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2026-01-26 - 09:59
[ 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 #1, slot #6

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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  Intel
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Mon Jan 26, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21369999926,58cyclictest27096-21iostat_ios21:34:043
2136299994,88cyclictest0-21swapper/022:44:130
2136299984,87cyclictest0-21swapper/021:57:230
2136999963,11cyclictest5641-21unixbench_singl21:49:153
2136299965,84cyclictest0-21swapper/021:19:020
2136299964,27cyclictest0-21swapper/021:38:540
2136999954,24cyclictest0-21swapper/323:29:013
21369999538,50cyclictest29116-21unixbench_multi22:24:153
21369999525,12cyclictest0-21swapper/321:24:043
21369999525,12cyclictest0-21swapper/321:24:043
2136799954,14cyclictest0-21swapper/122:13:411
2136299955,83cyclictest0-21swapper/020:59:080
2136999944,82cyclictest0-21swapper/320:35:513
21369999433,53cyclictest30219-21cpuspeed_turbos19:54:013
21369999433,52cyclictest18022-21unixbench-2d23:44:123
2136299946,27cyclictest0-21swapper/023:41:480
2136299944,83cyclictest0-21swapper/022:04:570
2136299943,85cyclictest0-21swapper/023:28:010
2136299943,85cyclictest0-21swapper/023:10:070
2136999934,32cyclictest0-21swapper/320:25:263
2136999933,82cyclictest28454-21munin-node23:13:553
2136299935,82cyclictest0-21swapper/023:19:070
2136299935,82cyclictest0-21swapper/023:19:070
2136299935,81cyclictest0-21swapper/022:39:020
2136299935,80cyclictest0-21swapper/023:17:380
2136299934,83cyclictest0-21swapper/023:54:220
2136299934,82cyclictest0-21swapper/022:54:000
2136299934,82cyclictest0-21swapper/022:17:210
2136299934,82cyclictest0-21swapper/021:04:080
2136299934,11cyclictest23543-21runrttasks20:41:040
2136999924,21cyclictest18232-21sshd21:20:343
21369999214,13cyclictest0-21swapper/321:14:403
2136299925,80cyclictest0-21swapper/023:29:450
2136299925,80cyclictest0-21swapper/021:14:060
2136299923,83cyclictest0-21swapper/023:47:050
21362999218,11cyclictest11408-21ssh21:59:000
2136999914,23cyclictest0-21swapper/323:39:003
2136299916,78cyclictest2507-21gdm-simple-gree22:36:380
2136299914,80cyclictest0-21swapper/021:50:070
21362999126,8cyclictest1419-21runrttasks21:09:510
21369999045,37cyclictest15157-21cut22:04:073
2136999904,14cyclictest0-21swapper/321:40:543
2136999904,13cyclictest0-21swapper/320:42:133
2136999903,24cyclictest13194-21ssh22:02:053
2136999903,23cyclictest9584-21missed_timers22:44:053
2136799904,77cyclictest0-21swapper/122:37:061
2136799903,11cyclictest0-21swapper/121:36:381
2136299905,79cyclictest0-21swapper/021:27:400
2136299905,79cyclictest0-21swapper/021:27:400
2136299904,79cyclictest0-21swapper/023:00:300
2136299904,79cyclictest0-21swapper/020:56:310
2136299903,81cyclictest0-21swapper/022:51:320
2136299903,81cyclictest0-21swapper/021:34:320
2136999898,14cyclictest0-21swapper/323:35:533
2136999894,26cyclictest0-21swapper/323:04:053
2136999894,24cyclictest0-21swapper/322:32:093
2136999894,24cyclictest0-21swapper/321:57:063
21369998931,11cyclictest1183-21unixbench_multi23:19:133
21369998931,11cyclictest1183-21unixbench_multi23:19:133
2136299895,77cyclictest0-21swapper/020:51:070
2136299895,77cyclictest0-21swapper/020:47:490
2136299895,77cyclictest0-21swapper/020:47:490
2136299895,76cyclictest0-21swapper/022:09:150
2136299894,79cyclictest0-21swapper/023:34:060
2136299894,78cyclictest0-21swapper/018:44:070
2136299894,77cyclictest0-21swapper/023:04:140
2136299894,77cyclictest0-21swapper/022:28:550
2136999884,26cyclictest0-21swapper/322:33:533
2136999884,24cyclictest0-21swapper/321:01:063
2136999884,14cyclictest0-21swapper/318:29:163
2136999883,22cyclictest0-21swapper/320:08:583
21369998821,11cyclictest15930-21gltestperf22:54:003
21369998816,12cyclictest0-21swapper/320:51:103
2136799883,14cyclictest0-21swapper/123:07:461
2136299884,77cyclictest0-21swapper/021:28:570
2136299884,25cyclictest0-21swapper/020:34:180
21362998834,46cyclictest12683-21grep20:24:060
2136299883,79cyclictest0-21swapper/023:49:500
2136299883,79cyclictest0-21swapper/022:28:180
248599870,5rtkit-daemon2484-21rtkit-daemon22:59:522
248599870,5rtkit-daemon2484-21rtkit-daemon18:29:172
2136999875,25cyclictest0-21swapper/323:24:343
2136999874,26cyclictest0-21swapper/323:11:113
2136999873,34cyclictest8022-21gltestperf20:14:053
2136999873,25cyclictest5520-21df22:38:553
21369998726,11cyclictest10146-21unixbench_singl19:09:223
21369998720,9cyclictest27153-21fschecks_time18:39:123
21369998718,10cyclictest25793-21sed22:19:153
21369998716,13cyclictest0-21swapper/322:48:583
21369998710,10cyclictest18411-21munin-node22:59:083
2136799874,64cyclictest0-21swapper/120:37:171
2136799874,14cyclictest0-21swapper/122:18:221
2136799874,14cyclictest0-21swapper/120:49:151
2136799873,18cyclictest0-21swapper/120:55:071
2136799873,16cyclictest0-21swapper/123:10:581
2136299874,77cyclictest0-21swapper/021:44:120
2136299873,78cyclictest0-21swapper/020:33:170
2136999865,23cyclictest11398-21yum-updatesd-he21:10:103
2136999865,21cyclictest0-21swapper/320:54:153
2136999865,11cyclictest1419-21runrttasks22:10:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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