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2026-06-26 - 18:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Fri Jun 26, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
443921370,4sleep30-21swapper/312:13:163
443921370,4sleep30-21swapper/312:13:163
1660021290,3sleep30-21swapper/309:53:063
1660021290,3sleep30-21swapper/309:53:063
3039621100,2chrt0-21swapper/210:28:192
3039621100,2chrt0-21swapper/210:28:192
3039621100,2chrt0-21swapper/210:28:192
241582970,3sleep10-21swapper/110:13:101
241582970,3sleep10-21swapper/110:13:101
241582970,3sleep10-21swapper/110:13:101
213112910,9sleep1281ktimers/110:03:251
213112910,9sleep1281ktimers/110:03:251
213112910,9sleep1281ktimers/110:03:251
110752790,2sleep111078-21kernelversion11:03:191
110752790,2sleep111078-21kernelversion11:03:191
144162720,2sleep114417-21cat11:13:161
144162720,2sleep114417-21cat11:13:161
144162720,2sleep114417-21cat11:13:161
26582680,3sleep3431rcuc/307:48:203
26582680,3sleep3431rcuc/307:48:203
26582680,3sleep3431rcuc/307:48:203
11862680,3sleep20-21swapper/210:38:152
11862680,3sleep20-21swapper/210:38:152
120052650,3chrt0-21swapper/309:38:233
120052650,3chrt0-21swapper/309:38:233
155542640,2sleep115689-21fschecks_time08:23:161
155542640,2sleep115689-21fschecks_time08:23:161
252732580,2chrt0-21swapper/108:48:201
252732580,2chrt0-21swapper/108:48:201
272622570,2chrt0-21swapper/308:53:203
272622570,2chrt0-21swapper/308:53:203
123832530,2sleep112384-21/usr/sbin/munin08:13:221
123832530,2sleep112384-21/usr/sbin/munin08:13:221
25522480,3sleep10-21swapper/112:08:151
25522480,3sleep10-21swapper/112:08:151
25522480,3sleep10-21swapper/112:08:151
104432460,3sleep20-21swapper/208:08:212
104432460,3sleep20-21swapper/208:08:212
104432460,3sleep20-21swapper/208:08:212
84552450,1chrt29-21ksoftirqd/110:58:041
84552450,1chrt29-21ksoftirqd/110:58:041
254582450,3sleep30-21swapper/307:23:153
254582450,3sleep30-21swapper/307:23:153
21888994337,4cyclictest22680-21latency_hist08:43:040
15542430,4sleep01557-21unixbench-2d07:43:260
15542430,4sleep01557-21unixbench-2d07:43:260
15542430,4sleep01557-21unixbench-2d07:43:260
50522420,3sleep20-21swapper/209:20:252
50522420,3sleep20-21swapper/209:20:252
50522420,3sleep20-21swapper/209:20:252
224812420,2sleep122485-21gzip11:33:231
224812420,2sleep122485-21gzip11:33:231
224812420,2sleep122485-21gzip11:33:231
91502400,4sleep30-21swapper/309:33:083
91502400,4sleep30-21swapper/309:33:083
70872390,2sleep10-21swapper/112:18:241
70872390,2sleep10-21swapper/112:18:241
70872390,2sleep10-21swapper/112:18:241
21888993930,7cyclictest22525-21netstat11:33:240
21888993930,7cyclictest22525-21netstat11:33:240
21888993930,7cyclictest22525-21netstat11:33:240
311162380,3sleep031119-21cpu11:58:130
311162380,3sleep031119-21cpu11:58:130
311162380,3sleep031119-21cpu11:58:130
231682380,2sleep122921-21/usr/sbin/munin08:43:181
231682380,2sleep122921-21/usr/sbin/munin08:43:181
21889993731,4cyclictest25322-21latency_hist11:43:171
21889993528,5cyclictest30886-21kernelversion09:03:191
21889993528,5cyclictest30886-21kernelversion09:03:191
21889993527,5cyclictest2816-21latency_hist10:43:041
21889993527,5cyclictest2816-21latency_hist10:43:041
21889993527,5cyclictest2816-21latency_hist10:43:041
21888993528,6cyclictest28278-21cron08:58:040
21888993528,6cyclictest28278-21cron08:58:040
21888993528,5cyclictest17846-21latency_hist11:23:040
21888993528,5cyclictest17846-21latency_hist11:23:040
21888993528,5cyclictest17846-21latency_hist11:23:040
21889993425,7cyclictest30578-21netstat10:28:211
21889993425,7cyclictest30578-21netstat10:28:211
21889993425,7cyclictest30578-21netstat10:28:211
10442340,5sleep11045-21unixbench_multi09:08:261
10442340,5sleep11045-21unixbench_multi09:08:261
10442340,5sleep11045-21unixbench_multi09:08:261
21888993325,6cyclictest20252-21gltestperf11:28:170
21888993325,6cyclictest20252-21gltestperf11:28:170
21888993325,6cyclictest20252-21gltestperf11:28:170
190262330,2sleep119028-21sort09:58:191
190262330,2sleep119028-21sort09:58:191
21889993226,4cyclictest20020-21sshd08:33:251
21889993226,4cyclictest20020-21sshd08:33:251
21889993225,5cyclictest31652-21netstat07:38:211
21888993223,7cyclictest550-21cron12:13:170
21888993223,7cyclictest550-21cron12:13:170
21888993223,7cyclictest550-21cron12:13:170
219012310,3sleep30-21swapper/308:38:263
21889993122,7cyclictest30727-21latency_hist07:38:161
21888993124,5cyclictest17083-21latency_hist08:28:040
21888993124,5cyclictest17083-21latency_hist08:28:040
21888993123,6cyclictest20940-21latency_hist08:38:110
21888993123,6cyclictest20940-21latency_hist08:38:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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