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2026-06-11 - 23:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackeslot4s.osadl.org (updated Thu Jun 11, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1246649995249,2cyclictest1397902-21kworker/u8:0+flush-259:009:45:011
1246649994744,2cyclictest1360430-21kworker/u8:4+flush-259:009:15:211
1246649994440,3cyclictest1428838-21kworker/u8:1+flush-259:010:15:221
1246644994336,5cyclictest1453633-21ntpq10:25:200
1246652994239,2cyclictest1434684-21kworker/u8:0+flush-259:011:25:152
1246649994238,3cyclictest1434684-21kworker/u8:0+flush-259:010:25:251
1246649994235,5cyclictest1500095-21ntpq11:10:201
1246649994235,5cyclictest1500095-21ntpq11:10:201
1246649994035,3cyclictest335557-21systemd-journal07:20:181
1246649994034,4cyclictest335557-21systemd-journal09:23:201
1246655993934,3cyclictest335557-21systemd-journal08:32:213
1246649993936,2cyclictest1553964-21kworker/u8:3+flush-259:012:15:211
1246644993933,4cyclictest1553964-21kworker/u8:3+flush-259:012:35:170
1246652993832,4cyclictest1338705-21ntpq08:35:222
1246649993835,2cyclictest1532159-21kworker/u8:2+flush-259:012:05:211
1246652993733,3cyclictest1324096-21kworker/u8:1+flush-259:008:30:212
1246649993734,2cyclictest1324096-21kworker/u8:1+flush-259:008:25:171
1246649993734,2cyclictest1282796-21kworker/u8:0+flush-259:008:25:001
1246649993633,2cyclictest1532159-21kworker/u8:2+flush-259:012:00:211
1246644993631,3cyclictest1192940-21kworker/u8:1+flush-259:007:50:180
1246644993629,5cyclictest1427924-21ntpq10:00:220
1246652993532,2cyclictest1387119-21kworker/u8:3+flush-259:009:45:152
1246649993530,4cyclictest1282756-21latency_hist07:45:001
1246644993528,5cyclictest1567595-21ntpq12:15:190
1246652993430,3cyclictest1397902-21kworker/u8:0+flush-259:009:50:172
1246652993429,4cyclictest1360430-21kworker/u8:4+events_unbound09:10:212
1246644993429,3cyclictest1490922-21/usr/sbin/munin11:05:160
1246655993327,4cyclictest335557-21systemd-journal08:55:003
1246652993329,2cyclictest1365434-21gpgv09:05:002
1246649993327,4cyclictest335557-21systemd-journal08:45:201
1246644993329,3cyclictest1532159-21kworker/u8:2+events_unbound12:10:170
1246655993227,3cyclictest335557-21systemd-journal11:31:203
1246652993229,2cyclictest1412927-21kworker/u8:4+events_unbound09:55:202
1246652993229,2cyclictest1192940-21kworker/u8:1+flush-259:007:14:512
1246652993228,3cyclictest1434684-21kworker/u8:0+events_unbound11:21:222
1246652993228,3cyclictest1192940-21kworker/u8:1+flush-259:007:30:012
1246649993228,3cyclictest1392287-21/usr/sbin/munin09:30:121
1246644993228,3cyclictest1532159-21kworker/u8:2+flush-259:012:05:240
1246644993226,4cyclictest1475530-21apt-get10:50:120
1246655993128,2cyclictest1434684-21kworker/u8:0+flush-259:010:20:213
1246655993126,3cyclictest1553964-21kworker/u8:3+events_unbound12:35:203
1246655993126,3cyclictest1282796-21kworker/u8:0+flush-259:008:15:203
1246655993124,4cyclictest335557-21systemd-journal09:05:003
1246649993127,3cyclictest1459760-21kworker/u8:4+flush-259:010:55:001
1246649993127,3cyclictest1360468-21apt-get09:00:121
1246655993025,4cyclictest1434684-21kworker/u8:0+flush-259:010:45:203
1246655993025,4cyclictest1192940-21kworker/u8:1+flush-259:007:45:253
1246655993024,4cyclictest335557-21systemd-journal11:20:003
1246655993024,4cyclictest1516675-21kworker/u8:4+flush-259:011:40:013
