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2026-08-31 - 11:48

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
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack5slot4s.osadl.org (updated Mon Aug 31, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12554352600,4chrt0-21swapper/123:17:371
12266052550,3sleep3575-21kworker/3:2+events22:47:373
1007792995038,9cyclictest275-21systemd-journal22:45:001
1007792994536,7cyclictest1138664-21apt-get21:20:001
1007792994439,3cyclictest1163484-21kworker/u8:2+events_unbound21:45:001
1007792994435,6cyclictest1178504-21latency_hist22:00:001
1007792994237,4cyclictest1069521-21kworker/u8:2+flush-8:021:22:341
1007792994232,8cyclictest275-21systemd-journal21:52:321
1007792994232,8cyclictest275-21systemd-journal21:52:321
1007792994133,6cyclictest969850-21kworker/u8:1+flush-8:019:57:421
100778999411,38cyclictest1-21systemd00:30:000
100778999411,38cyclictest1-21systemd00:30:000
1007796994023,15cyclictest1183150-21unixbench_multi22:02:482
1007792994034,4cyclictest275-21systemd-journal19:12:321
1007792994034,4cyclictest275-21systemd-journal19:12:321
1007789994032,6cyclictest1138673-21latency_hist21:20:000
1007789994031,6cyclictest1297816-21latency_hist00:00:010
1007796993921,16cyclictest275-21systemd-journal00:31:322
1007796993921,16cyclictest275-21systemd-journal00:31:322
1007792993934,3cyclictest1014821-21kworker/u8:2+flush-8:019:42:461
1007792993930,6cyclictest1263657-21/usr/sbin/munin23:27:481
1007789993931,6cyclictest275-21systemd-journal23:32:310
1007796993717,18cyclictest1306923-21grep00:07:432
1007792993732,4cyclictest1069521-21kworker/u8:2+flush-8:020:22:331
1007789993730,5cyclictest275-21systemd-journal00:05:000
1007789993728,6cyclictest275-21systemd-journal22:25:000
1007792993631,3cyclictest1213151-21kworker/u8:0+events_unbound00:10:071
1007792993628,6cyclictest1213737-21/usr/sbin/munin22:37:441
1007796993521,12cyclictest1293448-21aten2_r5power_v23:57:302
1007796993518,15cyclictest1164439-21fschecks_time21:47:332
1007792993529,5cyclictest1094126-21kworker/u8:0+flush-8:021:37:531
1007792993524,8cyclictest275-21systemd-journal20:40:001
1007789993527,6cyclictest1194351-21fschecks_time22:17:340
1007796993418,14cyclictest1065248-21fschecks_count20:07:332
1007792993429,4cyclictest1094126-21kworker/u8:0+flush-8:020:57:331
1007792993429,3cyclictest1213151-21kworker/u8:0+flush-8:022:47:421
1007792993427,5cyclictest1303319-21grep00:07:311
1007792993425,6cyclictest275-21systemd-journal19:35:321
1007789993426,6cyclictest1259243-21irqrtprio23:22:370
10213772330,2sleep2371rcuc/219:22:382
100779699337,21cyclictest1079829-21apt-get20:22:292
1007796993311,19cyclictest1034792-21cut19:35:012
1007792993327,4cyclictest998086-21kworker/u8:3+flush-8:019:30:371
1007792993326,5cyclictest1243740-21grep23:07:301
1007789993329,3cyclictest1317627-21apt00:20:000
1007789993326,5cyclictest1149225-21aten2_r5power_c21:32:320
1007789993326,4cyclictest1-21systemd22:45:000
100778999331,6cyclictest1183440-21munin-run22:05:010
10075672334,9sleep10-21swapper/119:09:211
100779699323,7cyclictest1008133-21apt-get19:12:302
