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2026-02-23 - 22:46
[ 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 #e, 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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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 100 highest latencies:
System rackeslot6s.osadl.org (updated Mon Feb 23, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3390033998073,5cyclictest231ktimers/110:50:011
339003399807,20cyclictest3402312-21/usr/sbin/munin08:20:191
3390031998043,33cyclictest3402868-21grep08:20:280
339003199711,9cyclictest3426248-21apt-key10:40:000
3390033996913,15cyclictest3412535-21/usr/sbin/munin09:20:201
3390031996943,21cyclictest20650irq/252-8000000.ethernet09:30:140
339003599683,30cyclictest0-21swapper/211:25:012
3390031996638,23cyclictest20850irq/208-8000000.ethernet09:00:010
3390031996539,20cyclictest3399109-21cut08:00:220
3390031996444,15cyclictest0-21swapper/010:30:280
339003199633,6cyclictest0-21swapper/007:40:270
3390031996334,26cyclictest3415895-21grep09:40:010
339003199632,58cyclictest3401603-21tune2fs08:15:200
3390031996324,35cyclictest0-21swapper/007:10:290
3390033996226,19cyclictest3444401-21/usr/sbin/munin12:25:171
3390031996239,19cyclictest20650irq/252-8000000.ethernet10:55:000
339003199623,5cyclictest0-21swapper/007:50:020
3390031996226,30cyclictest3411641-21grep09:15:010
339003199614,53cyclictest3441579-21grep12:05:300
3390031996119,38cyclictest0-21swapper/009:55:290
339003199611,58cyclictest0-21swapper/012:25:010
3390031996031,24cyclictest20650irq/252-8000000.ethernet07:15:300
3390031996023,33cyclictest3443284-21grep12:15:300
339003199599,5cyclictest131ktimers/011:05:230
339003199599,5cyclictest131ktimers/011:05:230
3390031995929,25cyclictest0-21swapper/011:55:210
339003199591,55cyclictest3434563-21meminfo11:25:230
339003199583,12cyclictest3438811-21phc2sys11:50:260
3390031995830,25cyclictest3422578-21mailstats10:15:280
3390031995830,23cyclictest20650irq/252-8000000.ethernet08:40:170
3390031995820,33cyclictest0-21swapper/007:25:300
339003199574,8cyclictest3401164-21grep08:10:280
339003199574,8cyclictest3401164-21grep08:10:270
3390031995725,28cyclictest3436242-21meminfo11:35:240
3390031995721,29cyclictest0-21swapper/009:45:010
339003199571,53cyclictest3435470-21ps11:30:260
339003399569,20cyclictest3429104-21/usr/sbin/munin10:55:211
339003399569,20cyclictest3429104-21/usr/sbin/munin10:55:211
339003199564,7cyclictest3421839-21grep10:10:280
3390031995630,23cyclictest20650irq/252-8000000.ethernet11:40:280
339003199562,7cyclictest3440705-21grep12:00:280
3390031995539,12cyclictest20650irq/252-8000000.ethernet08:50:200
3390031995539,12cyclictest20650irq/252-8000000.ethernet08:50:200
339003199552,7cyclictest3433961-21unixbench_multi11:20:270
3390031995524,26cyclictest0-21swapper/007:55:170
3390031995524,26cyclictest0-21swapper/007:55:170
3390031995522,31cyclictest0-21swapper/009:50:170
3390031995522,31cyclictest0-21swapper/009:50:170
3390031995519,30cyclictest0-21swapper/007:35:280
3390035995440,4cyclictest0-21swapper/212:00:182
339003199544,9cyclictest3394383-21tail07:30:270
339003199544,9cyclictest3394383-21tail07:30:270
3390031995446,4cyclictest167350irq/118-8000000.ethernet-tx007:50:190
339003199543,47cyclictest3426616-21/usr/sbin/munin10:40:220
3390031995428,22cyclictest3404529-21grep08:30:290
339003199542,46cyclictest3438218-21grep11:45:280
339003199541,3cyclictest0-21swapper/010:25:130
3390033995342,6cyclictest3423495-21grep10:20:311
339003199534,11cyclictest3433117-21grep11:15:280
339003199533,9cyclictest3409688-21grep09:00:290
339003199533,10cyclictest3444978-21grep12:25:270
3390031995328,21cyclictest20650irq/252-8000000.ethernet09:45:270
3390033995234,10cyclictest14-21rcu_preempt11:15:191
3390031995231,18cyclictest20650irq/252-8000000.ethernet09:20:300
339003199522,9cyclictest3429737-21cron11:00:000
339003199522,9cyclictest3429737-21cron10:59:590
339003199522,6cyclictest3446005-21cat12:35:010
3390031995215,33cyclictest0-21swapper/010:10:010
3390031995215,29cyclictest3371253-1kworker/0:1H+kblockd07:10:020
339003199513,7cyclictest3413468-21fschecks_count09:25:180
339003199512,8cyclictest3420241-21latency_hist10:05:010
339003199512,46cyclictest3429742-21apt-get11:00:050
3390031995121,24cyclictest0-21swapper/009:05:290
339003199511,9cyclictest3407181-21/usr/sbin/munin08:45:270
339003199511,8cyclictest3432317-21grep11:10:290
3390031995111,36cyclictest0-21swapper/008:25:270
339003199503,10cyclictest3427613-21sed10:45:230
339003199502,9cyclictest3423474-21grep10:20:310
3390031995025,22cyclictest0-21swapper/008:40:010
3390031995025,22cyclictest0-21swapper/008:40:010
339003199501,5cyclictest3412290-21/usr/sbin/munin09:15:290
3390031994918,27cyclictest0-21swapper/008:05:290
3390031994915,29cyclictest3442437-21grep12:10:280
3390035994839,5cyclictest311ktimers/207:40:282
339003199482,6cyclictest3446220-21cut12:35:200
3390035994734,8cyclictest0-21swapper/209:40:012
339003199472,9cyclictest3392546-21proc_pri07:20:270
339003599464,22cyclictest3431727-21/usr/sbin/munin11:10:192
3390035994636,5cyclictest3403795-21munin-plugin-st08:30:002
339003399466,18cyclictest3427046-21apt-get10:45:011
3390033994627,12cyclictest231ktimers/110:10:111
3390035994530,9cyclictest3405562-21apt08:40:002
3390035994530,9cyclictest3405562-21apt08:40:002
339003399457,17cyclictest22-21rcuc/107:15:011
3390033994533,3cyclictest0-21swapper/111:10:011
3390033994533,3cyclictest0-21swapper/111:10:011
3390035994430,9cyclictest3438282-21munin-plugin-st11:50:002
3390035994429,7cyclictest0-21swapper/209:40:292
3390035994421,11cyclictest311ktimers/211:15:132
339003599432,24cyclictest0-21swapper/210:05:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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