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2026-06-10 - 06:24

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 Wed Jun 10, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272902930,3sleep20-21swapper/223:08:032
272902930,3sleep20-21swapper/223:08:032
303302710,3chrt0-21swapper/121:48:111
303302710,3chrt0-21swapper/121:48:111
51362700,3sleep30-21swapper/320:43:003
51362700,3sleep30-21swapper/320:43:003
53232630,7sleep1281ktimers/120:43:021
53232630,7sleep1281ktimers/120:43:021
238642630,5sleep123869-21unixbench_multi00:23:121
238642630,5sleep123869-21unixbench_multi00:23:121
10922620,2chrt0-21swapper/121:58:031
162902570,3chrt0-21swapper/100:03:141
162902570,3chrt0-21swapper/100:03:141
162902570,3chrt0-21swapper/100:03:141
35342540,2chrt3537-21idleruntime20:38:041
35342540,2chrt3537-21idleruntime20:38:041
220782540,3sleep129-21ksoftirqd/122:53:071
220782540,3sleep129-21ksoftirqd/122:53:071
220782540,3sleep129-21ksoftirqd/122:53:071
193522480,3sleep10-21swapper/122:47:521
193522480,3sleep10-21swapper/122:47:521
4146994736,7cyclictest0-21swapper/000:02:550
4146994736,7cyclictest0-21swapper/000:02:550
4146994736,7cyclictest0-21swapper/000:02:550
326432470,3chrt0-21swapper/123:23:021
326432470,3chrt0-21swapper/123:23:021
326432470,3chrt0-21swapper/123:23:021
98712430,2sleep110073-21sed20:53:121
98712430,2sleep110073-21sed20:53:121
51332400,3sleep30-21swapper/322:08:063
51332400,3sleep30-21swapper/322:08:063
197022400,13sleep1281ktimers/119:53:091
197022400,13sleep1281ktimers/119:53:091
299762390,3sleep00-21swapper/000:42:540
299762390,3sleep00-21swapper/000:42:540
260202390,2sleep30-21swapper/321:38:033
260202390,2sleep30-21swapper/321:38:033
81752370,2sleep10-21swapper/119:23:061
81752370,2sleep10-21swapper/119:23:061
4146993727,6cyclictest0-21swapper/000:03:480
4146993727,6cyclictest0-21swapper/000:03:480
4146993727,6cyclictest0-21swapper/000:03:480
4147993630,5cyclictest14173-21threads19:38:131
4147993630,5cyclictest14173-21threads19:38:131
414999351,24cyclictest15077-21chrt00:02:552
414999351,24cyclictest15077-21chrt00:02:552
414999351,24cyclictest15077-21chrt00:02:552
81872330,1sleep2351rcuc/219:23:072
81872330,1sleep2351rcuc/219:23:072
4147993322,2cyclictest181rcu_preempt22:40:311
4146993326,5cyclictest22317-21switchtime22:53:100
4146993326,5cyclictest22317-21switchtime22:53:100
4146993326,5cyclictest22317-21switchtime22:53:100
4147993225,5cyclictest25667-21/usr/sbin/munin21:38:091
4147993225,5cyclictest25667-21/usr/sbin/munin21:38:091
4147993225,5cyclictest2263-21fschecks_time23:28:021
4147993225,5cyclictest2263-21fschecks_time23:28:021
4147993225,5cyclictest10325-21cut22:23:021
4146993227,3cyclictest1805-21latency_hist23:28:030
4146993225,5cyclictest31711-21threads23:18:120
4146993225,5cyclictest31711-21threads23:18:120
4146993225,5cyclictest31711-21threads23:18:120
4146993225,5cyclictest25338-21fschecks_time23:03:020
4146993225,5cyclictest25338-21fschecks_time23:03:020
4146993225,5cyclictest25338-21fschecks_time23:03:020
4146993224,6cyclictest27885-21latency_hist20:17:490
4146993224,6cyclictest27885-21latency_hist20:17:490
39672320,4sleep30-21swapper/323:33:013
39672320,4sleep30-21swapper/323:33:013
39672320,4sleep30-21swapper/323:33:013
64942310,3sleep30-21swapper/323:38:073
64942310,3sleep30-21swapper/323:38:073
64942310,3sleep30-21swapper/323:38:073
4147993124,5cyclictest14166-21gltestperf22:33:031
4147993124,5cyclictest14166-21gltestperf22:33:031
414799311,3cyclictest700-21192.168.115.40-manager23:45:021
414799311,3cyclictest700-21192.168.115.40-manager23:45:021
414799311,3cyclictest700-21192.168.115.40-manager23:45:021
4146993125,4cyclictest545-21in:imuxsock21:38:020
4146993125,4cyclictest545-21in:imuxsock21:38:020
4146993124,5cyclictest23037-21head00:23:020
4146993124,5cyclictest23037-21head00:23:020
4146993123,6cyclictest22123-21fschecks_count21:28:020
4146993123,6cyclictest22123-21fschecks_count21:28:020
4146993123,6cyclictest22123-21fschecks_count21:28:020
4146993122,7cyclictest2866-21fschecks_time22:03:010
4146993122,7cyclictest2866-21fschecks_time22:03:010
4146993122,7cyclictest2866-21fschecks_time22:03:010
414799308,4cyclictest281ktimers/120:13:271
414799308,4cyclictest281ktimers/120:13:271
4147993026,3cyclictest90-1pr/ttyS020:48:281
4147993026,3cyclictest90-1pr/ttyS020:48:281
4147993025,4cyclictest19857-21sendmail21:22:491
4147993025,4cyclictest19857-21sendmail21:22:491
4147993025,4cyclictest19857-21sendmail21:22:491
4146993025,4cyclictest8018-21cut23:43:030
4146993025,4cyclictest8018-21cut23:43:030
4146993023,5cyclictest8480-21processes23:43:100
4146993023,5cyclictest8480-21processes23:43:100
4146993023,5cyclictest8480-21processes23:43:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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