100779699323,7cyclictest1008133-21apt-get19:12:302
1007796993214,16cyclictest1093973-21unixbench_multi20:32:492
1007796993213,16cyclictest0-21swapper/222:55:552
1007796993212,17cyclictest0-21swapper/200:22:392
1007792993227,3cyclictest1297838-21kworker/u8:2+events_unbound00:30:001
1007792993227,3cyclictest1297838-21kworker/u8:2+events_unbound00:30:001
1007792993227,3cyclictest1283978-21irqcore23:47:351
1007792993227,2cyclictest0-21swapper/100:22:321
1007789993227,3cyclictest1238063-21apt-get23:00:000
1007789993225,6cyclictest1094126-21kworker/u8:0+flush-8:020:37:420
1007789993225,6cyclictest1064276-21unixbench_multi20:02:500
1007796993113,16cyclictest1308442-21fschecks_count00:12:342
100779699311,16cyclictest1-21systemd21:55:322
100779699311,11cyclictest1332958-21apt-get00:37:312
100779699311,11cyclictest1332958-21apt-get00:37:312
1007796993111,17cyclictest1193777-21sed22:15:012
1007792993127,3cyclictest1153579-21kworker/u8:3+events_unbound22:32:321
1007792993126,4cyclictest1320619-21kworker/u8:1+events_unbound00:32:321
1007792993126,4cyclictest1320619-21kworker/u8:1+events_unbound00:32:321
1007792993126,4cyclictest1044442-21kworker/u8:0+flush-8:019:47:331
1007792993124,5cyclictest1129248-21apt-get21:12:291
1007789993127,3cyclictest1337479-21apt-get00:40:000
1007789993127,3cyclictest1337479-21apt-get00:40:000
1007789993125,4cyclictest1213121-21unixbench_singl22:32:500
1007789993124,5cyclictest1263903-21cpuspeed_turbos23:27:320
100779699309,19cyclictest1101534-21tr20:42:372
100779699302,6cyclictest1098693-21python320:37:482
1007796993012,16cyclictest1248913-21fschecks_count23:12:332
1007792993026,3cyclictest969850-21kworker/u8:1+flush-8:020:02:531
1007792993026,3cyclictest1184590-21irqrtprio22:07:351
1007792993025,3cyclictest1313862-21irqrtprio00:17:361
1007792993024,4cyclictest1163484-21kworker/u8:2+flush-8:022:22:411
1007792993023,5cyclictest1213151-21kworker/u8:0+flush-8:000:02:371
1007792993022,6cyclictest275-21systemd-journal23:35:001
1007792993022,6cyclictest1069521-21kworker/u8:2+events_unbound21:32:491
1007789993025,4cyclictest1094126-21kworker/u8:0+flush-8:021:02:330
1007789993024,5cyclictest1168367-21unixbench_multi21:47:480
1007789993023,6cyclictest1055201-21aten2_r5power_v19:57:300
1007789993022,6cyclictest1332518-21latency_hist00:35:000
1007789993022,6cyclictest1332518-21latency_hist00:35:000
1007796992925,3cyclictest1282787-21unixbench_singl23:42:512
100779699291,9cyclictest1202818-21/usr/sbin/munin22:22:492
1007796992911,16cyclictest0-21swapper/223:02:382
1007789992925,3cyclictest1157890-21needreboot21:37:460
1007789992923,4cyclictest1213851-21aten2_r5power_p22:37:340
1007789992922,6cyclictest1189195-21aten2_r5power_v22:12:320
1007789992922,5cyclictest1124365-21aten2_r5power_e21:07:290
1007789992922,5cyclictest1020073-21aten2_r5power_p19:22:320
100779699289,17cyclictest1219985-21tr22:42:382
100779699287,7cyclictest1195986-21tr22:17:392
100779699287,2cyclictest0-21swapper/221:22:382
1007796992825,2cyclictest1108836-21unixbench_singl20:47:482
100779699282,10cyclictest1078656-21ntpq20:17:422
