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2026-08-31 - 09:38

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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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