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2026-08-08 - 06:27

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 Sat Aug 08, 2026 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
148752770,4sleep20-21swapper/221:33:582
200092630,3sleep00-21swapper/000:40:010
200092630,3sleep00-21swapper/000:40:010
200092630,3sleep00-21swapper/000:40:010
314762570,4sleep30-21swapper/322:18:583
148952560,3chrt0-21swapper/321:33:593
293582550,3sleep00-21swapper/020:46:410
293582550,3sleep00-21swapper/020:46:410
185882550,2chrt18590-21ls21:43:581
27061995338,11cyclictest0-21swapper/000:03:490
27061995338,11cyclictest0-21swapper/000:03:490
166022500,4sleep016604-21latency21:38:590
166022500,4sleep016604-21latency21:38:590
27061994938,8cyclictest6266-21ntpq00:04:030
53302480,3chrt0-21swapper/222:34:042
53302480,3chrt0-21swapper/222:34:042
27062994739,3cyclictest0-21swapper/100:04:031
30872460,2chrt0-21swapper/321:03:563
132682460,2sleep20-21swapper/221:29:042
222442440,1sleep00-21swapper/020:28:480
135632440,3sleep20-21swapper/220:03:582
194012430,2sleep019588-21gltestperf23:13:550
159262430,1sleep00-21swapper/020:09:060
110372430,3sleep30-21swapper/322:49:053
7972420,3sleep30-21swapper/323:49:073
7972420,3sleep30-21swapper/323:49:073
68522420,3sleep30-21swapper/300:04:273
89142410,2sleep30-21swapper/321:18:563
89142410,2sleep30-21swapper/321:18:563
157102410,1sleep00-21swapper/021:36:540
27062994031,3cyclictest181rcu_preempt22:16:131
27062994031,3cyclictest181rcu_preempt22:16:131
27062994011,4cyclictest281ktimers/121:28:441
118212400,3sleep10-21swapper/100:19:001
118212400,3sleep10-21swapper/100:19:001
60662390,1sleep06061-21grep19:43:580
60662390,1sleep06061-21grep19:43:580
27062993932,4cyclictest0-21swapper/100:03:541
221462390,2chrt22144-21timerandwakeup23:19:050
221462390,2chrt22144-21timerandwakeup23:19:050
221462390,2chrt22144-21timerandwakeup23:19:050
2706599382,29cyclictest5464-21chrt00:03:503
2706599382,29cyclictest5464-21chrt00:03:503
27062993815,5cyclictest271rcuc/120:07:201
27062993727,3cyclictest181rcu_preempt20:26:541
27062993727,3cyclictest181rcu_preempt20:26:541
27062993632,2cyclictest0-21swapper/100:03:441
27062993629,5cyclictest27301-21sshd22:08:531
327562350,2sleep032758-21if_err_wlan023:48:590
327562350,2sleep032758-21if_err_wlan023:48:590
27062993528,5cyclictest28892-21threads20:44:051
27062993528,5cyclictest28892-21threads20:44:051
27062993519,7cyclictest90-1pr/ttyS021:12:131
27062993519,7cyclictest90-1pr/ttyS021:12:131
78722340,1sleep00-21swapper/022:43:470
78722340,1sleep00-21swapper/022:43:470
27062993324,7cyclictest24832-21netstat20:34:001
177012330,2sleep017702-21/usr/sbin/munin23:08:560
166462330,3sleep0171ktimers/020:13:540
2706299327,7cyclictest281ktimers/100:31:471
27062993226,4cyclictest749-21runrttasks23:48:571
27062993226,4cyclictest749-21runrttasks23:48:571
27062993225,5cyclictest16821-21fschecks_count20:13:551
27062993222,4cyclictest181rcu_preempt23:00:061
27062993222,4cyclictest181rcu_preempt23:00:061
27062993221,4cyclictest181rcu_preempt20:00:251
27062993221,4cyclictest181rcu_preempt20:00:251
27062993217,5cyclictest773-21apache222:39:001
27062993217,5cyclictest773-21apache222:39:001
27062993216,8cyclictest90-1pr/ttyS021:58:451
27062993216,8cyclictest90-1pr/ttyS021:58:451
27061993226,4cyclictest1346-21avahi-daemon00:34:050
27061993225,5cyclictest3407-21latency_hist23:58:420
27061993225,5cyclictest27060-21cyclictest19:56:250
27061993224,6cyclictest11264-21fschecks_time19:58:550
27061993224,6cyclictest11264-21fschecks_time19:58:550
2706299316,5cyclictest271rcuc/121:23:461
2706299316,5cyclictest271rcuc/121:23:461
27062993124,4cyclictest281ktimers/123:47:451
27062993117,3cyclictest90-1pr/ttyS000:38:551
27062993117,3cyclictest90-1pr/ttyS000:38:551
27062993117,3cyclictest90-1pr/ttyS000:38:551
2706299311,6cyclictest700-21192.168.115.40-manager23:32:581
27061993126,4cyclictest18809-21processes21:44:030
27061993125,5cyclictest11980-21cut22:53:550
27061993124,5cyclictest24796-21latency_hist23:28:480
27061993124,5cyclictest24796-21latency_hist23:28:480
27062993025,3cyclictest14713-21kernelversion21:33:571
27062993023,5cyclictest26223-21cut20:38:561
27062993023,5cyclictest26223-21cut20:38:561
27062993021,7cyclictest4708-21kernelversion22:33:571
27062993021,7cyclictest4708-21kernelversion22:33:571
27062993020,3cyclictest181rcu_preempt19:42:281
27062993020,3cyclictest181rcu_preempt19:42:281
27062993016,4cyclictest181rcu_preempt23:23:021
27062993016,4cyclictest181rcu_preempt23:23:021
27062993016,4cyclictest181rcu_preempt23:23:021
27061993023,5cyclictest10698-21cut21:23:550
27061993021,7cyclictest28794-21fschecks_time23:38:550
27061993021,7cyclictest28794-21fschecks_time23:38:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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