100779699281,5cyclictest1159151-21apt-get21:42:312
100779699281,11cyclictest1058447-21kthreadcore19:57:382
1007796992811,15cyclictest0-21swapper/221:07:392
100779699281,10cyclictest1118208-21ntpq20:57:432
1007792992824,2cyclictest0-21swapper/123:00:011
1007792992822,4cyclictest1238577-21kworker/u8:1+flush-8:023:12:341
1007792992822,4cyclictest1069521-21kworker/u8:2+flush-8:021:27:481
1007792992821,5cyclictest1094126-21kworker/u8:0+flush-8:020:47:431
1007789992823,3cyclictest1079366-21cron20:20:000
1007789992823,3cyclictest0-21swapper/020:15:000
1007789992822,5cyclictest1089782-21aten2_r5power_e20:32:300
1007789992822,4cyclictest1303347-21aten2_r5power_p00:07:310
1007789992821,6cyclictest1318151-21aten2_r5power_e00:22:320
1007789992821,5cyclictest275-21systemd-journal23:49:250
1007789992818,8cyclictest1048733-21ntpq19:47:410
1007789992810,15cyclictest1002767-21kworker/0:2+events21:12:300
100779699277,2cyclictest0-21swapper/220:12:342
100779699276,7cyclictest1261545-21tr23:22:392
100779699276,6cyclictest1255258-21tr23:17:372
100779699276,4cyclictest1119601-21tr21:02:312
100779699273,6cyclictest1050176-21apt-get19:52:302
100779699272,5cyclictest1060068-21apt-get20:02:312
100779699272,4cyclictest1149191-21apt-get21:32:312
100779699272,3cyclictest1268617-21apt-get23:32:302
1007796992723,3cyclictest1154399-21cpuspeed_turbos21:37:332
1007796992723,2cyclictest1029166-21unixbench_multi19:27:522
100779699272,12cyclictest1209097-21diskstats22:32:332
100779699271,9cyclictest1084766-21/usr/sbin/munin20:27:292
100779699271,9cyclictest1047424-21cut19:47:372
100779699271,8cyclictest1302065-21ntpq00:02:422
100779699271,5cyclictest1277360-21ntpq23:37:432
1007796992711,15cyclictest0-21swapper/221:12:372
1007796992711,14cyclictest0-21swapper/222:27:382
1007796992711,14cyclictest0-21swapper/219:40:522
100779699270,9cyclictest1188697-21dpkg22:10:012
1007792992723,3cyclictest401-21dbus-daemon19:30:011
1007792992723,3cyclictest1232882-21unixbench_multi22:52:491
1007792992723,3cyclictest1084348-21kworker/u8:3+flush-8:021:02:451
1007792992722,4cyclictest1337603-21apt-key00:40:001
1007792992722,4cyclictest1337603-21apt-key00:40:001
1007792992722,4cyclictest1069521-21kworker/u8:2+flush-8:021:07:461
1007792992721,4cyclictest1054388-21unixbench_multi19:52:481
1007789992724,2cyclictest1169357-21cut21:52:330
1007789992724,2cyclictest1169357-21cut21:52:330
1007789992723,3cyclictest1242465-21needreboot23:02:410
1007789992722,4cyclictest1213151-21kworker/u8:0+flush-8:000:12:340
1007789992721,5cyclictest1278566-21aten2_r5power_c23:42:320
1007789992721,4cyclictest1035404-21fschecks_time19:37:340
1007789992720,5cyclictest1029913-21aten2_r5power_c19:32:300
100779699266,2cyclictest0-21swapper/220:51:272
100779699265,3cyclictest0-21swapper/200:18:062
100779699262,11cyclictest1232416-21ntpq22:52:422
100779699261,10cyclictest1267455-21ntpq23:27:442
100779699261,10cyclictest1227998-21/usr/sbin/munin22:47:482
100779699260,9cyclictest1292202-21grep23:52:442
100779699260,7cyclictest1244599-21/usr/sbin/munin23:07:372
1007792992622,3cyclictest998086-21kworker/u8:3+events_unbound19:22:331
