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2026-07-09 - 03:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 376 highest latencies:
System rack9slot4s (updated Thu Jul 09, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285619911171094,20cyclictest0-21swapper/119:26:471
283412658610,32sleep10-21swapper/119:23:161
267902467421,31sleep00-21swapper/019:20:070
1814721120,8sleep12856199cyclictest20:20:151
285599910798,6cyclictest0-21swapper/019:26:470
196182820,4sleep041ktimersoftd/000:40:290
306852580,2sleep030686-21ls22:20:100
35022421,14sleep03584-21grep19:40:260
264942420,2sleep026490-21grep23:35:110
28559994128,9cyclictest5751-21basename22:40:110
2855999397,13cyclictest11565-21gdbus23:12:260
291142381,33sleep129126-21http_loadtime22:15:161
2855999382,15cyclictest0-21swapper/020:58:020
2855999382,15cyclictest0-21swapper/020:13:130
28559993711,7cyclictest16062-21/usr/sbin/munin23:05:260
2856199366,19cyclictest0-21swapper/120:09:121
2856199361,22cyclictest2437-21iostat22:30:201
2855999366,12cyclictest28686-21taskset20:48:430
2855999366,12cyclictest28686-21taskset20:48:430
2855999362,16cyclictest0-21swapper/021:51:260
2855999362,15cyclictest0-21swapper/020:03:440
2855999352,5cyclictest16627-21/usr/sbin/munin20:15:230
2855999351,7cyclictest4468-21/usr/sbin/munin22:35:200
2855999351,5cyclictest457-21/usr/sbin/munin23:50:250
28559993511,6cyclictest25162-21diskstats22:05:140
34642341,5sleep10-21swapper/100:00:091
321012340,7sleep10-21swapper/120:55:281
2855999343,14cyclictest0-21swapper/022:16:420
2855999341,5cyclictest1701-21switchtime19:35:250
2855999341,16cyclictest27580-21ntp_states22:10:260
2855999341,15cyclictest8251-21/usr/sbin/munin21:20:160
2855999341,15cyclictest24534-21wget23:30:110
2855999341,15cyclictest12715-21cron00:25:010
28559993410,5cyclictest31519-21taskset23:46:180
103222346,24sleep110406-21sendmail_mailqu22:50:271
2856199339,5cyclictest3286-21runrttasks21:16:181
2855999338,6cyclictest14986-21cstates00:30:120
2855999338,6cyclictest14986-21cstates00:30:110
2855999337,22cyclictest268912chrt20:44:350
2855999332,14cyclictest19869-21diskstats20:25:150
2855999331,6cyclictest16780-21runrttasks21:40:510
2855999331,5cyclictest2401-21NetworkManager20:30:260
28559993311,6cyclictest22022-21users23:20:300
2855999331,13cyclictest13832-21cat20:10:010
19112330,4sleep1201rcuc/123:55:141
2856199329,8cyclictest11565-21gdbus21:58:161
2856199321,15cyclictest24667-21chrt20:36:101
2856199321,10cyclictest4475-21latency22:35:201
2855999329,5cyclictest9763-21chrt19:57:380
2855999329,5cyclictest10313-21sh21:25:160
2855999328,5cyclictest8900-21taskset22:45:540
2855999323,14cyclictest0-21swapper/021:16:400
2855999323,14cyclictest0-21swapper/000:03:300
2855999322,4cyclictest12945-21aten_r4power_po00:25:110
2855999321,5cyclictest7575-21unixbench_multi19:50:280
2855999321,14cyclictest9160-21cut00:15:090
2855999321,14cyclictest5780-21/usr/sbin/munin19:45:270
2855999321,14cyclictest21311-21proc_pri00:45:270
2855999321,14cyclictest17687-21taskset20:20:020
2855999321,14cyclictest12186-21perl21:30:180
2855999321,13cyclictest23757-21netstat22:00:240
2855999321,13cyclictest12799-21chrt22:57:230
2855999321,12cyclictest23320-21memory23:25:190
2855999321,12cyclictest1958-21taskset23:55:150
28559993210,6cyclictest984-21grep21:00:220
85372311,9sleep00-21swapper/000:10:530
2856199319,4cyclictest40250irq/92-i91500:40:151
