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2025-12-16 - 15:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Tue Dec 16, 2025 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40395729912781,1273cyclictest41261072sleep308:14:563
40395729912580,1255cyclictest873842sleep310:14:563
40395729912150,1211cyclictest40934722sleep307:49:563
40395729911580,1154cyclictest1197442sleep310:39:563
404831422070,1sleep03992896-21kworker/0:1+mm_percpu_wq07:15:070
403957299229,1cyclictest0-21swapper/308:35:113
4039572992212,1cyclictest0-21swapper/308:59:223
4039572992112,1cyclictest0-21swapper/307:53:103
4039572992011,1cyclictest0-21swapper/311:36:143
4039572992011,0cyclictest0-21swapper/311:03:363
4039572991914,3cyclictest0-21swapper/307:15:193
4039572991912,0cyclictest0-21swapper/310:16:173
4039572991911,0cyclictest0-21swapper/311:55:403
4039572991911,0cyclictest0-21swapper/309:43:293
4039572991613,1cyclictest0-21swapper/312:40:003
4039572991613,1cyclictest0-21swapper/308:50:003
403957299161,11cyclictest113067-21turbostat10:35:003
4039572991513,1cyclictest0-21swapper/312:13:323
4039572991513,1cyclictest0-21swapper/311:45:013
4039572991512,1cyclictest0-21swapper/312:17:173
4039572991512,1cyclictest0-21swapper/309:30:163
4039572991512,1cyclictest0-21swapper/309:00:513
4039572991512,1cyclictest0-21swapper/307:25:353
745382141,9sleep074744-21cat10:05:000
403957299144,8cyclictest228918-21taskset12:04:103
403957299141,9cyclictest184277-21taskset11:30:123
4039572991413,0cyclictest0-21swapper/310:05:393
4039572991413,0cyclictest0-21swapper/308:22:053
4039572991412,1cyclictest0-21swapper/311:50:183
4039572991412,1cyclictest0-21swapper/311:28:203
4039572991412,1cyclictest0-21swapper/307:10:313
4039572991412,0cyclictest0-21swapper/308:51:483
4039572991411,1cyclictest0-21swapper/309:36:223
403957299141,10cyclictest4112634-21chrt08:03:063
403957299141,10cyclictest4073766-21turbostat07:35:003
403957299141,10cyclictest208786-21taskset11:45:193
403957299141,10cyclictest164991-21chrt11:15:023
403957299140,11cyclictest3985-21taskset09:10:013
1197482141,9sleep2119757-21sh10:40:002
1066332145,6sleep0106812-21cut10:30:000
424902131,4sleep042523-21apt-get09:40:120
403957299134,7cyclictest267629-21taskset12:32:273
403957299133,7cyclictest4151541-21taskset08:31:113
403957299131,9cyclictest4079825-21taskset07:35:503
403957299131,9cyclictest254072-21chrt12:20:173
4039572991312,0cyclictest0-21swapper/312:27:503
4039572991312,0cyclictest0-21swapper/310:45:303
4039572991312,0cyclictest0-21swapper/310:27:283
4039572991311,1cyclictest0-21swapper/308:15:213
403957299131,10cyclictest68369-21taskset10:00:013
403957299131,10cyclictest61953-21taskset09:55:013
403957299131,10cyclictest4100132-21taskset07:55:013
4039572991311,0cyclictest0-21swapper/309:05:173
4039572991310,1cyclictest0-21swapper/309:20:243
403957299130,10cyclictest4139227-21chrt08:25:023
403957299130,10cyclictest4119206-21chrt08:07:033
403957299130,10cyclictest4086788-21chrt07:41:273
403957299130,10cyclictest29035-21taskset09:25:523
403957299130,10cyclictest234322-21taskset12:05:183
403957299130,10cyclictest158087-21chrt11:06:443
403957299130,10cyclictest144708-21taskset10:55:233
403957299130,10cyclictest132848-21chrt10:50:103
403957299130,10cyclictest125347-21taskset10:40:213
41136052121,8sleep24113763-21/usr/sbin/munin08:05:152
403957299129,1cyclictest0-21swapper/309:15:153
403957299121,9cyclictest61483-21taskset09:52:043
4039572991211,0cyclictest0-21swapper/311:20:173
403957299120,9cyclictest99945-21chrt10:21:293
403957299120,9cyclictest49134-21chrt09:45:073
403957299120,9cyclictest4158530-21taskset08:40:043
403957299120,9cyclictest4060586-21chrt07:20:473
403957299120,9cyclictest164408-21taskset11:10:373
301798120,4rtkit-daemon676-21runrttasks11:03:000
93152111,7sleep09424-21plymouth09:10:240
752642110,8sleep076251-21irqstats10:05:160
40728512111,6sleep24072908-21ntp_states07:30:212
301798110,4rtkit-daemon636-21snmpd12:08:530
301798110,4rtkit-daemon492-21gmain10:38:180
301798110,4rtkit-daemon4046069-21munin-node08:12:181
1912142115,3sleep2192177-21cut11:35:182
426702101,6sleep242698-21cut09:40:142
41080622101,2sleep20-21swapper/208:00:192
40459112101,6sleep04046069-21munin-node07:15:000
40397292101,2sleep20-21swapper/207:10:132
301798100,5rtkit-daemon93090-21python310:15:220
301798100,5rtkit-daemon39583-21cut09:35:170
301798100,5rtkit-daemon242566-21df_inode12:15:140
301798100,3rtkit-daemon636-21snmpd08:48:451
2346072101,6sleep2234732-21python312:05:222
1778262101,5sleep0177859-21apt-get11:25:140
9555291,4sleep29772-21users09:10:252
88013290,6sleep288181-21cut10:15:162
4152285291,6sleep04152403-21gltestperf08:35:130
4086739291,4sleep24086745-21lsb_release07:41:112
4063657291,2sleep00-21swapper/007:25:180
4033318290,5sleep30-21swapper/307:05:103
30179890,6rtkit-daemon492-21gmain09:18:100
30179890,6rtkit-daemon4046069-21munin-node12:33:410
30179890,5rtkit-daemon4112529-21taskset08:01:441
30179890,5rtkit-daemon317-21systemd-udevd11:17:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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