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2026-04-09 - 14:07

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Default latency plot of shadow in rack #a, slot #8

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 rackaslot8s.osadl.org (updated Thu Apr 09, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1479217897,24sleep20-21swapper/219:09:592
12072151100,44sleep10-21swapper/119:06:321
13312148100,41sleep30-21swapper/319:08:113
14192139102,26sleep00-21swapper/019:09:160
148227456,10sleep00-21swapper/019:10:000
19082690,3sleep01909-21diskmemload21:20:000
131242590,2sleep30-21swapper/323:04:413
56362580,1sleep20-21swapper/221:22:002
210382550,2sleep10-21swapper/121:57:371
213652540,3sleep021364-21ls23:35:000
179192540,2sleep20-21swapper/221:30:542
279352520,2sleep320800-21diskmemload22:26:453
264932520,2sleep30-21swapper/321:37:503
225542510,2sleep10-21swapper/100:23:501
294802500,2sleep30-21swapper/322:52:013
243972490,1sleep30-21swapper/322:24:563
15222470,1sleep20-21swapper/222:07:102
182102420,0sleep1211rcuc/123:08:041
155252390,2sleep10-21swapper/121:53:491
241732370,1chrt0-21swapper/221:35:272
1754993712,7cyclictest12257-21grep22:15:170
235842320,2sleep10-21swapper/122:47:501
175499322,12cyclictest29934-21ssh00:05:120
1754993213,4cyclictest5956-21sh23:22:560
175699307,14cyclictest28-21ksoftirqd/221:47:332
268502280,2sleep20-21swapper/223:38:362
267692280,18sleep10-21swapper/122:50:141
175699287,10cyclictest28-21ksoftirqd/221:42:112
1756992822,4cyclictest28-21ksoftirqd/223:20:012
1756992811,4cyclictest28-21ksoftirqd/200:08:212
1756992810,8cyclictest28-21ksoftirqd/200:02:312
1756992810,8cyclictest28-21ksoftirqd/200:02:302
1756992810,4cyclictest28-21ksoftirqd/223:04:012
296292270,2chrt0-21swapper/022:52:100
266892270,1sleep00-21swapper/022:25:290
175699273,6cyclictest28-21ksoftirqd/223:51:422
1756992711,4cyclictest28-21ksoftirqd/223:58:362
1756992711,4cyclictest28-21ksoftirqd/223:58:352
1756992710,5cyclictest28-21ksoftirqd/221:51:052
1756992710,5cyclictest28-21ksoftirqd/200:15:142
92362260,2sleep00-21swapper/023:25:180
82632260,1sleep10-21swapper/122:36:071
1756992620,3cyclictest28-21ksoftirqd/220:15:002
1756992618,6cyclictest24237-21sh22:24:462
148212260,2sleep30-21swapper/319:40:123
175699259,4cyclictest28-21ksoftirqd/222:42:212
175699257,4cyclictest28-21ksoftirqd/221:27:392
175699257,3cyclictest28-21ksoftirqd/222:32:062
175699252,17cyclictest4116-21apt-get00:10:102
1756992512,4cyclictest28-21ksoftirqd/222:45:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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