1246652993027,2cyclictest1434684-21kworker/u8:0+flush-259:010:30:202
1246652993026,3cyclictest1434684-21kworker/u8:0+events_unbound10:20:262
1246649993027,3cyclictest1516675-21kworker/u8:4+flush-259:011:35:431
1246649993027,2cyclictest1434684-21kworker/u8:0+flush-259:011:30:211
1246649993027,2cyclictest1434684-21kworker/u8:0+flush-259:010:20:221
1246649993027,2cyclictest1387119-21kworker/u8:3+flush-259:010:00:201
1246649993027,2cyclictest1360430-21kworker/u8:4+events_unbound09:25:221
1246649993027,2cyclictest1293291-21kworker/u8:3+flush-259:008:10:211
1246649993027,2cyclictest1282796-21kworker/u8:0+flush-259:008:40:211
1246652992926,2cyclictest1516675-21kworker/u8:4+flush-259:011:35:232
1246652992926,2cyclictest1428838-21kworker/u8:1+flush-259:010:10:212
1246652992925,3cyclictest1434684-21kworker/u8:0+flush-259:011:00:262
1246652992925,3cyclictest1192940-21kworker/u8:1+events_unbound07:30:212
1246649992926,2cyclictest1324096-21kworker/u8:1+events_unbound08:50:221
1246649992924,4cyclictest335557-21systemd-journal11:05:341
1246655992823,4cyclictest1542278-21gpgv11:55:013
1246652992825,2cyclictest1212525-21kworker/u8:0+flush-259:007:19:512
1246652992825,2cyclictest1192940-21kworker/u8:1+flush-259:008:05:232
1246652992824,3cyclictest1434684-21kworker/u8:0+flush-259:010:25:272
1246652992824,3cyclictest1434684-21kworker/u8:0+events_unbound11:45:002
1246652992824,3cyclictest1282796-21kworker/u8:0+flush-259:008:55:212
1246649992825,2cyclictest1434684-21kworker/u8:0+flush-259:010:55:201
1246649992825,2cyclictest1387119-21kworker/u8:3+flush-259:009:55:211
1246649992825,2cyclictest1192940-21kworker/u8:1+flush-259:008:05:211
1246649992824,3cyclictest1469233-21ntpq10:40:221
1246649992823,4cyclictest1303379-21latency_hist08:05:001
1246644992824,3cyclictest1532159-21kworker/u8:2+flush-259:011:55:230
1246644992824,3cyclictest1359320-21kworker/u8:2+flush-259:009:35:000
1246655992720,5cyclictest1547885-21latency_hist12:00:013
1246652992721,4cyclictest1283019-21apt-get07:45:102
1246649992724,2cyclictest1496506-21kworker/u8:3+events_unbound11:40:201
1246649992724,2cyclictest1480636-21kworker/u8:1+events_unbound11:00:231
1246649992724,2cyclictest1282796-21kworker/u8:0+flush-259:008:15:221
1246649992724,2cyclictest1212525-21kworker/u8:0+flush-259:007:15:221
1246649992723,3cyclictest335557-21systemd-journal11:23:201
1246649992723,3cyclictest1460002-21apt-get10:35:121
1246649992723,3cyclictest1434684-21kworker/u8:0+events_unbound11:45:401
1246652992623,2cyclictest1459760-21kworker/u8:4+events_unbound10:50:222
1246652992622,3cyclictest1360430-21kworker/u8:4+flush-259:009:15:252
1246649992623,2cyclictest1553964-21kworker/u8:3+flush-259:012:30:181
1246649992623,2cyclictest1428838-21kworker/u8:1+flush-259:010:05:211
1246644992621,4cyclictest335557-21systemd-journal09:01:200
1246644992621,3cyclictest1192940-21kworker/u8:1+flush-259:007:25:010
1246652992522,2cyclictest1532159-21kworker/u8:2+flush-259:012:00:202
1246652992520,4cyclictest1434684-21kworker/u8:0+flush-259:011:50:162
1246652992518,5cyclictest1520699-21ntpq11:30:202
1246649992522,2cyclictest1532159-21kworker/u8:2+events_unbound12:13:211
1246649992522,2cyclictest1434684-21kworker/u8:0+events_unbound11:55:191
1246644992521,3cyclictest1324096-21kworker/u8:1+flush-259:008:45:230
