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2026-06-06 - 14:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot4s.osadl.org (updated Sat Jun 06, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3251899573,44cyclictest17586-21ssh23:35:122
3253199565,8cyclictest0-21swapper/322:50:133
3250999541,37cyclictest24994-21ssh21:50:131
3253199452,27cyclictest35966irq/58-eth021:55:123
3251899451,26cyclictest21827-21ssh21:30:132
3251899443,34cyclictest16150-21ssh21:45:142
3253199434,26cyclictest35966irq/58-eth022:00:123
3253199433,24cyclictest35966irq/58-eth023:05:123
3253199413,26cyclictest35966irq/58-eth000:05:133
3250999411,27cyclictest1597-21ssh21:55:131
3253199403,23cyclictest35966irq/58-eth000:00:103
32518994010,21cyclictest27-21ksoftirqd/222:20:122
3253199391,24cyclictest35966irq/58-eth000:35:133
32518993911,9cyclictest27-21ksoftirqd/222:50:132
3250999391,24cyclictest20720-21ssh23:55:121
3250999391,24cyclictest20720-21ssh23:55:121
3250999390,32cyclictest2972-21ssh23:45:121
32501993914,4cyclictest131rcu_preempt22:40:130
3253199384,18cyclictest35966irq/58-eth022:20:113
3253199381,24cyclictest35966irq/58-eth019:30:123
3251899381,19cyclictest6246-21ssh00:05:122
3253199364,21cyclictest35966irq/58-eth022:35:133
3253199351,10cyclictest0-21swapper/323:35:113
3251899358,16cyclictest25717-21ssh22:45:142
3251899352,7cyclictest131rcu_preempt23:20:312
3251899352,17cyclictest5295-21ssh23:26:172
3253199344,19cyclictest35966irq/58-eth022:45:123
3251899312,21cyclictest10517-21ssh22:00:132
32518993111,8cyclictest27-21ksoftirqd/200:20:122
3250999310,19cyclictest21-21ksoftirqd/120:55:141
3253199302,19cyclictest35966irq/58-eth021:20:153
3253199301,15cyclictest35966irq/58-eth021:15:123
3251899303,19cyclictest27-21ksoftirqd/221:10:132
3250999301,22cyclictest24132-21ssh00:15:141
3250199302,7cyclictest131rcu_preempt22:35:120
3253199299,5cyclictest0-21swapper/321:50:253
3253199299,17cyclictest0-21swapper/323:55:133
3253199299,17cyclictest0-21swapper/323:55:123
3251899292,7cyclictest0-21swapper/219:10:132
3251899292,21cyclictest0-21swapper/220:20:132
3251899292,21cyclictest0-21swapper/200:15:132
3251899292,20cyclictest0-21swapper/223:05:132
3251899292,11cyclictest12045-21users21:40:302
3251899292,11cyclictest12045-21users21:40:302
3253199286,10cyclictest35966irq/58-eth021:30:133
3251899282,19cyclictest0-21swapper/220:40:122
3251899282,17cyclictest27346irq/40-dwc2_hso22:30:152
3250199281,23cyclictest27430-21ssh21:15:130
3251899275,14cyclictest27346irq/40-dwc2_hso19:25:132
3251899275,14cyclictest27346irq/40-dwc2_hso19:25:132
3250999274,19cyclictest7202-21ssh21:40:121
3250999274,19cyclictest7202-21ssh21:40:121
3250999271,19cyclictest28763-21ssh23:21:161
3250199271,20cyclictest19534-21ssh22:05:140
3253199264,14cyclictest35966irq/58-eth000:25:123
3253199264,14cyclictest0-21swapper/300:30:123
3253199263,15cyclictest0-21swapper/319:20:133
3253199262,16cyclictest0-21swapper/323:26:173
3251899263,15cyclictest27346irq/40-dwc2_hso23:15:122
3251899261,16cyclictest1539-21ls20:15:272
3251899261,12cyclictest12024-21ls21:00:202
3250199263,20cyclictest7221-21ssh21:40:130
3250199263,20cyclictest7221-21ssh21:40:120
32501992618,5cyclictest20114-21sh23:00:110
3253199252,6cyclictest0-21swapper/323:21:163
3253199251,9cyclictest0-21swapper/323:15:263
3253199251,9cyclictest0-21swapper/320:55:213
3253199251,5cyclictest0-21swapper/300:10:213
3253199251,4cyclictest0-21swapper/321:45:313
3253199251,14cyclictest35966irq/58-eth023:30:123
3251899258,7cyclictest131rcu_preempt19:40:022
3251899252,19cyclictest27346irq/40-dwc2_hso00:35:122
32518992514,8cyclictest0-21swapper/220:30:162
32518992512,10cyclictest0-21swapper/220:10:162
32518992511,11cyclictest0-21swapper/219:20:302
3250999253,17cyclictest29688-21ssh00:00:121
3250999251,2cyclictest131rcu_preempt21:05:121
3253199249,6cyclictest0-21swapper/323:52:573
3253199248,6cyclictest0-21swapper/321:12:233
3253199246,6cyclictest0-21swapper/323:02:443
3253199246,6cyclictest0-21swapper/321:41:253
3253199246,6cyclictest0-21swapper/321:41:253
3253199243,8cyclictest0-21swapper/323:40:323
3253199242,4cyclictest0-21swapper/322:40:183
3251899243,6cyclictest0-21swapper/223:48:172
3251899242,8cyclictest0-21swapper/223:50:142
3251899242,19cyclictest0-21swapper/220:50:122
3251899242,15cyclictest8099-21apt-get22:35:132
3251899242,11cyclictest0-21swapper/219:15:142
3251899242,10cyclictest0-21swapper/219:40:122
32518992413,8cyclictest0-21swapper/220:05:222
3250199245,15cyclictest12931-21ssh21:25:130
32501992411,9cyclictest121ksoftirqd/020:55:130
3253199239,3cyclictest0-21swapper/300:24:283
3253199231,8cyclictest0-21swapper/300:15:163
3251899239,10cyclictest630-21Async09:36:312
3251899232,15cyclictest0-21swapper/222:05:032
32518992312,9cyclictest27554-21ssh23:57:552
32518992312,9cyclictest27554-21ssh23:57:542
32518992312,9cyclictest25110-21ssh00:32:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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