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2026-06-30 - 03:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Tue Jun 30, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137808996432,28cyclictest148107-21grep19:35:260
137821995239,9cyclictest391ktimers/300:00:103
137817995239,8cyclictest210848-21sendmail22:40:012
137808994840,4cyclictest145155-21cron19:30:010
137812994734,9cyclictest231ktimers/123:50:121
137808994723,19cyclictest0-21swapper/023:45:260
137817994634,8cyclictest222507-21grep23:10:252
137817994634,8cyclictest222507-21grep23:10:242
137821994538,4cyclictest162448-21sendmail20:20:013
137817994532,10cyclictest311ktimers/221:25:142
137817994531,9cyclictest311ktimers/221:35:122
137808994418,23cyclictest13550irq/42-30be0000.ethernet22:30:230
137817994335,4cyclictest183111-21cron21:20:002
137808994313,26cyclictest203599-21grep22:15:250
13780899429,5cyclictest220572-21/usr/sbin/munin23:05:240
13780899429,5cyclictest220572-21/usr/sbin/munin23:05:240
13780899427,5cyclictest165187-21/usr/sbin/munin20:25:280
13780899421,10cyclictest169023-21unixbench_singl20:35:270
137808994114,3cyclictest13550irq/42-30be0000.ethernet23:55:160
13780899411,11cyclictest231276-21head23:35:250
137817994029,5cyclictest0-21swapper/222:17:472
137812994029,8cyclictest231ktimers/121:40:131
13780899403,10cyclictest175260-21meminfo20:55:200
13780899401,9cyclictest438-21cron19:20:010
137808994015,22cyclictest0-21swapper/019:55:250
137808994012,3cyclictest0-21swapper/020:20:330
13780899401,11cyclictest250835-21df_inode00:35:150
13780899401,11cyclictest205286-21head22:20:230
13780899401,10cyclictest217901-21wc23:00:000
13780899401,10cyclictest210855-21grep22:40:000
137808994010,5cyclictest174247-1kworker/0:1H+kblockd21:20:010
137808994010,4cyclictest241501-21unixbench_multi00:05:310
137821993931,4cyclictest0-21swapper/321:27:403
137817993931,4cyclictest0-21swapper/222:12:472
137817993926,9cyclictest311ktimers/222:55:112
13780899399,4cyclictest0-21swapper/022:25:260
13780899392,6cyclictest188993-21ntpq21:35:200
13780899391,7cyclictest191447-21grep21:40:250
137808993913,22cyclictest0-21swapper/019:10:200
137808993912,3cyclictest0-21swapper/020:14:480
13780899391,11cyclictest221618-21df23:10:140
13780899391,11cyclictest221618-21df23:10:140
13780899391,11cyclictest177098-21ntp_states21:00:220
13780899391,11cyclictest177098-21ntp_states21:00:220
13780899391,10cyclictest215319-21wc22:50:250
137817993826,4cyclictest182973-21kworker/u8:2+events_unbound21:22:402
137817993825,9cyclictest311ktimers/221:00:142
137817993825,9cyclictest311ktimers/221:00:142
137817993825,5cyclictest195236-21kworker/u8:0+events_unbound22:07:472
13780899389,4cyclictest166740-21missed_timers20:30:200
13780899385,6cyclictest247350-21cpu00:25:130
13780899381,9cyclictest151786-21grep19:45:250
13780899381,9cyclictest145580-21fschecks_time19:30:170
137808993811,3cyclictest0-21swapper/000:20:250
13780899381,10cyclictest172467-21unixbench_singl20:45:240
13780899380,13cyclictest0-21swapper/022:00:150
137817993725,8cyclictest239819-21grep00:00:242
137817993720,12cyclictest311ktimers/222:20:092
137812993727,6cyclictest0-21swapper/119:32:191
137812993719,9cyclictest224876-21kworker/u8:2+events_unbound23:22:531
13780899372,7cyclictest186538-21auditctl21:30:010
13780899372,6cyclictest243180-21grep00:10:280
13780899372,6cyclictest243180-21grep00:10:280
13780899372,6cyclictest232485-21ntpq23:40:190
137808993726,7cyclictest0-21swapper/020:50:270
13780899371,9cyclictest250051-21head00:30:260
13780899371,9cyclictest236395-21grep23:50:250
13780899371,8cyclictest201816-21grep22:10:250
13780899371,8cyclictest184432-21grep21:20:250
13780899371,7cyclictest211259-21fschecks_time22:40:160
137808993712,3cyclictest0-21swapper/021:45:250
13780899371,10cyclictest227889-21grep23:25:270
13780899371,10cyclictest227889-21grep23:25:270
13780899371,10cyclictest143569-21cat19:25:010
137821993625,6cyclictest0-21swapper/322:20:233
137821993624,7cyclictest0-21swapper/321:10:253
137821993623,10cyclictest391ktimers/319:20:143
137817993630,3cyclictest0-21swapper/220:20:182
137817993623,10cyclictest311ktimers/200:20:142
137812993626,6cyclictest209121-21sh22:35:011
137812993626,6cyclictest0-21swapper/120:20:281
13780899369,3cyclictest213473-21mailstats22:45:220
137808993626,7cyclictest245386-21sendmail00:20:000
137808993626,7cyclictest245386-21sendmail00:20:000
13780899361,9cyclictest169910-21tune2fs20:40:170
13780899361,6cyclictest204-21dbus-daemon21:07:330
13780899361,6cyclictest204-21dbus-daemon21:07:330
13780899360,13cyclictest0-21swapper/020:00:180
137821993524,7cyclictest0-21swapper/319:15:293
137817993528,5cyclictest219804-21kworker/u8:1+events_unbound23:37:552
137817993516,7cyclictest131rcu_preempt22:40:122
137817993516,5cyclictest131rcu_preempt23:30:102
137812993527,4cyclictest0-21swapper/121:22:401
137812993527,4cyclictest0-21swapper/119:27:181
13780899358,5cyclictest174247-1kworker/0:1H+mmc_complete21:55:000
13780899358,4cyclictest199906-21grep22:05:260
13780899351,7cyclictest229577-21unixbench_singl23:30:230
137808993512,3cyclictest0-21swapper/000:05:000
13780899351,10cyclictest158102-21ntpq20:05:210
137821993426,4cyclictest200629-21apt-key22:10:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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