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2026-06-24 - 16:51

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 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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackeslot4s.osadl.org (updated Wed Jun 24, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
980420996257,3cyclictest1250765-21kworker/u8:2+flush-259:011:34:592
980416996052,6cyclictest1110995-21cat09:15:001
980425995945,5cyclictest1068776-21latency_hist08:35:013
980425995753,3cyclictest965307-21kworker/u8:0+flush-259:008:30:013
980409995650,4cyclictest335557-21systemd-journal07:50:000
980425995450,3cyclictest1105394-21gpgv09:10:003
980416994942,5cyclictest1095096-21cat09:00:001
980425994337,4cyclictest335557-21systemd-journal12:14:593
980420994236,4cyclictest1105272-21apt-get09:10:012
980416994238,2cyclictest1167936-21kworker/u8:1+events_unbound10:20:201
980416994035,3cyclictest965307-21kworker/u8:0+events_unbound07:55:141
980416993935,3cyclictest1152660-21kworker/u8:2+events_unbound10:05:011
980425993834,3cyclictest1293074-21kworker/u8:3+flush-259:012:30:003
980425993834,3cyclictest1276522-21kworker/u8:2+flush-259:012:00:003
980425993834,3cyclictest1276522-21kworker/u8:2+flush-259:012:00:003
980409993833,4cyclictest1147315-21latency_hist09:50:010
980425993631,4cyclictest1042592-21apt-get08:10:003
980416993633,2cyclictest965307-21kworker/u8:0+events_unbound08:10:001
980416993532,2cyclictest1057598-21kworker/u8:2+events_unbound08:28:431
980416993531,3cyclictest1276522-21kworker/u8:2+events_unbound12:14:431
980416993531,3cyclictest1240488-21kworker/u8:0+events_unbound11:56:451
980416993531,3cyclictest1240488-21kworker/u8:0+events_unbound11:56:451
980416993530,3cyclictest1167936-21kworker/u8:1+events_unbound10:31:441
980416993530,3cyclictest1110863-21kworker/u8:1+events_unbound09:31:431
980425993429,3cyclictest1000945-21latency_hist07:30:003
980420993427,5cyclictest1266174-21latency_hist11:45:012
980416993431,2cyclictest1204000-21kworker/u8:3+flush-259:010:55:231
980416993431,2cyclictest1027143-21kworker/u8:3+flush-259:008:00:211
980416993430,3cyclictest1167936-21kworker/u8:1+events_unbound10:35:431
980425993328,3cyclictest1048409-21/usr/sbin/munin08:15:153
980409993327,5cyclictest1255007-21ntpq11:30:200
980425993228,3cyclictest335557-21systemd-journal09:24:593
980420993228,2cyclictest1229841-21kworker/u8:4+flush-259:011:10:162
980420993227,3cyclictest1057598-21kworker/u8:2+flush-259:008:35:172
980420993226,4cyclictest1214416-21gpgv10:55:002
980416993229,2cyclictest1276522-21kworker/u8:2+events_unbound12:00:241
980416993229,2cyclictest1266199-21kworker/u8:1+flush-259:012:05:201
980416993229,2cyclictest1027144-21kworker/u8:4+events_unbound08:33:431
980416993228,3cyclictest1229841-21kworker/u8:4+events_unbound11:16:431
980416993228,3cyclictest1152660-21kworker/u8:2+events_unbound10:53:421
980409993229,2cyclictest1240488-21kworker/u8:0+flush-259:012:09:590
980409993228,3cyclictest1073918-21kworker/u8:3+flush-259:009:55:000
980416993128,2cyclictest965307-21kworker/u8:0+flush-259:007:15:201
