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2026-04-27 - 18:39

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 Apr 27, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318721170,6sleep1281ktimers/111:47:271
318721170,6sleep1281ktimers/111:47:271
318721170,6sleep1281ktimers/111:47:271
3063921000,3sleep130633-21ntp_states10:07:291
3063921000,3sleep130633-21ntp_states10:07:291
44952950,3sleep10-21swapper/107:32:201
44952950,3sleep10-21swapper/107:32:201
185042900,2sleep20-21swapper/208:07:312
51352750,3chrt0-21swapper/110:27:231
51352750,3chrt0-21swapper/110:27:231
99592730,1chrt0-21swapper/109:12:261
99592730,1chrt0-21swapper/109:12:261
15202660,3chrt0-21swapper/110:17:221
15202660,3chrt0-21swapper/110:17:221
231222640,2sleep10-21swapper/108:22:221
231222640,2sleep10-21swapper/108:22:221
241572610,2chrt24158-21wc09:52:181
241572610,2chrt24158-21wc09:52:181
241572610,2chrt24158-21wc09:52:181
241232610,7chrt16-21ksoftirqd/008:22:320
241232610,7chrt16-21ksoftirqd/008:22:320
81972600,1sleep10-21swapper/107:42:211
81972600,1sleep10-21swapper/107:42:211
81972600,1sleep10-21swapper/107:42:211
210342580,3chrt0-21swapper/109:42:251
210342580,3chrt0-21swapper/109:42:251
210342580,3chrt0-21swapper/109:42:251
79682570,4chrt0-21swapper/212:02:112
79682570,4chrt0-21swapper/212:02:112
216742560,3chrt0-21swapper/211:12:142
216742560,3chrt0-21swapper/211:12:142
146112530,7sleep1271rcuc/112:17:301
146112530,7sleep1271rcuc/112:17:301
281522510,3chrt0-21swapper/111:27:291
281522510,3chrt0-21swapper/111:27:291
281522510,3chrt0-21swapper/111:27:291
186692500,4sleep20-21swapper/211:02:262
186692500,4sleep20-21swapper/211:02:262
124182500,3sleep20-21swapper/212:12:242
124182500,3sleep20-21swapper/212:12:242
124182500,3sleep20-21swapper/212:12:242
320582460,3sleep20-21swapper/208:46:142
320582460,3sleep20-21swapper/208:46:142
320582460,3sleep20-21swapper/208:46:142
196752460,2sleep20-21swapper/212:32:222
52432450,3sleep20-21swapper/211:52:302
29336994520,23cyclictest13138-21needreboot10:47:271
29336994520,23cyclictest13138-21needreboot10:47:271
29336994520,23cyclictest13138-21needreboot10:47:271
221572440,3sleep20-21swapper/208:17:322
221572440,3sleep20-21swapper/208:17:322
221572440,3sleep20-21swapper/208:17:322
112672440,5sleep111264-21tail10:42:271
112672440,5sleep111264-21tail10:42:271
39592430,3sleep20-21swapper/208:57:232
39592430,3sleep20-21swapper/208:57:232
29336994216,3cyclictest0-21swapper/108:17:311
29336994216,3cyclictest0-21swapper/108:17:311
29336994216,3cyclictest0-21swapper/108:17:311
227692420,5sleep20-21swapper/211:12:312
227692420,5sleep20-21swapper/211:12:312
211872420,3sleep00-21swapper/012:37:200
211872420,3sleep00-21swapper/012:37:200
29336994114,25cyclictest0-21swapper/112:23:041
29336994114,25cyclictest0-21swapper/112:23:041
29336994114,25cyclictest0-21swapper/112:23:041
29336994010,6cyclictest27130-21seq11:26:321
29336994010,6cyclictest27130-21seq11:26:321
29336994010,6cyclictest27130-21seq11:26:321
215942400,3sleep129326-21cyclictest11:12:091
215942400,3sleep129326-21cyclictest11:12:091
180522390,4sleep20-21swapper/212:27:242
180522390,4sleep20-21swapper/212:27:242
149092390,3sleep20-21swapper/210:52:252
29336993820,16cyclictest0-21swapper/110:12:211
29336993818,18cyclictest0-21swapper/112:07:251
29336993818,18cyclictest0-21swapper/112:07:251
29336993813,3cyclictest0-21swapper/111:02:321
29336993813,3cyclictest0-21swapper/111:02:321
231872380,3sleep20-21swapper/208:22:222
231872380,3sleep20-21swapper/208:22:222
29336993720,15cyclictest0-21swapper/108:47:311
29336993614,3cyclictest0-21swapper/112:02:321
29336993614,3cyclictest0-21swapper/112:02:321
29336993614,3cyclictest0-21swapper/112:02:321
29336993614,3cyclictest0-21swapper/108:07:091
29336993614,3cyclictest0-21swapper/108:07:091
29336993611,4cyclictest0-21swapper/108:32:321
29336993611,4cyclictest0-21swapper/108:32:321
233262360,2sleep1595-21sshd11:15:521
233262360,2sleep1595-21sshd11:15:521
29336993528,5cyclictest28967-21gltestperf08:37:221
29336993528,5cyclictest28967-21gltestperf08:37:221
29336993511,3cyclictest0-21swapper/110:22:241
29336993511,3cyclictest0-21swapper/110:22:241
29328993527,6cyclictest21322-21fschecks_count08:17:220
29328993527,6cyclictest21322-21fschecks_count08:17:220
29328993527,6cyclictest21322-21fschecks_count08:17:220
265382350,3chrt0-21swapper/108:32:101
265382350,3chrt0-21swapper/108:32:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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