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2026-08-25 - 06:06

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 Aug 25, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2889121100,1chrt28896-21sed21:54:201
1508021070,2chrt15077-21find22:44:201
302452990,3sleep20-21swapper/223:24:212
302452990,3sleep20-21swapper/223:24:212
296472970,2sleep10-21swapper/121:59:101
296472970,2sleep10-21swapper/121:59:101
300122890,3sleep20-21swapper/220:34:012
300122890,3sleep20-21swapper/220:34:012
106972850,3chrt10698-21sh00:08:591
103512830,3sleep30-21swapper/300:04:343
214402770,2sleep30-21swapper/323:04:043
214402770,2sleep30-21swapper/323:04:043
248782760,3sleep30-21swapper/321:44:213
310882700,2chrt0-21swapper/123:29:111
224192650,2sleep30-21swapper/323:04:203
194732560,1sleep10-21swapper/122:59:001
579995545,5cyclictest0-21swapper/000:04:010
579995545,5cyclictest0-21swapper/000:04:010
579995545,5cyclictest0-21swapper/000:04:010
238062550,3chrt0-21swapper/321:44:003
238062550,3chrt0-21swapper/321:44:003
238062550,3chrt0-21swapper/321:44:003
241062510,3chrt0-21swapper/123:09:171
241062510,3chrt0-21swapper/123:09:171
48082490,3chrt0-21swapper/223:44:192
48082490,3chrt0-21swapper/223:44:192
271112490,3sleep10-21swapper/121:49:251
271112490,3sleep10-21swapper/121:49:251
579994740,4cyclictest0-21swapper/000:04:130
227722470,3sleep20-21swapper/220:14:122
207852430,3chrt0-21swapper/220:09:042
132552430,3sleep20-21swapper/200:14:142
159672420,2sleep30-21swapper/300:24:133
159672420,2sleep30-21swapper/300:24:133
139062420,2sleep20-21swapper/219:49:142
278692400,4chrt0-21swapper/321:54:103
582993930,7cyclictest18801-21latency_hist00:33:581
582993930,7cyclictest18801-21latency_hist00:33:581
275402390,3sleep20-21swapper/221:54:002
275402390,3sleep20-21swapper/221:54:002
120092380,3sleep10-21swapper/122:39:021
120092380,3sleep10-21swapper/122:39:021
582993731,3cyclictest0-21swapper/121:23:581
582993731,3cyclictest0-21swapper/121:23:581
582993731,3cyclictest0-21swapper/121:23:581
579993728,7cyclictest16095-21processes00:24:150
579993728,7cyclictest16095-21processes00:24:150
43982350,4sleep30-21swapper/322:18:583
206182350,3sleep10-21swapper/120:08:591
181972350,3sleep30-21swapper/322:54:113
58499342,25cyclictest8900-21chrt00:04:023
58499342,25cyclictest8900-21chrt00:04:023
58499342,25cyclictest8900-21chrt00:04:023
582993429,3cyclictest90-1pr/ttyS000:14:031
582993425,7cyclictest8292-21threads00:01:121
582993425,7cyclictest8292-21threads00:01:121
582993425,7cyclictest8292-21threads00:01:121
271152340,3sleep30-21swapper/320:24:173
271152340,3sleep30-21swapper/320:24:173
178512340,2sleep20-21swapper/200:29:182
178512340,2sleep20-21swapper/200:29:182
582993326,5cyclictest20658-21cron00:38:581
582993326,5cyclictest20658-21cron00:38:581
582993124,5cyclictest13431-21fschecks_count19:49:111
582993123,6cyclictest550-21cron23:18:581
582993123,6cyclictest24694-21fschecks_count20:19:121
582993123,6cyclictest24694-21fschecks_count20:19:121
579993123,6cyclictest12451-21threads19:44:210
579993122,7cyclictest17327-21fschecks_count00:29:120
579993122,7cyclictest17327-21fschecks_count00:29:120
58399306,11cyclictest88852sleep200:04:022
58399306,11cyclictest88852sleep200:04:022
58399306,11cyclictest88852sleep200:04:022
582993025,4cyclictest545-21in:imuxsock22:43:581
582993025,4cyclictest545-21in:imuxsock22:43:581
579993025,3cyclictest4969-21runrttasks20:53:580
579993023,5cyclictest576-21cyclictest21:54:180
579993022,6cyclictest9023-21apache222:11:280
579993022,6cyclictest9023-21apache222:11:280
579993022,6cyclictest8337-21needreboot19:34:150
579993022,6cyclictest8337-21needreboot19:34:150
260002300,3sleep30-21swapper/323:14:173
194632300,2sleep30-21swapper/300:34:133
194632300,2sleep30-21swapper/300:34:133
582992924,3cyclictest27451-21gltestperf23:19:131
582992924,3cyclictest27451-21gltestperf23:19:131
582992923,4cyclictest1676-21fschecks_time20:44:111
579992923,4cyclictest729-21dbus-daemon00:43:580
579992923,4cyclictest729-21dbus-daemon00:43:580
579992923,4cyclictest729-21dbus-daemon00:43:580
579992923,4cyclictest545-21in:imuxsock22:08:580
579992923,4cyclictest545-21in:imuxsock22:08:580
579992922,4cyclictest0-21swapper/000:34:120
579992922,4cyclictest0-21swapper/000:34:120
579992921,6cyclictest32158-21cut20:39:110
582992823,4cyclictest1346-21avahi-daemon00:39:181
582992823,4cyclictest1346-21avahi-daemon00:39:181
582992823,4cyclictest1346-21avahi-daemon00:39:181
582992823,3cyclictest0-21swapper/122:28:581
582992822,5cyclictest21297-21kernelversion20:09:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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