980416993127,2cyclictest1318898-21kworker/u8:0+flush-259:012:35:161
980416993126,3cyclictest1147338-21kworker/u8:0+flush-259:010:15:181
980416993126,3cyclictest1073918-21kworker/u8:3+flush-259:008:50:171
980416993125,4cyclictest1147576-21apt-get09:50:121
980409993126,4cyclictest1203972-21latency_hist10:45:010
980425993025,3cyclictest509-21rs:main3
980409993025,3cyclictest1037453-21kworker/u8:1+events_unbound08:15:010
980409993024,4cyclictest335557-21systemd-journal10:23:150
980409993023,5cyclictest1281658-21latency_hist12:00:010
980409993023,5cyclictest1281658-21latency_hist12:00:000
980420992923,4cyclictest1287413-21cp12:05:012
980416992926,2cyclictest1229841-21kworker/u8:4+flush-259:011:25:161
980416992925,2cyclictest990614-21kworker/u8:3+flush-259:007:40:001
980416992924,4cyclictest1100401-21apt-get09:05:131
980409992822,4cyclictest335557-21systemd-journal08:58:010
980425992724,2cyclictest1110863-21kworker/u8:1+flush-259:009:15:243
980425992721,4cyclictest1110840-21latency_hist09:15:013
980420992722,3cyclictest335557-21systemd-journal09:38:422
980416992724,2cyclictest1229841-21kworker/u8:4+events_unbound11:41:431
980416992721,4cyclictest1016576-21base6407:45:011
98042099260,24cyclictest1-21systemd09:00:012
980416992622,3cyclictest965307-21kworker/u8:0+flush-259:008:15:211
980416992622,2cyclictest1167936-21kworker/u8:1+flush-259:010:45:171
980416992621,3cyclictest1079318-21/usr/sbin/munin08:45:201
980409992620,4cyclictest335557-21systemd-journal09:20:430
980425992521,3cyclictest965307-21kworker/u8:0+flush-259:008:00:003
980416992522,2cyclictest1147338-21kworker/u8:0+events_unbound10:10:191
980416992521,3cyclictest1110863-21kworker/u8:1+events_unbound09:15:211
980416992521,3cyclictest1017057-21kworker/u8:1+flush-259:007:50:151
980416992519,4cyclictest1043276-21apt-get08:10:121
980409992520,3cyclictest1-21systemd12:15:000
980409992519,4cyclictest335557-21systemd-journal07:40:430
980409992519,4cyclictest1079084-21latency_hist08:45:010
980425992421,2cyclictest1167936-21kworker/u8:1+flush-259:010:35:133
980425992420,3cyclictest980581-21/usr/sbin/munin07:10:153
980420992421,2cyclictest1177853-21kworker/u8:3+flush-259:010:20:012
980420992418,4cyclictest1131903-21latency_hist09:35:002
980416992421,2cyclictest1240488-21kworker/u8:0+events_unbound11:35:431
980416992420,3cyclictest965307-21kworker/u8:0+flush-259:007:45:211
980416992419,3cyclictest1167936-21kworker/u8:1+events_unbound10:40:181
980409992421,2cyclictest965307-21kworker/u8:0+events_unbound07:30:150
980409992419,3cyclictest1266199-21kworker/u8:1+flush-259:012:25:160
980409992419,3cyclictest1204000-21kworker/u8:3+events_unbound11:00:210
980409992418,4cyclictest1027144-21kworker/u8:4+flush-259:008:45:210
980420992319,3cyclictest1276522-21kworker/u8:2+flush-259:012:15:132
980420992318,4cyclictest1208823-21sshd10:46:432
980416992320,2cyclictest1057598-21kworker/u8:2+flush-259:008:35:171
980416992319,3cyclictest1073918-21kworker/u8:3+events_unbound09:55:121
980416992318,3cyclictest1167936-21kworker/u8:1+flush-259:011:10:191
