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2026-04-08 - 00:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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.

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 rack7slot3s.osadl.org (updated Tue Apr 07, 2026 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15345991262,86cyclictest15339-21cyclictest16:30:420
2656121250,6sleep31534899cyclictest19:08:183
1143021190,3sleep011409-21ssh18:50:560
15345991091,4cyclictest0-21swapper/020:51:590
15345991031,92cyclictest19020-21tr16:40:520
15345991031,92cyclictest19020-21tr16:40:520
15345991031,91cyclictest24700-21ssh20:21:090
15345991011,90cyclictest8468-21apt21:20:390
1534599988,63cyclictest21535-21proc_pri16:46:040
5392920,5sleep31534899cyclictest21:10:533
1534599923,70cyclictest18801-21idleruntime-cro20:15:390
1534599922,76cyclictest0-21swapper/017:41:090
1534599921,73cyclictest22689-21latency_hist18:20:400
1534599921,72cyclictest0-21swapper/019:06:070
1534599911,2cyclictest0-21swapper/019:50:400
1534599911,2cyclictest0-21swapper/019:50:400
1534599892,67cyclictest0-21swapper/020:41:010
1534599881,70cyclictest17504-21tune2fs16:35:570
1534599881,4cyclictest14124-21unixbench-2d19:31:070
1534599871,48cyclictest2741-21latency_hist17:25:410
1534599859,55cyclictest3556-21latency_hist20:35:400
1534599859,55cyclictest3556-21latency_hist20:35:400
1534599851,67cyclictest25885-21grep21:01:080
1534599851,66cyclictest30726-21ssh21:46:060
1534599851,4cyclictest19443-21fschecks_count20:15:580
1534599832,69cyclictest0-21swapper/018:25:520
1534599832,69cyclictest0-21swapper/018:25:520
15345998314,34cyclictest27447-21cat18:31:060
1534599822,68cyclictest0-21swapper/019:16:000
1534599821,66cyclictest4411-21latency_hist17:30:400
1534599816,59cyclictest0-21swapper/021:05:530
1534599814,63cyclictest0-21swapper/020:00:590
1534599814,63cyclictest0-21swapper/020:00:590
1534599811,67cyclictest31021-21grep19:51:030
1534599802,61cyclictest0-21swapper/017:35:540
1534599792,61cyclictest0-21swapper/021:12:090
1534599791,4cyclictest908-21runrttasks19:25:340
1534599791,3cyclictest19698-21ssh19:00:500
1534599782,63cyclictest0-21swapper/021:51:410
1534599781,64cyclictest26114-21diskmemload21:26:020
1534599781,64cyclictest0-21swapper/019:56:100
112162780,6sleep11534699cyclictest20:06:011
1534599771,63cyclictest0-21swapper/018:36:310
1534599771,62cyclictest0-21swapper/019:25:510
1534599762,63cyclictest0-21swapper/021:37:370
1534599762,63cyclictest0-21swapper/021:37:370
1534599762,63cyclictest0-21swapper/017:01:520
1534599762,56cyclictest0-21swapper/017:30:570
1534599762,56cyclictest0-21swapper/017:30:570
1534599761,63cyclictest0-21swapper/019:14:220
1534599761,5cyclictest17268-21grep19:35:540
1534599761,4cyclictest9415-21ls21:21:000
1534599761,4cyclictest9415-21ls21:21:000
1534599761,4cyclictest12604-21ssh20:07:220
1534599761,2cyclictest0-21swapper/021:40:460
1534599761,2cyclictest0-21swapper/019:45:050
1534599760,3cyclictest20543-21ssh21:34:490
51482750,2sleep20-21swapper/218:43:172
1534599757,42cyclictest0-21swapper/018:10:530
56062740,2sleep30-21swapper/321:55:463
1534599741,60cyclictest0-21swapper/018:55:440
1534599741,60cyclictest0-21swapper/018:55:440
1534599741,5cyclictest28381-21cat20:26:000
1534599741,47cyclictest0-21swapper/018:47:190
1534599741,37cyclictest13929-21chrt20:46:590
1534599731,4cyclictest917-21snmpd17:49:020
1534599731,2cyclictest0-21swapper/018:20:580
1534699722,15cyclictest7750irq/56-dwc_otg17:40:511
1534599722,63cyclictest0-21swapper/018:10:070
1534599722,57cyclictest0-21swapper/017:57:170
1534599721,2cyclictest0-21swapper/018:42:130
1534599712,32cyclictest4198-21fschecks_time20:35:580
1534599711,33cyclictest0-21swapper/017:15:170
1534599701,4cyclictest7820-21ssh21:57:400
178312690,2sleep30-21swapper/320:14:013
1534599691,3cyclictest0-21swapper/016:59:190
1534599691,2cyclictest0-21swapper/020:58:170
268972680,2sleep20-21swapper/219:08:532
1534599681,50cyclictest12617-21ntpq17:51:020
1534599681,3cyclictest0-21swapper/018:01:520
15345996810,34cyclictest0-21swapper/016:51:040
194292650,2sleep20-21swapper/219:00:402
194292650,2sleep20-21swapper/219:00:402
1534599642,59cyclictest0-21swapper/017:17:580
1534599641,2cyclictest0-21swapper/017:07:310
312432630,1sleep10-21swapper/121:46:221
213242560,2sleep30-21swapper/320:17:393
15348995518,20cyclictest24443-21ls20:21:073
15348995514,20cyclictest22736-21/usr/sbin/munin18:20:593
260772540,2sleep30-21swapper/321:01:233
1534799546,29cyclictest0-21swapper/219:40:532
1534699544,6cyclictest7750irq/56-dwc_otg19:25:521
240892530,2sleep10-21swapper/121:00:201
15347995319,19cyclictest29862-21ssh19:11:352
15346995123,6cyclictest20116-21cron20:55:391
15348995015,25cyclictest16073-21ssh21:29:143
1534799506,24cyclictest7950irq/56-dwc_otg_20:49:562
15347995013,20cyclictest5128-21ls17:30:592
15347995013,20cyclictest5128-21ls17:30:592
15348994912,12cyclictest4633-21diskstats19:20:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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