1007792992622,2cyclictest1164806-21irqrtprio21:47:361
1007792992622,2cyclictest0-21swapper/123:22:351
1007792992619,5cyclictest969850-21kworker/u8:1+events_unbound20:12:481
1007789992621,3cyclictest0-21swapper/022:50:000
1007789992621,3cyclictest0-21swapper/021:57:400
1007789992620,5cyclictest1143580-21unixbench_multi21:22:500
1007789992620,4cyclictest1013041-21irqcore19:15:010
1007789992620,4cyclictest1013041-21irqcore19:15:010
100779699257,15cyclictest0-21swapper/223:45:072
100779699250,8cyclictest1323001-21/usr/sbin/munin00:27:292
100779699250,8cyclictest1323001-21/usr/sbin/munin00:27:282
100779699250,8cyclictest1173656-21sort21:55:002
100779699250,8cyclictest1173656-21sort21:55:002
100779699250,8cyclictest1016094-21cut19:17:382
1007792992522,2cyclictest1094240-21cron20:35:001
1007792992521,3cyclictest1213151-21kworker/u8:0+flush-8:023:37:341
1007792992521,2cyclictest0-21swapper/123:57:301
1007792992520,3cyclictest1079384-21munin-run20:20:001
1007789992521,3cyclictest1079887-21aten2_r5power_e20:22:300
1007789992520,3cyclictest1232315-21needreboot22:52:390
1007789992520,3cyclictest0-21swapper/023:07:360
1007789992519,5cyclictest1203946-21aten2_r5power_e22:27:320
1007789992519,4cyclictest1163484-21kworker/u8:2+events_unbound23:20:010
1007789992519,4cyclictest1044442-21kworker/u8:0+flush-8:019:52:330
1007789992517,6cyclictest1100358-21irqrtprio20:42:350
100779699247,2cyclictest1037451-21cut19:37:392
100779699243,7cyclictest1147163-21tr21:27:412
100779699241,8cyclictest1137755-21/usr/sbin/munin21:17:402
100779699240,6cyclictest1217624-21/usr/sbin/munin22:37:472
1007792992421,2cyclictest1067154-21kthreadcore20:07:391
1007792992420,3cyclictest1213151-21kworker/u8:0+flush-8:023:43:371
1007792992420,2cyclictest0-21swapper/123:02:481
1007792992420,2cyclictest0-21swapper/120:52:341
1007792992419,3cyclictest1019328-21unixbench_singl19:17:501
1007792992413,2cyclictest0-21swapper/122:02:391
1007789992420,3cyclictest1249341-21tr23:12:360
1007789992420,3cyclictest1069521-21kworker/u8:2+flush-8:020:57:520
1007789992419,3cyclictest0-21swapper/020:52:420
1007789992419,3cyclictest0-21swapper/019:27:350
1007792992318,4cyclictest1094126-21kworker/u8:0+events_unbound20:42:411
1007792992318,3cyclictest0-21swapper/120:27:491
1007792992315,5cyclictest0-21swapper/123:52:351
1007792992313,8cyclictest1207649-21ntpq22:27:431
100778999232,20cyclictest0-21swapper/019:17:480
1007789992319,3cyclictest1163655-21munin-run21:45:000
1007789992318,3cyclictest0-21swapper/019:45:010
1007792992213,6cyclictest1-21systemd22:20:011
100778999222,4cyclictest0-21swapper/020:05:590
100778999222,19cyclictest0-21swapper/023:37:470
1007789992218,2cyclictest0-21swapper/020:47:430
1007789992217,3cyclictest1184086-21cpuspeed_turbos22:07:300
100779699210,8cyclictest1007836-21sed19:10:002
1007789992117,3cyclictest1292628-21unixbench_multi23:52:500
1007789992117,2cyclictest0-21swapper/020:27:410
1007789992115,4cyclictest0-21swapper/021:27:390
1007792992014,4cyclictest0-21swapper/122:12:321
10029562183,8sleep30-21swapper/319:05:023
