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2026-08-16 - 12:45

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 Sun Aug 16, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2334321010,3sleep10-21swapper/123:29:141
2334321010,3sleep10-21swapper/123:29:141
13602870,3chrt0-21swapper/322:33:573
131242860,2sleep30-21swapper/300:29:103
131242860,2sleep30-21swapper/300:29:103
237992830,3chrt23803-21timerwakeupswit22:04:161
237992830,3chrt23803-21timerwakeupswit22:04:161
262622810,1sleep3431rcuc/323:39:053
262622810,1sleep3431rcuc/323:39:053
51082780,3sleep30-21swapper/319:49:073
325142770,3sleep20-21swapper/219:34:142
325142770,3sleep20-21swapper/219:34:142
318572750,3chrt0-21swapper/122:28:521
282512730,3sleep30-21swapper/323:44:083
282512730,3sleep30-21swapper/323:44:083
24582670,3sleep20-21swapper/222:34:122
24582670,3sleep20-21swapper/222:34:122
37212660,4chrt16-21ksoftirqd/000:04:150
114092610,3chrt0-21swapper/222:59:082
114092610,3chrt0-21swapper/222:59:082
202392590,4chrt0-21swapper/323:24:023
202392590,4chrt0-21swapper/323:24:023
159332570,4chrt15938-21cpu00:39:011
159332570,4chrt15938-21cpu00:39:011
24078995650,3cyclictest0-21swapper/100:04:071
261032540,4chrt0-21swapper/223:39:042
261032540,4chrt0-21swapper/223:39:042
41092530,2sleep30-21swapper/322:39:113
41092530,2sleep30-21swapper/322:39:113
73902510,3chrt0-21swapper/322:49:043
73902510,3chrt0-21swapper/322:49:043
52002460,2chrt0-21swapper/300:09:083
99232450,2sleep2351rcuc/221:29:032
265722450,3chrt0-21swapper/322:14:033
33462430,2sleep00-21swapper/019:44:100
244432420,3sleep20-21swapper/220:39:152
244432420,3sleep20-21swapper/220:39:152
24076994230,7cyclictest1346-21avahi-daemon00:03:530
24076994230,7cyclictest1346-21avahi-daemon00:03:530
24076994230,7cyclictest1346-21avahi-daemon00:03:530
313152410,3sleep20-21swapper/220:59:042
313152410,3sleep20-21swapper/220:59:042
24078993931,6cyclictest25586-21cron23:38:501
110432380,3sleep20-21swapper/220:04:132
79582360,2chrt7959-21sshd19:58:291
319252360,2sleep10-21swapper/120:59:121
319252360,2sleep10-21swapper/120:59:121
24078993629,5cyclictest21628-21cut20:34:031
24076993627,7cyclictest25778-21needreboot20:44:070
24076993627,7cyclictest25778-21needreboot20:44:070
225422360,2sleep30-21swapper/322:03:543
225422360,2sleep30-21swapper/322:03:543
118282360,2sleep00-21swapper/022:59:150
118282360,2sleep00-21swapper/022:59:150
160852350,11sleep1271rcuc/120:19:041
160852350,11sleep1271rcuc/120:19:041
12952350,2sleep01319-21latency_hist22:33:550
43602340,3sleep30-21swapper/321:14:053
36942340,2sleep10-21swapper/122:39:061
36942340,2sleep10-21swapper/122:39:061
2408099341,26cyclictest2750-21chrt00:04:023
195822340,3sleep10-21swapper/121:54:071
170372340,3sleep30-21swapper/320:19:353
170372340,3sleep30-21swapper/320:19:353
121282340,2sleep012162-21ntp_states21:34:090
260612330,3chrt0-21swapper/222:12:292
260612330,3chrt0-21swapper/222:12:292
24078993326,5cyclictest12911-21cut23:04:001
24078993225,5cyclictest5789-21sshd19:49:301
24076993224,6cyclictest3814-21kernelversion22:39:070
24076993224,6cyclictest3814-21kernelversion22:39:070
100792320,3sleep20-21swapper/220:03:582
294862310,1sleep1251irq_work/120:54:051
24078993126,4cyclictest25597-21kernelversion20:44:041
24078993126,4cyclictest25597-21kernelversion20:44:041
24078993125,4cyclictest12216-21fschecks_time20:09:021
24078993125,4cyclictest12216-21fschecks_time20:09:021
24078993122,7cyclictest13893-21latency_hist00:33:521
24078993122,7cyclictest13893-21latency_hist00:33:521
220362310,2sleep022068-21cat23:28:580
24078993023,5cyclictest2375-21wc19:43:501
24078993023,5cyclictest2375-21wc19:43:501
24078993023,5cyclictest2375-21wc19:43:501
24078993023,5cyclictest2201-21fschecks_count21:09:021
24078993021,7cyclictest4125-21cut21:14:031
24078993021,7cyclictest28496-21cut22:19:031
24078993021,7cyclictest28496-21cut22:19:031
24076993024,5cyclictest28964-21fschecks_count20:54:010
24076993023,5cyclictest6176-21switchtime22:44:110
24076993023,5cyclictest6176-21switchtime22:44:110
24076993023,5cyclictest11635-21sshd00:25:120
24076993023,5cyclictest11635-21sshd00:25:120
161362300,2sleep116312-21sed21:44:111
2408099293,22cyclictest2614-21chrt00:03:533
2408099293,22cyclictest2614-21chrt00:03:533
24078992922,5cyclictest9293-21timerandwakeup19:59:131
24078992922,5cyclictest9293-21timerandwakeup19:59:131
24078992922,5cyclictest24074-21cyclictest23:41:431
24078992922,5cyclictest24074-21cyclictest23:41:431
24078992919,7cyclictest31273-21latency_hist23:53:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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