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2026-08-11 - 06:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack5slot4s.osadl.org (updated Tue Aug 11, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2522369995448,5cyclictest2628564-21kworker/u8:3+events_unbound22:20:000
2522369995446,6cyclictest2558918-21latency_hist19:45:010
2522373995247,3cyclictest1713309-21kworker/u8:1+events_unbound20:55:011
2522373995045,3cyclictest2811900-21kworker/u8:0+events_unbound00:17:471
2522369995046,3cyclictest2777507-21kworker/u8:0+events_unbound23:33:020
2522373994844,3cyclictest2787179-21kworker/u8:2+events_unbound23:55:001
2522369994844,3cyclictest2534362-21kworker/u8:0+events_unbound19:37:190
2522373994743,3cyclictest2583824-21kworker/u8:0+events_unbound20:45:011
2522369994743,3cyclictest2811900-21kworker/u8:0+events_unbound00:15:200
2522369994741,4cyclictest2822287-21/usr/sbin/munin00:13:060
2522369994643,2cyclictest2682815-21kworker/u8:1+events_unbound22:03:020
2522369994642,3cyclictest2628564-21kworker/u8:3+events_unbound22:20:040
2522369994541,3cyclictest2628564-21kworker/u8:3+events_unbound21:35:190
2522369994541,3cyclictest2573982-21kworker/u8:2+events_unbound21:02:190
2522369994540,4cyclictest2522244-21kworker/u8:2+events_unbound19:28:190
2522373994440,3cyclictest2787179-21kworker/u8:2+events_unbound00:02:451
2522369994440,3cyclictest2787179-21kworker/u8:2+events_unbound23:57:460
2522369994440,3cyclictest2787179-21kworker/u8:2+events_unbound23:57:460
2522369994440,3cyclictest2573982-21kworker/u8:2+events_unbound21:22:500
2522369994439,4cyclictest2682815-21kworker/u8:1+events_unbound22:40:080
2522373994338,4cyclictest2628564-21kworker/u8:3+events_unbound23:17:511
2522373994338,3cyclictest2682815-21kworker/u8:1+events_unbound22:58:041
2522369994339,3cyclictest2682815-21kworker/u8:1+events_unbound21:57:170
2522369994339,3cyclictest2534362-21kworker/u8:0+events_unbound19:48:060
2522369994338,4cyclictest1713309-21kworker/u8:1+events_unbound20:52:170
2522373994237,4cyclictest2703033-21kworker/u8:2+flush-8:023:07:481
2522373994235,5cyclictest1713309-21kworker/u8:1+flush-8:019:23:041
2522373994235,5cyclictest1713309-21kworker/u8:1+flush-8:019:23:041
2522369994238,3cyclictest2836917-21kworker/u8:1+events_unbound00:25:210
2522369994238,3cyclictest2682815-21kworker/u8:1+events_unbound22:05:190
2522369994238,3cyclictest2663306-21kworker/u8:0+events_unbound21:41:190
2522369994238,3cyclictest2583824-21kworker/u8:0+events_unbound20:31:190
2522369994238,3cyclictest2573982-21kworker/u8:2+events_unbound20:18:010
2522369994238,3cyclictest2544359-21kworker/u8:3+events_unbound19:58:040
2522369994238,3cyclictest2544359-21kworker/u8:3+events_unbound19:51:180
2522369994238,3cyclictest2475496-21kworker/u8:3+events_unbound19:11:180
2522369994237,4cyclictest2534362-21kworker/u8:0+events_unbound19:24:180
2522369994237,4cyclictest2534362-21kworker/u8:0+events_unbound19:24:180
2522373994136,4cyclictest2787179-21kworker/u8:2+events_unbound00:38:011
2522373994136,4cyclictest2573982-21kworker/u8:2+events_unbound21:18:011
2522373994136,3cyclictest2836678-21latency_hist00:25:011
2522369994137,3cyclictest2812140-21kworker/u8:4+events_unbound00:07:530
2522369994137,3cyclictest2777507-21kworker/u8:0+events_unbound23:41:240
2522369994137,3cyclictest2703033-21kworker/u8:2+events_unbound22:14:170
2522369994137,3cyclictest2628564-21kworker/u8:3+events_unbound22:55:210
