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2026-05-18 - 00:16

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 Sun May 17, 2026 12:44:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
787898993731,4cyclictest922943-21apt-get09:20:111
787894993734,2cyclictest871026-21kworker/u8:2+flush-259:008:30:240
787902993629,5cyclictest1094375-21latency_hist12:05:012
787902993430,3cyclictest1016256-21kworker/u8:1+flush-259:011:10:272
787902993328,3cyclictest938177-21latency_hist09:35:002
787904993225,5cyclictest953661-21latency_hist09:50:003
787902993127,3cyclictest1068230-21gpgv11:39:592
787894993126,4cyclictest1042257-21cp11:15:020
787894992926,2cyclictest1016501-21apt-get10:50:100
787898992824,3cyclictest839802-21apt-get08:00:161
787898992723,3cyclictest1079136-21apt-get11:50:111
787904992516,6cyclictest875332-21ntpq08:30:213
787902992521,3cyclictest881688-21kworker/u8:5+flush-259:009:15:172
787894992519,4cyclictest1078868-21latency_hist11:50:000
787904992419,4cyclictest943601-21apt-get09:40:143
787898992418,4cyclictest886604-21latency_hist08:45:021
787904992316,4cyclictest974142-21apt-get10:10:003
78790299239,6cyclictest876235-21munin-run08:35:012
787904992217,4cyclictest990045-21kworker/u8:2+flush-259:011:00:173
787894992217,3cyclictest252-21systemd-journal11:10:000
787904992115,4cyclictest1000351-21apt-get10:35:003
787904992114,5cyclictest927819-21latency_hist09:25:003
787904992114,5cyclictest845308-21cp08:05:023
787902992117,3cyclictest990045-21kworker/u8:2+flush-259:011:00:262
787902992115,4cyclictest839524-21awk08:00:002
787902992110,3cyclictest990016-21sh10:25:012
787898992116,4cyclictest974142-21apt-get10:10:001
787898992116,3cyclictest850625-21apt-get08:10:131
787894992116,4cyclictest1073699-21latency_hist11:45:010
787904992016,3cyclictest912350-21kworker/u8:1+flush-259:010:20:283
787904992015,3cyclictest990045-21kworker/u8:2+events_unbound10:35:173
787904992015,3cyclictest917756-21apt-get09:15:133
787902992016,3cyclictest938436-21apt-get09:35:112
787902992016,3cyclictest787878-21kworker/u8:3+flush-259:008:15:162
787902992015,4cyclictest1047814-21apt-get11:20:122
787894992017,2cyclictest990045-21kworker/u8:2+flush-259:010:40:180
787894992017,2cyclictest1057849-21kworker/u8:2+flush-259:011:35:260
787904991914,4cyclictest865875-21kworker/u8:0+flush-259:009:05:013
787904991914,3cyclictest1042423-21cp11:15:023
787902991915,2cyclictest1021364-21idleruntime-cro10:55:012
787898991916,2cyclictest824008-21idleruntime-cro07:45:001
787898991914,4cyclictest834664-21apt-get07:55:111
787894991917,1cyclictest0-21swapper/012:10:000
787894991916,2cyclictest808534-21kworker/u8:4+flush-259:008:15:010
787898991816,1cyclictest1120161-21cron12:30:001
787904991715,1cyclictest1109842-21kworker/u8:3+events_unbound12:20:013
787904991713,2cyclictest1122017-21kthreadcore12:30:173
787904991711,4cyclictest860955-21/usr/sbin/munin08:20:213
787904991710,5cyclictest252-21systemd-journal10:15:573
787902991715,1cyclictest0-21swapper/209:24:592
787902991715,1cyclictest0-21swapper/208:10:002
787902991715,1cyclictest0-21swapper/208:05:002
787902991714,2cyclictest1104816-21latency_hist12:15:012
787902991713,3cyclictest1032082-21diskstats11:05:152
787898991714,2cyclictest839557-21kworker/u8:1+flush-259:008:20:011