1246644992520,4cyclictest1266431-21ntpq07:25:190
1246644992520,3cyclictest1454790-21/usr/sbin/munin10:30:180
1246655992420,3cyclictest1526760-21kworker/u8:1+flush-259:012:25:213
1246655992420,3cyclictest1434684-21kworker/u8:0+flush-259:011:10:243
1246655992420,3cyclictest1434684-21kworker/u8:0+flush-259:011:10:243
1246655992419,4cyclictest1212525-21kworker/u8:0+flush-259:007:10:213
1246652992421,2cyclictest1434684-21kworker/u8:0+flush-259:011:10:242
1246652992421,2cyclictest1434684-21kworker/u8:0+flush-259:011:10:232
1246652992421,2cyclictest1324096-21kworker/u8:1+events_unbound08:25:132
1246652992420,3cyclictest1532159-21kworker/u8:2+flush-259:012:20:192
1246652992420,3cyclictest1339585-21kworker/u8:2+events_unbound08:40:142
1246652992420,3cyclictest1282796-21kworker/u8:0+events_unbound09:05:292
1246652992420,3cyclictest1282796-21kworker/u8:0+events_unbound08:10:142
1246649992420,3cyclictest1262143-21kworker/u8:2+events_unbound07:53:181
1246644992420,3cyclictest1428838-21kworker/u8:1+flush-259:010:10:210
1246655992318,4cyclictest1360430-21kworker/u8:4+events_unbound09:10:133
1246655992317,4cyclictest335557-21systemd-journal10:05:003
1246652992320,2cyclictest1262143-21kworker/u8:2+events_unbound07:35:202
1246652992319,3cyclictest1434684-21kworker/u8:0+flush-259:011:55:152
1246652992319,3cyclictest1428838-21kworker/u8:1+events_unbound10:06:212
1246652992319,3cyclictest1359320-21kworker/u8:2+events_unbound09:35:192
1246652992319,3cyclictest1192940-21kworker/u8:1+events_unbound08:00:182
1246652992318,3cyclictest1359320-21kworker/u8:2+flush-259:009:30:162
1246649992320,2cyclictest1480636-21kworker/u8:1+flush-259:011:15:171
1246649992319,3cyclictest335557-21systemd-journal12:27:211
1246644992320,2cyclictest1387119-21kworker/u8:3+events_unbound09:45:240
1246644992319,3cyclictest1480636-21kworker/u8:1+flush-259:011:25:200
1246644992319,3cyclictest1434684-21kworker/u8:0+flush-259:011:45:230
1246644992319,2cyclictest1262143-21kworker/u8:2+flush-259:007:40:150
1246644992317,5cyclictest335557-21systemd-journal09:40:000
1246655992218,3cyclictest1434684-21kworker/u8:0+events_unbound11:45:203
1246655992218,3cyclictest1428838-21kworker/u8:1+events_unbound10:40:183
1246652992219,2cyclictest1324096-21kworker/u8:1+flush-259:008:50:242
1246652992218,3cyclictest1532159-21kworker/u8:2+events_unbound12:12:212
1246652992218,3cyclictest1293325-21apt-get07:55:112
1246652992215,5cyclictest1495844-21latency_hist11:10:002
1246649992219,2cyclictest1397902-21kworker/u8:0+flush-259:009:50:111
1246649992219,2cyclictest1192940-21kworker/u8:1+flush-259:007:25:171
1246649992217,4cyclictest1412767-21apt-get09:49:171
1246644992217,4cyclictest335557-21systemd-journal09:12:210
1246644992215,5cyclictest1525879-21ntpq11:35:210
1246644992215,5cyclictest1317979-21ntpq08:15:190
1246644992215,5cyclictest1277622-21latency_hist07:40:010
124664499221,20cyclictest1-21systemd10:45:290
1246649992118,2cyclictest1434684-21kworker/u8:0+events_unbound10:33:201
1246649992118,2cyclictest1282796-21kworker/u8:0+events_unbound08:37:211
1246644992118,2cyclictest1553964-21kworker/u8:3+flush-259:012:30:210
1246644992117,3cyclictest1434684-21kworker/u8:0+flush-259:010:55:220
1246655992016,3cyclictest1359320-21kworker/u8:2+events_unbound09:30:203
1246655992016,3cyclictest1324096-21kworker/u8:1+flush-259:008:50:243