2522369994137,3cyclictest2628564-21kworker/u8:3+events_unbound20:57:180
2522369994137,3cyclictest2573982-21kworker/u8:2+events_unbound20:07:180
2522369994137,3cyclictest1713309-21kworker/u8:1+events_unbound21:09:540
2522369994133,3cyclictest1713309-21kworker/u8:1+events_unbound20:37:590
2522373994036,3cyclictest2573982-21kworker/u8:2+events_unbound21:30:001
2522369994037,2cyclictest2703033-21kworker/u8:2+events_unbound23:00:090
2522369994036,3cyclictest2787179-21kworker/u8:2+events_unbound00:21:470
2522369994036,3cyclictest2772118-21kworker/u8:1+events_unbound23:27:230
2522369994036,3cyclictest2703033-21kworker/u8:2+events_unbound23:06:230
2522369994032,4cyclictest2703033-21kworker/u8:2+events_unbound22:25:190
2522373993935,3cyclictest2682815-21kworker/u8:1+events_unbound22:32:471
2522369993935,3cyclictest2682815-21kworker/u8:1+events_unbound21:53:040
2522369993935,3cyclictest1713309-21kworker/u8:1+events_unbound20:49:520
2522369993934,4cyclictest2703033-21kworker/u8:2+events_unbound22:38:170
2522373993834,3cyclictest2573982-21kworker/u8:2+events_unbound21:47:481
2522373993834,3cyclictest2534362-21kworker/u8:0+events_unbound19:37:491
2522373993834,3cyclictest1713309-21kworker/u8:1+events_unbound20:27:481
2522373993833,4cyclictest2787179-21kworker/u8:2+flush-8:000:12:531
2522373993833,4cyclictest2573982-21kworker/u8:2+events_unbound20:23:001
2522373993832,4cyclictest2573982-21kworker/u8:2+events_unbound20:03:001
2522369993834,3cyclictest2836917-21kworker/u8:1+events_unbound00:38:060
2522369993834,3cyclictest2812140-21kworker/u8:4+events_unbound00:04:380
2522369993834,3cyclictest2787179-21kworker/u8:2+events_unbound23:46:230
2522369993834,3cyclictest2787179-21kworker/u8:2+events_unbound23:36:230
2522369993834,3cyclictest2628564-21kworker/u8:3+events_unbound23:51:230
2522369993834,3cyclictest2583824-21kworker/u8:0+events_unbound20:24:180
2522369993834,3cyclictest1713309-21kworker/u8:1+events_unbound21:29:560
2522373993733,3cyclictest2628564-21kworker/u8:3+events_unbound22:12:471
2522373993733,2cyclictest2682815-21kworker/u8:1+events_unbound21:52:491
2522373993732,3cyclictest2703033-21kworker/u8:2+flush-8:022:47:591
2522369993733,3cyclictest2663306-21kworker/u8:0+events_unbound21:32:190
2522369993733,3cyclictest2663306-21kworker/u8:0+events_unbound21:32:180
2522369993733,3cyclictest2628564-21kworker/u8:3+events_unbound23:17:220
2522369993733,3cyclictest2534362-21kworker/u8:0+events_unbound19:32:180
2522369993733,3cyclictest1713309-21kworker/u8:1+events_unbound20:28:180
2522373993632,3cyclictest2762604-21kworker/u8:0+events_unbound23:15:011
2522373993631,4cyclictest2682815-21kworker/u8:1+events_unbound22:07:481
2522373993629,5cyclictest2732742-21latency_hist22:40:011
2522369993632,3cyclictest2812140-21kworker/u8:4+events_unbound00:35:000
2522369993632,3cyclictest2573982-21kworker/u8:2+events_unbound21:48:070
2522369993632,3cyclictest1713309-21kworker/u8:1+events_unbound20:43:060
2522369993626,8cyclictest2648870-21diskstats21:17:490
2522373993531,3cyclictest2663306-21kworker/u8:0+events_unbound21:32:451
2522373993531,3cyclictest2663306-21kworker/u8:0+events_unbound21:32:451
2522369993528,3cyclictest2703033-21kworker/u8:2+events_unbound22:52:490
2522369993528,3cyclictest2703033-21kworker/u8:2+events_unbound22:52:490
2522373993430,3cyclictest2703033-21kworker/u8:2+events_unbound22:42:471
2522373993427,5cyclictest2703033-21kworker/u8:2+flush-8:022:28:041
