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2024-07-27 - 04:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 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 rackcslot7s.osadl.org (updated Fri Jul 26, 2024 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260941199507500,4cyclictest2667309-21turbostat09:50:003
260941199507497,7cyclictest2654677-21turbostat09:15:003
260940799507498,6cyclictest2700029-21turbostat11:24:552
260940799483456,24cyclictest2642088-21turbostat08:44:552
260940799475448,24cyclictest2685386-21turbostat10:44:562
260940799475448,24cyclictest2685386-21turbostat10:44:552
260941199474453,17cyclictest2642088-21turbostat08:40:003
260941199474449,22cyclictest2633185-21turbostat08:19:553
260941199470431,20cyclictest2625942-21turbostat07:59:553
260941199466457,5cyclictest2724421-21turbostat12:34:563
260941199464457,4cyclictest2624123-21turbostat07:54:553
260941199464455,6cyclictest2681694-21turbostat10:30:003
260941199463456,4cyclictest2688944-21turbostat10:54:553
260941199460453,4cyclictest2720952-21turbostat12:24:553
260941199460451,6cyclictest2618726-21turbostat07:39:553
260941199460451,6cyclictest2618726-21turbostat07:39:553
260941199460436,21cyclictest2620562-21turbostat07:44:553
260941199459452,4cyclictest2706992-21turbostat11:44:543
260941199459452,4cyclictest2705254-21turbostat11:39:563
260941199459452,4cyclictest2705254-21turbostat11:39:553
260941199458451,4cyclictest2690741-21turbostat10:59:553
260941199455448,4cyclictest2703534-21turbostat11:30:003
260941199454447,4cyclictest2663752-21turbostat09:40:013
260941199452444,5cyclictest2622339-21turbostat07:49:553
260941199449441,5cyclictest2629638-21turbostat08:05:003
260941199445436,6cyclictest2631418-21turbostat08:14:553
260941199442434,5cyclictest2719225-21turbostat12:19:553
260941199439431,5cyclictest2652899-21turbostat09:10:013
260941199439415,20cyclictest2656452-21turbostat09:20:003
260941199437429,5cyclictest2613376-21turbostat07:20:003
260941199435428,4cyclictest2679909-21turbostat10:24:593
260940799435428,4cyclictest2694293-21turbostat11:09:552
260941199434423,8cyclictest2636748-21turbostat08:29:553
260941199433426,4cyclictest2674577-21turbostat10:10:013
260941199430423,4cyclictest2715636-21turbostat12:05:013
260941199430423,4cyclictest2715636-21turbostat12:05:003
260941199430421,6cyclictest2683605-21turbostat10:35:003
260941199429422,4cyclictest2667309-21turbostat09:54:553
260941199429422,4cyclictest2667309-21turbostat09:54:553
260941199426419,4cyclictest2687177-21turbostat10:49:553
260941199426401,22cyclictest2724421-21turbostat12:30:003
260941199425417,5cyclictest2651116-21turbostat09:05:003
260941199424416,5cyclictest2678127-21turbostat10:20:003
260941199423403,17cyclictest2672791-21turbostat10:05:013
260939799423416,4cyclictest2713894-21turbostat12:04:560
260939799423416,4cyclictest2713894-21turbostat12:04:550
260941199422415,4cyclictest2717491-21turbostat12:14:553
260941199420413,4cyclictest2658236-21turbostat09:29:553
260941199420412,5cyclictest2645790-21turbostat08:54:553
260941199419397,19cyclictest2698292-21turbostat11:14:593
260941199418411,4cyclictest2713894-21turbostat12:00:003
260941199414407,4cyclictest2710442-21turbostat11:54:553
260941199414406,5cyclictest2616942-21turbostat07:30:003
260940199414405,6cyclictest2701794-21turbostat11:29:561
260941199412405,4cyclictest2700029-21turbostat11:20:003
260941199412394,15cyclictest2644003-21turbostat08:49:553
260941199406383,20cyclictest2694293-21turbostat11:05:003
260941199404397,4cyclictest2701794-21turbostat11:25:003
260941199403396,4cyclictest2613376-21turbostat07:24:553
260941199397388,6cyclictest2703534-21turbostat11:34:553
260939799396389,4cyclictest2669098-21turbostat09:59:550
260941199395388,4cyclictest2710442-21turbostat11:50:003
260941199394386,5cyclictest2644003-21turbostat08:45:013
260941199392385,4cyclictest2658236-21turbostat09:25:003
260940799390383,4cyclictest2611105-21turbostat07:19:552
260941199389382,4cyclictest2649340-21turbostat09:00:003
260941199389382,4cyclictest2649340-21turbostat09:00:003
260941199383373,7cyclictest2674577-21turbostat10:14:553
260941199382375,4cyclictest2665532-21turbostat09:45:013
260940799381373,5cyclictest2634964-21turbostat08:24:562
260941199379372,4cyclictest2717491-21turbostat12:10:003
260941199378370,5cyclictest2687177-21turbostat10:45:013
260941199378370,5cyclictest2687177-21turbostat10:45:003
260941199377368,6cyclictest2726141-21turbostat12:39:553
260941199374354,17cyclictest2636748-21turbostat08:25:003
260939799358311,29cyclictest2665532-21turbostat09:49:550
260940799357348,6cyclictest2638536-21turbostat08:34:552
260940799351343,5cyclictest2698292-21turbostat11:19:562
260941199346340,3cyclictest2618726-21turbostat07:35:003
260941199345338,4cyclictest2629638-21turbostat08:09:553
260941199343336,4cyclictest2696094-21turbostat11:10:013
260940799341335,3cyclictest2681694-21turbostat10:34:552
260941199336325,8cyclictest2640303-21turbostat08:34:593
260940799333326,4cyclictest2652899-21turbostat09:14:562
260940799333326,4cyclictest2609290-21turbostat07:14:552
260940799333326,4cyclictest2609290-21turbostat07:14:552
260941199326319,4cyclictest2683605-21turbostat10:39:563
260940799325318,4cyclictest2649340-21turbostat09:04:552
260941199320313,4cyclictest2611105-21turbostat07:15:013
260941199320313,4cyclictest2611105-21turbostat07:15:003
260941199261241,17cyclictest2670868-21turbostat09:59:593
260941199198191,4cyclictest2661934-21turbostat09:35:003
1623991250,9rtkit-daemon1622-21rtkit-daemon08:10:012
1623991000,88rtkit-daemon0-21swapper/307:06:083
2609407999891,4cyclictest2660153-21turbostat09:34:542
27080112930,6sleep013-21ksoftirqd/011:40:270
260906229167,17sleep00-21swapper/007:07:470
260817028958,24sleep20-21swapper/207:05:202
260773628947,32sleep10-21swapper/107:05:121
27227072770,6sleep22701627-21kworker/u8:212:25:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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