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2025-07-16 - 00:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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 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.

Note that this system runs a non-RT kernel.
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 50 highest latencies:
System rackbslot7s.osadl.org (updated Tue Jul 15, 2025 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32341298310,959sleep015709-1kworker/0:2H10:29:060
19923284318,807sleep119953-21/usr/sbin/munin09:49:111
2773627068,648sleep227783-21ntpq10:14:112
28953251519,481sleep129021-21/usr/sbin/munin08:34:181
3272249610,472sleep03308-21ntpq10:39:110
3546248217,449sleep35014-21kworker/u8:310:39:193
317922437401,22sleep331795-21sshd07:03:193
22433233943,281sleep322466-21irqstats08:14:213
112822920,8sleep00-21swapper/007:08:480
1159722607,237sleep211745-21modprobe09:23:482
1159722607,237sleep211745-21modprobe09:23:482
20501225311,225sleep220520-21pluginstate11:34:202
24790223714,207sleep024961-21latency_hist11:48:470
23812222965,23sleep20-21swapper/208:19:042
28980221916,180sleep229042-21fschecks_time10:19:072
6009221413,141sleep26027-21apt-get10:48:582
29188221016,160sleep20-21swapper/206:54:182
27131221028,72sleep20-21swapper/211:54:142
27131221028,72sleep20-21swapper/211:54:142
2915220015,113sleep23064-21unixbench_singl08:54:172
29875219617,161sleep00-21swapper/012:04:010
31865219510,29sleep232000-21latency_hist10:28:482
1361219412,164sleep21464-21timerandwakeup12:14:162
1361219412,164sleep21464-21timerandwakeup12:14:162
8888219210,166sleep28857-21latency_hist10:58:472
18597219026,21sleep20-21swapper/208:03:462
18597219026,21sleep20-21swapper/208:03:462
21947218519,142sleep00-21swapper/009:54:180
21947218519,142sleep00-21swapper/009:54:180
9233217711,151sleep29307-21cat09:14:152
30800217112,72sleep20-21swapper/208:39:192
13933217068,28sleep20-21swapper/209:29:182
666821678,20sleep20-21swapper/207:24:182
30149216528,114sleep030191-21modprobe10:23:450
18463216522,126sleep118469-21/usr/sbin/munin09:44:141
1957321649,139sleep219720-21head08:04:192
1957321649,139sleep219720-21head08:04:192
32039216320,80sleep20-21swapper/212:09:202
32039216320,80sleep20-21swapper/212:09:202
29650215710,87sleep229803-21sort12:03:472
1953215717,27sleep21924-21latency_hist08:53:492
1380721529,64sleep213813-21cpu11:14:012
32224214913,71sleep20-21swapper/210:28:562
31662214918,111sleep031715-21cpuspeed12:09:020
31662214918,111sleep031715-21cpuspeed12:09:020
24242214915,73sleep20-21swapper/210:04:012
14260214749,34sleep20-21swapper/207:49:132
14260214749,34sleep20-21swapper/207:49:132
38821439,82sleep2544-21latency_hist08:48:482
21828214215,68sleep222046-21apt-config08:13:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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