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2026-01-01 - 16:57

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 Jan 01, 2026 12:44:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2073221220,3sleep020013-21/usr/sbin/munin12:35:390
2073221220,3sleep020013-21/usr/sbin/munin12:35:390
318372950,1sleep031839-21latency_hist11:40:310
91302740,2chrt0-21swapper/007:45:330
91302740,2chrt0-21swapper/007:45:330
228702650,3sleep00-21swapper/009:50:200
283692620,2sleep20-21swapper/211:30:322
283692620,2sleep20-21swapper/211:30:322
42052590,2sleep20-21swapper/209:00:252
42052590,2sleep20-21swapper/209:00:252
99582560,3sleep20-21swapper/207:45:592
99582560,3sleep20-21swapper/207:45:592
29862550,2chrt0-21swapper/311:50:193
29862550,2chrt0-21swapper/311:50:193
274442540,3sleep20-21swapper/208:35:322
274442540,3sleep20-21swapper/208:35:322
200552540,5sleep020056-21fschecks_time08:15:320
200552540,5sleep020056-21fschecks_time08:15:320
200552540,5sleep020056-21fschecks_time08:15:320
35252520,2sleep30-21swapper/311:50:363
299052520,3chrt0-21swapper/008:40:370
299052520,3chrt0-21swapper/008:40:370
185322510,3sleep20-21swapper/212:30:352
185322510,3sleep20-21swapper/212:30:352
79662470,3sleep20-21swapper/210:35:332
79662470,3sleep20-21swapper/210:35:332
280812460,1sleep016-21ksoftirqd/010:00:450
280812460,1sleep016-21ksoftirqd/010:00:450
199442450,3sleep30-21swapper/312:35:263
199442450,3sleep30-21swapper/312:35:263
319462440,2sleep132001-21tune2fs11:40:331
319462440,2sleep132001-21tune2fs11:40:331
308282440,2sleep20-21swapper/210:10:322
308282440,2sleep20-21swapper/210:10:322
122072440,1sleep00-21swapper/009:20:330
325162430,3sleep20-21swapper/210:15:322
325162430,3sleep20-21swapper/210:15:322
325162430,3sleep20-21swapper/210:15:322
108712430,2sleep00-21swapper/012:10:350
113532420,2sleep20-21swapper/212:10:412
28044993935,3cyclictest1690-21cron10:20:200
28044993935,3cyclictest1690-21cron10:20:200
28044993935,3cyclictest1690-21cron10:20:200
28044993730,5cyclictest14044-21systemctl10:50:420
28044993730,5cyclictest14044-21systemctl10:50:420
222812370,3sleep30-21swapper/309:45:413
28045993629,5cyclictest24125-21latency_hist11:20:201
28045993629,5cyclictest24125-21latency_hist11:20:201
28045993629,5cyclictest24125-21latency_hist11:20:201
178632350,2sleep017867-21switchtime11:00:430
178632350,2sleep017867-21switchtime11:00:430
100792350,3sleep20-21swapper/209:15:282
100792350,3sleep20-21swapper/209:15:282
100792350,3sleep20-21swapper/209:15:282
28045993426,6cyclictest4503-21netstat10:25:381
28045993426,6cyclictest4503-21netstat10:25:381
157122330,4chrt0-21swapper/309:30:333
157122330,4chrt0-21swapper/309:30:333
157122330,4chrt0-21swapper/309:30:333
29542320,3sleep20-21swapper/210:20:452
29542320,3sleep20-21swapper/210:20:452
28044993226,5cyclictest7284-21kernelversion07:40:330
28044993226,5cyclictest7284-21kernelversion07:40:330
173742320,2chrt17376-21kernelversion11:00:361
173742320,2chrt17376-21kernelversion11:00:361
28044993126,4cyclictest545-21in:imuxsock09:05:210
28044993126,4cyclictest545-21in:imuxsock09:05:210
28044993126,4cyclictest4131-21cut10:25:330
28044993126,4cyclictest4131-21cut10:25:330
28044993126,3cyclictest0-21swapper/008:30:200
28044993126,3cyclictest0-21swapper/008:30:200
28044993125,5cyclictest2640-21netstat10:20:410
28044993125,5cyclictest2640-21netstat10:20:410
28044993125,5cyclictest15375-21latency_hist09:30:190
28044993125,5cyclictest15375-21latency_hist09:30:190
118142310,3chrt0-21swapper/312:10:463
28044993025,3cyclictest6695-21cron12:00:190
28044993025,3cyclictest6695-21cron12:00:190
28044993025,3cyclictest142-21systemd-journal11:00:200
28044993025,3cyclictest142-21systemd-journal11:00:200
28044993024,5cyclictest10653-21fschecks_count07:50:310
28044993024,5cyclictest10653-21fschecks_count07:50:310
28044993023,5cyclictest14919-21needreboot08:00:370
28044993023,5cyclictest14919-21needreboot08:00:370
289912290,3sleep30-21swapper/308:40:203
289912290,3sleep30-21swapper/308:40:203
28045992922,5cyclictest29419-21ntp_offset10:05:381
28045992922,5cyclictest29419-21ntp_offset10:05:381
28045992914,2cyclictest181rcu_preempt12:05:311
28045992914,2cyclictest181rcu_preempt12:05:311
28044992925,3cyclictest5866-21sort10:30:330
28044992925,3cyclictest5866-21sort10:30:330
28044992924,4cyclictest545-21in:imuxsock07:40:190
28044992924,4cyclictest545-21in:imuxsock07:40:190
28044992923,4cyclictest28043-21cyclictest08:07:270
28044992923,4cyclictest28043-21cyclictest08:07:270
28044992923,4cyclictest19107-21sendmail09:40:190
28044992923,4cyclictest19107-21sendmail09:40:190
28044992923,4cyclictest19107-21sendmail09:40:190
28044992922,5cyclictest24123-21sendmail11:20:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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