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2025-12-02 - 15:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 rack4slot1s.osadl.org (updated Tue Dec 02, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2466721250,9sleep1281ktimers/111:09:101
2466721250,9sleep1281ktimers/111:09:101
2630221050,2sleep20-21swapper/209:49:042
608121040,3sleep30-21swapper/310:22:053
608121040,3sleep30-21swapper/310:22:053
26752980,3sleep3431rcuc/310:13:573
26752980,3sleep3431rcuc/310:13:573
130792980,3sleep3431rcuc/312:04:073
130792980,3sleep3431rcuc/312:04:073
88302850,3sleep18694-21/usr/sbin/munin09:04:001
88302850,3sleep18694-21/usr/sbin/munin09:04:001
139442820,3chrt0-21swapper/210:43:472
139442820,3chrt0-21swapper/210:43:472
161862800,3sleep10-21swapper/110:49:001
161862800,3sleep10-21swapper/110:49:001
228382790,3sleep10-21swapper/109:39:101
228382790,3sleep10-21swapper/109:39:101
220172780,2sleep30-21swapper/311:04:023
220172780,2sleep30-21swapper/311:04:023
206272760,3sleep30-21swapper/310:59:073
280862740,4chrt0-21swapper/311:19:053
149142730,2sleep30-21swapper/310:44:083
149142730,2sleep30-21swapper/310:44:083
149142730,2sleep30-21swapper/310:44:083
24262710,2chrt0-21swapper/308:44:133
24262710,2chrt0-21swapper/308:44:133
303092700,5sleep1281ktimers/109:59:081
303092700,5sleep1281ktimers/109:59:081
182022700,3sleep20-21swapper/208:03:482
182022700,3sleep20-21swapper/208:03:482
206352690,2chrt20630-21idleruntime08:09:040
206352690,2chrt20630-21idleruntime08:09:040
204502680,3sleep30-21swapper/309:34:013
204502680,3sleep30-21swapper/309:34:013
89892650,3chrt0-21swapper/209:04:012
89892650,3chrt0-21swapper/209:04:012
248542650,2chrt24823-21processes08:19:061
248542650,2chrt24823-21processes08:19:061
178022630,4sleep30-21swapper/312:18:593
178022630,4sleep30-21swapper/312:18:593
197412620,3sleep10-21swapper/112:23:551
197412620,3sleep10-21swapper/112:23:551
23032610,3sleep20-21swapper/208:44:122
23032610,3sleep20-21swapper/208:44:122
112402570,4sleep20-21swapper/209:09:042
112402570,4sleep20-21swapper/209:09:042
65872560,1sleep10-21swapper/110:24:001
65872560,1sleep10-21swapper/110:24:001
187322560,2sleep20-21swapper/212:19:102
187322560,2sleep20-21swapper/212:19:102
50492540,3sleep20-21swapper/208:54:002
50492540,3sleep20-21swapper/208:54:002
105642530,3chrt0-21swapper/309:08:533
241822510,3sleep20-21swapper/209:44:012
241822510,3sleep20-21swapper/209:44:012
31945994924,18cyclictest171ktimers/009:03:570
31945994924,18cyclictest171ktimers/009:03:570
220642490,3sleep20-21swapper/208:13:522
220642490,3sleep20-21swapper/208:13:522
4422470,3sleep10-21swapper/108:39:121
4422470,3sleep10-21swapper/108:39:121
31950994731,9cyclictest63182sleep311:48:573
31950994731,9cyclictest63182sleep311:48:573
114892470,3sleep20-21swapper/210:34:102
114892470,3sleep20-21swapper/210:34:102
31949994613,18cyclictest0-21swapper/211:48:572
31949994613,18cyclictest0-21swapper/211:48:572
25712460,3chrt0-21swapper/110:13:511
25712460,3chrt0-21swapper/110:13:511
25712460,3chrt0-21swapper/110:13:511
52012450,3sleep30-21swapper/311:44:103
52012450,3sleep30-21swapper/311:44:103
300822450,2sleep130076-21ntp_states11:24:061
300822450,2sleep130076-21ntp_states11:24:061
202162450,3sleep20-21swapper/210:59:022
31945994422,16cyclictest171ktimers/012:33:580
31945994422,16cyclictest171ktimers/012:33:580
31945994422,16cyclictest171ktimers/012:33:580
31945994331,9cyclictest19406-21latency_hist12:23:450
31945994331,9cyclictest19406-21latency_hist12:23:450
316992430,3sleep20-21swapper/211:29:012
316992430,3sleep20-21swapper/211:29:012
202112430,6sleep120208-21if_eth012:24:031
14842430,3sleep11485-21gltestperf08:44:021
14842430,3sleep11485-21gltestperf08:44:021
31949994120,11cyclictest235732sleep212:33:542
31949994120,11cyclictest235732sleep212:33:542
310072410,4sleep131012-21sed08:34:101
103082410,2sleep20-21swapper/211:59:002
103082410,2sleep20-21swapper/211:59:002
31947994036,2cyclictest0-21swapper/112:33:541
31947994036,2cyclictest0-21swapper/112:33:541
3194799401,37cyclictest10597-21taskset09:08:581
3194799401,37cyclictest10597-21taskset09:08:581
31945993930,7cyclictest25308-21latency_hist11:13:450
31945993930,7cyclictest25308-21latency_hist11:13:450
3194599392,31cyclictest23589-21taskset12:33:540
3194599392,31cyclictest23589-21taskset12:33:540
108482390,3sleep20-21swapper/207:43:592
108482390,3sleep20-21swapper/207:43:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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