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2026-05-09 - 21:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Sat May 09, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1760621150,5sleep017605-21wc08:56:540
57521090,7sleep3579-21needreboot08:31:543
57521090,7sleep3579-21needreboot08:31:543
313899923,42cyclictest0-21swapper/007:51:480
313899914,36cyclictest0-21swapper/008:52:010
3138999134,49cyclictest0-21swapper/007:28:010
313899913,38cyclictest0-21swapper/009:41:420
3138999127,12cyclictest0-21swapper/008:46:590
313899904,13cyclictest0-21swapper/006:51:560
313899903,39cyclictest0-21swapper/008:26:440
313899903,39cyclictest0-21swapper/008:26:440
313899903,11cyclictest0-21swapper/009:21:410
3138999018,12cyclictest0-21swapper/009:40:130
313899894,39cyclictest0-21swapper/008:01:560
313899894,36cyclictest0-21swapper/009:16:520
3138998931,11cyclictest0-21swapper/008:36:540
313899893,38cyclictest0-21swapper/007:02:020
313899884,36cyclictest0-21swapper/009:01:430
3138998831,10cyclictest18737-21sed09:46:470
313899883,36cyclictest0-21swapper/007:21:450
3138998738,43cyclictest25864-21chrt09:09:570
3138998738,43cyclictest25864-21chrt09:09:570
3138998736,8cyclictest14903-21tail06:21:540
313899873,33cyclictest0-21swapper/009:31:280
3138998728,13cyclictest0-21swapper/010:11:390
313899863,40cyclictest0-21swapper/010:01:390
313899863,33cyclictest0-21swapper/007:56:420
313899854,37cyclictest0-21swapper/008:22:000
313899854,36cyclictest7611-21yum10:17:020
313899853,35cyclictest0-21swapper/007:34:030
3138998522,12cyclictest0-21swapper/007:36:460
313899843,40cyclictest0-21swapper/009:11:580
313899843,40cyclictest0-21swapper/009:11:580
313899834,36cyclictest0-21swapper/010:06:380
313899833,37cyclictest0-21swapper/007:11:560
313899833,37cyclictest0-21swapper/007:11:560
3138998230,13cyclictest0-21swapper/008:45:590
313899823,35cyclictest0-21swapper/005:41:500
3138998131,10cyclictest0-21swapper/008:19:130
3138998128,11cyclictest0-21swapper/008:08:200
313899804,37cyclictest0-21swapper/008:34:580
313899804,37cyclictest0-21swapper/008:34:580
313899804,12cyclictest0-21swapper/009:51:470
313899803,33cyclictest0-21swapper/006:26:470
3138998027,13cyclictest0-21swapper/006:58:080
3138997932,10cyclictest0-21swapper/007:46:420
313899784,35cyclictest0-21swapper/007:07:040
313899784,35cyclictest0-21swapper/007:07:040
313899783,37cyclictest0-21swapper/005:57:410
3138997629,11cyclictest0-21swapper/008:12:040
313899753,31cyclictest0-21swapper/007:43:230
3138997529,11cyclictest0-21swapper/009:56:530
3138997230,7cyclictest10155-21ssh09:34:000
313899722,11cyclictest0-21swapper/005:14:120
3138997129,10cyclictest0-21swapper/005:01:380
321562670,5sleep232274-21cpuspeed05:51:492
313999655,53cyclictest24464-21taskset05:34:501
314199635,42cyclictest0-21swapper/308:08:163
3141996319,26cyclictest1247-21lldpd09:05:293
3140996346,10cyclictest17797-21grep07:21:532
313999634,52cyclictest26729-21munin-run07:36:321
3139996323,13cyclictest0-21swapper/110:11:541
313999624,52cyclictest0-21swapper/110:06:501
3139996230,12cyclictest0-21swapper/109:08:071
3139996230,12cyclictest0-21swapper/109:08:071
313999623,53cyclictest0-21swapper/109:26:411
111132620,3sleep311117-21sh08:00:463
314199614,37cyclictest17827-21proc_pri08:56:583
314199614,27cyclictest0-21swapper/306:01:363
3139996112,41cyclictest0-21swapper/109:21:411
314199606,48cyclictest0-21swapper/307:31:483
314199604,38cyclictest0-21swapper/307:24:183
314099603,50cyclictest0-21swapper/208:36:522
314099603,14cyclictest0-21swapper/210:16:542
3139996021,14cyclictest0-21swapper/107:36:461
3139996018,37cyclictest0-21swapper/109:18:051
3141995940,13cyclictest26602-21unixbench_singl05:37:113
314199593,41cyclictest0-21swapper/310:20:363
3141995920,13cyclictest0-21swapper/305:26:563
3141995920,12cyclictest1287-21snmpd10:11:523
3141995914,25cyclictest14620-21threads08:51:593
3141995913,28cyclictest0-21swapper/309:51:423
314099594,47cyclictest1287-21snmpd09:21:442
314099593,48cyclictest0-21swapper/208:56:522
314099593,37cyclictest0-21swapper/206:11:592
314099593,31cyclictest0-21swapper/206:56:142
313999594,49cyclictest0-21swapper/107:31:221
3139995927,25cyclictest0-21swapper/108:26:441
3139995927,25cyclictest0-21swapper/108:26:441
314199585,25cyclictest0-21swapper/308:26:593
314199585,25cyclictest0-21swapper/308:26:593
314199584,28cyclictest0-21swapper/309:31:293
3141995814,25cyclictest20107-21unixbench_multi08:12:033
3141995812,27cyclictest0-21swapper/309:10:523
3141995812,27cyclictest0-21swapper/309:10:523
314099584,45cyclictest0-21swapper/208:21:582
314099583,37cyclictest0-21swapper/209:01:442
314099583,13cyclictest0-21swapper/207:52:082
314099583,13cyclictest0-21swapper/207:04:172
4172570,5sleep1419-21gltestperf05:51:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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