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2026-08-29 - 00:32

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 Fri Aug 28, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
289712810,3sleep00-21swapper/010:54:240
289712810,3sleep00-21swapper/010:54:240
64062800,3sleep00-21swapper/009:54:220
260172680,3sleep026021-21head09:19:250
260172680,3sleep026021-21head09:19:250
260172680,3sleep026021-21head09:19:250
135492570,2chrt0-21swapper/208:49:072
127132550,2sleep112715-21sshd10:13:291
127132550,2sleep112715-21sshd10:13:291
278012540,3chrt0-21swapper/010:54:040
278012540,3chrt0-21swapper/010:54:040
241602510,3sleep20-21swapper/207:49:182
110332490,1chrt0-21swapper/011:34:160
110332490,1chrt0-21swapper/011:34:160
84392480,3sleep08442-21latency_hist11:29:010
84392480,3sleep08442-21latency_hist11:29:010
213442480,3sleep30-21swapper/310:34:213
213442480,3sleep30-21swapper/310:34:213
28552430,3sleep20-21swapper/211:14:042
28552430,3sleep20-21swapper/211:14:042
303112390,3sleep30-21swapper/312:24:243
170382390,3sleep00-21swapper/011:49:190
10968993933,4cyclictest1346-21avahi-daemon11:04:011
10968993933,4cyclictest1346-21avahi-daemon11:04:011
10968993933,4cyclictest1346-21avahi-daemon11:04:011
39482370,2sleep03949-21sendmail08:24:010
39482370,2sleep03949-21sendmail08:24:010
10967993729,6cyclictest21501-21threads10:34:220
10967993729,6cyclictest21501-21threads10:34:220
163302350,2sleep30-21swapper/308:54:233
10967993526,7cyclictest550-21cron10:34:010
10967993526,7cyclictest550-21cron10:34:010
182112340,3sleep20-21swapper/207:34:142
182112340,3sleep20-21swapper/207:34:142
267752330,4chrt0-21swapper/012:14:240
267752330,4chrt0-21swapper/012:14:240
10968993225,5cyclictest3378-21latency_hist09:49:021
10968993225,5cyclictest3378-21latency_hist09:49:021
1096799327,3cyclictest171ktimers/008:56:590
261772300,3sleep30-21swapper/310:49:123
261772300,3sleep30-21swapper/310:49:123
10968993026,3cyclictest10964-21cyclictest12:29:231
10968993026,3cyclictest10964-21cyclictest12:29:231
10968993022,6cyclictest21709-21ls07:44:121
10968993021,7cyclictest29941-21needreboot12:24:191
10968993021,7cyclictest29763-21latency_hist10:59:081
10968993021,7cyclictest29763-21latency_hist10:59:081
1096799307,5cyclictest171ktimers/008:16:320
10967993026,2cyclictest0-21swapper/010:44:020
10967993026,2cyclictest0-21swapper/010:44:020
10967993024,5cyclictest8351-21threads09:59:230
10967993024,5cyclictest8351-21threads09:59:230
10967993024,4cyclictest572-21cups-browsed10:04:230
10967993024,4cyclictest572-21cups-browsed10:04:230
10967993024,4cyclictest31929-21fschecks_time11:04:130
10967993024,4cyclictest31929-21fschecks_time11:04:130
10967993022,6cyclictest22067-21cut12:04:140
10967993022,6cyclictest14989-21needreboot11:44:190
10967993022,6cyclictest14989-21needreboot11:44:190
1096799301,11cyclictest31322-21fschecks_count12:29:140
1096799301,11cyclictest31322-21fschecks_count12:29:140
290802290,3sleep20-21swapper/212:24:032
290802290,3sleep20-21swapper/212:24:032
290802290,3sleep20-21swapper/212:24:032
10968992923,4cyclictest10964-21cyclictest12:10:191
10968992923,4cyclictest10964-21cyclictest12:10:191
10968992922,6cyclictest22279-21kernelversion12:04:161
10968992922,5cyclictest26314-21sshd09:22:291
10968992922,5cyclictest26314-21sshd09:22:291
10968992922,5cyclictest26314-21sshd09:22:291
10968992921,6cyclictest3713-21sshd12:39:301
10968992921,6cyclictest3713-21sshd12:39:301
10968992921,6cyclictest3713-21sshd12:39:301
10968992921,6cyclictest29182-21latency_hist12:24:081
10968992921,6cyclictest29182-21latency_hist12:24:081
10968992921,6cyclictest29182-21latency_hist12:24:081
10967992924,3cyclictest32550-21gltestperf09:39:120
10967992924,3cyclictest32550-21gltestperf09:39:120
10967992922,5cyclictest4661-21kernelversion08:24:160
10967992922,5cyclictest31204-21fschecks_time08:09:150
10967992921,6cyclictest20917-21threads11:59:240
10967992921,6cyclictest20917-21threads11:59:240
10967992921,6cyclictest20917-21threads11:59:240
10967992921,6cyclictest20001-21fschecks_time07:39:150
10967992921,6cyclictest20001-21fschecks_time07:39:150
10967992912,12cyclictest700-21192.168.115.40-manager08:33:290
10968992823,3cyclictest21553-21sendmail12:04:011
10968992823,3cyclictest21553-21sendmail12:04:011
10968992823,3cyclictest21553-21sendmail12:04:011
10968992822,5cyclictest12546-21fschecks_count11:39:141
10968992822,5cyclictest12546-21fschecks_count11:39:141
10968992822,4cyclictest1346-21avahi-daemon11:24:211
10968992822,4cyclictest1346-21avahi-daemon11:24:211
10968992821,5cyclictest10990-21latency_hist10:09:051
10968992821,5cyclictest10990-21latency_hist10:09:051
10968992820,6cyclictest21336-21processes10:34:211
10968992820,6cyclictest21336-21processes10:34:211
10968992820,6cyclictest16368-21fschecks_count11:49:111
10967992822,5cyclictest18948-21latency_hist09:04:020
10967992822,5cyclictest18948-21latency_hist09:04:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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