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2025-12-23 - 00:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 highest latencies:
System rack2slot7s.osadl.org (updated Mon Dec 22, 2025 07:55:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1935077998566,13cyclictest1941246-21kworker/u8:17-rpciod05:56:570
1935078996637,5cyclictest2719215-21grep06:08:571
1935078996637,5cyclictest2719215-21grep06:08:571
1935078996435,7cyclictest2804455-21sh06:12:211
1935079996050,6cyclictest2783589-21sh06:11:312
1935079995446,5cyclictest2737294-21sh06:09:392
1935079995446,5cyclictest2737294-21sh06:09:392
193507999532,11cyclictest0-21swapper/205:29:422
1935077995345,5cyclictest2749048-21sh06:10:100
1935079995140,8cyclictest0-21swapper/205:39:442
1935077995136,5cyclictest2741272-21sh06:09:520
1935077995136,5cyclictest2741272-21sh06:09:520
1935077995043,4cyclictest2220694-21sh05:42:440
1935079994937,7cyclictest1938368-21kworker/u8:14-xprtiod05:49:502
1935077994944,2cyclictest12450irq/32-eth005:39:460
1935078994840,5cyclictest2167041-21sh05:40:311
1935079994736,7cyclictest2198699-21sh05:41:492
1935078994739,5cyclictest2242063-21execl05:50:021
1935078994237,2cyclictest0-21swapper/106:40:011
1935078994133,5cyclictest2243304-21execl05:50:271
1935078994130,8cyclictest2155082-21sh05:39:411
1935077994129,4cyclictest2243430-21fstime05:54:380
1935079994030,6cyclictest2244987-21Run05:58:402
1935077994033,4cyclictest0-21swapper/005:49:460
1935079993931,5cyclictest0-21swapper/206:25:012
193507999391,33cyclictest2095192-21spawn05:34:462
1935078993927,9cyclictest2824341-21/usr/sbin/munin06:25:011
1935079993828,7cyclictest2452505-21spawn06:03:382
1935078993829,6cyclictest2439381-21spawn06:03:351
1935078993829,6cyclictest0-21swapper/105:34:451
193507799387,4cyclictest171rcu_preempt06:19:440
1935079993730,4cyclictest0-21swapper/205:50:082
1935079993727,6cyclictest0-21swapper/206:39:402
1935079993627,5cyclictest1937983-21Run05:15:002
193507899361,30cyclictest1940008-21fstime05:24:471
1935077993627,7cyclictest2383921-21spawn06:03:300
1935077993627,6cyclictest2122791-21cron05:35:010
193507899358,15cyclictest577-21mta-sts-daemon06:34:451
193507899358,15cyclictest577-21mta-sts-daemon06:34:451
1935077993511,19cyclictest151ktimers/006:37:090
193507799348,15cyclictest577-21mta-sts-daemon06:24:460
1935077993426,4cyclictest0-21swapper/005:28:250
1935077993425,7cyclictest1938048-21cut05:15:010
1935079993224,5cyclictest1168-21mta-sts-daemon05:20:182
1935078993226,3cyclictest0-21swapper/106:20:011
193507799323,3cyclictest171rcu_preempt06:34:490
193507799323,3cyclictest171rcu_preempt06:34:490
1935079993123,5cyclictest2825802-21cron06:30:002
1935078993125,3cyclictest0-21swapper/105:59:471
1935078993123,5cyclictest1937604-21sendmail_mailtr05:14:511
1935078993121,5cyclictest0-21swapper/106:29:461
1935078993022,5cyclictest1935609-21fschecks_count05:09:361
1935078993021,6cyclictest1166-21mta-sts-daemon05:29:461
1935077993020,4cyclictest1939593-21unixbench_multi05:19:550
1935077993019,4cyclictest2825736-21unixbench_multi06:29:540
1935079992911,12cyclictest563-21avahi-daemon06:19:492
1935077992917,7cyclictest171rcu_preempt05:09:460
193507799288,3cyclictest171rcu_preempt05:24:450
193507999271,19cyclictest1813419-21cups-browsed05:09:432
1935079992619,4cyclictest0-21swapper/206:35:002
1935079992619,4cyclictest0-21swapper/206:35:002
1935079992618,5cyclictest1938778-21gltestperf05:19:392
1935078992619,4cyclictest1939718-21modprobe05:20:001
193507799231,19cyclictest564-21dbus-daemon05:05:010
1935078992213,6cyclictest1935175-21grep05:05:021
193508099214,8cyclictest0-21swapper/305:59:473
193508099182,9cyclictest0-21swapper/305:39:433
193508099182,10cyclictest0-21swapper/305:49:443
1935079991811,4cyclictest1935081-21sh05:05:012
193508099162,8cyclictest0-21swapper/305:43:563
193508099162,8cyclictest0-21swapper/305:34:483
193508099161,9cyclictest0-21swapper/306:10:423
193508099161,9cyclictest0-21swapper/306:09:523
193508099161,9cyclictest0-21swapper/306:09:523
193508099153,7cyclictest0-21swapper/305:50:043
193508099153,5cyclictest0-21swapper/305:19:463
193508099152,7cyclictest0-21swapper/305:24:453
193508099152,5cyclictest0-21swapper/306:34:483
193508099152,5cyclictest0-21swapper/306:34:483
193508099142,7cyclictest0-21swapper/305:29:463
193508099132,6cyclictest0-21swapper/306:19:493
193508099131,8cyclictest0-21swapper/305:14:453
193508099131,7cyclictest0-21swapper/306:00:093
193508099131,5cyclictest0-21swapper/306:37:093
193508099122,5cyclictest0-21swapper/305:09:423
193508099121,6cyclictest0-21swapper/306:24:453
193508099102,5cyclictest0-21swapper/306:29:553
19350809971,3cyclictest0-21swapper/305:05:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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