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2026-05-28 - 13:45

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 May 28, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2665621060,4sleep30-21swapper/321:18:003
2665621060,4sleep30-21swapper/321:18:003
223102970,2sleep20-21swapper/200:02:412
223102970,2sleep20-21swapper/200:02:412
191652920,3sleep30-21swapper/322:27:423
191652920,3sleep30-21swapper/322:27:423
142122910,3sleep20-21swapper/223:38:002
142122910,3sleep20-21swapper/223:38:002
318912820,5sleep20-21swapper/200:27:492
318912820,5sleep20-21swapper/200:27:492
260822650,2sleep10-21swapper/119:52:471
268902640,3sleep30-21swapper/319:52:573
143382640,3sleep30-21swapper/320:47:483
143382640,3sleep30-21swapper/320:47:483
256822630,3sleep20-21swapper/222:42:572
256822630,3sleep20-21swapper/222:42:572
199492630,2chrt19952-21fschecks_count21:02:501
199492630,2chrt19952-21fschecks_count21:02:501
33652610,1sleep00-21swapper/020:17:520
33652610,1sleep00-21swapper/020:17:520
33652610,1sleep00-21swapper/020:17:520
11486996156,3cyclictest0-21swapper/000:02:450
11486996156,3cyclictest0-21swapper/000:02:450
62292570,3sleep20-21swapper/223:17:542
62292570,3sleep20-21swapper/223:17:542
288212550,4sleep20-21swapper/222:52:502
288212550,4sleep20-21swapper/222:52:502
239182540,2chrt0-21swapper/122:37:571
239182540,2chrt0-21swapper/122:37:571
32822490,4sleep20-21swapper/200:37:512
32822490,4sleep20-21swapper/200:37:512
197382490,4sleep119741-21unixbench_singl19:33:011
197382490,4sleep119741-21unixbench_singl19:33:011
323882460,4chrt0-21swapper/323:02:483
323882460,4chrt0-21swapper/323:02:483
243602460,3sleep3431rcuc/321:12:573
243602460,3sleep3431rcuc/321:12:573
227372460,3sleep20-21swapper/219:42:512
227372460,3sleep20-21swapper/219:42:512
298772440,3chrt0-21swapper/321:27:523
298772440,3chrt0-21swapper/321:27:523
298772440,3chrt0-21swapper/321:27:523
234062430,3sleep20-21swapper/222:37:502
234062430,3sleep20-21swapper/222:37:502
304762420,4sleep10-21swapper/120:02:561
304762420,4sleep10-21swapper/120:02:561
129762400,4sleep20-21swapper/223:37:442
129762400,4sleep20-21swapper/223:37:442
223442390,3chrt0-21swapper/221:07:532
223442390,3chrt0-21swapper/221:07:532
223442390,3chrt0-21swapper/221:07:532
200662390,3sleep1271rcuc/122:27:561
200662390,3sleep1271rcuc/122:27:561
135342390,2chrt0-21swapper/219:17:552
11487993830,5cyclictest572-21cups-browsed19:42:371
11487993830,5cyclictest572-21cups-browsed19:42:371
1148799381,30cyclictest23123-21gzip00:02:551
1148799381,30cyclictest23123-21gzip00:02:551
30292370,3chrt0-21swapper/220:17:482
30292370,3chrt0-21swapper/220:17:482
30292370,3chrt0-21swapper/220:17:482
322912360,2sleep132411-21missed_timers00:27:531
322912360,2sleep132411-21missed_timers00:27:531
178692360,2sleep20-21swapper/219:28:002
178692360,2sleep20-21swapper/219:28:002
1148699361,30cyclictest14678-21systemd-journal00:02:510
1148699361,30cyclictest14678-21systemd-journal00:02:510
11487993528,5cyclictest27111-21sendmail21:22:371
11487993528,5cyclictest27111-21sendmail21:22:371
11487993528,5cyclictest10993-21latency_hist23:32:371
11487993528,5cyclictest10993-21latency_hist23:32:371
11487993528,5cyclictest10993-21latency_hist23:32:371
11487993526,7cyclictest13805-21netstat23:37:561
11487993526,7cyclictest13805-21netstat23:37:561
11486993526,7cyclictest9270-21netstat20:32:560
11486993526,7cyclictest9270-21netstat20:32:560
11487993425,7cyclictest2512-21netstat23:07:551
11487993425,7cyclictest2512-21netstat23:07:551
11486993426,6cyclictest28549-21netstat19:57:540
11486993426,6cyclictest28549-21netstat19:57:540
11486993324,7cyclictest6384-21fschecks_time21:52:490
11486993324,7cyclictest6384-21fschecks_time21:52:490
11486993324,7cyclictest27330-21unixbench-2d00:13:000
11486993324,7cyclictest27330-21unixbench-2d00:13:000
11487993226,4cyclictest1346-21avahi-daemon21:52:561
11487993226,4cyclictest1346-21avahi-daemon21:52:561
11487993225,5cyclictest550-21cron22:32:471
11487993225,5cyclictest550-21cron22:32:471
11487993224,6cyclictest5698-21fschecks_count23:17:491
11487993224,6cyclictest5698-21fschecks_count23:17:491
11487993222,8cyclictest12571-21fschecks_time20:42:501
11487993222,8cyclictest12571-21fschecks_time20:42:501
11486993225,5cyclictest595-21sshd20:08:330
11486993225,5cyclictest595-21sshd20:08:330
11486993223,7cyclictest7166-21kernelversion20:27:510
11486993223,7cyclictest7166-21kernelversion20:27:510
11486993223,7cyclictest7166-21kernelversion20:27:510
47972310,2chrt4800-21sed23:12:591
47972310,2chrt4800-21sed23:12:591
11487993124,4cyclictest1346-21avahi-daemon20:52:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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