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2026-09-03 - 20:45

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 Thu Sep 03, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129202630,1chrt0-21swapper/009:14:210
129202630,1chrt0-21swapper/009:14:210
189682620,3sleep30-21swapper/308:04:213
20722610,3sleep20-21swapper/211:39:192
20722610,3sleep20-21swapper/211:39:192
231792570,3sleep30-21swapper/312:34:283
231792570,3sleep30-21swapper/312:34:283
256332540,2sleep20-21swapper/212:39:332
256332540,2sleep20-21swapper/212:39:332
206292520,2chrt20627-21bingrep09:34:270
206292520,2chrt20627-21bingrep09:34:270
78362510,2sleep30-21swapper/311:54:243
78362510,2sleep30-21swapper/311:54:243
100452500,1sleep10-21swapper/107:39:271
100452500,1sleep10-21swapper/107:39:271
244122480,2sleep129-21ksoftirqd/112:39:201
244122480,2sleep129-21ksoftirqd/112:39:201
132532460,3sleep10-21swapper/107:49:201
132532460,3sleep10-21swapper/107:49:201
93682450,3sleep30-21swapper/310:29:293
104422440,3sleep30-21swapper/309:09:093
104422440,3sleep30-21swapper/309:09:093
139302430,2chrt13932-21fschecks_count10:44:191
105302430,3sleep30-21swapper/311:59:263
105302430,3sleep30-21swapper/311:59:263
105302430,3sleep30-21swapper/311:59:263
74812410,2sleep20-21swapper/208:59:232
74812410,2sleep20-21swapper/208:59:232
227532400,4sleep022756-21gltestperf08:14:190
32556993728,7cyclictest6378-21netstat11:49:230
32556993728,7cyclictest6378-21netstat11:49:230
32564993528,5cyclictest3561-21kernelversion08:49:211
32564993528,5cyclictest3561-21kernelversion08:49:211
32564993527,6cyclictest11084-21sendmail12:04:071
32564993527,6cyclictest11084-21sendmail12:04:071
32564993527,6cyclictest11084-21sendmail12:04:071
99222340,2sleep00-21swapper/011:59:200
99222340,2sleep00-21swapper/011:59:200
99222340,2sleep00-21swapper/011:59:200
66042340,2sleep20-21swapper/208:59:072
66042340,2sleep20-21swapper/208:59:072
42622330,2sleep10-21swapper/111:44:211
42622330,2sleep10-21swapper/111:44:211
32556993326,5cyclictest550-21cron10:04:180
230482330,3chrt0-21swapper/212:34:272
230482330,3chrt0-21swapper/212:34:272
32564993228,3cyclictest700-21192.168.115.40-manager12:24:281
32564993226,4cyclictest32543-21cyclictest08:44:071
32564993226,4cyclictest32543-21cyclictest08:44:071
32556993226,4cyclictest24618-21cut08:19:200
32556993226,4cyclictest24618-21cut08:19:200
32556993226,4cyclictest1346-21avahi-daemon10:29:270
32556993225,5cyclictest10343-21gltestperf10:34:240
76112310,2sleep17612-21ps08:59:271
76112310,2sleep17612-21ps08:59:271
3256499317,4cyclictest281ktimers/111:36:441
3256499317,4cyclictest281ktimers/111:36:441
32556993125,4cyclictest13865-21head12:09:240
32556993121,7cyclictest6519-21fschecks_time10:24:200
299932310,2sleep130153-21/usr/sbin/munin08:34:191
32564993024,4cyclictest749-21runrttasks12:29:201
32564993024,4cyclictest749-21runrttasks12:29:201
32564993023,5cyclictest7037-21sshd11:50:321
32564993023,5cyclictest7037-21sshd11:50:321
32564993022,6cyclictest1369-21fschecks_count08:44:201
32564993021,7cyclictest7680-21fschecks_count11:54:231
32564993021,7cyclictest7680-21fschecks_count11:54:231
32564993021,6cyclictest26285-21fschecks_count08:24:201
32564993021,6cyclictest26285-21fschecks_count08:24:201
32564993020,7cyclictest25188-21fschecks_time11:14:191
32564993020,7cyclictest25188-21fschecks_time11:14:191
32556993024,4cyclictest32543-21cyclictest09:39:170
32556993024,4cyclictest32543-21cyclictest09:39:170
32556993022,5cyclictest4928-21/usr/sbin/munin08:54:270
32556993022,5cyclictest4928-21/usr/sbin/munin08:54:270
32556993021,7cyclictest25926-21head09:49:190
260902300,2chrt26092-21latency_hist08:24:131
260902300,2chrt26092-21latency_hist08:24:131
3256499296,4cyclictest281ktimers/111:04:331
3256499296,4cyclictest281ktimers/111:04:331
32564992923,4cyclictest749-21runrttasks09:09:331
32564992923,4cyclictest749-21runrttasks09:09:331
32564992923,3cyclictest0-21swapper/109:24:291
32564992923,3cyclictest0-21swapper/109:24:291
32564992921,6cyclictest2776-21gltestperf10:14:251
32564992921,6cyclictest2776-21gltestperf10:14:251
32564992921,6cyclictest11177-21/usr/sbin/munin07:44:251
32564992920,7cyclictest18624-21latency_hist08:04:131
32564992920,7cyclictest18624-21latency_hist08:04:131
32556992923,5cyclictest17655-21sendmail_mailqu07:59:250
32556992923,5cyclictest17655-21sendmail_mailqu07:59:250
32556992923,4cyclictest14678-21systemd-journal08:49:330
32556992923,4cyclictest14678-21systemd-journal08:49:330
32556992922,5cyclictest5406-21sshd11:48:320
32556992922,5cyclictest5406-21sshd11:48:320
182222290,3chrt0-21swapper/110:54:241
182222290,3chrt0-21swapper/110:54:241
130152290,2sleep20-21swapper/207:49:122
32564992824,3cyclictest2399-21kernelversion11:39:221
32564992824,3cyclictest2399-21kernelversion11:39:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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