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2026-06-22 - 11:23

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 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260362830,7sleep0201rcuc/022:38:190
260362830,7sleep0201rcuc/022:38:190
260362830,7sleep0201rcuc/022:38:190
11212680,3chrt0-21swapper/221:33:122
11212680,3chrt0-21swapper/221:33:122
245762660,3sleep00-21swapper/019:43:070
245762660,3sleep00-21swapper/019:43:070
269372650,2chrt26929-21timerandwakeup21:13:211
269372650,2chrt26929-21timerandwakeup21:13:211
272582580,2sleep20-21swapper/222:43:112
272582580,2sleep20-21swapper/222:43:112
272582580,2sleep20-21swapper/222:43:112
112112540,3chrt0-21swapper/221:58:212
112112540,3chrt0-21swapper/221:58:212
112112540,3chrt0-21swapper/221:58:212
173132500,1sleep00-21swapper/023:43:110
173132500,1sleep00-21swapper/023:43:110
13458995045,3cyclictest0-21swapper/000:03:080
13458995045,3cyclictest0-21swapper/000:03:080
13458995045,3cyclictest0-21swapper/000:03:080
13458995044,4cyclictest24738-21/usr/sbin/munin00:03:170
13458995044,4cyclictest24738-21/usr/sbin/munin00:03:170
13458995044,4cyclictest24738-21/usr/sbin/munin00:03:170
214962460,2chrt0-21swapper/220:58:232
225502450,2sleep00-21swapper/019:38:010
225502450,2sleep00-21swapper/019:38:010
45082440,3sleep10-21swapper/121:43:001
45082440,3sleep10-21swapper/121:43:001
28152440,2chrt0-21swapper/200:28:242
28152440,2chrt0-21swapper/200:28:242
28152440,2chrt0-21swapper/200:28:242
100412400,2sleep00-21swapper/023:23:130
100412400,2sleep00-21swapper/023:23:130
181692390,5sleep118168-21threads19:23:231
209392380,3sleep10-21swapper/123:53:051
209392380,3sleep10-21swapper/123:53:051
209392380,3sleep10-21swapper/123:53:051
72882360,2sleep07430-21fschecks_time20:23:130
72882360,2sleep07430-21fschecks_time20:23:130
1346999361,25cyclictest24717-21chrt00:03:083
1346999361,25cyclictest24717-21chrt00:03:083
1346999361,25cyclictest24717-21chrt00:03:083
306282350,2chrt0-21swapper/300:18:123
306282350,2chrt0-21swapper/300:18:123
306282350,2chrt0-21swapper/300:18:123
22922340,1sleep00-21swapper/020:08:200
22922340,1sleep00-21swapper/020:08:200
217752340,3sleep20-21swapper/219:33:212
217752340,3sleep20-21swapper/219:33:212
13467993424,8cyclictest29785-21unixbench_singl00:13:241
13467993424,8cyclictest29785-21unixbench_singl00:13:241
13467993424,8cyclictest29785-21unixbench_singl00:13:241
13458993428,4cyclictest13441-21cyclictest20:18:000
13458993428,4cyclictest13441-21cyclictest20:18:000
13458993428,4cyclictest13441-21cyclictest20:18:000
13467993329,2cyclictest0-21swapper/100:03:001
13467993329,2cyclictest0-21swapper/100:03:001
13467993329,2cyclictest0-21swapper/100:03:001
13458993328,3cyclictest30707-21kernelversion19:58:150
13458993328,3cyclictest30707-21kernelversion19:58:150
13458993324,7cyclictest12935-21netstat22:03:180
13458993324,7cyclictest12935-21netstat22:03:180
13458993324,7cyclictest12935-21netstat22:03:180
13467993224,6cyclictest17585-21cut23:43:131
13467993224,6cyclictest17585-21cut23:43:131
13467993223,7cyclictest31105-21netstat00:18:171
13467993223,7cyclictest31105-21netstat00:18:171
13467993223,7cyclictest31105-21netstat00:18:171
13458993223,7cyclictest1210-21fschecks_time21:33:130
13458993223,7cyclictest1210-21fschecks_time21:33:130
6512310,2sleep1654-21proc_pri00:23:201
6512310,2sleep1654-21proc_pri00:23:201
1346899313,23cyclictest24698-21chrt00:03:072
1346899313,23cyclictest24698-21chrt00:03:072
1346899313,23cyclictest24698-21chrt00:03:072
13467993127,3cyclictest11992-21sh22:03:001
13467993127,3cyclictest11992-21sh22:03:001
13467993127,3cyclictest11992-21sh22:03:001
13467993126,3cyclictest6312-21fschecks_time23:13:141
13467993126,3cyclictest6312-21fschecks_time23:13:141
13458993127,3cyclictest13441-21cyclictest20:57:590
13458993127,3cyclictest13441-21cyclictest20:57:590
13458993126,4cyclictest23047-21sendmail_mailqu21:03:190
13458993126,4cyclictest23047-21sendmail_mailqu21:03:190
13458993125,4cyclictest18986-21latency_hist23:48:120
13458993122,6cyclictest749-21runrttasks19:53:140
13458993122,6cyclictest749-21runrttasks19:53:140
13469993024,3cyclictest0-21swapper/323:36:563
13469993024,3cyclictest0-21swapper/323:36:563
13469993024,3cyclictest0-21swapper/323:36:563
13469993019,7cyclictest19226-21chrt22:19:373
13469993019,7cyclictest19226-21chrt22:19:373
13469993017,8cyclictest27539-21chrt21:17:543
13469993017,8cyclictest27539-21chrt21:17:543
13467993024,4cyclictest1346-21avahi-daemon22:53:221
13467993024,4cyclictest1346-21avahi-daemon22:53:221
13467993024,4cyclictest1346-21avahi-daemon22:53:221
13467993023,5cyclictest15036-21gltestperf20:43:121
13467993023,5cyclictest15036-21gltestperf20:43:121
13467993021,7cyclictest28477-21netstat21:18:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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