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2026-09-01 - 05:21

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 Tue Sep 01, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2088421170,3chrt0-21swapper/222:04:072
2088421170,3chrt0-21swapper/222:04:072
1797721110,3sleep20-21swapper/220:29:162
858521080,3chrt0-21swapper/221:29:222
336021040,2chrt3364-21timerwakeupswit21:14:251
336021040,2chrt3364-21timerwakeupswit21:14:251
301442750,3sleep20-21swapper/223:54:182
105012670,3sleep10-21swapper/120:09:171
105012670,3sleep10-21swapper/120:09:171
35682640,3sleep10-21swapper/119:49:231
22474996349,11cyclictest1346-21avahi-daemon00:04:090
22474996349,11cyclictest1346-21avahi-daemon00:04:090
22474996349,11cyclictest1346-21avahi-daemon00:04:090
261122610,1sleep10-21swapper/120:49:251
2247499594,19cyclictest1620-21/usr/sbin/munin00:04:190
22474995120,6cyclictest10396-21memory21:34:210
22474995120,6cyclictest10396-21memory21:34:210
96592500,2sleep20-21swapper/222:59:192
96592500,2sleep20-21swapper/222:59:192
124132490,4sleep30-21swapper/300:34:313
124132490,4sleep30-21swapper/300:34:313
81282470,2sleep18127-21ntp_states00:24:241
81282470,2sleep18127-21ntp_states00:24:241
171712460,2sleep1271rcuc/123:19:191
171712460,2sleep1271rcuc/123:19:191
233572420,3sleep10-21swapper/123:34:271
233572420,3sleep10-21swapper/123:34:271
144292420,2chrt0-21swapper/121:44:241
144292420,2chrt0-21swapper/121:44:241
261972410,3sleep20-21swapper/220:49:262
8582400,3sleep30-21swapper/322:34:273
8582400,3sleep30-21swapper/322:34:273
204952390,3sleep20-21swapper/220:34:232
204952390,3sleep20-21swapper/220:34:232
141642390,3sleep20-21swapper/200:39:282
141642390,3sleep20-21swapper/200:39:282
141642390,3sleep20-21swapper/200:39:282
62082380,3sleep20-21swapper/200:19:222
62082380,3sleep20-21swapper/200:19:222
58152380,3sleep30-21swapper/322:49:193
58152380,3sleep30-21swapper/322:49:193
316112370,3sleep20-21swapper/222:29:282
316112370,3sleep20-21swapper/222:29:282
82732360,3sleep30-21swapper/300:24:263
82732360,3sleep30-21swapper/300:24:263
22475993628,6cyclictest5448-21netstat19:54:221
283912350,2sleep10-21swapper/122:24:081
283912350,2sleep10-21swapper/122:24:081
283912350,2sleep10-21swapper/122:24:081
248682350,2sleep10-21swapper/123:39:221
248682350,2sleep10-21swapper/123:39:221
248682350,2sleep10-21swapper/123:39:221
24472350,1sleep126198-21kworker/u9:3+xprtiod00:04:511
106062350,3sleep30-21swapper/321:34:253
106062350,3sleep30-21swapper/321:34:253
22474993425,7cyclictest6306-21fschecks_time21:24:170
127592340,3sleep20-21swapper/220:14:212
127592340,3sleep20-21swapper/220:14:212
101892340,3sleep126394-21kworker/u10:3+rpciod22:59:261
101892340,3sleep126394-21kworker/u10:3+rpciod22:59:261
22475993326,5cyclictest32156-21latency_hist22:34:101
22475993326,5cyclictest32156-21latency_hist22:34:101
22475993326,5cyclictest27399-21fschecks_count20:54:171
22475993326,5cyclictest27399-21fschecks_count20:54:171
22474993325,6cyclictest19777-21unixbench_multi23:24:260
22474993325,6cyclictest19777-21unixbench_multi23:24:260
22474993225,5cyclictest14251-21needreboot21:44:210
22474993225,5cyclictest14251-21needreboot21:44:210
22474993224,6cyclictest12620-21switchtime21:39:240
22474993224,6cyclictest12620-21switchtime21:39:240
316712310,1sleep131737-21cpuspeed23:59:161
316712310,1sleep131737-21cpuspeed23:59:161
316712310,1sleep131737-21cpuspeed23:59:161
2247699313,24cyclictest1006-21chrt00:04:112
2247699313,24cyclictest1006-21chrt00:04:112
2247699313,24cyclictest1006-21chrt00:04:112
22475993124,5cyclictest773-21apache222:14:191
22475993124,5cyclictest20263-21latency_hist23:29:051
22475993124,5cyclictest20263-21latency_hist23:29:051
22474993123,6cyclictest9023-21apache223:11:340
22474993123,6cyclictest9023-21apache223:11:340
22474993122,7cyclictest7815-21kernelversion22:54:190
22474993122,7cyclictest7815-21kernelversion22:54:190
11132310,3sleep1271rcuc/121:09:231
11132310,3sleep1271rcuc/121:09:231
22475993026,3cyclictest22473-21cyclictest21:29:161
22475993026,3cyclictest13306-21latency_hist21:44:041
22475993026,3cyclictest13306-21latency_hist21:44:041
22475993025,3cyclictest22473-21cyclictest21:24:041
22475993025,3cyclictest22473-21cyclictest21:24:041
22475993025,3cyclictest13907-21latency_hist20:19:041
22475993025,3cyclictest13907-21latency_hist20:19:041
22475993021,7cyclictest22312-21netstat20:39:221
22475993021,7cyclictest22312-21netstat20:39:221
22475993021,7cyclictest22312-21netstat20:39:221
22474993023,5cyclictest887-21kernelversion21:09:200
22474993023,5cyclictest887-21kernelversion21:09:200
22474993022,6cyclictest10515-21fschecks_count20:09:170
22474993022,6cyclictest10515-21fschecks_count20:09:170
22474993021,7cyclictest6143-21needreboot22:49:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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