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2026-06-01 - 04:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Mon Jun 01, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14990999624,10cyclictest1227-21runrttasks23:07:483
1499099954,25cyclictest0-21swapper/323:47:013
14990999519,16cyclictest19805-21open_inodes21:22:333
1499099944,29cyclictest0-21swapper/300:17:313
1499099944,29cyclictest0-21swapper/300:17:313
1499099925,76cyclictest0-21swapper/323:47:363
14990999210,24cyclictest0-21swapper/300:07:093
1499099905,77cyclictest0-21swapper/323:53:183
1499099905,29cyclictest0-21swapper/319:52:083
1499099903,13cyclictest17572-21ssh00:32:323
1499099894,75cyclictest0-21swapper/319:27:403
1499099894,75cyclictest0-21swapper/319:27:403
219499880,5rtkit-daemon2193-21rtkit-daemon22:57:193
219499880,5rtkit-daemon2193-21rtkit-daemon22:57:193
1499099889,11cyclictest656-21latency21:42:293
1499099886,28cyclictest0-21swapper/323:38:103
1499099886,28cyclictest0-21swapper/323:38:103
1499099879,11cyclictest9412-21cpuspeed_turbos00:22:133
14990998725,54cyclictest0-21swapper/319:32:233
14990998714,64cyclictest0-21swapper/322:12:363
14990998714,12cyclictest0-21swapper/321:48:463
1499099864,30cyclictest0-21swapper/322:42:173
1499099864,29cyclictest0-21swapper/320:07:343
1499099864,27cyclictest0-21swapper/322:07:303
14990998636,43cyclictest4744-21cpuspeed_turbos19:52:223
1499099863,25cyclictest0-21swapper/323:22:273
14990998628,50cyclictest11186-21unixbench_singl23:32:343
14990998625,52cyclictest18675-21latency19:12:363
14990998623,13cyclictest0-21swapper/319:57:433
14990998615,24cyclictest0-21swapper/321:56:293
14990998613,10cyclictest28003-21ssh22:22:303
167412850,3sleep3361ktimersoftd/319:07:403
1499099856,25cyclictest0-21swapper/300:03:203
1499099855,25cyclictest0-21swapper/322:27:063
1499099854,73cyclictest0-21swapper/321:27:223
14990998531,46cyclictest5318-21crond21:02:063
14990998521,56cyclictest28831-21cpu21:37:183
14990998521,56cyclictest28831-21cpu21:37:183
219499840,4rtkit-daemon2193-21rtkit-daemon19:39:573
1499099847,10cyclictest107550irq/46-eth000:12:163
1499099845,28cyclictest0-21swapper/320:22:213
1499099844,72cyclictest0-21swapper/321:59:363
1499099844,31cyclictest28877-21fschecks_time23:12:193
1499099844,15cyclictest0-21swapper/321:02:363
14990998426,11cyclictest29977-21unixbench_multi20:42:413
14990998417,10cyclictest23799-21df_abs22:17:183
14990998417,10cyclictest23799-21df_abs22:17:183
14989998431,45cyclictest773-21taskset00:08:012
1499099836,10cyclictest107550irq/46-eth022:37:043
1499099834,20cyclictest24506-21ssh23:07:013
1499099834,20cyclictest0-21swapper/323:57:113
14990998318,11cyclictest6442-21df_abs23:27:153
14989998337,29cyclictest29719-21ssh21:37:282
14989998337,29cyclictest29719-21ssh21:37:282
195052824,12sleep00-21swapper/021:22:290
1499099827,12cyclictest0-21swapper/319:42:213
1499099825,12cyclictest12181-21cut22:47:233
1499099824,24cyclictest0-21swapper/321:33:573
1499099824,24cyclictest0-21swapper/321:33:573
1499099824,12cyclictest32132-21rm23:17:183
1499099824,11cyclictest10103-21ssh21:08:393
14990998222,12cyclictest0-21swapper/322:39:203
1499099814,26cyclictest0-21swapper/300:29:273
1499099814,12cyclictest0-21swapper/321:14:453
14990998123,11cyclictest24711-21needreboot20:32:323
14990998111,11cyclictest14954-21munin-node21:17:393
1499099807,21cyclictest0-21swapper/320:17:093
1499099804,31cyclictest0-21swapper/319:17:393
1499099804,14cyclictest0-21swapper/322:53:483
14990998020,11cyclictest17189-21gltestperf20:17:303
14989998035,38cyclictest14609-21ssh22:52:042
1499099794,10cyclictest107550irq/46-eth020:27:243
14990997924,11cyclictest27610-21unixbench_multi20:37:413
14990997922,10cyclictest13694-21df_abs22:02:203
14990997920,10cyclictest10391-21needreboot20:02:363
14989997937,26cyclictest2977-21cpuspeed_turbos23:22:152
14989997832,39cyclictest0-21swapper/222:57:212
14989997832,39cyclictest0-21swapper/222:57:212
14989997832,38cyclictest0-21swapper/221:24:332
14989997830,32cyclictest0-21swapper/221:33:042
14989997830,32cyclictest0-21swapper/221:33:042
1499099776,16cyclictest0-21swapper/320:57:073
1499099776,16cyclictest0-21swapper/320:57:073
14989997735,35cyclictest32466-21df21:42:202
14989997733,36cyclictest0-21swapper/222:30:502
14989997732,40cyclictest0-21swapper/222:39:492
14989997731,37cyclictest0-21swapper/200:33:062
14989997729,40cyclictest0-21swapper/221:09:172
1499099764,28cyclictest17410-21kworker/u8:220:47:363
14990997617,13cyclictest0-21swapper/319:22:303
14990997617,13cyclictest0-21swapper/319:22:303
14989997634,35cyclictest0-21swapper/223:18:322
14989997632,35cyclictest0-21swapper/223:14:532
14989997531,38cyclictest0-21swapper/223:38:512
14989997531,38cyclictest0-21swapper/223:38:512
14989997436,14cyclictest19372-21ssh23:47:012
14989997433,35cyclictest28927-21ssh22:23:542
14989997432,11cyclictest14383-21turbostat.cron22:52:022
14989997430,29cyclictest0-21swapper/221:16:172
14989997426,42cyclictest0-21swapper/200:29:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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