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2026-05-14 - 21:32

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot7s.osadl.org (updated Thu May 14, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1235521240,0sleep10-21swapper/110:09:581
1662929582,8sleep00-21swapper/007:09:460
1659429279,9sleep20-21swapper/207:09:212
1635829265,9sleep30-21swapper/307:06:173
1662328764,12sleep10-21swapper/107:09:441
76742440,0sleep30-21swapper/309:27:493
307092260,1sleep0141rcu_preempt10:40:110
1673699260,25cyclictest0-21swapper/212:02:372
1673299261,2cyclictest0-21swapper/109:25:181
1673299260,23cyclictest0-21swapper/110:35:331
1673699250,3cyclictest0-21swapper/211:20:152
1673699250,22cyclictest0-21swapper/210:55:102
1673999235,16cyclictest18382-21awk12:10:003
293822220,2sleep229378-21ssh09:40:262
1673999220,21cyclictest7115-21kworker/3:011:31:043
16736992221,1cyclictest0-21swapper/211:03:292
1673699220,1cyclictest0-21swapper/211:12:172
1673699220,1cyclictest0-21swapper/211:12:162
1673999210,19cyclictest7115-21kworker/3:011:27:173
1673699210,20cyclictest0-21swapper/210:42:142
1673299212,19cyclictest23954-21kworker/1:112:01:121
1673299212,18cyclictest12578-21kworker/1:110:10:551
16730992121,0cyclictest0-21swapper/010:02:000
16739992018,2cyclictest0-21swapper/311:36:193
1673699200,20cyclictest0-21swapper/210:32:492
1673699200,19cyclictest0-21swapper/209:51:482
1673299201,19cyclictest20956-21kworker/1:011:34:031
1673299201,17cyclictest0-21swapper/111:20:111
16739991916,1cyclictest0-21swapper/312:23:283
1673699190,2cyclictest0-21swapper/210:06:052
1673699190,1cyclictest0-21swapper/212:15:292
16732991917,1cyclictest15389-21kworker/1:111:17:031
16732991916,2cyclictest25-21ksoftirqd/110:25:001
16732991913,6cyclictest0-21swapper/109:58:391
1673099190,18cyclictest0-21swapper/011:37:350
16732991817,1cyclictest0-21swapper/111:46:121
1673299180,1cyclictest0-21swapper/107:15:121
1673999172,9cyclictest26228-21cron07:30:003
1673699170,17cyclictest0-21swapper/210:16:502
1673299172,1cyclictest9536-21diskmemload10:57:221
1673299170,2cyclictest0-21swapper/112:25:241
1673099173,10cyclictest16939-21apache_processe11:30:110
16730991717,0cyclictest0-21swapper/012:24:400
16730991716,1cyclictest0-21swapper/012:16:400
16730991713,3cyclictest21265-21sh10:34:310
202742160,1chrt0-21swapper/209:15:262
1673999160,1cyclictest0-21swapper/309:52:113
1673999160,16cyclictest0-21swapper/310:43:533
16736991613,2cyclictest32-21ksoftirqd/212:06:172
16736991610,4cyclictest11116-21ssh12:25:012
1673699160,16cyclictest0-21swapper/211:37:532
1673299161,1cyclictest141rcu_preempt10:00:071
1673299161,14cyclictest4822-21latency_hist08:59:591
1673099161,10cyclictest0-21swapper/008:05:130
1673099160,1cyclictest0-21swapper/009:47:240
16739991514,1cyclictest39-21ksoftirqd/312:31:473
16739991511,2cyclictest23185-21sed10:15:253
1673999151,12cyclictest0-21swapper/312:18:453
1673999150,1cyclictest0-21swapper/311:22:213
1673699152,13cyclictest9536-21diskmemload12:14:262
1673699150,4cyclictest0-21swapper/210:46:222
1673699150,15cyclictest0-21swapper/212:32:492
1673699150,15cyclictest0-21swapper/209:31:372
16732991512,2cyclictest0-21swapper/111:12:041
16732991512,2cyclictest0-21swapper/111:12:031
1673299150,1cyclictest0-21swapper/109:34:201
16730991510,3cyclictest20478-21munin-plugin-st08:25:000
1673099150,2cyclictest0-21swapper/011:04:040
1673099150,14cyclictest0-21swapper/011:50:060
1673099150,0cyclictest0-21swapper/009:36:380
1673999149,3cyclictest14913-21sh11:09:333
1673999142,6cyclictest0-21swapper/309:35:233
16739991413,1cyclictest12920-21ssh10:10:133
16739991413,1cyclictest0-21swapper/310:33:523
16739991410,3cyclictest9919-21tr11:45:143
16739991410,2cyclictest4231-21ssh09:45:173
1673699148,5cyclictest25799-21sed11:55:002
1673699144,4cyclictest8127-21cron08:00:012
16736991410,2cyclictest31394-21grep07:40:142
1673699140,12cyclictest0-21swapper/211:07:212
16732991410,3cyclictest18210-21cat08:20:001
16732991410,3cyclictest11547-21head08:05:171
16732991410,2cyclictest19071-21idleruntime-cro07:15:001
1673099149,3cyclictest9399-21head11:25:150
1673099149,3cyclictest18769-21sleep09:35:010
16730991410,3cyclictest25742-21wc11:15:210
1673099140,14cyclictest0-21swapper/012:04:080
1673999139,3cyclictest28775-21ls09:40:193
1673999139,2cyclictest21985-21grep07:20:143
1673999135,3cyclictest7179-21munin-run11:05:013
16739991310,2cyclictest29984-21ls10:00:213
16739991310,2cyclictest24040-21rm11:15:003
16739991310,2cyclictest13641-21wc10:29:593
16739991310,2cyclictest11546-21tail08:05:173
1673999130,2cyclictest0-21swapper/309:56:313
1673999130,2cyclictest0-21swapper/309:32:133
1673999130,12cyclictest0-21swapper/308:20:123
1673999130,11cyclictest23466-21tr10:55:153
1673699139,3cyclictest9252-21wc11:45:012
1673699139,3cyclictest26759-21cut09:20:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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