2522369993430,3cyclictest2703033-21kworker/u8:2+events_unbound22:46:170
2522369993430,3cyclictest1713309-21kworker/u8:1+events_unbound19:18:340
2522373993329,3cyclictest2663306-21kworker/u8:0+flush-8:021:42:491
2522373993329,3cyclictest2573982-21kworker/u8:2+events_unbound21:10:001
2522373993328,4cyclictest2522244-21kworker/u8:2+flush-8:019:28:031
2522373993328,3cyclictest2812140-21kworker/u8:4+events_unbound00:07:491
2522373993327,5cyclictest2703033-21kworker/u8:2+events_unbound23:23:021
2522373993228,3cyclictest2787179-21kworker/u8:2+events_unbound00:32:471
2522373993228,3cyclictest2573982-21kworker/u8:2+events_unbound21:22:541
2522373993228,3cyclictest1713309-21kworker/u8:1+events_unbound19:18:261
2522373993227,4cyclictest2475496-21kworker/u8:3+events_unbound19:13:001
2522373993226,4cyclictest2787179-21kworker/u8:2+flush-8:023:42:511
2522369993228,3cyclictest2544359-21kworker/u8:3+events_unbound20:00:030
2522379993121,8cyclictest2608584-21/usr/sbin/munin20:35:002
2522373993126,3cyclictest2544359-21kworker/u8:3+flush-8:019:42:491
2522369993127,3cyclictest2573982-21kworker/u8:2+events_unbound20:10:240
26749972300,5sleep2371rcuc/221:42:532
2522373993024,5cyclictest2777507-21kworker/u8:0+flush-8:023:33:041
2522373993022,6cyclictest2792125-21latency_hist23:40:011
2522373993019,4cyclictest2573982-21kworker/u8:2+events_unbound21:02:481
2522369993026,3cyclictest2703033-21kworker/u8:2+events_unbound23:22:070
2522369993026,3cyclictest1713309-21kworker/u8:1+events_unbound21:14:200
25221202304,10sleep20-21swapper/219:09:102
2522373992924,4cyclictest2682815-21kworker/u8:1+events_unbound22:00:071
2522373992924,3cyclictest2573982-21kworker/u8:2+flush-8:020:17:531
2522373992924,3cyclictest2544359-21kworker/u8:3+events_unbound19:52:521
2522373992922,5cyclictest2628564-21kworker/u8:3+events_unbound22:22:571
2522373992921,6cyclictest2573982-21kworker/u8:2+flush-8:020:57:571
2522373992921,5cyclictest275-21systemd-journal21:58:171
2522369992925,3cyclictest2762604-21kworker/u8:0+events_unbound23:11:050
2522369992925,3cyclictest2703033-21kworker/u8:2+events_unbound22:34:200
2522379992824,2cyclictest2727604-21unixbench_singl22:33:042
2522379992824,2cyclictest2598185-21unixbench_multi20:23:052
2522379992823,3cyclictest2792947-21fschecks_time23:42:472
2522373992824,3cyclictest2544359-21kworker/u8:3+flush-8:019:58:021
2522373992823,4cyclictest1713309-21kworker/u8:1+events_unbound21:13:041
2522373992821,5cyclictest2609031-21apt-get20:37:421
2522379992723,2cyclictest2668673-21cpuspeed_turbos21:37:492
2522379992723,2cyclictest2629143-21fschecks_time20:57:492
2522379992722,4cyclictest2668002-21idleruntime-cro21:35:002
2522379992722,4cyclictest2668002-21idleruntime-cro21:35:002
2522373992723,3cyclictest2583824-21kworker/u8:0+events_unbound20:47:501
2522373992722,3cyclictest2663306-21kworker/u8:0+flush-8:021:38:061
2522379992622,2cyclictest2623948-21aten2_r5power_v20:52:472
2522379992621,3cyclictest2707506-21unixbench_multi22:13:032
2522379992620,4cyclictest2737474-21unixbench_multi22:43:012
2522373992623,2cyclictest850-21mta-sts-daemon19:32:541
2522373992622,3cyclictest2703033-21kworker/u8:2+events_unbound23:02:571
2522373992622,3cyclictest2573982-21kworker/u8:2+flush-8:020:13:031
2522373992621,4cyclictest2812140-21kworker/u8:4+flush-8:000:28:021
26712412250,2sleep3481ktimers/321:37:573
2522379992521,3cyclictest2768027-21cpuspeed_turbos23:17:462
