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2026-04-10 - 01:53

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 the 376 highest latencies:
System rackeslot4s.osadl.org (updated Thu Apr 09, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
766483994034,4cyclictest1071941-21latency_hist12:05:012
766487993430,3cyclictest968622-21kworker/u8:0+flush-259:011:40:003
766483993427,5cyclictest900964-21dpkg09:19:062
766477993430,3cyclictest921988-21kworker/u8:2+flush-259:009:45:000
766477993426,3cyclictest252-21systemd-journal09:00:010
766487993329,3cyclictest833781-21kworker/u8:2+flush-259:009:25:263
766480993329,3cyclictest916643-21kworker/u8:3+flush-259:011:10:171
766487993228,3cyclictest812819-21kworker/u8:0+flush-259:009:40:003
766477993228,2cyclictest870250-21apt-get08:50:110
766477993227,4cyclictest766406-21latency_hist07:10:010
766477993125,4cyclictest953136-21latency_hist10:10:020
766483993025,4cyclictest822629-21ntpq08:00:212
766477993026,3cyclictest885716-21apt-get09:05:130
766487992924,4cyclictest875125-21kworker/u8:1+flush-259:009:35:003
766487992825,2cyclictest968622-21kworker/u8:0+flush-259:011:40:223
766480992824,3cyclictest880551-21apt-get09:00:101
766480992823,4cyclictest818575-21cp08:00:001
766480992723,3cyclictest1087690-21kworker/u8:3+flush-259:012:35:261
766480992722,3cyclictest958542-21apt-get10:15:121
766480992720,5cyclictest801596-21ntpq07:40:241
766477992723,3cyclictest984232-21/usr/sbin/munin10:40:230
766477992723,3cyclictest916883-21apt-get09:35:120
766487992621,3cyclictest932307-21/usr/sbin/munin09:50:113
766487992620,4cyclictest942396-21latency_hist10:00:023
766483992620,4cyclictest999844-21latency_hist10:55:012
766480992622,3cyclictest812819-21kworker/u8:0+flush-259:009:10:171
766480992620,4cyclictest252-21systemd-journal08:32:481
766480992620,4cyclictest252-21systemd-journal08:32:471
766480992519,4cyclictest932116-21kworker/u8:0+flush-259:009:50:141
766480992519,4cyclictest252-21systemd-journal10:28:471
766480992519,4cyclictest1082559-21apt-get12:15:101
766477992522,2cyclictest812819-21kworker/u8:0+flush-259:008:10:250
766477992519,5cyclictest1092623-21latency_hist12:25:010
766477992519,4cyclictest915699-21ntpq09:30:180
766487992420,3cyclictest1051367-21kworker/u8:3+flush-259:011:45:243
766487992417,5cyclictest843269-21ntpq08:20:203
766480992419,4cyclictest974001-21apt-get10:30:101
766477992419,4cyclictest252-21systemd-journal10:25:000
766487992320,2cyclictest984036-21kworker/u8:1+flush-259:011:00:163
766487992319,3cyclictest1911696-21kworker/u8:2+flush-259:007:35:013
766487992318,3cyclictest776986-21apt-get07:20:103
766483992318,3cyclictest252-21systemd-journal09:30:012
766483992317,4cyclictest916616-21latency_hist09:35:002
766480992319,3cyclictest812819-21kworker/u8:0+events_unbound09:35:291
766480992317,4cyclictest1031030-21/usr/sbin/munin11:25:141
766477992319,3cyclictest958300-21kworker/u8:2+flush-259:010:25:160
766477992318,3cyclictest1082292-21latency_hist12:15:010
766477992317,4cyclictest252-21systemd-journal08:20:000
766487992218,3cyclictest746008-21kworker/u8:1+flush-259:007:15:003
766487992216,4cyclictest969004-21diskstats10:25:143
766483992217,3cyclictest968622-21kworker/u8:0+flush-259:010:55:092
766480992217,4cyclictest875125-21kworker/u8:1+flush-259:010:00:261
766480992217,3cyclictest968622-21kworker/u8:0+flush-259:010:45:171
766480992217,3cyclictest252-21systemd-journal07:45:311
766477992216,4cyclictest895800-21latency_hist09:15:000
766487992118,2cyclictest1071592-21kworker/u8:0+flush-259:012:35:163
766487992117,3cyclictest1051367-21kworker/u8:3+flush-259:011:55:013
766483992114,4cyclictest828640-21latency_hist08:10:012
766480992116,4cyclictest252-21systemd-journal07:25:001
766477992118,2cyclictest984036-21kworker/u8:1+flush-259:011:00:190
