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2026-04-26 - 14:10

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 Sun Apr 26, 2026 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1704025010,5sleep10-21swapper/104:26:061
1704025010,5sleep10-21swapper/104:26:061
1699824200,5sleep00-21swapper/004:26:050
1699824200,5sleep00-21swapper/004:26:050
3098521760,5sleep21860299cyclictest07:48:302
107772880,4sleep20-21swapper/209:21:192
77112860,2sleep20-21swapper/206:42:072
6852850,2sleep20-21swapper/208:31:022
305332820,2sleep20-21swapper/207:09:412
308392780,2sleep30-21swapper/309:06:183
269922780,2sleep20-21swapper/207:43:432
269922780,2sleep20-21swapper/207:43:432
218902770,2sleep20-21swapper/206:59:262
1860099721,60cyclictest0-21swapper/009:11:060
317242700,2sleep30-21swapper/305:06:083
189522700,4sleep00-21swapper/004:31:070
1860099685,33cyclictest0-21swapper/008:51:020
1860099685,33cyclictest0-21swapper/008:51:020
18600996813,9cyclictest0-21swapper/007:11:020
18600996752,7cyclictest0-21swapper/008:46:030
18602996627,17cyclictest1982-21ssh09:50:562
1860099662,48cyclictest9-21ksoftirqd/007:15:590
1860099661,29cyclictest0-21swapper/009:06:030
255302650,7sleep11860199cyclictest09:01:011
18602996523,22cyclictest18200-21ssh07:32:462
18602996523,12cyclictest19730-21grep04:31:172
18602996514,8cyclictest7950irq/56-dwc_otg_08:26:022
18601996513,11cyclictest7950irq/56-dwc_otg_09:56:021
1860099657,42cyclictest0-21swapper/005:56:010
18600996521,16cyclictest0-21swapper/009:36:000
1860099642,47cyclictest13-21rcuc/005:00:500
1860099642,41cyclictest25923-21grep09:01:070
18600996422,20cyclictest0-21swapper/006:41:000
1860099633,16cyclictest7750irq/56-dwc_otg05:36:020
18600996246,6cyclictest7750irq/56-dwc_otg08:36:180
18600996236,7cyclictest7850irq/56-dwc_otg_05:06:180
1860099622,44cyclictest9662-21grep09:21:040
18600996213,5cyclictest0-21swapper/006:56:020
18600996143,7cyclictest7850irq/56-dwc_otg_09:50:500
1860099613,45cyclictest13725-21taskset09:26:020
18600996132,5cyclictest7950irq/56-dwc_otg_07:26:030
18602996025,17cyclictest12488-21ssh08:05:592
18602996025,10cyclictest29577-21apt-get05:01:002
18601996028,15cyclictest1980-21apt-get09:50:561
1860099602,44cyclictest20459-21awk08:15:490
18600996015,27cyclictest0-21swapper/005:11:010
18601995935,8cyclictest7958-21apt-get05:31:001
18601995917,22cyclictest1639-21ssh07:13:261
1860099598,24cyclictest0-21swapper/008:01:030
18602995823,13cyclictest22839-21ssh07:38:402
18602995819,12cyclictest917-21snmpd06:51:102
18601995820,16cyclictest29611-21aten_rbpower_en05:01:031
18600995817,10cyclictest0-21swapper/007:36:000
1860099581,50cyclictest0-21swapper/008:10:490
1860099581,36cyclictest7778-21latency_hist05:30:500
18600995812,4cyclictest0-21swapper/006:51:030
18602995728,11cyclictest2188-21sshd05:14:322
18602995726,15cyclictest18316-21rm08:11:562
18602995725,20cyclictest24167-21ssh08:58:562
18601995718,24cyclictest31630-21ssh07:49:411
18600995737,12cyclictest0-21swapper/009:32:390
18600995726,15cyclictest24736-21grep04:46:120
141272570,3sleep121-21rcuc/107:27:521
18602995624,20cyclictest27064-21ssh09:01:422
18602995619,23cyclictest17273-21ssh09:30:252
18602995618,23cyclictest26975-21ssh08:22:432
1860199566,12cyclictest7950irq/56-dwc_otg_06:31:021
18601995616,24cyclictest7750irq/56-dwc_otg06:51:131
18601995615,25cyclictest28441-21latency06:26:091
18601995615,21cyclictest24235-21ssh08:20:151
18601995615,12cyclictest9830-21/usr/sbin/munin09:21:061
18601995614,11cyclictest18616-21/usr/sbin/munin04:31:171
18600995632,13cyclictest10222-21unixbench-2d08:41:170
1860099562,38cyclictest0-21swapper/004:51:050
1860099562,37cyclictest3350-21unixbench_singl09:51:210
18600995615,6cyclictest0-21swapper/007:01:010
18600995615,6cyclictest0-21swapper/007:01:010
1860099561,48cyclictest0-21swapper/006:39:500
1860099561,46cyclictest0-21swapper/009:56:190
1860099561,44cyclictest0-21swapper/009:16:050
1860099561,44cyclictest0-21swapper/007:57:320
18600995610,25cyclictest0-21swapper/005:41:130
18600995610,25cyclictest0-21swapper/005:41:130
234812550,2sleep10-21swapper/107:39:511
18602995530,16cyclictest4132-21ntp_states07:16:122
18602995518,24cyclictest7950irq/56-dwc_otg_09:40:242
18601995515,24cyclictest3279-21ssh09:12:271
1860099552,38cyclictest0-21swapper/005:46:110
1860099551,40cyclictest22154-21ntp_kernel_err08:56:110
18602995423,16cyclictest6312-21ssh08:36:292
18602995419,23cyclictest9351-21rm07:22:012
18602995419,23cyclictest9351-21rm07:22:012
1860199548,10cyclictest7950irq/56-dwc_otg_08:31:021
18601995421,23cyclictest18320-21ssh08:11:571
18601995414,25cyclictest26735-21ssh07:05:281
18601995414,25cyclictest26735-21ssh07:05:281
1860299533,9cyclictest7850irq/56-dwc_otg_09:56:022
18602995326,19cyclictest3630-21ssh07:55:172
18602995326,13cyclictest31273-21ssh09:06:512
18602995321,14cyclictest26450-21ssh07:04:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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