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2025-07-19 - 06:35

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 50 highest latencies:
System rack7slot7s.osadl.org (updated Sat Jul 19, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1729829884,9sleep30-21swapper/319:09:543
1696429676,9sleep10-21swapper/119:05:341
1718327762,10sleep00-21swapper/019:08:220
1719027464,6sleep20-21swapper/219:08:282
17405992725,1cyclictest0-21swapper/300:12:083
17401992624,1cyclictest12631-21sed21:30:262
1740199260,22cyclictest0-21swapper/220:20:132
1740199242,1cyclictest0-21swapper/222:05:122
1739999231,21cyclictest0-21swapper/123:35:431
17396992221,1cyclictest0-21swapper/000:20:530
316142210,0chrt0-21swapper/022:22:430
1739999217,2cyclictest9986-21diskmemload23:51:131
1740599200,19cyclictest0-21swapper/323:40:283
28372190,1chrt2838-21/usr/sbin/munin00:05:271
17401991918,1cyclictest21238-21wget20:25:162
17401991917,1cyclictest11910-21grep21:50:222
1740199190,1cyclictest0-21swapper/223:28:062
1739699191,18cyclictest0-21swapper/022:51:350
1740199187,9cyclictest7744-21snmpd00:26:392
17401991813,3cyclictest9986-21diskmemload22:59:272
1740199180,1cyclictest141rcu_preempt00:12:422
1740199180,1cyclictest0-21swapper/200:00:542
1740199180,17cyclictest0-21swapper/219:20:182
17396991818,0cyclictest0-21swapper/000:05:460
17396991813,3cyclictest13-21ksoftirqd/021:47:310
17396991813,2cyclictest13-21ksoftirqd/021:44:590
216252170,0sleep20-21swapper/200:20:022
17399991716,1cyclictest25-21ksoftirqd/121:16:541
17399991710,5cyclictest26221-21perf22:40:011
1739699178,7cyclictest9897-21munin-run23:09:590
17396991715,1cyclictest13-21ksoftirqd/021:26:180
17396991714,2cyclictest13-21ksoftirqd/023:35:040
17396991713,2cyclictest13-21ksoftirqd/022:07:520
1740599164,11cyclictest0-21swapper/321:00:143
1740199160,3cyclictest0-21swapper/221:18:082
1740199160,2cyclictest0-21swapper/223:40:462
1740199160,1cyclictest0-21swapper/222:22:322
1740199160,1cyclictest0-21swapper/222:03:012
1740199160,1cyclictest0-21swapper/221:40:592
1740199160,16cyclictest0-21swapper/223:47:162
1740199160,14cyclictest0-21swapper/223:18:032
1739999160,3cyclictest0-21swapper/122:22:511
1739699169,2cyclictest13-21ksoftirqd/023:18:060
1739699163,2cyclictest141rcu_preempt19:25:150
1739699162,13cyclictest18641-21apache_volume22:55:160
17396991614,2cyclictest13-21ksoftirqd/021:35:000
1739699160,1cyclictest141rcu_preempt23:28:010
1740599150,15cyclictest0-21swapper/321:30:103
1740199150,15cyclictest0-21swapper/219:40:182
1740199150,14cyclictest0-21swapper/222:37:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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