766477992118,2cyclictest1031021-21kworker/u8:1+flush-259:011:35:210
766477992116,4cyclictest989758-21base6410:45:010
766477992113,6cyclictest252-21systemd-journal10:39:590
766487992012,5cyclictest829068-21diskstats08:10:143
766480992015,3cyclictest252-21systemd-journal08:15:401
766477992017,2cyclictest958300-21kworker/u8:2+flush-259:010:30:210
766477992013,5cyclictest252-21systemd-journal08:40:000
766483991915,3cyclictest1087690-21kworker/u8:3+flush-259:012:35:222
766483991913,4cyclictest802862-21diskstats07:45:142
766480991915,3cyclictest1051367-21kworker/u8:3+flush-259:011:52:521
766477991915,3cyclictest916643-21kworker/u8:3+flush-259:011:05:250
766477991915,3cyclictest1071592-21kworker/u8:0+flush-259:012:04:570
766477991914,4cyclictest1031021-21kworker/u8:1+flush-259:011:30:160
766487991814,3cyclictest1071592-21kworker/u8:0+flush-259:012:25:263
766487991814,2cyclictest0-21swapper/309:10:003
766487991813,4cyclictest844423-21apt-get08:25:133
766487991812,4cyclictest252-21systemd-journal09:19:013
766487991811,5cyclictest252-21systemd-journal11:30:473
766483991815,2cyclictest507-21in:imuxsock11:50:002
766480991815,2cyclictest927601-21irqcore09:45:141
766480991813,4cyclictest1078765-21kworker/u8:2+flush-259:012:20:161
766477991815,2cyclictest875125-21kworker/u8:1+flush-259:010:00:000
766477991815,2cyclictest812819-21kworker/u8:0+events_unbound08:20:230
766477991815,2cyclictest1065956-21ntp_offset11:55:220
766477991814,3cyclictest875125-21kworker/u8:1+events_unbound10:00:210
766477991814,3cyclictest1911696-21kworker/u8:2+flush-259:007:30:000
766477991814,2cyclictest1020467-21cron11:15:000
766477991813,4cyclictest968622-21kworker/u8:0+flush-259:011:24:590
766477991813,3cyclictest849344-21latency_hist08:30:000
766487991713,3cyclictest989152-21apt-get10:45:003
766487991712,4cyclictest952270-21ntpq10:05:223
766487991712,4cyclictest812780-21latency_hist07:55:003
766487991712,3cyclictest817933-21awk08:00:003
766483991713,3cyclictest812819-21kworker/u8:0+flush-259:007:58:192
766480991713,3cyclictest921988-21kworker/u8:2+flush-259:009:40:231
766480991713,3cyclictest746008-21kworker/u8:1+flush-259:007:25:171
766480991713,3cyclictest1051367-21kworker/u8:3+events_unbound11:55:181
766477991713,3cyclictest1911696-21kworker/u8:2+flush-259:007:40:310
766477991713,3cyclictest1031021-21kworker/u8:1+events_unbound11:45:200
76647799170,15cyclictest858-21sshd10:19:470
766487991612,3cyclictest833781-21kworker/u8:2+flush-259:009:20:173
766487991612,3cyclictest818604-21/usr/sbin/munin08:00:143
766483991612,3cyclictest968622-21kworker/u8:0+flush-259:011:35:002
766483991612,3cyclictest875125-21kworker/u8:1+flush-259:009:59:182
766483991611,4cyclictest1911696-21kworker/u8:2+flush-259:007:40:152
76648099169,5cyclictest1040145-21ntpq11:30:201
766480991612,3cyclictest875369-21apt-get08:55:131
766480991612,3cyclictest833781-21kworker/u8:2+flush-259:009:05:161
766477991614,1cyclictest60350irq/132-enp0s29f1:rx-012:35:190
766477991614,1cyclictest60350irq/132-enp0s29f1:rx-009:25:220
766477991614,1cyclictest60350irq/132-enp0s29f1:rx-007:50:240
766477991613,2cyclictest60350irq/132-enp0s29f1:rx-008:30:260
766477991613,2cyclictest60350irq/132-enp0s29f1:rx-008:30:250
766477991612,3cyclictest844388-21kworker/u8:3+flush-259:008:45:200
766477991612,3cyclictest812819-21kworker/u8:0+flush-259:007:55:160
766477991612,2cyclictest776722-21turbostat07:20:000
76647799161,13cyclictest252-21systemd-journal11:15:470
766477991610,4cyclictest968622-21kworker/u8:0+flush-259:010:54:590
766487991512,2cyclictest1051367-21kworker/u8:3+flush-259:011:55:163
766487991511,3cyclictest968622-21kworker/u8:0+events_unbound11:25:203
766480991512,2cyclictest848456-21ntp_kernel_pll_08:25:211
766480991511,3cyclictest875125-21kworker/u8:1+flush-259:010:10:231
766480991510,4cyclictest509-21rs:main1
