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2026-01-01 - 03:30

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 Thu Jan 01, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4656293411,908sleep324090-21kworker/u8:321:59:133
26307286811,840sleep326336-21/usr/sbin/munin21:24:173
21871265819,623sleep121822-21/usr/sbin/munin00:38:561
23505256412,532sleep023646-21unixbench_multi21:14:280
12141251521,441sleep012291-21cut22:23:570
15985247627,431sleep116053-21/usr/sbin/munin22:34:231
20641245127,404sleep320709-21/usr/sbin/munin22:49:243
18464240268,202sleep018477-21cron00:28:530
17099238623,348sleep317160-21/usr/sbin/munin22:39:143
916723769,41sleep00-21swapper/020:29:190
28989237640,324sleep029033-21ntpq19:49:180
32759233469,107sleep00-21swapper/023:29:140
21035229215,221sleep021081-21latency_hist21:08:550
21035229215,221sleep021081-21latency_hist21:08:550
20760227516,184sleep00-21swapper/000:34:510
214922716,11sleep00-21swapper/020:06:580
4874226322,218sleep25023-21unixbench_singl20:14:272
30981223917,205sleep231049-21/usr/sbin/munin19:55:092
6803223512,206sleep26827-21df_inode23:49:142
17728223356,69sleep017874-21unixbench_singl22:39:270
4049222714,196sleep11-21systemd21:58:541
18208222018,188sleep018236-21fschecks_count20:59:140
18208222018,188sleep018236-21fschecks_count20:59:140
28576221934,169sleep028712-21grep23:14:280
20007221229,136sleep020055-21systemd-run00:33:540
20007221229,136sleep020055-21systemd-run00:33:540
4002221138,59sleep00-21swapper/023:40:160
4002221138,59sleep00-21swapper/023:40:160
4002221138,59sleep00-21swapper/023:40:160
2675221147,105sleep00-21swapper/020:09:160
2675221147,105sleep00-21swapper/020:09:160
7052220752,135sleep0369-21snmpd20:23:580
30330220526,143sleep029857-21apt-get19:53:580
18094220569,124sleep018108-21needreboot19:14:290
14351220212,175sleep014437-21cut00:14:240
14351220212,175sleep014437-21cut00:14:240
21507219758,119sleep00-21swapper/019:24:270
7772219610,124sleep07865-21fschecks_time22:09:150
14508219654,125sleep014639-21timerwakeupswit22:29:260
4030218818,115sleep04043-21modprobe21:58:530
8653218658,71sleep00-21swapper/023:54:170
24510217458,51sleep00-21swapper/019:34:280
13531217410,41sleep00-21swapper/020:44:130
31070217040,114sleep031108-21processes21:39:230
2485221615,132sleep00-21swapper/023:04:180
1552216027,115sleep31571-21basename23:33:533
11671215918,10sleep00-21swapper/000:07:420
16917215813,118sleep017110-21sed19:13:570
29398215621,75sleep00-21swapper/021:34:190
22582215636,70sleep022681-21latency_hist21:13:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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