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2026-06-22 - 23:31

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 Mon Jun 22, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2692921160,2sleep20-21swapper/208:58:142
2692921160,2sleep20-21swapper/208:58:142
2692921160,2sleep20-21swapper/208:58:142
2692921160,2sleep20-21swapper/208:58:142
2787821120,3sleep30-21swapper/310:28:033
2787821120,3sleep30-21swapper/310:28:033
2787821120,3sleep30-21swapper/310:28:033
246521100,2sleep30-21swapper/310:43:233
246521100,2sleep30-21swapper/310:43:233
246521100,2sleep30-21swapper/310:43:233
433821020,2chrt4335-21bingrep09:23:160
433821020,2chrt4335-21bingrep09:23:160
220462910,2sleep30-21swapper/311:38:143
220462910,2sleep30-21swapper/311:38:143
11582850,3chrt0-21swapper/207:48:192
11582850,3chrt0-21swapper/207:48:192
172822830,2chrt0-21swapper/208:33:092
172822830,2chrt0-21swapper/208:33:092
172822830,2chrt0-21swapper/208:33:092
146572750,2sleep30-21swapper/308:23:213
146572750,2sleep30-21swapper/308:23:213
164092740,3sleep30-21swapper/311:23:113
164092740,3sleep30-21swapper/311:23:113
143132730,3sleep20-21swapper/208:23:162
143132730,3sleep20-21swapper/208:23:162
156602670,3sleep30-21swapper/309:53:183
156602670,3sleep30-21swapper/309:53:183
156602670,3sleep30-21swapper/309:53:183
265742660,2sleep126739-21unixbench-2d11:48:231
265742660,2sleep126739-21unixbench-2d11:48:231
282502640,2sleep10-21swapper/110:28:141
282502640,2sleep10-21swapper/110:28:141
118682630,5sleep30-21swapper/309:43:173
118682630,5sleep30-21swapper/309:43:173
118682630,5sleep30-21swapper/309:43:173
134312590,2sleep30-21swapper/311:13:223
134312590,2sleep30-21swapper/311:13:223
134312590,2sleep30-21swapper/311:13:223
211442560,3sleep30-21swapper/308:43:113
211442560,3sleep30-21swapper/308:43:113
211442560,3sleep30-21swapper/308:43:113
138642550,3chrt0-21swapper/312:43:113
138642550,3chrt0-21swapper/312:43:113
138642550,3chrt0-21swapper/312:43:113
137162550,3sleep00-21swapper/012:43:080
137162550,3sleep00-21swapper/012:43:080
137162550,3sleep00-21swapper/012:43:080
61702530,2sleep20-21swapper/209:28:172
61702530,2sleep20-21swapper/209:28:172
255132510,3sleep20-21swapper/207:28:132
141072460,8sleep0171ktimers/008:23:140
141072460,8sleep0171ktimers/008:23:140
119712440,6sleep111974-21fschecks_time08:18:131
119712440,6sleep111974-21fschecks_time08:18:131
291362420,2sleep20-21swapper/207:38:102
291362420,2sleep20-21swapper/207:38:102
75722400,3chrt0-21swapper/008:05:290
75722400,3chrt0-21swapper/008:05:290
75722400,3chrt0-21swapper/008:05:290
32142400,3sleep20-21swapper/207:53:212
32142400,3sleep20-21swapper/207:53:212
94492350,4sleep19453-21fschecks_count09:38:131
94492350,4sleep19453-21fschecks_count09:38:131
274272350,3sleep10-21swapper/110:23:231
274272350,3sleep10-21swapper/110:23:231
274272350,3sleep10-21swapper/110:23:231
19948993528,5cyclictest550-21cron09:23:011
19948993528,5cyclictest550-21cron09:23:011
19948993528,5cyclictest550-21cron09:23:011
237942340,2sleep123975-21idleruntime07:23:141
237942340,2sleep123975-21idleruntime07:23:141
237942340,2sleep123975-21idleruntime07:23:141
19948993425,7cyclictest1311-21needreboot12:08:181
19948993425,7cyclictest1311-21needreboot12:08:181
19948993425,7cyclictest1311-21needreboot12:08:181
19947993427,5cyclictest7112-21gltestperf10:58:140
19947993427,5cyclictest7112-21gltestperf10:58:140
19947993423,8cyclictest13334-21gltestperf09:48:130
19947993423,8cyclictest13334-21gltestperf09:48:130
292542330,3chrt0-21swapper/310:28:243
292542330,3chrt0-21swapper/310:28:243
290992330,3sleep3431rcuc/311:58:003
290992330,3sleep3431rcuc/311:58:003
225992330,2sleep022783-21gltestperf10:13:140
225992330,2sleep022783-21gltestperf10:13:140
19948993325,6cyclictest21068-21kernelversion10:08:161
19948993325,6cyclictest21068-21kernelversion10:08:161
19947993326,5cyclictest14730-21latency_hist09:53:040
19947993326,5cyclictest14730-21latency_hist09:53:040
19947993319,4cyclictest181rcu_preempt10:45:410
19947993319,4cyclictest181rcu_preempt10:45:410
19947993319,4cyclictest181rcu_preempt10:45:410
13492330,3sleep01350-21fschecks_count10:43:120
13492330,3sleep01350-21fschecks_count10:43:120
281252320,3chrt0-21swapper/211:53:172
281252320,3chrt0-21swapper/211:53:172
1994799329,4cyclictest171ktimers/011:41:030
1994799329,4cyclictest171ktimers/011:41:030
1994799328,5cyclictest171ktimers/012:01:140
1994799328,5cyclictest171ktimers/012:01:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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