1246655992014,4cyclictest1397902-21kworker/u8:0+flush-259:009:40:163
1246652992017,2cyclictest2971-21cron11:20:002
1246652992017,2cyclictest1293291-21kworker/u8:3+flush-259:008:16:252
1246652992016,3cyclictest1526760-21kworker/u8:1+flush-259:012:10:002
1246652992016,3cyclictest1428838-21kworker/u8:1+events_unbound10:35:172
1246649992017,2cyclictest1262143-21kworker/u8:2+events_unbound07:37:191
1246644992013,5cyclictest1537513-21diskstats11:50:120
1246655991915,3cyclictest1192940-21kworker/u8:1+flush-259:007:50:243
1246652991917,1cyclictest1360430-21kworker/u8:4+events_unbound09:25:162
1246652991915,3cyclictest1526760-21kworker/u8:1+flush-259:012:25:182
1246652991915,3cyclictest1293291-21kworker/u8:3+flush-259:008:20:202
1246649991915,3cyclictest1428838-21kworker/u8:1+events_unbound10:11:221
1246649991915,3cyclictest1282796-21kworker/u8:0+flush-259:009:05:201
1246649991915,2cyclictest0-21swapper/107:35:001
1246649991914,4cyclictest1516441-21latency_hist11:30:001
1246649991913,5cyclictest1333482-21ntpq08:30:201
1246644991914,3cyclictest1192940-21kworker/u8:1+flush-259:007:55:210
1246655991815,2cyclictest0-21swapper/310:30:003
1246655991814,3cyclictest1359320-21kworker/u8:2+flush-259:009:20:163
1246655991813,4cyclictest507-21in:imuxsock11:45:003
1246655991813,3cyclictest335557-21systemd-journal11:25:203
1246652991815,2cyclictest1459760-21kworker/u8:4+flush-259:010:58:572
1246652991815,2cyclictest1324096-21kworker/u8:1+events_unbound08:45:192
1246652991814,3cyclictest1288192-21/usr/sbin/munin07:50:152
1246649991815,2cyclictest1360430-21kworker/u8:4+flush-259:009:10:211
1246649991815,2cyclictest1192940-21kworker/u8:1+events_unbound07:45:131
1246649991814,3cyclictest1434684-21kworker/u8:0+events_unbound11:54:211
1246644991813,3cyclictest1397902-21kworker/u8:0+flush-259:009:50:520
1246655991714,2cyclictest1377454-21kthreadcore09:15:173
1246655991714,2cyclictest1282796-21kworker/u8:0+flush-259:009:05:423
1246655991713,3cyclictest1192940-21kworker/u8:1+flush-259:007:55:253
1246655991712,4cyclictest2109693-21snmpd10:10:123
1246652991714,2cyclictest1553964-21kworker/u8:3+events_unbound12:15:152
1246652991713,3cyclictest1397902-21kworker/u8:0+events_unbound09:40:192
1246649991713,3cyclictest1526760-21kworker/u8:1+events_unbound12:38:551
1246649991712,4cyclictest1324096-21kworker/u8:1+flush-259:008:55:411
1246649991712,3cyclictest1397500-21apt-get09:35:121
1246649991710,5cyclictest1251758-21latency_hist07:15:011
1246655991613,2cyclictest1510447-21ntp_kernel_pll_11:20:213
1246655991611,3cyclictest0-21swapper/311:00:003
1246652991613,2cyclictest1262143-21kworker/u8:2+flush-259:007:40:252
1246652991612,3cyclictest1553964-21kworker/u8:3+flush-259:012:33:302
1246652991612,3cyclictest1192940-21kworker/u8:1+flush-259:007:20:112
1246644991614,1cyclictest60350irq/132-enp0s29f1:rx-011:03:280
1246644991614,1cyclictest60350irq/132-enp0s29f1:rx-010:40:260
1246644991614,1cyclictest60350irq/132-enp0s29f1:rx-009:20:210
1246644991614,1cyclictest60350irq/132-enp0s29f1:rx-008:50:150
1246644991614,1cyclictest60350irq/132-enp0s29f1:rx-008:05:230
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-011:20:190
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-011:10:120
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-011:10:120
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-009:41:290