2856199317,7cyclictest10481-21seq00:16:351
2856199317,6cyclictest40250irq/92-i91523:05:161
2856199313,14cyclictest19357-21hddtemp_smartct23:15:181
2856199312,8cyclictest25809-21iostat20:40:171
2856199311,18cyclictest0-21swapper/121:31:431
28561993110,7cyclictest28557-21cyclictest19:59:431
2855999319,4cyclictest19878-21python23:15:280
2855999313,16cyclictest0-21swapper/021:55:010
2855999313,14cyclictest0-21swapper/021:37:050
2855999313,14cyclictest0-21swapper/021:14:200
2855999313,10cyclictest0-21swapper/022:25:290
2855999311,14cyclictest22852-21/usr/sbin/munin00:50:170
2855999311,13cyclictest31500-21expr19:30:130
2855999311,12cyclictest3601-21runrttasks21:05:550
24802311,26sleep12487-21df_inode21:05:131
173102311,26sleep117342-21missed_timers00:35:221
2856199308,8cyclictest22-21ksoftirqd/120:26:101
2856199307,8cyclictest22-21ksoftirqd/123:14:351
2856199307,8cyclictest22-21ksoftirqd/100:51:171
2856199306,5cyclictest40250irq/92-i91500:05:281
2856199302,14cyclictest11623-21df22:55:131
2856199301,8cyclictest7824-21iostat_ios00:10:191
28561993014,5cyclictest22-21ksoftirqd/100:26:231
2856199301,12cyclictest0-21swapper/123:50:151
2856199301,11cyclictest18782-21chrt21:47:081
2855999301,15cyclictest0-21swapper/021:48:230
2855999301,12cyclictest6590-21unixbench_singl00:05:280
2855999301,12cyclictest30633-21seq20:54:270
2855999301,10cyclictest0-21swapper/023:40:230
221012301,5sleep10-21swapper/100:49:321
148232301,5sleep10-21swapper/123:03:461
32042291,4sleep13232-21iostat19:40:191
2856199298,5cyclictest40250irq/92-i91500:31:281
2856199298,5cyclictest40250irq/92-i91500:31:281
2856199297,8cyclictest4168-21/usr/sbin/munin21:10:291
2856199297,8cyclictest22-21ksoftirqd/121:50:561
2856199297,8cyclictest22-21ksoftirqd/121:39:271
2856199293,8cyclictest7862-21df22:45:111
2856199291,8cyclictest30991-21ntp_states23:45:241
258302291,5sleep10-21swapper/123:30:581
248282291,5sleep00-21swapper/020:37:530
182382291,5sleep00-21swapper/000:38:570
152052291,5sleep10-21swapper/120:10:311
115312291,5sleep10-21swapper/120:01:201
98982281,5sleep10-21swapper/121:25:111
2856199288,5cyclictest40250irq/92-i91519:30:131
2856199288,4cyclictest40250irq/92-i91521:00:111
2856199288,4cyclictest40250irq/92-i91519:45:261
2856199287,5cyclictest0-21swapper/123:37:031
2856199285,8cyclictest22-21ksoftirqd/120:30:181
2856199282,7cyclictest23172-21cpuspeed_turbos22:00:131
2856199281,9cyclictest7569-21/usr/sbin/munin19:50:281
2856199281,9cyclictest3286-21runrttasks22:09:001
2856199281,8cyclictest94212chrt21:22:351
2856199281,8cyclictest31748-21awk22:20:281
28559992820,5cyclictest13312-21aten_r4power_po23:00:110
2855999281,13cyclictest0-21swapper/022:51:070
283772281,5sleep10-21swapper/120:45:341
283772281,5sleep10-21swapper/120:45:341
221532281,5sleep10-21swapper/123:21:441
70182271,5sleep10-21swapper/122:40:521
304032271,5sleep10-21swapper/120:52:031
2856199277,5cyclictest40250irq/92-i91500:20:211
2856199277,4cyclictest40250irq/92-i91523:29:381
2856199273,18cyclictest32684-21df22:25:121
28561992716,8cyclictest16989-21pidof21:43:001
2856199262,7cyclictest27042-21diskstats22:10:141
28561992615,6cyclictest17008-21sed20:15:291
2856199261,13cyclictest0-21swapper/123:43:151
28561992610,12cyclictest0-21swapper/119:35:161
2855999262,19cyclictest2437-21iostat22:30:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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