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2025-12-11 - 18:49

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 Thu Dec 11, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91121100,2chrt0-21swapper/307:49:053
91121100,2chrt0-21swapper/307:49:053
265012900,3chrt0-21swapper/208:54:172
265012900,3chrt0-21swapper/208:54:172
179662880,4sleep30-21swapper/309:59:103
275252760,3chrt0-21swapper/208:59:112
275252760,3chrt0-21swapper/208:59:112
258852740,3sleep30-21swapper/308:54:103
258852740,3sleep30-21swapper/308:54:103
58272680,4sleep05831-21fschecks_count10:54:060
58272680,4sleep05831-21fschecks_count10:54:060
8532540,2sleep20-21swapper/212:04:192
8532540,2sleep20-21swapper/212:04:192
285972530,3sleep00-21swapper/007:34:150
46182520,8sleep0171ktimers/012:14:170
46182520,8sleep0171ktimers/012:14:170
8632510,3sleep0865-21if_eth009:14:080
8632510,3sleep0865-21if_eth009:14:080
171992500,3sleep10-21swapper/109:58:561
171992500,3sleep10-21swapper/109:58:561
176372490,1sleep20-21swapper/211:24:112
176372490,1sleep20-21swapper/211:24:112
20207994620,5cyclictest0-21swapper/011:23:540
20207994620,5cyclictest0-21swapper/011:23:540
253812430,3chrt0-21swapper/010:19:090
14872430,4sleep01479-21/usr/sbin/munin12:09:070
14872430,4sleep01479-21/usr/sbin/munin12:09:070
81842410,2sleep18154-21missed_timers10:59:091
81842410,2sleep18154-21missed_timers10:59:091
48712410,3chrt0-21swapper/107:59:081
223752410,3chrt0-21swapper/211:38:542
223752410,3chrt0-21swapper/211:38:542
276092390,2sleep027723-21mailstats10:24:160
276092390,2sleep027723-21mailstats10:24:160
235422390,3sleep20-21swapper/208:49:062
235422390,3sleep20-21swapper/208:49:062
157292390,2sleep115770-21/usr/sbin/munin11:19:121
157292390,2sleep115770-21/usr/sbin/munin11:19:121
313712370,2sleep031374-21unixbench_singl11:59:180
313712370,2sleep031374-21unixbench_singl11:59:180
299252370,2sleep00-21swapper/011:58:540
299252370,2sleep00-21swapper/011:58:540
266582370,5sleep0171ktimers/011:49:090
266582370,5sleep0171ktimers/011:49:090
20208993731,4cyclictest20205-21cyclictest10:29:181
192452370,2chrt19243-21cat10:04:021
20208993627,7cyclictest12840-21netstat08:19:121
20208993627,7cyclictest12840-21netstat08:19:121
20207993630,4cyclictest20205-21cyclictest09:44:070
20207993630,4cyclictest20205-21cyclictest09:44:070
306682350,2sleep30-21swapper/307:39:173
306682350,2sleep30-21swapper/307:39:173
263372350,2sleep126498-21unixbench_multi08:54:171
263372350,2sleep126498-21unixbench_multi08:54:171
20208993526,7cyclictest14633-21threads09:49:171
20208993526,7cyclictest14633-21threads09:49:171
20207993527,5cyclictest4135-21gltestperf10:49:080
20207993527,5cyclictest4135-21gltestperf10:49:080
110782350,1sleep011095-21awk11:08:540
110782350,1sleep011095-21awk11:08:540
283152340,3sleep30-21swapper/308:59:203
283152340,3sleep30-21swapper/308:59:203
20207993429,3cyclictest19441-21cron08:38:540
20207993429,3cyclictest19441-21cron08:38:540
304422330,3sleep30-21swapper/310:33:593
20208993327,4cyclictest480-21sshd12:16:221
20208993327,4cyclictest480-21sshd12:16:221
20208993326,5cyclictest21124-21latency_hist10:09:031
20208993326,5cyclictest21124-21latency_hist10:09:031
20207993320,11cyclictest480-21sshd10:06:210
20207993320,11cyclictest480-21sshd10:06:210
20208993227,4cyclictest20205-21cyclictest10:24:021
20208993225,5cyclictest626-21latency_hist07:48:531
20208993214,4cyclictest91-1pr/ttyS012:31:111
20207993222,7cyclictest12717-21latency_hist12:39:020
310332310,2sleep10-21swapper/110:34:101
310332310,2sleep10-21swapper/110:34:101
20208993124,5cyclictest20205-21cyclictest12:19:081
20208993124,5cyclictest20205-21cyclictest12:19:081
20208993123,6cyclictest28344-21netstat07:34:121
2020899311,6cyclictest14404-21192.168.115.40-manager12:43:431
2020899311,6cyclictest14404-21192.168.115.40-manager12:43:431
2020899311,6cyclictest14404-21192.168.115.40-manager12:43:431
20208993110,3cyclictest181rcu_preempt10:48:391
20208993110,3cyclictest181rcu_preempt10:48:391
20207993126,3cyclictest8335-21gltestperf09:34:080
20207993126,3cyclictest8335-21gltestperf09:34:080
20207993123,6cyclictest23213-21fschecks_count10:14:060
20207993123,6cyclictest23213-21fschecks_count10:14:060
20207993123,6cyclictest23213-21fschecks_count10:14:060
326412300,1sleep10-21swapper/110:39:081
326412300,1sleep10-21swapper/110:39:081
20208993024,4cyclictest480-21sshd12:01:231
20208993024,4cyclictest480-21sshd12:01:231
20207993023,5cyclictest8060-21latency10:59:080
20207993023,5cyclictest8060-21latency10:59:080
66262290,1sleep06786-21fw_packets08:04:070
66262290,1sleep06786-21fw_packets08:04:070
20208992923,5cyclictest20414-21ntp_offset08:39:141
20207992922,5cyclictest672-21needreboot10:39:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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