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2026-06-03 - 13:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 100 highest latencies:
System rackcslot8s.osadl.org (updated Wed Jun 03, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1781526536,13sleep20-21swapper/219:05:182
111391620,6ptp4l0-21swapper/019:05:110
111391600,5ptp4l0-21swapper/519:07:325
111391600,29ptp4l0-21swapper/119:07:161
134462580,0sleep20-21swapper/222:03:162
1866225634,7sleep70-21swapper/719:06:357
33652550,0sleep50-21swapper/523:16:415
111391550,3ptp4l49-21ksoftirqd/419:05:214
1888225039,6sleep60-21swapper/619:09:236
1857424634,7sleep30-21swapper/319:05:273
111391330,1ptp4l22154-21hddtemp_smartct22:15:134
111391330,1ptp4l22154-21hddtemp_smartct22:15:124
111391330,0ptp4l0-21swapper/421:50:464
111391330,0ptp4l0-21swapper/023:52:280
111391320,0ptp4l4472-21sh00:02:307
111391320,0ptp4l0-21swapper/721:00:157
111391320,0ptp4l0-21swapper/023:49:450
111391320,0ptp4l0-21swapper/022:29:280
111391320,0ptp4l0-21swapper/000:15:210
111391310,0ptp4l0-21swapper/423:25:554
111391310,0ptp4l0-21swapper/422:56:084
111391310,0ptp4l0-21swapper/022:58:160
111391310,0ptp4l0-21swapper/022:44:140
111391310,0ptp4l0-21swapper/021:18:170
111391300,0ptp4l0-21swapper/423:08:524
111391300,0ptp4l0-21swapper/422:52:254
111391300,0ptp4l0-21swapper/422:41:174
111391300,0ptp4l0-21swapper/421:41:054
111391300,0ptp4l0-21swapper/400:23:154
111391300,0ptp4l0-21swapper/319:55:183
111391300,0ptp4l0-21swapper/222:18:032
111391300,0ptp4l0-21swapper/222:18:022
111391300,0ptp4l0-21swapper/022:49:260
111391300,0ptp4l0-21swapper/021:26:540
111391290,1ptp4l27442-21ssh22:20:474
111391290,0ptp4l0-21swapper/723:47:567
111391290,0ptp4l0-21swapper/423:51:194
111391290,0ptp4l0-21swapper/423:48:394
111391290,0ptp4l0-21swapper/423:21:094
111391290,0ptp4l0-21swapper/422:46:214
111391290,0ptp4l0-21swapper/422:26:364
111391290,0ptp4l0-21swapper/421:39:344
111391290,0ptp4l0-21swapper/023:42:270
111391290,0ptp4l0-21swapper/021:58:580
111391280,0ptp4l0-21swapper/522:57:295
111391280,0ptp4l0-21swapper/423:37:574
111391280,0ptp4l0-21swapper/421:34:154
111391280,0ptp4l0-21swapper/421:27:044
111391280,0ptp4l0-21swapper/421:24:384
111391280,0ptp4l0-21swapper/321:12:003
111391280,0ptp4l0-21swapper/021:44:080
111391280,0ptp4l0-21swapper/000:26:580
111391270,7ptp4l0-21swapper/719:57:597
111391270,4ptp4l481ktimersoftd/400:33:464
111391270,0ptp4l0-21swapper/521:35:185
111391270,0ptp4l0-21swapper/422:02:074
111391270,0ptp4l0-21swapper/421:58:504
111391270,0ptp4l0-21swapper/421:17:534
111391270,0ptp4l0-21swapper/420:43:104
111391270,0ptp4l0-21swapper/420:05:184
111391270,0ptp4l0-21swapper/023:56:350
111391270,0ptp4l0-21swapper/023:30:360
111391270,0ptp4l0-21swapper/023:26:550
111391270,0ptp4l0-21swapper/023:18:410
111391270,0ptp4l0-21swapper/023:08:540
111391270,0ptp4l0-21swapper/021:51:150
111391270,0ptp4l0-21swapper/000:21:350
111391260,1ptp4l1498-21cpuspeed_turbos19:50:110
111391260,0ptp4l0-21swapper/723:07:527
111391260,0ptp4l0-21swapper/722:30:187
111391260,0ptp4l0-21swapper/721:13:227
111391260,0ptp4l0-21swapper/623:39:386
111391260,0ptp4l0-21swapper/522:21:325
111391260,0ptp4l0-21swapper/521:19:435
111391260,0ptp4l0-21swapper/400:25:054
111391260,0ptp4l0-21swapper/323:07:063
111391260,0ptp4l0-21swapper/220:34:022
111391260,0ptp4l0-21swapper/100:35:131
111391260,0ptp4l0-21swapper/023:22:580
111391260,0ptp4l0-21swapper/022:31:480
111391260,0ptp4l0-21swapper/020:37:270
111391260,0ptp4l0-21swapper/020:16:190
111391260,0ptp4l0-21swapper/020:08:010
111391260,0ptp4l0-21swapper/020:00:290
111391260,0ptp4l0-21swapper/019:37:420
111391260,0ptp4l0-21swapper/019:37:410
111391260,0ptp4l0-21swapper/000:08:120
111391250,4ptp4l0-21swapper/020:13:110
111391250,1ptp4l23644-21fw_forwarded_lo23:45:125
111391250,0ptp4l0-21swapper/622:20:216
111391250,0ptp4l0-21swapper/522:05:235
111391250,0ptp4l0-21swapper/500:34:285
111391250,0ptp4l0-21swapper/423:44:394
111391250,0ptp4l0-21swapper/422:08:434
111391250,0ptp4l0-21swapper/421:48:064
111391250,0ptp4l0-21swapper/421:05:204
111391250,0ptp4l0-21swapper/300:20:203
111391250,0ptp4l0-21swapper/222:58:442
111391250,0ptp4l0-21swapper/023:00:050
111391250,0ptp4l0-21swapper/021:45:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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