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2026-04-25 - 14:48

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 Sat Apr 25, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319182880,3sleep30-21swapper/309:57:253
319182880,3sleep30-21swapper/309:57:253
319182880,3sleep30-21swapper/309:57:253
6122790,3chrt0-21swapper/208:32:302
6122790,3chrt0-21swapper/208:32:302
311872730,7sleep131185-21grep08:27:311
311872730,7sleep131185-21grep08:27:311
30042720,3chrt0-21swapper/110:07:201
30042720,3chrt0-21swapper/110:07:201
30042720,3chrt0-21swapper/110:07:201
193522710,3sleep10-21swapper/109:22:301
193522710,3sleep10-21swapper/109:22:301
193522710,3sleep10-21swapper/109:22:301
193522710,3sleep10-21swapper/109:22:301
156022670,3sleep30-21swapper/312:07:233
156022670,3sleep30-21swapper/312:07:233
194982600,3sleep119501-21cpuspeed10:52:191
194982600,3sleep119501-21cpuspeed10:52:191
194982600,3sleep119501-21cpuspeed10:52:191
73102590,3sleep30-21swapper/307:27:073
73102590,3sleep30-21swapper/307:27:073
316642580,3sleep30-21swapper/311:22:323
316642580,3sleep30-21swapper/311:22:323
93132530,2sleep09323-21latency_hist11:52:080
93132530,2sleep09323-21latency_hist11:52:080
93132530,2sleep09323-21latency_hist11:52:080
215822520,3sleep10-21swapper/112:22:281
215822520,3sleep10-21swapper/112:22:281
270332490,2sleep10-21swapper/112:37:271
270332490,2sleep10-21swapper/112:37:271
2028994926,20cyclictest0-21swapper/110:27:071
2028994926,20cyclictest0-21swapper/110:27:071
2028994926,20cyclictest0-21swapper/110:27:071
129942480,4chrt0-21swapper/307:42:103
129942480,4chrt0-21swapper/307:42:103
165192460,2sleep30-21swapper/310:42:283
165192460,2sleep30-21swapper/310:42:283
165192460,2sleep30-21swapper/310:42:283
205322440,2sleep10-21swapper/112:22:071
205322440,2sleep10-21swapper/112:22:071
202899440,4cyclictest700-21192.168.115.40-manager07:23:251
202899440,4cyclictest700-21192.168.115.40-manager07:23:251
270532430,2sleep10-21swapper/111:12:221
270532430,2sleep10-21swapper/111:12:221
248952420,2sleep10-21swapper/109:37:311
248952420,2sleep10-21swapper/109:37:311
115582420,3chrt0-21swapper/311:57:213
115582420,3chrt0-21swapper/311:57:213
115582420,3chrt0-21swapper/311:57:213
195632410,3sleep20-21swapper/210:52:202
195632410,3sleep20-21swapper/210:52:202
156362410,3chrt0-21swapper/209:12:302
156362410,3chrt0-21swapper/209:12:302
145632410,3sleep30-21swapper/309:12:203
145632410,3sleep30-21swapper/309:12:203
202899401,3cyclictest0-21swapper/112:12:321
202899400,4cyclictest700-21192.168.115.40-manager11:05:061
202899400,4cyclictest700-21192.168.115.40-manager11:05:061
129042400,8sleep112907-21gltestperf09:07:231
129042400,8sleep112907-21gltestperf09:07:231
202899390,4cyclictest700-21192.168.115.40-manager07:40:381
202899390,4cyclictest700-21192.168.115.40-manager07:40:381
101692390,3sleep20-21swapper/211:52:262
101692390,3sleep20-21swapper/211:52:262
266802380,2chrt26683-21if_eth008:17:221
266802380,2chrt26683-21if_eth008:17:221
266802380,2chrt26683-21if_eth008:17:221
202899387,28cyclictest13611-21if_wlan007:42:211
202899387,28cyclictest13611-21if_wlan007:42:211
202899381,8cyclictest28511-21sed09:47:281
202899381,8cyclictest28511-21sed09:47:281
202899375,28cyclictest15074-21basename12:07:181
202899375,28cyclictest15074-21basename12:07:181
202899372,12cyclictest26420-21taskset09:42:271
202899372,12cyclictest26420-21taskset09:42:271
202899372,12cyclictest26420-21taskset09:42:271
202899371,8cyclictest25851-21taskset12:34:041
202899371,8cyclictest25851-21taskset12:34:041
2028993717,18cyclictest0-21swapper/107:47:301
2028993717,18cyclictest0-21swapper/107:47:301
2028993717,18cyclictest0-21swapper/107:47:301
202899371,3cyclictest700-21192.168.115.40-manager08:14:141
202899366,28cyclictest14947-21sed10:37:301
202899366,28cyclictest14947-21sed10:37:301
202899361,7cyclictest22519-21/usr/sbin/munin08:07:291
202899361,7cyclictest22519-21/usr/sbin/munin08:07:291
202899361,12cyclictest10612-21irqstats10:27:231
202899361,12cyclictest10612-21irqstats10:27:231
202899361,11cyclictest29505-21df09:52:221
202899361,11cyclictest29505-21df09:52:221
202899360,4cyclictest700-21192.168.115.40-manager11:23:191
202899360,4cyclictest700-21192.168.115.40-manager11:23:191
202899360,4cyclictest700-21192.168.115.40-manager10:00:451
202899360,4cyclictest700-21192.168.115.40-manager10:00:451
202899360,4cyclictest700-21192.168.115.40-manager10:00:451
202899360,4cyclictest700-21192.168.115.40-manager08:36:121
202899360,4cyclictest700-21192.168.115.40-manager08:36:121
2027993627,7cyclictest30704-21netstat08:27:260
2027993627,7cyclictest30704-21netstat08:27:260
2027993627,7cyclictest25557-21kernelversion11:07:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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