980409992316,5cyclictest1230380-21apt-get11:10:110
980409992315,6cyclictest1000073-21ntpq07:25:210
980409992315,6cyclictest1000073-21ntpq07:25:200
980425992219,2cyclictest1027144-21kworker/u8:4+events_unbound08:45:213
980425992218,3cyclictest1073918-21kworker/u8:3+flush-259:009:40:213
980420992218,3cyclictest990614-21kworker/u8:3+flush-259:007:40:172
980416992219,2cyclictest1073918-21kworker/u8:3+flush-259:009:40:421
980416992218,3cyclictest1204000-21kworker/u8:3+flush-259:011:00:241
980416992216,4cyclictest1313641-21cat12:30:011
980409992218,3cyclictest1110863-21kworker/u8:1+flush-259:009:30:170
980409992216,4cyclictest1271571-21/usr/sbin/munin11:50:170
980409992216,4cyclictest1147338-21kworker/u8:0+flush-259:010:00:010
980409992215,5cyclictest1067890-21ntpq08:30:210
980425992118,2cyclictest965307-21kworker/u8:0+flush-259:008:20:263
980425992118,2cyclictest1229841-21kworker/u8:4+flush-259:011:45:003
980425992116,4cyclictest1132165-21apt-get09:35:133
980420992116,3cyclictest1126738-21latency_hist09:30:002
980416992118,2cyclictest1167936-21kworker/u8:1+events_unbound11:30:191
980416992117,3cyclictest975284-21kworker/u8:2+flush-259:007:20:191
980416992117,3cyclictest1276522-21kworker/u8:2+flush-259:012:15:431
980409992117,3cyclictest1188532-21sh10:30:010
980409992117,3cyclictest1073918-21kworker/u8:3+flush-259:009:35:170
980409992116,4cyclictest1084525-21/usr/sbin/munin08:50:150
980409992116,3cyclictest1229841-21kworker/u8:4+flush-259:011:25:210
980409992115,4cyclictest335557-21systemd-journal10:09:550
980409992115,4cyclictest1301870-21ntpq12:15:200
980425992016,3cyclictest335557-21systemd-journal12:10:003
980425992016,3cyclictest1286893-21gpgv12:05:013
980409992017,2cyclictest1204660-21irqcore10:45:150
980409992015,3cyclictest1152660-21kworker/u8:2+flush-259:010:35:000
980409992013,5cyclictest1072977-21ntpq08:35:220
98040999201,18cyclictest509-21rs:main0
980420991914,4cyclictest1027144-21kworker/u8:4+flush-259:008:05:002
980420991914,3cyclictest1147338-21kworker/u8:0+flush-259:010:05:132
980420991913,4cyclictest1105494-21cat09:10:002
980416991915,3cyclictest1293074-21kworker/u8:3+events_unbound12:20:151
980416991915,3cyclictest1229841-21kworker/u8:4+flush-259:011:23:431
980416991914,4cyclictest1204000-21kworker/u8:3+events_unbound11:06:431
980409991915,3cyclictest1073918-21kworker/u8:3+flush-259:009:00:130
980409991914,4cyclictest1073918-21kworker/u8:3+flush-259:010:00:130
980409991913,4cyclictest1110863-21kworker/u8:1+flush-259:009:15:170
980425991816,1cyclictest0-21swapper/310:35:013
98042599180,17cyclictest1-21systemd11:45:423
980420991815,2cyclictest1297531-21cron12:15:002
980420991815,2cyclictest1068782-21munin-plugin-st08:35:002
980416991814,3cyclictest965307-21kworker/u8:0+flush-259:007:30:181
980416991814,3cyclictest1229841-21kworker/u8:4+flush-259:011:55:001
980416991814,3cyclictest1073918-21kworker/u8:3+events_unbound09:45:181
980416991813,3cyclictest1152660-21kworker/u8:2+flush-259:010:25:171
980409991815,2cyclictest1027144-21kworker/u8:4+flush-259:008:20:220
