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2025-12-14 - 18:57

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 Dec 14, 2025 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1575521030,2sleep215756-21/usr/sbin/munin07:18:102
130099910342,15cyclictest0-21swapper/008:25:080
239312780,6sleep01300999cyclictest10:38:160
327012770,2sleep10-21swapper/111:03:161
304152760,6sleep01300999cyclictest09:28:090
13009997511,17cyclictest0-21swapper/009:12:590
1300999706,25cyclictest0-21swapper/011:33:020
1300999706,25cyclictest0-21swapper/011:33:020
13009997056,6cyclictest101ktimersoftd/008:45:020
13012996932,15cyclictest5209-21/usr/sbin/munin08:18:143
13012996834,21cyclictest3124-21irqstats08:13:073
13009996813,9cyclictest0-21swapper/008:22:590
1301199675,3cyclictest7750irq/56-dwc_otg11:00:092
1300999677,41cyclictest0-21swapper/010:58:010
1300999677,41cyclictest0-21swapper/010:58:010
1300999675,34cyclictest0-21swapper/009:03:010
13012996530,19cyclictest30478-21grep12:28:033
13012996527,22cyclictest18811-21taskset08:55:493
13009996516,9cyclictest0-21swapper/007:33:010
13012996428,19cyclictest13540-21wc11:40:023
13009996344,6cyclictest20477-21grep11:58:290
1300999631,33cyclictest0-21swapper/009:18:160
13012996222,19cyclictest7950irq/56-dwc_otg_12:15:033
1300999626,54cyclictest0-21swapper/008:53:010
1300999621,32cyclictest26653-21ls10:48:010
14502610,1sleep20-21swapper/208:08:092
13012996133,13cyclictest15994-21entropy11:48:073
13012996131,17cyclictest30288-21/usr/sbin/munin09:28:073
13012996129,18cyclictest28206-21awk09:23:033
1301099612,5cyclictest0-21swapper/112:32:591
13009996113,34cyclictest0-21swapper/007:20:020
13009996035,12cyclictest28041-21cron12:20:020
13009996035,12cyclictest28041-21cron12:20:020
1300999602,36cyclictest0-21swapper/007:48:010
1300999602,36cyclictest0-21swapper/007:48:010
13012995933,7cyclictest3827-21ntp_states11:13:123
13012995928,20cyclictest9998-21munin-node10:02:583
13012995925,17cyclictest7950irq/56-dwc_otg_12:23:063
1301199594,7cyclictest0-21swapper/210:30:032
1301199592,4cyclictest0-21swapper/211:33:062
1301199592,4cyclictest0-21swapper/211:33:062
1300999599,30cyclictest3765-21unixbench_multi08:13:160
13012995834,8cyclictest20384-21apt-get10:30:093
13012995831,13cyclictest15879-21/usr/sbin/munin08:48:073
13012995831,13cyclictest15879-21/usr/sbin/munin08:48:073
13012995831,12cyclictest29598-21apt-get07:58:013
13012995830,13cyclictest424-21latency_hist08:05:033
1301199582,12cyclictest7950irq/56-dwc_otg_07:38:052
13010995811,22cyclictest0-21swapper/111:57:591
1300999584,27cyclictest0-21swapper/009:52:590
13009995820,20cyclictest0-21swapper/012:28:000
13012995722,18cyclictest7950irq/56-dwc_otg_09:58:023
1301199571,19cyclictest0-21swapper/210:33:022
13009995733,13cyclictest15316-21sh11:45:020
1300999571,37cyclictest17662-21aten_rbpower_po11:53:020
13012995629,16cyclictest1124-21snmpd09:06:353
13012995629,13cyclictest5520-21/usr/sbin/munin11:18:153
13012995620,10cyclictest7950irq/56-dwc_otg_07:38:023
13009995642,4cyclictest5227-21grep08:18:140
13009995628,6cyclictest7950irq/56-dwc_otg_09:00:020
1300999562,30cyclictest0-21swapper/007:13:040
1300999561,51cyclictest101ktimersoftd/010:08:150
50912550,2sleep10-21swapper/108:18:101
13012995528,11cyclictest29039-21taskset07:54:003
13012995525,11cyclictest25822-21uptime10:43:163
13012995522,10cyclictest7950irq/56-dwc_otg_09:15:033
13009995536,4cyclictest5529-21missed_timers11:18:150
1300999553,27cyclictest0-21swapper/011:38:000
13012995430,12cyclictest24171-21/usr/sbin/munin07:43:183
13012995430,12cyclictest24171-21/usr/sbin/munin07:43:183
13012995427,15cyclictest17852-21/usr/sbin/munin08:53:093
13012995427,11cyclictest18241-21/usr/sbin/munin11:53:103
13012995420,19cyclictest11614-21runrttasks10:05:403
13012995419,11cyclictest7950irq/56-dwc_otg_08:28:053
1300999546,28cyclictest9-21ksoftirqd/011:10:030
1300999544,47cyclictest9-21ksoftirqd/008:10:020
13009995424,5cyclictest25336-21grep07:43:160
13009995424,5cyclictest25336-21grep07:43:160
1300999542,30cyclictest4250-21grep11:13:160
1300999542,27cyclictest26245-21apt-config12:15:030
1300999542,26cyclictest0-21swapper/011:25:030
13009995421,15cyclictest17075-21/usr/sbin/munin07:23:030
13012995341,8cyclictest13253-21apt-get07:12:593
13012995327,12cyclictest27584-21ls09:20:023
13012995324,11cyclictest22439-21chrt12:04:123
13012995324,10cyclictest22829-21/usr/sbin/munin10:38:133
13012995322,12cyclictest27215-21chrt07:48:383
13012995322,12cyclictest27215-21chrt07:48:383
13012995322,10cyclictest14838-21taskset10:13:433
1301199537,43cyclictest20008-21timerwakeupswit08:58:162
1300999533,29cyclictest0-21swapper/012:23:060
13009995330,16cyclictest0-21swapper/009:10:030
1300999531,7cyclictest18997-21fschecks_time07:28:050
1300999531,28cyclictest10501-21grep08:33:080
13012995223,14cyclictest20641-21taskset09:01:113
13012995220,12cyclictest28040-21cron12:20:023
13012995220,12cyclictest28040-21cron12:20:023
1300999529,23cyclictest0-21swapper/010:05:030
1300999522,27cyclictest0-21swapper/012:38:100
1300999521,24cyclictest0-21swapper/008:47:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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