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2026-06-19 - 07:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 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 rack4slot1s.osadl.org (updated Fri Jun 19, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65142950,2chrt0-21swapper/321:03:143
65142950,2chrt0-21swapper/321:03:143
206992930,3sleep30-21swapper/323:08:123
206992930,3sleep30-21swapper/323:08:123
206992930,3sleep30-21swapper/323:08:123
64342770,3sleep20-21swapper/221:03:132
64342770,3sleep20-21swapper/221:03:132
29944997261,8cyclictest8838-21grep00:03:120
29944997261,8cyclictest8838-21grep00:03:120
29944997261,8cyclictest8838-21grep00:03:120
175182660,3sleep00-21swapper/020:08:000
175182660,3sleep00-21swapper/020:08:000
248182630,3chrt24821-21fschecks_time21:53:080
248182630,3chrt24821-21fschecks_time21:53:080
248182630,3chrt24821-21fschecks_time21:53:080
202102580,1sleep00-21swapper/021:38:210
202102580,1sleep00-21swapper/021:38:210
202102580,1sleep00-21swapper/021:38:210
29944995545,4cyclictest0-21swapper/000:03:030
29944995545,4cyclictest0-21swapper/000:03:030
295142550,2sleep30-21swapper/320:38:143
295142550,2sleep30-21swapper/320:38:143
65632540,3sleep20-21swapper/222:28:192
65632540,3sleep20-21swapper/222:28:192
3772480,2chrt0-21swapper/320:48:113
3772480,2chrt0-21swapper/320:48:113
29712460,4sleep12968-21df_inode23:48:101
140962460,3sleep00-21swapper/021:23:130
140962460,3sleep00-21swapper/021:23:130
95712450,3sleep30-21swapper/322:38:133
173302450,2chrt0-21swapper/022:58:160
173302450,2chrt0-21swapper/022:58:160
246372440,3sleep30-21swapper/320:24:073
246372440,3sleep30-21swapper/320:24:073
92622430,1sleep10-21swapper/122:38:111
92172420,4chrt0-21swapper/219:43:182
92172420,4chrt0-21swapper/219:43:182
324112410,3sleep00-21swapper/019:18:190
324112410,3sleep00-21swapper/019:18:190
150162410,1sleep015102-21switchtime00:18:210
150162410,1sleep015102-21switchtime00:18:210
228872400,3sleep00-21swapper/021:48:090
228872400,3sleep00-21swapper/021:48:090
228872400,3sleep00-21swapper/021:48:090
228872400,3sleep00-21swapper/021:48:090
29945993730,4cyclictest8493-21latency_hist00:03:091
29945993730,4cyclictest8493-21latency_hist00:03:091
258722370,2chrt25873-21awk20:28:151
258722370,2chrt25873-21awk20:28:151
29945993628,6cyclictest27701-21needreboot20:33:141
29945993628,6cyclictest27701-21needreboot20:33:141
29945993628,6cyclictest27701-21needreboot20:33:141
3192350,2sleep0322-21tail22:13:150
3192350,2sleep0322-21tail22:13:150
3192350,2sleep0322-21tail22:13:150
29945993527,6cyclictest550-21cron20:38:091
29945993527,6cyclictest550-21cron20:38:091
29944993526,7cyclictest8135-21latency_hist19:43:000
29944993526,7cyclictest8135-21latency_hist19:43:000
234672350,2sleep123662-21cut20:23:091
234672350,2sleep123662-21cut20:23:091
29945993428,4cyclictest29916-21cyclictest21:22:581
29945993428,4cyclictest29916-21cyclictest21:22:581
29945993425,7cyclictest29761-21cpuspeed23:33:081
29945993425,7cyclictest29761-21cpuspeed23:33:081
2994599341,25cyclictest8470-21/usr/sbin/munin00:03:231
2994599341,25cyclictest8470-21/usr/sbin/munin00:03:231
2994599341,25cyclictest8470-21/usr/sbin/munin00:03:231
29944993425,7cyclictest26706-21sh23:23:180
29944993425,7cyclictest26706-21sh23:23:180
165552340,2sleep016680-21cpuspeed22:58:090
165552340,2sleep016680-21cpuspeed22:58:090
29944993326,5cyclictest21017-21needreboot23:08:160
29944993326,5cyclictest21017-21needreboot23:08:160
29944993326,5cyclictest21017-21needreboot23:08:160
29944993326,4cyclictest0-21swapper/020:28:180
29944993326,4cyclictest0-21swapper/020:28:180
189032330,2sleep118914-21latency_hist21:38:021
29945993225,5cyclictest749-21runrttasks23:33:121
29945993225,5cyclictest749-21runrttasks23:33:121
29945993225,5cyclictest749-21runrttasks23:33:121
29944993225,5cyclictest31909-21latency_hist22:12:570
29944993225,5cyclictest31909-21latency_hist22:12:570
29944993225,5cyclictest31909-21latency_hist22:12:570
29944993126,4cyclictest12042-21idleruntime-cro00:12:570
29944993126,4cyclictest12042-21idleruntime-cro00:12:570
29944993126,3cyclictest21466-21cpuspeed20:18:080
29944993126,3cyclictest21466-21cpuspeed20:18:080
29944993124,5cyclictest26690-21fschecks_count21:58:100
29944993124,5cyclictest26690-21fschecks_count21:58:100
216972310,2sleep121699-21gltestperf20:18:101
216972310,2sleep121699-21gltestperf20:18:101
2994899301,21cyclictest8399-21chrt00:03:033
2994899301,21cyclictest8399-21chrt00:03:033
29944993024,5cyclictest545-21in:imuxsock23:37:080
29944993024,5cyclictest545-21in:imuxsock23:37:080
29944993024,5cyclictest545-21in:imuxsock23:37:080
29944993023,5cyclictest19892-21sshd23:05:070
29944993023,5cyclictest19892-21sshd23:05:070
29944993023,5cyclictest19892-21sshd23:05:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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