22:021
1906599160,1cyclictest0-21swapper/122:22:541
1906199160,1cyclictest0-21swapper/021:19:380
1907199157,3cyclictest39-21ksoftirqd/323:20:313
1907199156,6cyclictest39-21ksoftirqd/300:38:253
19071991510,2cyclictest39-21ksoftirqd/322:58:143
1907199150,15cyclictest0-21swapper/321:47:453
1906799150,1cyclictest0-21swapper/221:12:392
1906599157,2cyclictest537-21snmpd23:54:231
1906599153,8cyclictest11658-21diskmemload21:15:131
1906599151,1cyclictest0-21swapper/122:08:131
1906599151,13cyclictest0-21swapper/122:10:541
1907199147,6cyclictest7220-21ssh00:20:093
19071991411,2cyclictest3998-21grep20:50:253
19071991411,2cyclictest17277-21wc20:10:253
19071991411,2cyclictest15289-21cut21:50:163
19071991411,0cyclictest39-21ksoftirqd/323:52:423
19071991410,2cyclictest7782-21cut21:00:153
19071991410,1cyclictest0-21swapper/322:14:153
1907199140,9cyclictest15328-21sh21:11:203
1906799148,2cyclictest225-21systemd-journal00:18:532
1906799143,6cyclictest23083-21grep00:10:132
19067991413,1cyclictest0-21swapper/223:17:352
19067991411,2cyclictest31904-21cron22:19:592
19067991410,3cyclictest24427-21wc21:55:222
1906799140,13cyclictest0-21swapper/219:10:112
19065991413,1cyclictest11658-21diskmemload21:56:381
19065991413,1cyclictest0-21swapper/123:28:181
1906599140,9cyclictest0-21swapper/121:32:411
1906599140,9cyclictest0-21swapper/121:32:401
1906199149,3cyclictest24056-21ls19:20:000
1906199144,5cyclictest225-21systemd-journal00:14:590
19061991414,0cyclictest0-21swapper/023:09:430
1906199140,14cyclictest0-21swapper/021:55:120
1906199140,0cyclictest0-21swapper/023:27:050
1907199139,3cyclictest6958-21ssh00:00:193
1907199138,5cyclictest39-21ksoftirqd/300:33:233
1907199137,6cyclictest13960-21kworker/u8:100:06:193
1907199134,1cyclictest141rcu_preempt23:03:553
19071991312,1cyclictest0-21swapper/323:40:083
19071991310,2cyclictest860-21sed00:15:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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