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2026-08-08 - 15:02

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 Sat Aug 08, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114747921480,2chrt575-21kworker/3:2+events08:53:063
10474742890,4chrt30-21ksoftirqd/107:15:031
11635442870,0sleep0201rcuc/009:12:540
10491782830,4sleep30-21swapper/307:17:533
10993262750,2chrt281rcuc/108:07:541
1041313995143,6cyclictest275-21systemd-journal08:50:011
1041313995143,6cyclictest275-21systemd-journal08:50:001
10900242490,2chrt471rcuc/307:57:533
1041313994942,5cyclictest1207588-21/usr/sbin/munin09:58:041
1041310994637,7cyclictest1301828-21apt-get11:30:000
1041313994434,7cyclictest275-21systemd-journal07:57:491
1041310994434,7cyclictest275-21systemd-journal10:45:010
1041317994236,4cyclictest1132608-21gpgv08:40:002
1041313994131,7cyclictest275-21systemd-journal11:23:111
1041310994132,7cyclictest275-21systemd-journal08:30:000
1041310994032,6cyclictest1366110-21grep12:33:060
1041310993931,6cyclictest1307748-21diskstats11:37:520
1041317993820,16cyclictest1251866-21unixbench_multi10:38:062
1041313993832,4cyclictest275-21systemd-journal07:48:101
1041313993827,8cyclictest275-21systemd-journal12:26:401
13692622370,3sleep30-21swapper/312:37:563
1041317993713,8cyclictest1070540-21seq07:37:562
1041313993728,6cyclictest1301824-21latency_hist11:30:011
1041310993727,7cyclictest275-21systemd-journal12:10:000
1041313993631,4cyclictest1327024-21kworker/u8:1+events_unbound12:00:011
1041313993626,8cyclictest275-21systemd-journal09:24:121
1041310993627,7cyclictest1350736-21ntpq12:17:580
1041310993627,6cyclictest1082899-21sshd07:48:100
1041317993523,11cyclictest1282712-21cpuspeed_turbos11:12:502
1041317993516,2cyclictest0-21swapper/207:45:012
1041313993529,4cyclictest275-21systemd-journal10:08:121
1041313993526,6cyclictest1226498-21ntpq10:13:011
1041310993526,7cyclictest1227904-21diskstats10:17:490
1041310993525,8cyclictest1048833-21diskstats07:17:500
1041317993421,12cyclictest1171633-21tail09:17:582
1041317993419,13cyclictest1218000-21cpuspeed_turbos10:07:472
1041317993418,2cyclictest1148374-21cpuspeed_turbos08:57:482
1041313993430,3cyclictest1339317-21kthreadcore12:07:561
1041310993421,10cyclictest275-21systemd-journal11:45:000
10410202343,6sleep10-21swapper/107:08:171
1041317993317,2cyclictest0-21swapper/210:45:002
1041317993311,7cyclictest1247248-21date10:35:012
1041313993224,6cyclictest1351946-21/usr/sbin/munin12:22:591
1041313993224,6cyclictest1053562-21apt-get07:22:461
1041313993223,7cyclictest1336711-21latency_hist12:05:011
1041310993228,3cyclictest1152478-21kworker/u8:2+events_unbound12:25:480
1041310993226,4cyclictest1152478-21kworker/u8:2+events_unbound11:00:000
1041310993224,5cyclictest1083296-21kworker/u8:1+flush-8:008:18:060
1041310993218,10cyclictest275-21systemd-journal07:44:100
1041317993115,3cyclictest1083571-21aten2_r5power_e07:52:472
1041317993115,2cyclictest0-21swapper/207:15:002
1041317993114,3cyclictest1192016-21unixbench_multi09:38:062
1041313993128,2cyclictest1043851-21kthreadcore07:12:501
1041313993126,4cyclictest1083296-21kworker/u8:1+flush-8:008:52:511
1041310993127,2cyclictest1062208-21needreboot07:27:580
1041310993127,2cyclictest1062208-21needreboot07:27:580
1041310993125,4cyclictest1148156-21apt-get08:57:450
1041310993125,3cyclictest1192973-21cpuspeed_turbos09:42:480
1041310993124,5cyclictest1053537-21/usr/sbin/munin07:23:040
1041310993122,7cyclictest1286236-21ntpq11:12:590
1041310993122,6cyclictest1282036-21latency_hist11:10:000
104131799303,8cyclictest1182842-21apt-get09:32:452
104131799302,8cyclictest1351972-21apt-get12:22:492
1041317993010,7cyclictest1202729-21cut09:52:472
1041310993024,4cyclictest1366778-21apt-get12:37:460
1041310993024,4cyclictest1197721-21apt-get09:47:460
1041310993024,4cyclictest1197721-21apt-get09:47:460
1041310993021,7cyclictest1345825-21ntpq12:13:000
1041310993020,7cyclictest1291930-21latency_hist11:20:010
104131099300,28cyclictest1247021-21unin-run10:35:000
1041317992915,2cyclictest1098420-21aten2_r5power_e08:07:482
1041313992926,2cyclictest1168669-21irqrtprio09:17:541
1041313992925,3cyclictest1317692-21fschecks_count11:47:491
1041313992923,5cyclictest993669-21kworker/u8:2+flush-8:007:52:501
1041313992923,4cyclictest1361843-21apt-get12:32:471
1041313992922,5cyclictest1132568-21latency_hist08:40:001
1041313992920,6cyclictest1127659-21latency_hist08:35:011
1041313992918,9cyclictest1326047-21ntpq11:52:591
1041310992923,4cyclictest1208536-21kthreadcore09:57:540
1041310992922,5cyclictest1067161-21needreboot07:32:570
1041317992822,4cyclictest1217075-21unixbench_multi10:03:052
1041317992815,2cyclictest0-21swapper/208:43:042
1041313992823,3cyclictest1152478-21kworker/u8:2+flush-8:011:38:051
1041310992823,3cyclictest1072119-21needreboot07:37:580
1041317992724,2cyclictest1177945-21aten2_r5power_e09:27:482
1041317992724,2cyclictest1147491-21unixbench_singl08:53:062
1041313992722,4cyclictest1058063-21kworker/u8:1+flush-8:007:32:501
1041313992721,4cyclictest1242483-21apt-get10:32:471
1041313992720,5cyclictest1192060-21grep09:38:061
1041313992718,7cyclictest275-21systemd-journal09:53:121
1041310992723,2cyclictest0-21swapper/009:30:000
1041310992722,4cyclictest1083296-21kworker/u8:1+flush-8:008:02:510
1041310992722,3cyclictest1327522-21fschecks_count11:57:510
1041310992722,3cyclictest1084045-21irqcore07:52:520
1041310992719,5cyclictest1045435-21ntpq07:12:530
10409982273,8sleep20-21swapper/207:08:022
1041317992623,2cyclictest1052821-21unixbench_multi07:18:052
1041317992614,2cyclictest0-21swapper/208:20:232
1041313992623,2cyclictest1272116-21sendmail11:00:001
1041313992621,3cyclictest0-21swapper/109:27:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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