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2026-09-03 - 03:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Thu Sep 03, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4314322580,6chrt0-21swapper/223:27:472
172373995647,7cyclictest184558-21/usr/sbin/munin19:22:440
172383995041,7cyclictest327802-21gpgv21:45:012
172373995041,7cyclictest275-21systemd-journal23:10:010
4423522440,2sleep3575-21kworker/3:2+events23:42:293
172376994436,5cyclictest189092-21latency_hist19:25:011
172376994434,7cyclictest481889-21latency_hist00:20:011
172376994434,7cyclictest278283-21latency_hist20:55:001
172376994434,7cyclictest278283-21latency_hist20:54:591
3746802420,4sleep30-21swapper/322:32:353
172373994131,8cyclictest257768-21ntpq20:32:370
172373994030,8cyclictest442500-21diskstats23:42:300
17237399400,37cyclictest238493-21true20:15:000
1979122390,6sleep3451irq_work/319:32:373
172376993933,4cyclictest179354-21kworker/u8:1+flush-8:021:47:311
172373993929,8cyclictest492441-21/usr/sbin/munin00:32:460
172373993832,4cyclictest238494-21kworker/u8:2+flush-8:021:17:320
172376993731,4cyclictest263477-21latency_hist20:40:011
172376993727,7cyclictest275-21systemd-journal00:20:321
172373993730,5cyclictest275-21systemd-journal22:40:000
172376993627,6cyclictest402153-21latency_hist23:00:011
172373993630,4cyclictest238494-21kworker/u8:2+flush-8:020:22:310
172373993629,5cyclictest326915-21ntpq21:42:400
172373993628,6cyclictest357326-21unixbench_multi22:12:460
172376993526,7cyclictest275-21systemd-journal20:40:551
172373993527,3cyclictest238494-21kworker/u8:2+flush-8:022:52:310
17237399350,33cyclictest431897-21true23:30:010
4483082340,4sleep3575-21kworker/3:2-events23:47:353
172376993427,5cyclictest275-21systemd-journal21:35:001
172376993426,6cyclictest275-21systemd-journal21:36:551
172373993424,8cyclictest482001-21cp00:20:000
172376993328,3cyclictest451962-21apt-key23:50:011
172376993326,5cyclictest275-21systemd-journal20:02:551
172373993326,5cyclictest208884-21cron19:45:000
172373993324,7cyclictest362515-21turbostat.cron22:20:000
172373993322,8cyclictest275-21systemd-journal22:43:380
172376993225,5cyclictest3031583-21kworker/u8:4+flush-8:021:52:261
172373993226,4cyclictest441556-21unixbench_singl23:37:470
172373993226,4cyclictest422729-21fschecks_time23:22:290
172373993226,4cyclictest365126-21kthreadcore22:22:340
172373993226,4cyclictest344112-21kthreadcore22:02:350
172373993226,3cyclictest402155-21sh23:00:010
172376993128,2cyclictest213563-21grep19:47:461
172376993127,3cyclictest358372-21fschecks_time22:17:351
172373993126,3cyclictest259569-21irqcore20:37:330
172373993126,3cyclictest172938-21cpuspeed_turbos19:12:300
172373993125,4cyclictest482867-21fschecks_count00:22:320
172373993125,4cyclictest461821-21cron00:00:000
172373993125,4cyclictest452712-21fschecks_time23:52:300
172373993124,5cyclictest213576-21unixbench_singl19:47:470
172373993122,7cyclictest462650-21fschecks_time00:02:310
172373993121,8cyclictest253596-21cron20:30:000
172383993025,4cyclictest3031583-21kworker/u8:4+flush-8:021:27:462
172376993026,3cyclictest3031583-21kworker/u8:4+flush-8:020:55:011
172376993024,4cyclictest179607-21apt-get19:17:261
172373993025,3cyclictest447473-21fschecks_count23:47:300
172373993025,3cyclictest350301-21kthreadcore22:07:350
172373993024,4cyclictest334010-21irqrtprio21:52:330
172373993024,4cyclictest284256-21sort21:02:320
172373993024,4cyclictest193762-21unixbench_multi19:27:470
172383992926,2cyclictest258254-21unixbench_multi20:32:452
172383992924,4cyclictest402404-21kworker/u8:1+flush-8:000:22:312
172376992925,3cyclictest201572-21kthreadcore19:37:351
172376992924,3cyclictest293770-21cpuspeed_turbos21:12:291
172376992924,3cyclictest234699-21irqrtprio20:12:381
172376992924,2cyclictest0-21swapper/100:12:381
172373992924,3cyclictest307647-21unixbench_multi21:22:480
172373992923,4cyclictest388099-21fschecks_count22:47:320
172373992923,4cyclictest388099-21fschecks_count22:47:320
172373992923,4cyclictest373194-21fschecks_time22:32:300
172373992923,4cyclictest372127-21unixbench_multi22:27:460
172373992923,4cyclictest279243-21irqcore20:57:340
172373992923,4cyclictest199706-21fschecks_count19:37:300
172373992922,5cyclictest472229-21aten2_r5power_c00:12:320
172373992921,6cyclictest268166-21unixbench_multi20:42:470
172376992824,3cyclictest431896-21systemd-run23:30:011
172376992824,3cyclictest214475-21cpuspeed_turbos19:52:321
172376992822,4cyclictest352411-21unixbench_singl22:07:461
172376992819,6cyclictest312847-21latency_hist21:30:011
172373992823,4cyclictest3031583-21kworker/u8:4+flush-8:021:37:430
172373992823,3cyclictest432580-21fschecks_count23:32:310
172373992823,3cyclictest273101-21unixbench_multi20:47:470
172373992823,3cyclictest229390-21fschecks_time20:07:310
172373992823,3cyclictest219397-21cpuspeed_turbos19:57:290
172373992822,4cyclictest342463-21unixbench_multi21:57:510
172373992822,4cyclictest239201-21fschecks_count20:17:290
172373992822,4cyclictest194722-21fschecks_count19:32:300
172373992821,4cyclictest412765-21fschecks_count23:12:300
172383992724,2cyclictest228320-21unixbench_multi20:02:472
172383992710,5cyclictest0-21swapper/220:47:412
172376992722,4cyclictest431197-21kworker/u8:2+events_unbound23:35:011
172376992721,4cyclictest0-21swapper/123:55:001
172376992719,6cyclictest338210-21/usr/sbin/munin21:57:491
172373992722,3cyclictest278267-21cron20:55:000
172373992722,3cyclictest278267-21cron20:55:000
172373992722,3cyclictest20823-21cron21:50:000
3436762260,2sleep3471rcuc/322:02:333
172376992623,2cyclictest375014-21kthreadcore22:32:351
172376992622,3cyclictest238494-21kworker/u8:2+events_unbound22:47:481
172376992622,3cyclictest238494-21kworker/u8:2+events_unbound22:47:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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