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2026-06-15 - 12:44

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 15, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1097721260,1sleep1271rcuc/120:23:001
1097721260,1sleep1271rcuc/120:23:001
251032640,3sleep30-21swapper/323:53:073
251032640,3sleep30-21swapper/323:53:073
18012620,2chrt0-21swapper/222:48:172
18012620,2chrt0-21swapper/222:48:172
18012620,2chrt0-21swapper/222:48:172
204702610,2chrt0-21swapper/020:48:030
134252610,1sleep013436-21cron23:22:540
134252610,1sleep013436-21cron23:22:540
134252610,1sleep013436-21cron23:22:540
192742540,2sleep30-21swapper/322:08:183
168172530,3sleep20-21swapper/222:03:112
168172530,3sleep20-21swapper/222:03:112
168172530,3sleep20-21swapper/222:03:112
146362530,3sleep30-21swapper/323:23:173
146362530,3sleep30-21swapper/323:23:173
146362530,3sleep30-21swapper/323:23:173
143672530,3sleep20-21swapper/223:23:112
143672530,3sleep20-21swapper/223:23:112
143672530,3sleep20-21swapper/223:23:112
153942520,3sleep20-21swapper/221:58:162
153942520,3sleep20-21swapper/221:58:162
153942520,3sleep20-21swapper/221:58:162
113262510,2sleep00-21swapper/020:23:080
113262510,2sleep00-21swapper/020:23:080
276672490,3sleep127671-21gltestperf22:33:091
276672490,3sleep127671-21gltestperf22:33:091
213622490,4chrt0-21swapper/219:23:072
222362480,2sleep30-21swapper/319:23:163
106222480,2sleep20-21swapper/223:13:102
106222480,2sleep20-21swapper/223:13:102
268552470,1chrt0-21swapper/023:58:060
268552470,1chrt0-21swapper/023:58:060
45152460,2chrt0-21swapper/100:23:161
45152460,2chrt0-21swapper/100:23:161
41872460,3sleep20-21swapper/221:28:172
41872460,3sleep20-21swapper/221:28:172
41872460,3sleep20-21swapper/221:28:172
83632440,2chrt8365-21cat20:13:151
83632440,2chrt8365-21cat20:13:151
81812440,2sleep20-21swapper/223:08:072
81812440,2sleep20-21swapper/223:08:072
50402440,3sleep15003-21cat21:33:071
315572440,3chrt0-21swapper/322:43:083
271922420,3sleep20-21swapper/222:32:582
271922420,3sleep20-21swapper/222:32:582
251032420,4sleep30-21swapper/320:58:153
251032420,4sleep30-21swapper/320:58:153
237262420,3sleep20-21swapper/222:23:052
237262420,3sleep20-21swapper/222:23:052
237262420,3sleep20-21swapper/222:23:052
202532410,2sleep20-21swapper/222:13:082
202532410,2sleep20-21swapper/222:13:082
199592410,4sleep20-21swapper/223:38:102
199592410,4sleep20-21swapper/223:38:102
179292410,2sleep20-21swapper/223:33:092
179292410,2sleep20-21swapper/223:33:092
179292410,2sleep20-21swapper/223:33:092
1766099391,14cyclictest28526-21taskset00:03:003
1766099391,14cyclictest28526-21taskset00:03:003
1766099391,14cyclictest28526-21taskset00:03:003
230102360,2sleep023012-21grep23:48:050
230102360,2sleep023012-21grep23:48:050
17652993631,4cyclictest17650-21cyclictest00:03:091
17652993631,4cyclictest17650-21cyclictest00:03:091
17652993631,4cyclictest17650-21cyclictest00:03:091
17651993622,11cyclictest0-21swapper/019:38:070
304842340,3sleep20-21swapper/200:08:052
304842340,3sleep20-21swapper/200:08:052
304842340,3sleep20-21swapper/200:08:052
246662340,1sleep124695-21sed19:33:041
17651993426,6cyclictest29811-21unixbench-2d00:03:190
17651993426,6cyclictest29811-21unixbench-2d00:03:190
17651993426,6cyclictest29811-21unixbench-2d00:03:190
17651993421,11cyclictest0-21swapper/019:43:050
17651993421,11cyclictest0-21swapper/019:43:050
17652993326,5cyclictest17650-21cyclictest22:03:051
17652993326,5cyclictest17650-21cyclictest22:03:051
17652993326,5cyclictest17650-21cyclictest22:03:051
17652993324,7cyclictest14678-21systemd-journal00:12:541
17652993324,7cyclictest14678-21systemd-journal00:12:541
17652993324,7cyclictest14678-21systemd-journal00:12:541
17651993324,7cyclictest0-21swapper/000:02:590
17651993324,7cyclictest0-21swapper/000:02:590
17651993324,7cyclictest0-21swapper/000:02:590
313612320,3sleep30-21swapper/319:48:173
313612320,3sleep30-21swapper/319:48:173
258392320,3sleep30-21swapper/319:33:173
258392320,3sleep30-21swapper/319:33:173
258392320,3sleep30-21swapper/319:33:173
250262320,3chrt0-21swapper/219:33:082
250262320,3chrt0-21swapper/219:33:082
250262320,3chrt0-21swapper/219:33:082
17652993228,3cyclictest29889-21head00:03:201
17652993228,3cyclictest29889-21head00:03:201
17652993228,3cyclictest29889-21head00:03:201
17652993226,4cyclictest718-21fschecks_time22:48:061
17652993226,4cyclictest718-21fschecks_time22:48:061
17652993225,5cyclictest749-21runrttasks20:33:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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