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2025-12-12 - 10:58

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 Dec 12, 2025 00:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
503321350,2sleep15037-21latency_hist23:54:021
503321350,2sleep15037-21latency_hist23:54:021
295982730,2chrt29597-21sshd23:32:031
295982730,2chrt29597-21sshd23:32:031
25722680,3chrt2575-21unixbench_singl23:44:171
25722680,3chrt2575-21unixbench_singl23:44:171
47142540,2chrt4705-21timerwakeupswit22:24:170
9892470,1sleep2351rcuc/219:24:102
12572450,2chrt0-21swapper/019:24:120
63022440,6sleep16305-21grep23:54:181
14312430,3sleep30-21swapper/319:24:153
29348993933,4cyclictest8149-21unixbench_multi23:59:210
29348993933,4cyclictest8149-21unixbench_multi23:59:210
29348993832,4cyclictest20325-21fschecks_count00:34:110
29348993832,4cyclictest20325-21fschecks_count00:34:110
85622370,6sleep18567-21unixbench_multi22:34:231
85622370,6sleep18567-21unixbench_multi22:34:231
33092360,2sleep03401-21cut23:49:070
33092360,2sleep03401-21cut23:49:070
29348993326,5cyclictest30576-21wc20:43:540
29349993122,7cyclictest19501-21processes23:04:191
29349993122,7cyclictest19501-21processes23:04:191
29348993125,4cyclictest0-21swapper/022:49:100
29348993125,4cyclictest0-21swapper/022:49:100
132712310,1chrt0-21swapper/000:14:150
132712310,1chrt0-21swapper/000:14:150
29349993024,4cyclictest663-21runrttasks20:19:091
29349993022,6cyclictest2339-21latency_hist19:28:541
29349993016,2cyclictest181rcu_preempt20:59:101
29349993016,2cyclictest181rcu_preempt20:59:101
29348993025,3cyclictest0-21swapper/023:54:090
29348993025,3cyclictest0-21swapper/020:34:080
29348993024,4cyclictest407-21in:imuxsock20:18:550
29348993024,4cyclictest10046-21cut21:14:080
29348993024,4cyclictest10046-21cut21:14:080
29348993024,4cyclictest0-21swapper/021:34:210
29348993024,4cyclictest0-21swapper/021:34:210
29348993023,5cyclictest4668-21needreboot20:59:130
29348993023,5cyclictest4668-21needreboot20:59:130
29348993022,6cyclictest21699-21netstat21:44:140
29348993022,6cyclictest21699-21netstat21:44:140
29348993022,6cyclictest13963-21kernelversion21:24:130
29349992923,5cyclictest15772-21rt-features22:54:191
29349992923,5cyclictest15772-21rt-features22:54:191
29349992923,4cyclictest480-21sshd19:36:041
29349992923,4cyclictest480-21sshd19:36:041
29349992923,4cyclictest29345-21cyclictest20:54:091
29349992922,5cyclictest383-21cron20:28:551
29349992922,5cyclictest383-21cron20:28:551
29349992922,5cyclictest11332-21latency_hist21:18:541
29349992922,5cyclictest11332-21latency_hist21:18:541
29349992920,6cyclictest13455-21latency_hist21:24:031
29348992924,3cyclictest29345-21cyclictest21:09:230
29348992924,3cyclictest29345-21cyclictest21:09:230
29348992924,3cyclictest0-21swapper/022:14:120
29348992924,3cyclictest0-21swapper/022:14:120
29348992922,5cyclictest0-21swapper/023:04:210
29348992922,5cyclictest0-21swapper/023:04:210
29348992913,13cyclictest0-21swapper/021:49:040
29348992913,13cyclictest0-21swapper/021:49:040
29349992824,3cyclictest8561-21cut19:44:091
29349992824,3cyclictest8561-21cut19:44:091
29349992821,5cyclictest21733-21sshd00:38:141
29349992821,5cyclictest21733-21sshd00:38:141
29349992820,6cyclictest7102-21fschecks_count23:59:101
29349992820,6cyclictest7102-21fschecks_count23:59:101
29349992820,6cyclictest26761-21fschecks_count21:59:111
29349992819,6cyclictest30380-21latency_hist22:09:031
29349992814,3cyclictest0-21swapper/120:39:111
29348992823,3cyclictest0-21swapper/023:43:540
29348992823,3cyclictest0-21swapper/023:43:540
29348992821,6cyclictest5942-21sshd19:37:040
29348992821,6cyclictest5942-21sshd19:37:040
29348992821,5cyclictest26811-21latency_hist20:33:540
29348992821,5cyclictest26811-21latency_hist20:33:540
29348992820,6cyclictest29451-21sshd23:30:120
29348992820,6cyclictest29451-21sshd23:30:120
29349992723,2cyclictest0-21swapper/100:13:541
29349992723,2cyclictest0-21swapper/100:13:541
29349992721,4cyclictest19313-21latency_hist20:13:551
29349992721,4cyclictest19313-21latency_hist20:13:551
29349992720,5cyclictest9436-21fschecks_count22:39:071
29349992720,5cyclictest9436-21fschecks_count22:39:071
29349992720,5cyclictest17427-21fschecks_time21:34:081
29349992720,5cyclictest17427-21fschecks_time21:34:081
29349992717,7cyclictest24301-21latency_hist23:19:031
29348992723,2cyclictest0-21swapper/020:19:170
29348992722,3cyclictest0-21swapper/000:33:540
29348992722,3cyclictest0-21swapper/000:33:540
29348992721,5cyclictest2214-21kernelversion22:19:120
29348992721,5cyclictest2214-21kernelversion22:19:120
29348992721,4cyclictest0-21swapper/000:09:090
29348992721,4cyclictest0-21swapper/000:09:090
29348992720,5cyclictest2699-21fschecks_count19:29:070
29352992612,11cyclictest18557-21chrt20:09:173
29352992612,11cyclictest18557-21chrt20:09:173
29349992622,3cyclictest19431-21gltestperf21:39:061
29349992620,5cyclictest19858-21sshd00:33:141
29349992620,5cyclictest19858-21sshd00:33:141
29349992620,4cyclictest26721-21kernelversion23:24:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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