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-008:28:390
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-008:01:270
1246644991613,2cyclictest60350irq/132-enp0s29f1:rx-007:10:250
1246644991613,2cyclictest1192940-21kworker/u8:1+events_unbound07:45:190
1246644991612,3cyclictest1429077-21apt-get10:05:110
1246644991611,4cyclictest335557-21systemd-journal11:16:210
1246655991512,2cyclictest509-21rs:main3
1246655991511,3cyclictest1553964-21kworker/u8:3+events_unbound12:15:003
1246652991513,2cyclictest1588939-21kworker/u8:0+events_unbound12:39:562
1246652991513,2cyclictest1428838-21kworker/u8:1+events_unbound10:40:262
1246652991512,3cyclictest1387119-21kworker/u8:3+events_unbound10:00:252
1246652991511,3cyclictest1428838-21kworker/u8:1+flush-259:010:18:562
1246652991511,3cyclictest1381351-21kworker/u8:0+events_unbound09:24:222
1246649991511,3cyclictest1192940-21kworker/u8:1+events_unbound07:58:041
1246644991513,1cyclictest60350irq/132-enp0s29f1:rx-010:35:230
1246644991513,1cyclictest60350irq/132-enp0s29f1:rx-008:55:150
1246644991513,1cyclictest60350irq/132-enp0s29f1:rx-008:12:130
1246644991512,2cyclictest1324096-21kworker/u8:1+flush-259:008:35:160
1246644991511,2cyclictest60350irq/132-enp0s29f1:rx-008:40:120
1246644991511,1cyclictest60350irq/132-enp0s29f1:rx-010:15:150
1246655991411,2cyclictest0-21swapper/309:50:013
1246655991410,3cyclictest1282796-21kworker/u8:0+flush-259:008:10:153
124664499149,1cyclictest60350irq/132-enp0s29f1:rx-009:25:220
1246644991413,1cyclictest60350irq/132-enp0s29f1:rx-007:33:180
1246644991412,1cyclictest60350irq/132-enp0s29f1:rx-012:25:190
1246644991412,1cyclictest60350irq/132-enp0s29f1:rx-011:40:180
1246644991412,1cyclictest60350irq/132-enp0s29f1:rx-009:55:480
1246644991412,1cyclictest60350irq/132-enp0s29f1:rx-008:20:200
1246644991411,2cyclictest60350irq/132-enp0s29f1:rx-007:15:120
1246644991410,3cyclictest1434684-21kworker/u8:0+flush-259:010:20:240
124665599139,3cyclictest1387232-21cpuspeed_turbos09:25:133
124665599138,3cyclictest1262143-21kworker/u8:2+flush-259:007:30:173
1246655991310,2cyclictest1340853-21tr08:40:183
1246652991310,2cyclictest1434684-21kworker/u8:0+events_unbound11:45:232
1246644991311,1cyclictest60350irq/132-enp0s29f1:rx-012:00:160
1246644991311,1cyclictest60350irq/132-enp0s29f1:rx-009:15:150
1246644991311,1cyclictest60350irq/132-enp0s29f1:rx-008:30:010
124665599129,2cyclictest1475596-21cpuspeed_turbos10:50:123
124665599129,2cyclictest1413635-21cpuspeed_turbos09:50:123
124665599129,2cyclictest0-21swapper/309:55:183
124665599128,3cyclictest1434684-21kworker/u8:0+flush-259:011:05:213
124665599125,5cyclictest1553259-21/usr/sbin/munin12:05:133
124664499129,2cyclictest60350irq/132-enp0s29f1:rx-012:20:120
1246644991210,1cyclictest60350irq/132-enp0s29f1:rx-011:30:440
124665599119,1cyclictest0-21swapper/310:30:143
124665599118,2cyclictest1548563-21irqcore12:00:183
124665599118,2cyclictest1257444-21uniq07:20:123
124665599118,1cyclictest0-21swapper/308:05:183
124665599117,3cyclictest1293291-21kworker/u8:3+events_unbound08:20:233
124665599116,3cyclictest1434684-21kworker/u8:0+flush-259:011:05:003
124665599104,4cyclictest490-21dbus-daemon12:35:003
12466559996,2cyclictest1272969-21fschecks_time07:35:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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