787898991713,2cyclictest0-21swapper/111:24:591
787898991712,3cyclictest788278-21fschecks_count07:10:151
787894991714,2cyclictest984874-21idleruntime-cro10:20:010
787894991714,2cyclictest61150irq/133-enp0s29f1:tx-010:11:570
787894991710,5cyclictest1000344-21latency_hist10:35:010
787904991613,2cyclictest958766-21munin-plugin-st09:55:003
787904991613,2cyclictest807607-21ntp_kernel_pll_07:25:213
787904991612,3cyclictest881688-21kworker/u8:5+flush-259:008:55:243
787904991611,3cyclictest912350-21kworker/u8:1+events_unbound10:25:143
787902991613,1cyclictest0-21swapper/210:35:002
787898991613,2cyclictest787878-21kworker/u8:3+flush-259:007:25:001
787898991612,2cyclictest1114068-21needreboot12:20:201
787898991610,5cyclictest933193-21kworker/u8:3+flush-259:010:35:011
787894991614,1cyclictest60350irq/132-enp0s29f1:rx-010:55:260
787894991614,1cyclictest60350irq/132-enp0s29f1:rx-008:44:320
787894991614,1cyclictest60350irq/132-enp0s29f1:rx-007:40:260
787894991613,2cyclictest61150irq/133-enp0s29f1:tx-009:00:180
787894991613,2cyclictest60350irq/132-enp0s29f1:rx-009:30:100
787894991613,2cyclictest60350irq/132-enp0s29f1:rx-007:47:540
787894991613,1cyclictest0-21swapper/012:04:590
787894991612,3cyclictest860980-21apt-get08:20:110
787894991610,4cyclictest1120182-21latency_hist12:30:010
78790499157,5cyclictest252-21systemd-journal11:50:003
787904991511,3cyclictest844748-21idleruntime-cro08:05:003
787904991511,3cyclictest787878-21kworker/u8:3+flush-259:007:35:183
787904991511,3cyclictest1084251-21kworker/u8:4+flush-259:012:10:173
787904991511,2cyclictest0-21swapper/308:50:013
78790299159,4cyclictest252-21systemd-journal07:20:002
78790299159,4cyclictest1047537-21latency_hist11:20:002
787902991512,2cyclictest817837-21needreboot07:35:192
787902991510,3cyclictest252-21systemd-journal10:35:032
787898991513,1cyclictest0-21swapper/111:50:001
787898991512,2cyclictest887122-21fschecks_time08:45:141
787898991511,3cyclictest933193-21kworker/u8:3+flush-259:009:45:461
78789499158,5cyclictest973270-21ntpq10:05:220
787894991514,1cyclictest60350irq/132-enp0s29f1:rx-008:49:300
787894991513,1cyclictest60350irq/132-enp0s29f1:rx-012:20:250
787894991513,1cyclictest60350irq/132-enp0s29f1:rx-011:25:230
787894991513,1cyclictest60350irq/132-enp0s29f1:rx-009:47:530
787894991513,1cyclictest60350irq/132-enp0s29f1:rx-009:05:250
78790499149,3cyclictest912308-21cron09:09:593
787904991411,2cyclictest881688-21kworker/u8:5+events_unbound09:15:013
787904991411,2cyclictest824483-21fschecks_count07:45:143
787904991410,2cyclictest0-21swapper/310:45:183
78790299149,4cyclictest881688-21kworker/u8:5+flush-259:008:40:072
787902991412,1cyclictest891783-21systemd-run08:50:012
787902991411,2cyclictest906754-21unixbench_singl09:00:262
787902991411,2cyclictest819494-21irqcore07:40:182
787902991411,2cyclictest802907-21unixbench_singl07:20:252
787902991411,2cyclictest1088725-21unixbench_multi11:55:242
787902991411,2cyclictest1069234-21sed11:40:172
787898991411,2cyclictest948496-21idleruntime-cro09:44:591
787898991411,2cyclictest845541-21cpuspeed_turbos08:05:131
787898991411,2cyclictest1100198-21irqcore12:10:171
787894991413,1cyclictest60350irq/132-enp0s29f1:rx-011:33:280
787894991413,1cyclictest60350irq/132-enp0s29f1:rx-009:21:580