10029582152,6sleep00-21swapper/019:05:030
11541762142,8sleep30-21swapper/321:37:323
11050592140,10sleep30-21swapper/320:47:353
10321102145,5sleep30-21swapper/319:32:393
10126802142,7sleep30-21swapper/319:15:013
10126802142,7sleep30-21swapper/319:15:013
13329322132,7sleep30-21swapper/300:37:303
13329322132,7sleep30-21swapper/300:37:303
12482512132,6sleep30-21swapper/323:10:023
12322842132,7sleep30-21swapper/322:52:393
11985532132,6sleep30-21swapper/322:20:023
11890852132,7sleep30-21swapper/322:12:313
10733772133,6sleep30-21swapper/320:12:403
10404022132,7sleep30-21swapper/319:42:343
13234052122,6sleep30-21swapper/300:27:353
13234052122,6sleep30-21swapper/300:27:353
13135612122,6sleep30-21swapper/300:17:363
13084232122,6sleep30-21swapper/300:12:343
12980682122,5sleep30-21swapper/300:00:023
12922672122,6sleep30-21swapper/323:52:483
12830252122,5sleep30-21swapper/323:45:013
12784322122,6sleep30-21swapper/323:41:323
12636862122,6sleep30-21swapper/323:27:313
12580442122,5sleep30-21swapper/323:20:013
12571522122,6sleep30-21swapper/323:17:403
12430362122,6sleep30-21swapper/323:02:513
12338532122,6sleep30-21swapper/322:57:343
12093602122,6sleep30-21swapper/322:32:383
12038922122,6sleep30-21swapper/322:27:323
11794462122,6sleep30-21swapper/322:02:363
11596482122,6sleep30-21swapper/321:42:373
11487762122,5sleep30-21swapper/321:30:013
11292522122,6sleep30-21swapper/321:12:323
11238902122,5sleep30-21swapper/321:05:013
11233902123,5sleep30-21swapper/321:02:483
11142082122,5sleep30-21swapper/320:55:023
11123612123,6sleep30-21swapper/320:52:413
11000122122,6sleep30-21swapper/320:42:333
10991692122,5sleep30-21swapper/320:40:013
10893162122,6sleep30-21swapper/320:30:023
10885802122,6sleep30-21swapper/320:27:453
10786022122,6sleep30-21swapper/320:17:423
10645642122,6sleep30-21swapper/320:05:023
10591182122,6sleep30-21swapper/319:57:473
10262572122,6sleep30-21swapper/319:27:413
10152802122,6sleep30-21swapper/319:17:343
13278442112,6sleep30-21swapper/300:30:443
13278442112,6sleep30-21swapper/300:30:443
13218752112,5sleep30-21swapper/300:22:453
13030852113,5sleep30-21swapper/300:05:323
12977262112,6sleep30-21swapper/323:59:063
12733242112,5sleep30-21swapper/323:35:023
12684322112,6sleep30-21swapper/323:30:243
12435762112,6sleep30-21swapper/323:06:043
12185542112,6sleep30-21swapper/322:40:083
12135472112,5sleep30-21swapper/322:35:023
11939222112,6sleep30-21swapper/322:16:523
11838712112,6sleep30-21swapper/322:07:293
11736852112,5sleep30-21swapper/321:55:013
11688592112,6sleep30-21swapper/321:50:083
11688592112,6sleep30-21swapper/321:50:083
11639032112,6sleep30-21swapper/321:45:263
11440832112,6sleep30-21swapper/321:25:123
11392142112,6sleep30-21swapper/321:21:023
11339542112,6sleep30-21swapper/321:15:083
10803092112,5sleep30-21swapper/320:22:353
10598662112,5sleep30-21swapper/320:00:123
10504392112,5sleep30-21swapper/319:52:343
10450522112,6sleep30-21swapper/319:47:323
10348602112,6sleep30-21swapper/319:35:203
10203982112,6sleep30-21swapper/319:22:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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