980409991811,5cyclictest1307106-21ntpq12:20:210
980425991715,1cyclictest1021977-21munin-plugin-st07:50:013
980425991710,5cyclictest1319133-21gpgv12:35:013
980420991714,2cyclictest1189211-21irqcore10:30:182
980420991714,2cyclictest1000944-21sh07:30:002
980420991714,2cyclictest1000944-21sh07:30:002
980420991713,3cyclictest1027144-21kworker/u8:4+flush-259:009:20:132
980416991714,2cyclictest1229841-21kworker/u8:4+events_unbound11:45:261
980416991714,2cyclictest1073918-21kworker/u8:3+events_unbound08:59:201
980409991714,2cyclictest60350irq/132-enp0s29f1:rx-012:39:470
980409991714,2cyclictest60350irq/132-enp0s29f1:rx-012:00:230
980409991714,1cyclictest0-21swapper/008:10:010
980409991713,3cyclictest1017057-21kworker/u8:1+events_unbound07:52:420
980425991613,2cyclictest1027144-21kworker/u8:4+flush-259:008:10:163
980425991612,3cyclictest1214461-21cat10:55:013
980420991613,2cyclictest965307-21kworker/u8:0+flush-259:008:25:002
980420991613,2cyclictest1215395-21irqcore10:55:142
980420991613,2cyclictest0-21swapper/208:20:002
980420991612,3cyclictest335557-21systemd-journal08:00:002
980420991611,4cyclictest335557-21systemd-journal07:55:002
980416991612,3cyclictest990614-21kworker/u8:3+events_unbound07:25:151
980416991612,3cyclictest990614-21kworker/u8:3+events_unbound07:25:151
980409991614,1cyclictest60350irq/132-enp0s29f1:rx-011:35:300
980409991614,1cyclictest60350irq/132-enp0s29f1:rx-010:15:140
980409991613,2cyclictest60350irq/132-enp0s29f1:rx-008:00:180
980409991613,2cyclictest60350irq/132-enp0s29f1:rx-007:20:240
980409991612,3cyclictest60350irq/132-enp0s29f1:rx-011:45:210
980409991612,3cyclictest1293074-21kworker/u8:3+events_unbound12:30:220
980409991611,1cyclictest1240453-21idleruntime-cro11:19:590
980425991512,2cyclictest1182532-21ntp_offset10:20:213
980425991512,2cyclictest1178219-21sh10:20:003
980425991512,1cyclictest0-21swapper/307:30:003
980425991511,3cyclictest965307-21kworker/u8:0+flush-259:007:15:243
980425991510,4cyclictest1095208-21cp09:00:003
980425991510,3cyclictest335557-21systemd-journal11:20:003
980420991512,2cyclictest1182901-21unixbench_multi10:20:242
980420991511,3cyclictest1240488-21kworker/u8:0+flush-259:011:40:002
980420991511,3cyclictest1027144-21kworker/u8:4+flush-259:008:45:262
980416991512,2cyclictest1309249-21kthreadcore12:25:161
980416991512,2cyclictest1073918-21kworker/u8:3+events_unbound09:35:281
980416991511,3cyclictest1073918-21kworker/u8:3+events_unbound09:27:231
980416991511,3cyclictest1027144-21kworker/u8:4+events_unbound08:41:351
980409991513,1cyclictest60350irq/132-enp0s29f1:rx-009:41:590
980409991513,1cyclictest60350irq/132-enp0s29f1:rx-007:55:250
980409991512,2cyclictest60350irq/132-enp0s29f1:rx-011:07:480
980409991512,2cyclictest60350irq/132-enp0s29f1:rx-010:50:090
980409991512,2cyclictest1266176-21turbostat11:44:590
980409991511,2cyclictest0-21swapper/009:10:010
98042599149,4cyclictest1001180-21/usr/sbin/munin07:30:133
980425991411,2cyclictest1229841-21kworker/u8:4+flush-259:011:30:003
980425991411,2cyclictest1011507-21apt-get07:40:133