2522379992521,2cyclictest2762885-21aten2_r5power_e23:12:462
2522379992521,2cyclictest2643784-21aten2_r5power_v21:12:472
2522379992521,2cyclictest0-21swapper/200:30:012
2522373992520,3cyclictest2801772-21unixbench_multi23:48:031
2522373992519,4cyclictest2573982-21kworker/u8:2+flush-8:020:07:531
2522379992421,2cyclictest2619291-21cut20:47:492
2522379992420,3cyclictest2847291-21aten2_r5power_c00:37:452
2522379992420,2cyclictest2777927-21cpuspeed_turbos23:27:482
2522379992420,2cyclictest2772830-21aten2_r5power_p23:22:482
2522379992420,2cyclictest2633859-21aten2_r5power_v21:02:452
2522373992420,3cyclictest2583824-21kworker/u8:0+events_unbound20:31:371
2522373992420,2cyclictest0-21swapper/122:55:001
2522373992420,2cyclictest0-21swapper/122:55:001
2522373992419,4cyclictest2534362-21kworker/u8:0+flush-8:019:47:591
2522373992418,4cyclictest2787179-21kworker/u8:2+events_unbound23:58:521
2522373992418,4cyclictest2787179-21kworker/u8:2+events_unbound23:58:521
25213132243,14sleep00-21swapper/019:07:560
2522379992320,2cyclictest2753684-21irqrtprio23:02:512
2522379992320,2cyclictest2539631-21aten2_r5power_e19:27:472
2522379992318,4cyclictest2703033-21kworker/u8:2+flush-8:022:48:042
2522379992318,4cyclictest2593495-21sendmail20:20:002
2522379992318,3cyclictest2639432-21cut21:07:502
2522379992317,5cyclictest2836472-21unixbench_singl00:23:052
2522373992317,5cyclictest2628564-21kworker/u8:3+flush-8:022:17:591
2522379992219,2cyclictest2544599-21aten2_r5power_v19:32:462
252237999218,9cyclictest2713201-21apt-get22:22:452
2522379992118,2cyclictest2743309-21cpuspeed_turbos22:52:492
2522379992118,2cyclictest2743309-21cpuspeed_turbos22:52:492
2522379992111,8cyclictest2722585-21apt-get22:30:002
2522373992117,2cyclictest0-21swapper/123:27:491
25220742213,13sleep10-21swapper/119:08:331
26995062200,6chrt0-21swapper/222:07:532
252237999206,5cyclictest0-21swapper/221:23:062
2522379992016,3cyclictest2811921-21sendmail00:00:002
2522379992016,3cyclictest2811921-21sendmail00:00:002
2522379992016,2cyclictest2522943-21cpuspeed_turbos19:12:472
2522379992016,2cyclictest0-21swapper/220:15:012
2522379992015,4cyclictest2652871-21unixbench_singl21:18:042
2522379992014,2cyclictest0-21swapper/200:18:082
2522379992012,6cyclictest2613440-21sshd20:39:172
28188052190,3sleep3575-21kworker/3:2+events00:07:553
252237999196,5cyclictest0-21swapper/223:52:462
252237999192,13cyclictest2782660-21apt-get23:32:452
2522379991915,2cyclictest2826771-21cron00:15:002
2522379991915,2cyclictest0-21swapper/221:47:562
2522379991915,2cyclictest0-21swapper/200:07:542
2522379991914,4cyclictest2792133-21idleruntime-cro23:40:002
2522379991914,1cyclictest0-21swapper/219:42:162
2522379991911,6cyclictest275-21systemd-journal22:55:192
25175362192,8sleep30-21swapper/319:05:033
252237999189,7cyclictest2603551-21cat20:30:002
252237999186,8cyclictest2571639-21cut19:57:542
252237999182,11cyclictest2801292-21ntpq23:47:562
2522379991815,2cyclictest2534707-21aten2_r5power_v19:22:482
2522379991815,2cyclictest2534707-21aten2_r5power_v19:22:482
2522379991815,2cyclictest0-21swapper/200:32:532
2522379991814,2cyclictest0-21swapper/200:03:002
2522379991813,4cyclictest0-21swapper/222:02:432
2522379991813,3cyclictest0-21swapper/219:48:042
25395462178,5sleep30-21swapper/319:27:453
2522379991712,3cyclictest2712519-21unixbench_singl22:18:032
2522379991712,3cyclictest2578446-21grep20:03:032
