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2026-01-27 - 07:43
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #3

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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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot3s.osadl.org (updated Tue Jan 27, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1858889212255,62sleep30-21swapper/319:07:483
18589502120112,5sleep10-21swapper/119:08:351
22457162970,2sleep30-21swapper/323:40:243
185411327954,10sleep20-21swapper/219:05:032
185886127855,18sleep00-21swapper/019:07:250
1859169993127,2cyclictest0-21swapper/322:25:183
20017192260,2sleep00-21swapper/021:15:260
1859169992521,2cyclictest0-21swapper/322:49:473
1859169992520,2cyclictest0-21swapper/300:07:013
1859169992514,7cyclictest1903367-21turbostat19:50:003
185916999251,19cyclictest2331913-21taskset00:32:313
185916999249,13cyclictest0-21swapper/321:16:393
185916999241,19cyclictest2114368-21taskset22:24:153
1859169992320,1cyclictest0-21swapper/321:40:173
1859169992319,2cyclictest0-21swapper/323:55:293
1859169992319,2cyclictest0-21swapper/323:50:183
1859169992319,2cyclictest0-21swapper/322:57:343
1859169992319,2cyclictest0-21swapper/322:00:193
185916999231,18cyclictest2148294-21taskset22:45:003
22703932220,2sleep20-21swapper/223:55:222
22392272220,2sleep20-21swapper/223:37:462
22135282220,3sleep20-21swapper/223:22:082
185916999222,13cyclictest2214109-21taskset23:22:523
1859169992219,2cyclictest0-21swapper/323:15:023
1859169992218,2cyclictest0-21swapper/323:05:163
1859169992218,2cyclictest0-21swapper/321:12:593
1859169992216,2cyclictest0-21swapper/323:00:213
185916999221,18cyclictest2087054-21taskset22:06:163
185916999212,13cyclictest2037507-21taskset21:37:413
1859169992118,1cyclictest0-21swapper/323:35:123
1859169992118,1cyclictest0-21swapper/323:13:013
1859169992118,1cyclictest0-21swapper/322:12:403
1859169992117,2cyclictest0-21swapper/322:16:273
1859169992117,2cyclictest0-21swapper/321:50:253
1859169992117,2cyclictest0-21swapper/321:20:293
1859169992117,2cyclictest0-21swapper/320:10:013
1859169992117,2cyclictest0-21swapper/300:15:113
1859169992117,2cyclictest0-21swapper/300:11:153
22045872201,4sleep22204600-21sh23:16:272
185916999202,15cyclictest67150irq/132-enp1s0-TxRx-322:53:513
1859169992018,1cyclictest0-21swapper/300:37:183
1859169992017,1cyclictest0-21swapper/321:26:513
1859169992017,1cyclictest0-21swapper/320:01:233
1859169992016,2cyclictest0-21swapper/321:45:113
1859169992016,2cyclictest0-21swapper/300:25:003
1859169992015,2cyclictest0-21swapper/322:36:023
1859169992015,2cyclictest0-21swapper/322:36:023
185916999201,15cyclictest2232428-21sleep23:35:003
1859169991917,1cyclictest0-21swapper/319:55:123
1859169991916,2cyclictest0-21swapper/300:25:163
1859169991916,1cyclictest0-21swapper/322:33:133
1859169991916,1cyclictest0-21swapper/320:45:003
1859169991915,3cyclictest67150irq/132-enp1s0-TxRx-323:45:123
1859169991915,2cyclictest0-21swapper/321:05:123
1859169991915,2cyclictest0-21swapper/300:02:513
1859169991914,3cyclictest0-21swapper/321:30:173
22303162181,11sleep01987974-21diskmemload23:31:520
21795162184,2sleep0171rcu_preempt23:01:500
185916999184,2cyclictest0-21swapper/321:55:063
185916999182,13cyclictest0-21swapper/319:20:193
1859169991816,1cyclictest0-21swapper/319:50:173
1859169991815,1cyclictest0-21swapper/320:10:193
185916999181,14cyclictest2220965-21taskset23:25:413
185916999181,14cyclictest0-21swapper/320:50:563
185916999180,10cyclictest1978157-21taskset21:00:143
22960632171,10sleep12296103-21sed00:10:251
22753032171,8sleep22276915-21grep00:00:162
22210192171,10sleep01987974-21diskmemload23:25:470
22081472171,6sleep02208227-21kthreadcore23:20:170
21372932171,2sleep00-21swapper/022:36:160
21372932171,2sleep00-21swapper/022:36:160
21062932171,10sleep01987974-21diskmemload22:20:010
1859169991714,1cyclictest0-21swapper/319:40:193
185916999171,3cyclictest0-21swapper/320:59:323
1859169991713,2cyclictest0-21swapper/320:35:003
1859169991713,2cyclictest0-21swapper/319:40:003
22630972161,9sleep01987974-21diskmemload23:51:000
22475732161,3sleep10-21swapper/123:42:351
21290822161,2sleep20-21swapper/222:31:172
20807562161,6sleep02080767-21sshd22:04:210
20783152161,3sleep21987974-21diskmemload22:00:582
20457752161,10sleep02045785-21ssh21:42:360
20111012160,11sleep22011116-21ssh21:21:302
185916999166,8cyclictest1882301-21turbostat19:34:553
185916999161,9cyclictest1862172-21taskset19:10:153
1859169991613,1cyclictest0-21swapper/320:35:423
1859169991613,1cyclictest0-21swapper/320:20:153
1859169991613,1cyclictest0-21swapper/319:27:313
1859169991613,1cyclictest0-21swapper/319:15:233
1859169991612,2cyclictest0-21swapper/320:20:003
23403262151,9sleep01987974-21diskmemload00:37:220
23242722150,2sleep10-21swapper/100:28:331
23165862151,8sleep01987974-21diskmemload00:24:350
22902542150,1sleep10-21swapper/100:08:461
22327472151,10sleep12232775-21ssh23:35:101
21792432151,4sleep21987974-21diskmemload23:01:272
21546182151,9sleep12154632-21ssh22:46:591
21055612151,4sleep02105566-21ssh22:19:000
20967472150,2sleep00-21swapper/022:12:580
20954022151,9sleep22095417-21ssh22:11:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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