980420991411,2cyclictest1266199-21kworker/u8:1+events_unbound12:35:012
980420991410,3cyclictest1293074-21kworker/u8:3+flush-259:012:28:132
980420991410,3cyclictest1204000-21kworker/u8:3+flush-259:011:05:152
98040999149,4cyclictest1152660-21kworker/u8:2+flush-259:010:55:190
980409991413,1cyclictest60350irq/132-enp0s29f1:rx-009:29:000
980409991412,1cyclictest60350irq/132-enp0s29f1:rx-010:38:170
980409991411,2cyclictest60350irq/132-enp0s29f1:rx-009:12:120
980409991410,3cyclictest1057598-21kworker/u8:2+flush-259:008:25:190
980409991410,2cyclictest990624-21turbostat07:20:000
98042599139,3cyclictest1152427-21latency_hist09:55:013
980425991311,1cyclictest0-21swapper/311:05:013
980425991310,2cyclictest965307-21kworker/u8:0+flush-259:007:50:153
980425991310,2cyclictest1147338-21kworker/u8:0+flush-259:010:05:263
980425991310,2cyclictest1075172-21kthreadcore08:40:173
980425991310,1cyclictest0-21swapper/311:39:593
98042099139,3cyclictest1240488-21kworker/u8:0+flush-259:011:47:122
980420991311,1cyclictest0-21swapper/211:55:002
980420991311,1cyclictest0-21swapper/211:30:002
980420991310,2cyclictest0-21swapper/210:00:002
980420991310,1cyclictest0-21swapper/210:25:152
98041699139,3cyclictest965307-21kworker/u8:0+events_unbound08:23:331
980409991311,2cyclictest61150irq/133-enp0s29f1:tx-007:35:170
980409991310,2cyclictest60350irq/132-enp0s29f1:rx-011:24:130
98042599129,2cyclictest1073458-21unixbench_singl08:35:263
98042599128,3cyclictest1173081-21munin-plugin-st10:15:003
98042599128,3cyclictest1157851-21/usr/sbin/munin10:00:193
98042599127,4cyclictest1235352-21latency_hist11:15:013
98042599126,4cyclictest1157618-21latency_hist10:00:003
980425991210,1cyclictest0-21swapper/308:05:013
98042099129,2cyclictest1137406-21cpuspeed_turbos09:40:122
98042099129,2cyclictest1043341-21cpuspeed_turbos08:10:132
98042099129,1cyclictest0-21swapper/210:40:002
98042099128,3cyclictest1147338-21kworker/u8:0+events_unbound09:55:012
98042099128,3cyclictest1011030-21journal-offline07:37:422
98041699128,3cyclictest1152660-21kworker/u8:2+events_unbound10:03:071
980409991211,1cyclictest60350irq/132-enp0s29f1:rx-008:15:040
980409991211,1cyclictest60350irq/132-enp0s29f1:rx-007:10:320
98042599118,2cyclictest1235866-21fschecks_time11:15:153
98042599117,3cyclictest1319203-21base6412:35:013
98042599116,4cyclictest1093675-21ntpq08:55:203
98042099119,1cyclictest0-21swapper/207:35:012
98042099118,2cyclictest1168590-21irqcore10:10:152
98042099118,2cyclictest1074355-21fschecks_count08:40:142
98042099117,3cyclictest1204000-21kworker/u8:3+flush-259:011:00:262
98042099117,2cyclictest1021095-21ntpq07:45:212
98042099111,8cyclictest1281668-21awk12:00:002
98042099111,8cyclictest1281668-21awk11:59:592
98042099108,1cyclictest1158889-21kthreadcore10:00:172
98042099106,3cyclictest1276522-21kworker/u8:2+flush-259:012:00:132
98042099106,3cyclictest1201386-21tail10:40:182
98042099105,4cyclictest1308025-21cat12:25:012
9804209997,1cyclictest0-21swapper/207:20:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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