2522379991712,3cyclictest0-21swapper/222:37:452
2522379991712,3cyclictest0-21swapper/221:52:472
2522379991712,3cyclictest0-21swapper/219:15:022
2522379991711,4cyclictest2692850-21sed22:00:012
2522379991711,4cyclictest0-21swapper/219:53:032
27829932160,2sleep3481ktimers/323:32:483
252237999168,6cyclictest2550832-21cut19:37:542
252237999167,6cyclictest2618646-21sed20:45:012
252237999162,10cyclictest2761675-21ntpq23:07:572
2522379991613,2cyclictest0-21swapper/221:27:582
2522379991611,3cyclictest0-21swapper/220:07:542
27282662152,9sleep30-21swapper/322:37:443
28260342132,7sleep30-21swapper/300:13:023
27536452132,7sleep30-21swapper/323:02:523
26283202132,7sleep30-21swapper/320:55:003
26227672132,7sleep30-21swapper/320:48:023
26033442134,5sleep30-21swapper/320:30:003
25807482132,7sleep30-21swapper/320:07:543
28461852122,6sleep30-21swapper/300:33:003
28122002123,6sleep30-21swapper/300:00:503
28091332122,6sleep30-21swapper/323:57:533
28091332122,6sleep30-21swapper/323:57:533
28062062122,6sleep30-21swapper/323:53:003
27970882122,5sleep30-21swapper/323:45:013
27873832122,5sleep30-21swapper/323:35:023
27821852121,7sleep30-21swapper/323:30:003
27722602120,2sleep30-21swapper/323:20:003
27579162122,6sleep30-21swapper/323:07:453
27327312122,5sleep30-21swapper/322:40:013
27190382122,6sleep30-21swapper/322:27:533
27167862122,6sleep30-21swapper/322:22:563
27122422122,6sleep30-21swapper/322:18:023
26983312122,6sleep30-21swapper/322:07:473
26881852122,6sleep30-21swapper/321:57:443
26734102122,6sleep30-21swapper/321:42:473
26582612122,6sleep30-21swapper/321:25:023
26574822122,6sleep30-21swapper/321:23:053
26431812123,6sleep30-21swapper/321:09:533
26333992122,6sleep30-21swapper/321:00:023
25935842122,6sleep30-21swapper/320:20:013
25838182122,6sleep30-21swapper/320:10:023
25778942122,6sleep30-21swapper/320:02:563
25499482122,6sleep30-21swapper/319:37:523
25345972122,6sleep30-21swapper/319:22:483
25345972122,6sleep30-21swapper/319:22:483
25296392123,6sleep30-21swapper/319:17:463
28472632112,6sleep30-21swapper/300:37:453
28366912112,5sleep30-21swapper/300:25:013
28320092112,6sleep30-21swapper/300:20:363
28270062112,5sleep30-21swapper/300:15:023
27925302112,6sleep30-21swapper/323:42:123
27722602112,5sleep30-21swapper/323:20:013
27625162112,5sleep30-21swapper/323:10:023
27478352112,6sleep30-21swapper/322:55:383
27429192112,6sleep30-21swapper/322:50:523
27429192112,6sleep30-21swapper/322:50:523
27379412112,5sleep30-21swapper/322:45:023
27228752112,5sleep30-21swapper/322:30:023
27030812112,6sleep30-21swapper/322:10:443
26977462112,6sleep30-21swapper/322:03:383
26827842112,5sleep30-21swapper/321:50:013
26792452112,5sleep30-21swapper/321:47:533
26633212112,6sleep30-21swapper/321:31:073
26633212112,6sleep30-21swapper/321:31:073
26431932112,5sleep30-21swapper/321:10:013
26290512112,5sleep30-21swapper/320:57:493
26138382113,5sleep30-21swapper/320:41:083
26092762112,6sleep30-21swapper/320:37:473
26039892112,5sleep30-21swapper/320:32:173
25888202112,6sleep30-21swapper/320:15:363
25690832112,6sleep30-21swapper/319:55:543
25641042112,6sleep30-21swapper/319:50:363
25598552112,6sleep30-21swapper/319:47:513
25543032112,6sleep30-21swapper/319:41:293
25489952113,5sleep30-21swapper/319:34:593
25225342112,6sleep30-21swapper/319:10:363
26485712102,5sleep30-21swapper/321:17:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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