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2026-09-28 - 01:48

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 Mon Sep 28, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120122910,3chrt0-21swapper/021:39:430
120122910,3chrt0-21swapper/021:39:430
117632870,2sleep111767-21missed_timers23:04:461
117632870,2sleep111767-21missed_timers23:04:461
324352840,3sleep20-21swapper/223:59:472
324352840,3sleep20-21swapper/223:59:472
324352840,3sleep20-21swapper/223:59:472
279202830,3chrt0-21swapper/222:19:532
279202830,3chrt0-21swapper/222:19:532
26402670,3sleep20-21swapper/219:49:302
37962640,2chrt3797-21cut22:44:430
142402610,3chrt0-21swapper/220:19:412
142402610,3chrt0-21swapper/220:19:412
10332610,2sleep11106-21strings21:09:461
84912580,3sleep10-21swapper/120:04:401
84912580,3sleep10-21swapper/120:04:401
178812580,3sleep20-21swapper/221:54:442
164492520,2sleep30-21swapper/320:24:443
297082510,3sleep20-21swapper/220:59:452
297082510,3sleep20-21swapper/220:59:452
152932500,2chrt15294-21unixbench_multi20:19:521
152932500,2chrt15294-21unixbench_multi20:19:521
204642480,2sleep120463-21sed21:59:541
204642480,2sleep120463-21sed21:59:541
52752470,3chrt0-21swapper/319:54:453
24832470,1sleep1975-40mandb00:05:121
24832470,1sleep1975-40mandb00:05:121
25232450,4sleep20-21swapper/222:39:512
25232450,4sleep20-21swapper/222:39:512
22677994540,3cyclictest0-21swapper/000:04:350
22677994540,3cyclictest0-21swapper/000:04:350
22677994540,3cyclictest0-21swapper/000:04:350
207812450,1sleep00-21swapper/023:29:420
2267799442,37cyclictest1920-21/usr/sbin/munin00:04:480
2267799442,37cyclictest1920-21/usr/sbin/munin00:04:480
4342430,3sleep00-21swapper/022:34:460
22678994218,22cyclictest1981-21switchtime19:44:511
22678994117,22cyclictest6789-21/usr/sbin/munin00:19:471
22678994117,22cyclictest6789-21/usr/sbin/munin00:19:471
2267899411,10cyclictest16448-21if_eth020:24:441
14162400,3sleep30-21swapper/319:44:453
22678993819,17cyclictest15979-21latency_hist00:44:291
22678993819,17cyclictest15979-21latency_hist00:44:291
2267899381,8cyclictest6986-21/usr/sbin/munin19:59:441
2267899381,8cyclictest6986-21/usr/sbin/munin19:59:441
2267899381,8cyclictest14632-21taskset23:13:581
2267899381,6cyclictest19911-21grep20:34:421
2267899381,5cyclictest3721-21netstat00:09:471
22678993810,26cyclictest975-40mandb00:04:381
22678993810,26cyclictest975-40mandb00:04:381
22678993810,26cyclictest975-40mandb00:04:381
2268199372,28cyclictest1034-21chrt00:04:343
2268199372,28cyclictest1034-21chrt00:04:343
2268199372,28cyclictest1034-21chrt00:04:343
2267899377,25cyclictest0-21swapper/121:52:051
22678993729,6cyclictest10559-21netstat21:34:481
22678993729,6cyclictest10559-21netstat21:34:481
2267899371,9cyclictest16965-21fschecks_time23:19:411
2267899371,9cyclictest16965-21fschecks_time23:19:411
2267899371,9cyclictest16965-21fschecks_time23:19:411
2267899371,8cyclictest15607-21netstat23:14:491
2267899371,8cyclictest15607-21netstat23:14:491
2267899361,9cyclictest22977-21missed_timers23:34:451
2267899361,9cyclictest22977-21missed_timers23:34:451
2267899361,9cyclictest19196-21latency23:24:441
2267899361,9cyclictest14049-21seq00:38:561
2267899361,8cyclictest749-21runrttasks00:32:571
2267899361,8cyclictest21808-21/usr/sbin/munin22:04:481
2267899361,8cyclictest21808-21/usr/sbin/munin22:04:481
2267899361,8cyclictest21699-21grep23:29:521
2267899361,7cyclictest6365-21fschecks_time21:24:431
2267899361,7cyclictest6365-21fschecks_time21:24:431
22678993616,18cyclictest0-21swapper/120:29:471
22678993615,19cyclictest0-21swapper/123:54:451
2267899361,11cyclictest24243-21/usr/sbin/munin23:39:511
2267899361,11cyclictest24243-21/usr/sbin/munin23:39:511
83752350,3sleep20-21swapper/200:23:472
83752350,3sleep20-21swapper/200:23:472
2267899356,7cyclictest14678-21systemd-journal00:15:461
2267899351,9cyclictest749-21runrttasks22:55:351
2267899351,9cyclictest749-21runrttasks22:55:351
2267899351,9cyclictest749-21runrttasks22:55:351
2267899351,9cyclictest27201-21kernelversion22:19:451
2267899351,9cyclictest27201-21kernelversion22:19:451
2267899351,9cyclictest25454-21ls22:14:441
2267899351,9cyclictest25454-21ls22:14:441
2267899351,9cyclictest2102-21gltestperf22:39:441
2267899351,9cyclictest2102-21gltestperf22:39:441
2267899351,9cyclictest10532-21fschecks_count20:09:421
2267899351,9cyclictest10532-21fschecks_count20:09:421
2267899351,8cyclictest749-21runrttasks20:50:461
2267899351,8cyclictest749-21runrttasks20:50:461
2267899351,8cyclictest7158-21latency_hist22:54:301
2267899351,8cyclictest7158-21latency_hist22:54:301
2267899351,8cyclictest24352-21/usr/sbin/munin20:44:491
2267899351,8cyclictest24352-21/usr/sbin/munin20:44:491
2267899351,8cyclictest13579-21/usr/sbin/munin21:44:491
2267899351,7cyclictest29429-21/usr/sbin/munin22:24:491
2267899351,12cyclictest24114-21grep22:09:521
2267899351,10cyclictest5292-21timerwakeupswit21:19:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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