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-010:47:590
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-009:40:210
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-009:25:150
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-009:15:250
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-008:05:170
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-007:23:510
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-007:15:240
787894991412,1cyclictest60350irq/132-enp0s29f1:rx-007:10:140
787894991411,2cyclictest916627-21ntp_kernel_pll_09:10:200
787894991411,2cyclictest60350irq/132-enp0s29f1:rx-012:32:250
787894991411,2cyclictest60350irq/132-enp0s29f1:rx-011:55:110
787894991411,2cyclictest60350irq/132-enp0s29f1:rx-011:50:120
787894991411,2cyclictest60350irq/132-enp0s29f1:rx-010:25:190
787894991411,2cyclictest60350irq/132-enp0s29f1:rx-008:35:110
787894991410,3cyclictest1037062-21apt-get11:10:140
78790499139,3cyclictest896458-21unixbench_singl08:50:243
78790499138,3cyclictest938789-21kworker/u8:4+flush-259:009:35:163
78790499137,4cyclictest252-21systemd-journal11:13:563
78790499131,9cyclictest793008-21awk07:15:013
78790499131,10cyclictest860712-21awk08:20:003
787902991311,1cyclictest0-21swapper/212:35:172
787902991311,1cyclictest0-21swapper/207:25:182
787902991310,2cyclictest881688-21kworker/u8:5+flush-259:008:55:232
787902991310,2cyclictest855067-21unixbench_multi08:10:272
787902991310,2cyclictest0-21swapper/208:25:002
78789899139,3cyclictest902307-21/usr/sbin/munin09:00:181
78789899138,3cyclictest252-21systemd-journal07:39:571
787898991311,1cyclictest990045-21kworker/u8:2-events_unbound10:55:001
787898991311,1cyclictest917488-21cron09:15:001
78789899130,1cyclictest813701-21idleruntime-cro07:35:001
78789899130,1cyclictest0-21swapper/111:30:001
787894991312,1cyclictest60350irq/132-enp0s29f1:rx-010:00:380
787894991312,1cyclictest60350irq/132-enp0s29f1:rx-008:25:180
787894991312,1cyclictest60350irq/132-enp0s29f1:rx-007:56:070
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-012:35:150
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-012:15:160
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-010:22:290
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-009:55:480
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-009:50:150
787894991311,1cyclictest60350irq/132-enp0s29f1:rx-008:15:470
787894991310,2cyclictest60350irq/132-enp0s29f1:rx-011:00:270
78790499129,2cyclictest810662-21kthreadcore07:30:163
78790499129,2cyclictest1073931-21kworker/u8:3+events_unbound12:00:193
78790499125,5cyclictest1096844-21kthreadcore12:05:163
78790499121,3cyclictest1021376-21latency_hist10:55:013
787904991210,1cyclictest0-21swapper/311:40:223
787904991210,1cyclictest0-21swapper/311:30:133
787904991210,1cyclictest0-21swapper/307:15:263
78790299129,2cyclictest808912-21cpuspeed_turbos07:30:122
78790299129,2cyclictest0-21swapper/207:10:152
78790299128,3cyclictest865875-21kworker/u8:0+flush-259:008:50:152
78790299128,3cyclictest252-21systemd-journal10:14:532
787902991210,1cyclictest0-21swapper/210:50:012
78790299120,4cyclictest829186-21awk07:50:002
78789899128,3cyclictest252-21systemd-journal10:36:581
78789899128,3cyclictest1016256-21kworker/u8:1+flush-259:011:30:421
