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2026-06-15 - 10:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 rack0slot4s.osadl.org (updated Mon Jun 15, 2026 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23314052371363,5sleep130-21swapper/1319:09:455
23313032364327,12sleep120-21swapper/1219:08:234
23313792363321,13sleep60-21swapper/619:09:2212
23279472359320,13sleep100-21swapper/1019:05:082
23313472354333,13sleep20-21swapper/219:09:028
23312342354333,14sleep50-21swapper/519:07:2811
23312002353333,13sleep150-21swapper/1519:07:067
23313462352332,13sleep10-21swapper/119:09:011
23312682352332,13sleep30-21swapper/319:07:589
23314002351329,14sleep80-21swapper/819:09:4014
23313512349329,13sleep40-21swapper/419:09:0410
23312982348327,13sleep70-21swapper/719:08:1813
23279512347327,13sleep110-21swapper/1119:05:093
23311382345324,14sleep90-21swapper/919:06:1115
23311432344324,14sleep140-21swapper/1419:06:176
23312482339317,15sleep00-21swapper/019:07:390
25232922590,0sleep20-21swapper/222:18:548
2331848994746,1cyclictest0-21swapper/120:55:151
233185099420,30cyclictest2567331-21kworker/2:0+mm_percpu_wq23:00:128
233185099420,30cyclictest2567331-21kworker/2:0+mm_percpu_wq23:00:118
2331850994141,0cyclictest0-21swapper/221:23:058
2331850993736,0cyclictest0-21swapper/221:13:358
2331850993735,2cyclictest2507452-21grep22:05:198
2331885993636,0cyclictest0-21swapper/1423:00:126
2331885993636,0cyclictest0-21swapper/1423:00:116
2331885993635,1cyclictest1769-21arpwatch22:35:576
2331850993635,1cyclictest2566343-21/usr/sbin/munin22:50:218
2331850993635,1cyclictest2566343-21/usr/sbin/munin22:50:218
2331850993635,1cyclictest2485408-21kworker/u32:4+events_unbound22:47:158
2331850993634,0cyclictest0-21swapper/221:37:358
2331850993633,3cyclictest0-21swapper/221:51:418
2331850993535,0cyclictest0-21swapper/223:42:148
2331850993533,2cyclictest2651887-21ssh23:56:238
2331850993533,2cyclictest0-21swapper/223:18:078
2331850993533,0cyclictest0-21swapper/223:30:468
2331850993533,0cyclictest0-21swapper/222:38:298
2331850993533,0cyclictest0-21swapper/200:35:478
233185099352,31cyclictest0-21swapper/223:45:438
233185099351,31cyclictest2606689-21kworker/2:1-events00:00:038
2331885993433,1cyclictest0-21swapper/1422:13:036
2331850993433,1cyclictest0-21swapper/222:29:258
2331850993433,1cyclictest0-21swapper/222:10:198
2331850993433,1cyclictest0-21swapper/200:23:438
2331850993432,2cyclictest0-21swapper/223:21:418
2331850993432,2cyclictest0-21swapper/221:34:298
2331850993432,2cyclictest0-21swapper/221:00:138
2331850993432,2cyclictest0-21swapper/220:10:138
2331850993431,3cyclictest0-21swapper/221:58:058
2331850993431,1cyclictest2606689-21kworker/2:1-events23:39:578
2331850993429,3cyclictest0-21swapper/223:14:178
2331850993429,3cyclictest0-21swapper/221:26:138
2331850993428,1cyclictest211rcu_preempt23:50:158
233185099340,31cyclictest2308972-21kworker/2:0+mm_percpu_wq19:45:178
233185099340,31cyclictest2308972-21kworker/2:0+mm_percpu_wq19:45:178
2331885993333,0cyclictest0-21swapper/1422:30:206
2331885993333,0cyclictest0-21swapper/1421:43:516
2331885993333,0cyclictest0-21swapper/1400:00:076
2331885993332,1cyclictest0-21swapper/1400:28:236
233188099330,30cyclictest0-21swapper/1222:10:154
2331864993329,4cyclictest1774-21snmpd20:03:2813
233185099334,29cyclictest0-21swapper/222:59:258
233185099334,29cyclictest0-21swapper/222:59:258
233185099333,30cyclictest0-21swapper/222:42:358
2331850993332,1cyclictest0-21swapper/222:30:218
2331850993332,1cyclictest0-21swapper/222:24:498
2331850993332,0cyclictest0-21swapper/223:25:198
2331850993331,2cyclictest0-21swapper/222:02:378
2331850993331,2cyclictest0-21swapper/221:40:538
2331850993331,2cyclictest0-21swapper/220:55:018
2331850993331,0cyclictest0-21swapper/221:15:178
2331850993331,0cyclictest0-21swapper/200:05:398
2331850993329,4cyclictest2666291-21kworker/2:0-events00:19:208
2331850993329,4cyclictest2381613-21/usr/sbin/munin20:05:238
2331850993329,3cyclictest0-21swapper/200:25:028
2331850993328,0cyclictest211rcu_preempt00:11:398
233185099330,32cyclictest2481612-21ntp_offset21:45:228
233185099330,32cyclictest2308972-21kworker/2:0+events19:35:178
2331885993232,0cyclictest0-21swapper/1423:48:486
2331885993232,0cyclictest0-21swapper/1423:40:456
2331885993232,0cyclictest0-21swapper/1423:18:056
2331885993232,0cyclictest0-21swapper/1422:44:556
2331885993232,0cyclictest0-21swapper/1422:18:536
2331885993232,0cyclictest0-21swapper/1422:09:046
2331885993232,0cyclictest0-21swapper/1421:15:596
2331859993228,4cyclictest0-21swapper/519:25:1211
233185999320,29cyclictest0-21swapper/520:11:0511
2331850993231,1cyclictest0-21swapper/219:10:198
2331850993230,2cyclictest0-21swapper/223:09:598
2331850993230,2cyclictest0-21swapper/220:15:258
2331850993230,2cyclictest0-21swapper/219:20:218
2331850993230,2cyclictest0-21swapper/200:31:098
2331850993229,1cyclictest2351192-21df19:30:138
233185099320,29cyclictest421ktimers/219:55:178
2331890993130,1cyclictest1774-21snmpd22:53:107
2331890993130,1cyclictest1774-21snmpd22:53:107
233189099310,30cyclictest0-21swapper/1523:00:317
233189099310,30cyclictest0-21swapper/1523:00:317
2331885993131,0cyclictest0-21swapper/1423:33:196
2331885993131,0cyclictest0-21swapper/1422:04:036
2331885993131,0cyclictest0-21swapper/1421:55:516
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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