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2025-12-25 - 21:52

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 Dec 25, 2025 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75052950,3chrt0-21swapper/308:50:283
294992860,3sleep10-21swapper/109:50:241
294992860,3sleep10-21swapper/109:50:241
9672830,2sleep0970-21proc_pri11:25:310
211212790,3sleep121122-21latency_hist10:55:131
211212790,3sleep121122-21latency_hist10:55:131
327532620,1chrt0-21swapper/111:25:241
107312620,3sleep30-21swapper/310:25:283
71682590,2sleep00-21swapper/010:15:330
71682590,2sleep00-21swapper/010:15:330
48992570,3sleep30-21swapper/308:45:143
48992570,3sleep30-21swapper/308:45:143
274972560,7sleep1281ktimers/108:15:371
274972560,7sleep1281ktimers/108:15:371
141832520,3sleep30-21swapper/310:35:253
141832520,3sleep30-21swapper/310:35:253
141832520,3sleep30-21swapper/310:35:253
101872490,3sleep30-21swapper/311:50:313
57232480,3sleep20-21swapper/208:45:292
57232480,3sleep20-21swapper/208:45:292
22422480,3sleep20-21swapper/208:35:322
22422480,3sleep20-21swapper/208:35:322
22422480,3sleep20-21swapper/208:35:322
188522480,3chrt0-21swapper/312:15:233
188522480,3chrt0-21swapper/312:15:233
188522480,3chrt0-21swapper/312:15:233
126452480,3sleep30-21swapper/310:30:303
126452480,3sleep30-21swapper/310:30:303
212512450,2sleep1271rcuc/109:25:361
212512450,2sleep1271rcuc/109:25:361
301062440,2sleep30-21swapper/309:50:303
301062440,2sleep30-21swapper/309:50:303
131852430,2sleep30-21swapper/312:00:203
131852430,2sleep30-21swapper/312:00:203
254162390,6sleep125421-21gltestperf11:05:261
14272390,3sleep30-21swapper/310:00:313
14272390,3sleep30-21swapper/310:00:313
119242390,2sleep10-21swapper/107:35:281
119242390,2sleep10-21swapper/107:35:281
214982360,3sleep20-21swapper/212:20:332
214982360,3sleep20-21swapper/212:20:332
288982350,4sleep30-21swapper/311:15:253
288982350,4sleep30-21swapper/311:15:253
2095993530,3cyclictest6273-21unixbench_multi08:45:361
2095993530,3cyclictest6273-21unixbench_multi08:45:361
113452350,2sleep20-21swapper/209:00:282
113452350,2sleep20-21swapper/209:00:282
238872340,1sleep023913-21/usr/sbin/munin09:35:250
238872340,1sleep023913-21/usr/sbin/munin09:35:250
2095993428,5cyclictest12081-21netstat11:55:301
2095993428,5cyclictest12081-21netstat11:55:301
2092993428,4cyclictest22879-21switchtime09:30:360
2092993428,4cyclictest22879-21switchtime09:30:360
2095993226,4cyclictest572-21cups-browsed08:25:331
2095993226,4cyclictest572-21cups-browsed08:25:331
2095993225,5cyclictest18392-21sshd07:53:321
2095993225,5cyclictest18392-21sshd07:53:321
2092993225,5cyclictest13603-21timerandwakeup09:05:340
2092993225,5cyclictest13603-21timerandwakeup09:05:340
2092993225,5cyclictest13603-21timerandwakeup09:05:340
2092993225,4cyclictest5244-21ntp_offset10:10:320
151292320,2sleep015154-21forks07:45:250
2095993127,3cyclictest2075-21cyclictest08:05:321
2092993127,3cyclictest18354-21fschecks_count09:20:250
2092993127,3cyclictest18354-21fschecks_count09:20:250
303272300,3sleep20-21swapper/209:50:332
303272300,3sleep20-21swapper/209:50:332
2095993025,3cyclictest5332-21kworker/u9:0-xprtiod12:10:131
2095993025,3cyclictest5332-21kworker/u9:0-xprtiod12:10:131
2095993025,2cyclictest0-21swapper/109:10:321
2095993023,5cyclictest7662-21sshd08:50:311
2095993023,5cyclictest21398-21sshd12:20:301
2095993023,5cyclictest21398-21sshd12:20:301
2092993023,5cyclictest0-21swapper/011:40:210
2092993023,5cyclictest0-21swapper/011:40:210
28602290,1sleep02985-21sensors_temp11:30:350
28602290,1sleep02985-21sensors_temp11:30:350
2095992925,3cyclictest31744-21kernelversion09:55:271
2095992925,3cyclictest31744-21kernelversion09:55:271
2095992925,3cyclictest31744-21kernelversion09:55:271
2095992923,5cyclictest8362-21netstat11:45:311
2095992923,5cyclictest8362-21netstat11:45:311
2095992923,5cyclictest14340-21kernelversion10:35:271
2095992923,5cyclictest14340-21kernelversion10:35:271
2095992923,5cyclictest14340-21kernelversion10:35:271
2095992923,5cyclictest13570-21threads09:05:341
2095992923,5cyclictest13570-21threads09:05:341
2095992923,5cyclictest13570-21threads09:05:341
2095992923,4cyclictest142-21systemd-journal07:31:321
2095992923,4cyclictest142-21systemd-journal07:31:321
2092992923,4cyclictest3509-21sendmail_mailqu10:05:350
2092992923,4cyclictest3509-21sendmail_mailqu10:05:350
2092992923,4cyclictest32129-21gltestperf08:30:250
2092992923,4cyclictest32129-21gltestperf08:30:250
2092992923,4cyclictest17309-21gltestperf12:10:260
2092992923,4cyclictest17309-21gltestperf12:10:260
2092992922,5cyclictest30652-21latency_hist11:20:230
2092992922,5cyclictest30652-21latency_hist11:20:230
2092992922,5cyclictest0-21swapper/008:40:350
2092992922,5cyclictest0-21swapper/008:40:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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