78789899127,4cyclictest974267-21gpgv10:10:011
78789899127,3cyclictest252-21systemd-journal09:29:591
787898991210,1cyclictest894319-21tr08:50:171
787898991210,1cyclictest0-21swapper/112:00:001
78789899120,10cyclictest871012-21awk08:30:001
78789499129,2cyclictest60350irq/132-enp0s29f1:rx-008:00:150
78789499126,4cyclictest803757-21diskstats07:25:140
787894991211,1cyclictest60350irq/132-enp0s29f1:rx-007:32:060
787894991210,1cyclictest60350irq/132-enp0s29f1:rx-010:35:140
787894991210,1cyclictest60350irq/132-enp0s29f1:rx-007:50:230
78790499117,3cyclictest1036809-21kworker/u8:4+events_unbound11:25:183
78790299119,1cyclictest0-21swapper/212:35:002
78790299119,1cyclictest0-21swapper/211:25:172
78790299119,1cyclictest0-21swapper/210:05:172
78790299119,1cyclictest0-21swapper/210:05:002
78790299118,2cyclictest0-21swapper/211:45:252
78789899119,1cyclictest0-21swapper/112:15:121
78789899119,1cyclictest0-21swapper/108:35:131
78789899118,2cyclictest985213-21cpuspeed_turbos10:20:141
78789899118,2cyclictest959088-21cpuspeed_turbos09:55:131
78789899118,2cyclictest912350-21kworker/u8:1+events_unbound10:17:361
78789899118,2cyclictest824407-21cpuspeed_turbos07:45:141
78789899118,2cyclictest1031177-21unixbench_multi11:00:261
78789899118,2cyclictest0-21swapper/109:35:151
78789899118,2cyclictest0-21swapper/107:15:241
78789899117,2cyclictest17450irq/129-nvme0q209:20:001
78789899116,4cyclictest968156-21ntpq10:00:221
78789499119,1cyclictest60350irq/132-enp0s29f1:rx-008:56:460
78789499118,2cyclictest60350irq/132-enp0s29f1:rx-011:20:120
787894991110,1cyclictest60350irq/132-enp0s29f1:rx-012:12:110
787894991110,1cyclictest60350irq/132-enp0s29f1:rx-009:37:140
787894991110,1cyclictest60350irq/132-enp0s29f1:rx-007:36:160
78790499105,4cyclictest835239-21cut07:55:163
78790499105,3cyclictest912350-21kworker/u8:1+flush-259:009:55:173
78790299108,1cyclictest0-21swapper/210:45:002
78790299108,1cyclictest0-21swapper/207:50:142
78790299107,2cyclictest948830-21cpuspeed_turbos09:45:122
78790299107,2cyclictest912657-21cpuspeed_turbos09:10:122
78790299107,2cyclictest1114073-21needreboot12:20:202
78790299107,2cyclictest1022656-21kthreadcore10:55:182
78790299107,2cyclictest0-21swapper/210:30:002
78790299106,3cyclictest500-21systemd-logind12:09:192
78790299106,3cyclictest0-21swapper/209:50:142
78790299106,3cyclictest0-21swapper/208:35:242
78790299105,3cyclictest1062075-21ntp_11:30:222
78790299103,5cyclictest932381-21timerwakeupswit09:25:232
78789899108,1cyclictest0-21swapper/110:25:131
78789899107,2cyclictest1000572-21kworker/u8:0+flush-259:010:45:211
78789899106,2cyclictest1093536-21ntpq12:00:221
78789899105,3cyclictest900892-21tr08:55:201
78789899100,2cyclictest834397-21latency_hist07:55:001
78789499107,2cyclictest60350irq/132-enp0s29f1:rx-008:50:190
7879029996,2cyclictest933193-21kworker/u8:3+flush-259:009:55:032
7878989997,1cyclictest0-21swapper/111:15:011
7878989997,1cyclictest0-21swapper/111:10:001
7878989997,1cyclictest0-21swapper/108:20:561
7878989995,3cyclictest311ktimers/109:50:131
7879029984,3cyclictest947265-21cut09:40:202
7879029983,4cyclictest1105913-21irqcore12:15:162
7878989984,3cyclictest1069587-21sed11:40:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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