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2026-09-20 - 03:54

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 Sun Sep 20, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2372621150,2sleep00-21swapper/021:04:400
2372621150,2sleep00-21swapper/021:04:400
41872920,3sleep014773-21cyclictest23:04:440
45872880,2sleep20-21swapper/221:39:442
45872880,2sleep20-21swapper/221:39:442
20372810,2sleep02035-21ntpq22:59:420
20372810,2sleep02035-21ntpq22:59:420
149382800,3sleep30-21swapper/323:34:383
149382800,3sleep30-21swapper/323:34:383
157482610,3sleep014773-21cyclictest20:44:340
157482610,3sleep014773-21cyclictest20:44:340
294352590,3sleep30-21swapper/321:19:443
294352590,3sleep30-21swapper/321:19:443
206052590,3chrt0-21swapper/023:49:380
247232580,3chrt0-21swapper/319:39:453
247232580,3chrt0-21swapper/319:39:453
263612560,2chrt0-21swapper/322:39:343
263612560,2chrt0-21swapper/322:39:343
56672510,2sleep20-21swapper/221:44:342
274742510,2chrt27473-21sort00:09:251
14774994641,3cyclictest0-21swapper/000:04:260
14774994641,3cyclictest0-21swapper/000:04:260
279922420,3sleep00-21swapper/021:14:450
279922420,3sleep00-21swapper/021:14:450
1477499391,31cyclictest25728-21/usr/sbin/munin00:04:370
1478699372,29cyclictest25635-21taskset00:04:293
1478699372,29cyclictest25635-21taskset00:04:293
14774993729,5cyclictest0-21swapper/019:54:530
59072360,3sleep05909-21fschecks_time21:44:360
302202360,3sleep30-21swapper/322:49:353
198882360,5sleep30-21swapper/323:49:223
198882360,5sleep30-21swapper/323:49:223
14774993629,5cyclictest5409-21sendmail21:44:220
14774993629,5cyclictest5409-21sendmail21:44:220
14774993627,7cyclictest9174-21latency_hist21:54:220
14774993627,7cyclictest9174-21latency_hist21:54:220
82592350,3sleep20-21swapper/221:49:412
82592350,3sleep20-21swapper/221:49:412
307912350,3chrt0-21swapper/222:49:432
199102350,3sleep30-21swapper/322:19:453
199102350,3sleep30-21swapper/322:19:453
14775993529,3cyclictest0-21swapper/122:24:221
14775993529,3cyclictest0-21swapper/122:24:221
14775993528,5cyclictest2305-21threads22:59:451
14775993528,5cyclictest2305-21threads22:59:451
14775993526,7cyclictest6994-21processes20:19:421
14775993526,7cyclictest6994-21processes20:19:421
14774993529,4cyclictest21458-21fschecks_time20:59:360
14774993529,4cyclictest21458-21fschecks_time20:59:360
265762340,2sleep126779-21unixbench_singl19:44:461
1477999342,23cyclictest27018-21chrt00:04:522
1477499347,10cyclictest11058-21gltestperf23:24:370
1477499346,11cyclictest11746-21irqstats21:59:370
1477499346,11cyclictest11746-21irqstats21:59:370
1477499346,11cyclictest11746-21irqstats21:59:370
14774993426,5cyclictest700-21192.168.115.40-manager20:27:390
14774993324,7cyclictest769-21fschecks_time20:04:350
14775993224,6cyclictest5783-21fschecks_count21:44:351
14775993223,7cyclictest28940-21processes22:44:431
14774993222,7cyclictest700-21192.168.115.40-manager21:25:470
236782310,4sleep023680-21ls23:59:230
14775993123,6cyclictest2220-21idleruntime-cro20:09:221
14775993122,6cyclictest8653-21latency_hist23:19:261
1477499314,12cyclictest24165-21grep19:39:380
1477499314,12cyclictest24165-21grep19:39:380
14774993125,5cyclictest17965-21kernelversion20:49:380
14774993125,5cyclictest17965-21kernelversion20:49:380
14774993125,4cyclictest14773-21cyclictest23:19:410
14774993125,4cyclictest14773-21cyclictest23:19:410
14774993116,13cyclictest700-21192.168.115.40-manager00:17:150
14775993025,4cyclictest517-21latency_hist00:24:221
14775993025,4cyclictest517-21latency_hist00:24:221
14775993025,3cyclictest32213-21gltestperf22:54:371
14775993023,5cyclictest30889-21cron19:59:221
14775993023,5cyclictest19710-21sshd23:47:401
14775993023,5cyclictest19710-21sshd23:47:401
14775993023,5cyclictest13093-21latency23:29:381
14775993023,5cyclictest13093-21latency23:29:381
14775993022,6cyclictest9123-21threads20:24:471
14775993022,6cyclictest24807-21latency_hist21:09:251
14775993022,6cyclictest24807-21latency_hist21:09:251
14774993024,5cyclictest31627-21cron22:54:220
14774993022,5cyclictest700-21192.168.115.40-manager19:36:410
14774993022,5cyclictest700-21192.168.115.40-manager19:36:410
35532290,4sleep20-21swapper/200:29:452
14775992923,5cyclictest10140-21ntp_offset21:54:421
14775992923,4cyclictest29034-21gltestperf21:19:371
14775992923,4cyclictest29034-21gltestperf21:19:371
14775992922,5cyclictest5017-21ntp_kernel_pll_20:14:401
14775992922,5cyclictest5017-21ntp_kernel_pll_20:14:401
14775992920,7cyclictest3514-21gltestperf23:04:361
14775992920,7cyclictest16999-21needreboot23:39:391
14775992920,7cyclictest16999-21needreboot23:39:391
14775992920,7cyclictest16999-21needreboot23:39:391
14775992917,2cyclictest181rcu_preempt19:44:241
14775992917,2cyclictest181rcu_preempt19:44:241
1477499295,4cyclictest171ktimers/022:39:270
1477499295,4cyclictest171ktimers/022:39:270
14774992924,3cyclictest0-21swapper/020:24:220
14774992924,3cyclictest0-21swapper/020:24:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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