766477991513,1cyclictest61150irq/133-enp0s29f1:tx-010:10:180
766477991513,1cyclictest60350irq/132-enp0s29f1:rx-012:15:160
766477991513,1cyclictest60350irq/132-enp0s29f1:rx-009:00:290
766477991513,1cyclictest60350irq/132-enp0s29f1:rx-007:45:190
766477991513,1cyclictest60350irq/132-enp0s29f1:rx-007:30:160
766477991512,2cyclictest60350irq/132-enp0s29f1:rx-011:44:020
766477991512,2cyclictest60350irq/132-enp0s29f1:rx-009:52:240
766477991512,2cyclictest60350irq/132-enp0s29f1:rx-008:40:210
766477991512,2cyclictest60350irq/132-enp0s29f1:rx-008:04:500
766477991511,3cyclictest1031021-21kworker/u8:1+flush-259:011:50:210
766477991511,2cyclictest0-21swapper/012:10:010
76648799148,4cyclictest984036-21kworker/u8:1+flush-259:011:15:053
766487991411,2cyclictest802666-21kworker/u8:4+flush-259:007:50:003
766487991411,2cyclictest1025915-21apt-get11:20:093
76648399148,4cyclictest906321-21latency_hist09:25:002
766483991411,2cyclictest772235-21irqcore07:15:172
766483991411,2cyclictest1073226-21kthreadcore12:05:152
766483991410,3cyclictest932116-21kworker/u8:0+flush-259:009:50:222
766483991410,3cyclictest1020705-21kworker/u8:2+flush-259:011:21:122
766483991410,2cyclictest0-21swapper/208:35:012
766483991410,2cyclictest0-21swapper/208:35:002
766480991412,1cyclictest0-21swapper/111:25:001
766477991412,1cyclictest60350irq/132-enp0s29f1:rx-007:21:130
76648799139,3cyclictest932060-21journal-offline09:50:003
76648799131,2cyclictest999835-21awk10:55:003
766487991310,2cyclictest895804-21latency_hist09:15:013
766487991310,2cyclictest797651-21cpuspeed_turbos07:40:143
76648399139,3cyclictest885691-21/usr/sbin/munin09:05:222
76648399139,3cyclictest812819-21kworker/u8:0+flush-259:008:13:512
76648399139,3cyclictest252-21systemd-journal11:36:072
76648399138,3cyclictest252-21systemd-journal08:44:472
766483991310,2cyclictest844490-21cpuspeed_turbos08:25:132
76648099139,3cyclictest968622-21kworker/u8:0+flush-259:011:36:511
76648099139,3cyclictest766709-21apt-get07:10:121
76648099138,4cyclictest252-21systemd-journal12:35:001
766477991311,1cyclictest60350irq/132-enp0s29f1:rx-012:29:370
766477991311,1cyclictest60350irq/132-enp0s29f1:rx-007:35:180
766477991310,2cyclictest60350irq/132-enp0s29f1:rx-011:25:120
76648799129,2cyclictest978081-21proc_pri10:30:213
76648799129,2cyclictest824156-21irqcore08:05:163
76648799129,2cyclictest1082624-21cpuspeed_turbos12:15:133
76648799129,2cyclictest1078765-21kworker/u8:2+events_unbound12:10:173
76648799129,2cyclictest0-21swapper/308:40:003
76648799128,3cyclictest1071592-21kworker/u8:0+flush-259:012:05:153
76648799128,2cyclictest776709-21sh07:20:013
76648799127,3cyclictest792582-21diskstats07:35:123
76648799124,1cyclictest10042422pmu-power10:55:203
76648399129,2cyclictest990039-21fschecks_count10:45:152
76648399128,3cyclictest854495-21kworker/u8:1+flush-259:008:40:002
76648099128,3cyclictest1071592-21kworker/u8:0+flush-259:012:30:011
76648799119,1cyclictest1092609-21cron12:25:013
76648799119,1cyclictest0-21swapper/311:05:173
76648799119,1cyclictest0-21swapper/310:20:213
76648799119,1cyclictest0-21swapper/309:45:013
76648799118,2cyclictest875125-21kworker/u8:1+events_unbound10:05:003
76648799118,2cyclictest0-21swapper/308:55:003
76648799116,3cyclictest958080-21sshd10:12:473
76648399119,1cyclictest0-21swapper/212:25:212
76648399118,2cyclictest969040-21fschecks_count10:25:142
76648399118,2cyclictest792644-21fschecks_time07:35:132
76648399110,10cyclictest1-21systemd07:54:592
76648799108,1cyclictest881572-21tr09:00:163
76648799108,1cyclictest787019-21latency_hist07:30:003
76648099108,1cyclictest0-21swapper/109:35:001
76648099103,5cyclictest823900-21df_inode08:05:141
7664879997,1cyclictest0-21swapper/308:55:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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