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2024-04-24 - 09:30

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 Wed Apr 24, 2024 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23343210288,10sleep10-21swapper/119:07:231
2342729986,9sleep30-21swapper/319:08:313
2338628467,13sleep20-21swapper/219:07:572
2328328166,10sleep00-21swapper/019:06:380
239352650,0sleep10-21swapper/121:36:581
2363599250,1cyclictest0-21swapper/223:25:502
2363599250,1cyclictest0-21swapper/223:25:492
2363199255,19cyclictest0-21swapper/120:15:131
2363599230,21cyclictest0-21swapper/222:21:502
2363799228,7cyclictest2648-21ssh21:23:123
23637992216,5cyclictest39-21ksoftirqd/322:08:593
2363799221,19cyclictest0-21swapper/323:05:003
2363799220,5cyclictest0-21swapper/321:25:583
2363799213,1cyclictest224-21systemd-journal19:11:243
2363799211,4cyclictest4485-21cut22:50:143
23635992114,4cyclictest32-21ksoftirqd/222:55:172
2363599210,21cyclictest0-21swapper/223:41:452
2362999210,1cyclictest0-21swapper/021:17:470
2363799202,5cyclictest21911-21tune2fs00:35:203
2363799201,3cyclictest0-21swapper/323:29:183
2363799201,3cyclictest0-21swapper/323:29:173
2363799200,4cyclictest10676-21aten2_r7power_p21:50:143
2363799200,2cyclictest0-21swapper/322:41:133
23635992018,1cyclictest32-21ksoftirqd/200:33:032
23635992018,1cyclictest0-21swapper/223:50:212
2363599201,18cyclictest0-21swapper/219:40:162
2363599201,18cyclictest0-21swapper/219:40:152
2363199202,3cyclictest141rcu_preempt22:49:191
2363799193,1cyclictest0-21swapper/323:06:363
23635991917,1cyclictest32-21ksoftirqd/221:23:572
2363599190,19cyclictest0-21swapper/223:15:092
2363599190,17cyclictest0-21swapper/200:10:362
2363199191,15cyclictest10201-21runrttasks21:28:101
23629991918,1cyclictest6497-21kworker/u8:221:49:560
2362999190,18cyclictest0-21swapper/022:26:200
308132180,0sleep30-21swapper/323:50:263
2363799184,5cyclictest19496-21tr21:55:223
23635991817,1cyclictest32-21ksoftirqd/221:17:152
2363199182,15cyclictest14469-21diskmemload22:07:531
23629991817,1cyclictest0-21swapper/023:52:190
2363799178,2cyclictest4673-21sh21:45:283
2363799178,2cyclictest31962-21ssh21:42:203
2363799173,3cyclictest7148-21ssh23:56:063
2363799173,2cyclictest0-21swapper/320:45:313
2363799171,12cyclictest0-21swapper/300:10:123
2363799170,16cyclictest28918-21taskset19:24:093
2363199170,15cyclictest12498-21wc21:05:151
23629991715,2cyclictest13-21ksoftirqd/000:22:410
2363799169,6cyclictest9216-21head20:55:293
2363799169,6cyclictest1509-21uname20:40:233
2363799168,8cyclictest18134-21sed00:04:593
2363799168,7cyclictest26738-21ssh21:17:303
2363799168,7cyclictest20702-21sed20:15:013
2363799168,7cyclictest17523-21grep00:30:313
2363799168,7cyclictest15586-21taskset22:57:023
2363799168,7cyclictest13049-21rm00:26:223
2363799168,7cyclictest10013-21ssh23:36:293
2363799167,2cyclictest18489-21ssh22:37:213
2363799160,15cyclictest20062-21sh22:16:593
23635991615,1cyclictest0-21swapper/222:51:172
2363199161,13cyclictest16546-21sensors21:10:271
2362999164,6cyclictest27809-21perf20:29:590
2362999164,6cyclictest14478-21awk21:10:000
2362999160,0cyclictest0-21swapper/022:47:110
2363799159,5cyclictest25021-21grep20:20:303
2363799159,5cyclictest1818-21tr19:35:173
2363799158,6cyclictest7060-21rm00:20:503
2363799158,6cyclictest17007-21ssh21:32:303
2363799158,6cyclictest16665-21grep20:05:173
2363799158,6cyclictest13607-21ssh22:34:513
2363799158,6cyclictest11741-21apache222:04:453
2363799158,2cyclictest5595-21ssh23:34:123
2363799158,1cyclictest21431-21cat23:45:003
2363799157,2cyclictest6178-21expr20:50:233
2363799157,2cyclictest16464-21ssh21:10:253
2363799157,2cyclictest12392-21grep19:55:243
2363799157,2cyclictest1132-21sed00:15:293
2363799155,3cyclictest2491-21basename23:10:183
2363799150,5cyclictest0-21swapper/321:35:123
2363799150,4cyclictest224-21systemd-journal20:40:003
2363799150,14cyclictest3683-21ssh22:49:583
2363799150,14cyclictest12295-21ssh23:15:553
2363799150,13cyclictest0-21swapper/323:47:143
2363599159,5cyclictest11767-21apache221:45:492
2363599151,1cyclictest0-21swapper/223:10:402
23635991511,1cyclictest141rcu_preempt22:17:502
2363599150,15cyclictest0-21swapper/223:24:522
2363199159,4cyclictest25984-21munin-plugin-st19:15:001
2362999156,8cyclictest31380-21munin-run19:30:000
2362999151,8cyclictest28660-21perf22:45:000
2362999150,2cyclictest0-21swapper/022:23:570
2363799148,5cyclictest31295-21taskset19:29:133
2363799148,5cyclictest157852sleep322:14:533
2363799147,2cyclictest12721-21cat21:05:173
2363799146,2cyclictest5692-21sed19:40:333
2363799146,2cyclictest5692-21sed19:40:333
2363799146,2cyclictest18986-21cat23:20:283
2363799146,1cyclictest24720-21df_abs22:20:163
2363799146,1cyclictest20082-21chrt20:10:523
2363799145,2cyclictest31711-21cut22:25:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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