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2025-12-23 - 08:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Tue Dec 23, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132372217139,66sleep00-21swapper/019:09:500
131152216165,39sleep20-21swapper/219:08:152
131162202166,24sleep30-21swapper/319:08:173
130562200163,24sleep10-21swapper/119:07:291
1293121760,4sleep21334699cyclictest00:00:192
245472660,4sleep339-21rcuc/319:30:263
255052550,3sleep01333699cyclictest22:00:250
14072520,4sleep19-21rcu_preempt19:55:001
13346995248,3cyclictest0-21swapper/223:13:012
122122460,1sleep081ktimersoftd/022:45:190
1333699382,25cyclictest28797-21kworker/0:323:49:110
255742360,1sleep20-21swapper/223:15:192
1333699342,25cyclictest28643-21kworker/0:122:18:390
1333699333,23cyclictest8559-21kworker/0:121:27:210
1333699332,24cyclictest11355-21kworker/0:122:56:080
1333699331,8cyclictest29800-21kworker/0:221:08:180
1333699331,14cyclictest3529-21kworker/0:020:00:230
1333699324,13cyclictest28433-21munin-run22:10:000
1333699322,24cyclictest2012-21kworker/0:121:15:420
1333699322,24cyclictest2012-21kworker/0:121:15:420
1333699312,24cyclictest18208-21kworker/0:119:44:270
1333699304,13cyclictest4873-21idleruntime-cro22:30:010
1333699301,20cyclictest11764-21kworker/0:200:00:490
1335199291,7cyclictest0-21swapper/321:32:153
1334199293,17cyclictest904-21sssd_nss21:10:201
1334199293,14cyclictest11694-40dnf23:55:341
1333699295,11cyclictest22463-21awk23:10:020
1333699292,25cyclictest25124-21kworker/0:200:36:530
1333699292,10cyclictest14965-21kworker/0:021:57:570
1333699291,23cyclictest29228-21kworker/0:019:50:330
1333699291,10cyclictest2496-21kworker/0:322:40:210
1333699290,18cyclictest28797-21kworker/0:323:23:370
1333699282,10cyclictest5792-21kworker/0:220:07:310
1333699282,10cyclictest5792-21kworker/0:220:07:310
1333699282,10cyclictest11764-21kworker/0:223:58:490
1333699272,10cyclictest28643-21kworker/0:122:13:530
1333699271,24cyclictest16245-21kworker/0:300:13:490
1333699271,10cyclictest9116-21kworker/0:022:38:490
13341992615,3cyclictest3684-21/usr/sbin/munin22:25:191
13341992612,12cyclictest13511-21kworker/u8:122:58:321
1334199261,19cyclictest0-21swapper/100:37:311
1333699262,9cyclictest5792-21kworker/0:220:37:570
1333699262,9cyclictest29228-21kworker/0:019:48:570
1333699262,16cyclictest19934-21kworker/0:223:11:260
1333699262,10cyclictest25124-21kworker/0:200:34:550
1333699262,10cyclictest2012-21kworker/0:121:14:100
1333699261,17cyclictest28797-21kworker/0:323:36:130
1333699261,12cyclictest14617-21munin-run20:25:010
1333699261,10cyclictest17374-21kworker/0:121:46:590
1333699261,10cyclictest15276-21kworker/0:219:13:200
19142250,3sleep339-21rcuc/319:55:163
1334199251,19cyclictest0-21swapper/119:25:241
1334199251,16cyclictest0-21swapper/123:20:221
1334199251,16cyclictest0-21swapper/121:56:571
1333699252,9cyclictest11764-21kworker/0:200:05:350
1333699252,17cyclictest8559-21kworker/0:121:31:370
1333699252,10cyclictest6326-21kworker/0:021:23:490
1333699251,11cyclictest28797-21kworker/0:323:40:390
1333699251,11cyclictest28797-21kworker/0:323:40:390
1333699251,10cyclictest24585-21kworker/0:123:15:060
1333699251,10cyclictest10805-21kworker/0:221:37:270
13336992510,3cyclictest7312-21kworker/0:123:50:170
1335199241,5cyclictest0-21swapper/322:36:213
1335199241,12cyclictest0-21swapper/321:58:013
13341992411,4cyclictest1612-21df23:35:141
1333699248,3cyclictest2496-21kworker/0:322:30:190
1333699248,3cyclictest2496-21kworker/0:322:30:190
1333699242,9cyclictest14965-21kworker/0:021:43:330
1333699242,13cyclictest19934-21kworker/0:223:28:250
1333699241,13cyclictest5792-21kworker/0:220:30:110
1333699241,10cyclictest16548-21kworker/0:020:29:090
1333699241,10cyclictest14965-21kworker/0:021:54:270
260092231,3sleep126167-21df_inode20:50:161
1335199236,7cyclictest0-21swapper/322:42:353
1335199231,17cyclictest0-21swapper/300:34:363
1335199231,11cyclictest801-21snmpd21:25:133
1334199231,3cyclictest14489-21sshd20:23:321
1334199231,16cyclictest0-21swapper/119:19:251
1333699239,2cyclictest16245-21kworker/0:300:19:030
1333699237,3cyclictest32036-21kworker/0:021:03:520
1333699235,2cyclictest3529-21kworker/0:019:59:150
1333699232,9cyclictest11355-21kworker/0:122:51:260
1333699231,12cyclictest25267-21kworker/0:020:49:130
1333699231,10cyclictest28797-21kworker/0:323:30:270
151062220,2sleep230-21rcuc/220:25:112
1335199227,9cyclictest0-21swapper/323:34:273
1335199227,4cyclictest0-21swapper/321:35:023
1335199226,6cyclictest0-21swapper/322:27:523
1335199222,11cyclictest5693-21/usr/sbin/munin23:45:123
1334199222,17cyclictest20600-21munin-run19:25:011
13341992216,3cyclictest24738-21timerwakeupswit00:25:261
13341992214,2cyclictest0-21swapper/123:43:071
13341992214,2cyclictest0-21swapper/123:43:061
1334199221,16cyclictest0-21swapper/122:52:421
1334199221,16cyclictest0-21swapper/121:48:361
1334199221,15cyclictest0-21swapper/121:41:271
1334199221,10cyclictest0-21swapper/122:36:581
1334199221,10cyclictest0-21swapper/100:18:281
1333699222,9cyclictest20562-21kworker/0:000:20:110
1333699222,9cyclictest11355-21kworker/0:123:04:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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