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2026-07-21 - 04:32

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 100 highest latencies:
System rackbslot7s.osadl.org (updated Tue Jul 21, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62662337411,3350sleep31318-21kworker/3:022:37:343
17143260212,523sleep017182-21fschecks_count21:28:400
54125848,563sleep0577-21ntpq22:18:460
18368251736,464sleep018474-21ls23:13:520
2438224196,400sleep024426-21ntpq23:33:460
26077239515,366sleep226154-21unin-run21:58:212
8157237917,348sleep28168-21ntpq20:58:472
2500234217,308sleep22546-21unin-run20:43:212
2500234217,308sleep22546-21unin-run20:43:212
339232373,194sleep0506-21unixbench_multi20:33:540
339232373,194sleep0506-21unixbench_multi20:33:540
4092231650,252sleep00-21swapper/022:29:150
20774230411,278sleep020859-21latency_hist19:58:220
23750226922,41sleep00-21swapper/021:48:500
2195224949,123sleep00-21swapper/000:08:210
217642242177,46sleep021824-21mailstats19:58:540
217642242177,46sleep021824-21mailstats19:58:540
15509222717,191sleep115501-21apt-get21:23:361
15509222717,191sleep115501-21apt-get21:23:361
2015322199,199sleep020164-21sort21:38:330
1983221513,185sleep02129-21unixbench_singl20:38:550
1983221513,185sleep02129-21unixbench_singl20:38:550
16762221513,152sleep016765-21cron21:28:200
16762221513,152sleep016765-21cron21:28:200
28451221020,173sleep128530-21awk22:03:491
28390220210,59sleep027451-21/usr/sbin/munin20:18:570
28390220210,59sleep027451-21/usr/sbin/munin20:18:570
2374222019,154sleep023798-21sed23:33:210
11291220185,56sleep00-21swapper/022:53:370
19949219414,129sleep020060-21sort23:18:520
8676219390,55sleep00-21swapper/000:28:360
2500721926,174sleep025059-21cat21:53:430
2873218550,57sleep00-21swapper/020:43:390
2873218550,57sleep00-21swapper/020:43:390
37121786,11sleep00-21swapper/000:00:340
9742217223,129sleep39743-21cpu22:48:363
28097217228,61sleep00-21swapper/022:03:400
6802216720,81sleep00-21swapper/019:13:290
5333216442,108sleep05349-21uname22:33:430
22127216412,75sleep022172-21ntpq21:43:460
22127216412,75sleep022172-21ntpq21:43:460
12867216332,84sleep00-21swapper/022:58:380
27333216056,47sleep00-21swapper/023:43:430
9635215947,50sleep00-21swapper/021:03:460
9635215947,50sleep00-21swapper/021:03:460
24428215810,135sleep024453-21fschecks_count20:08:390
3743215743,73sleep03840-21latency_hist00:13:220
4100215616,14sleep20-21swapper/200:13:402
29259215514,125sleep229229-21latency_hist22:08:222
19512215325,104sleep219543-21fschecks_count19:53:402
8380215137,51sleep08383-21cron00:28:200
6917215148,47sleep00-21swapper/022:38:440
4563215110,116sleep00-21swapper/000:13:510
2597021507,95sleep00-21swapper/020:13:400
2597021507,95sleep00-21swapper/020:13:400
10309214347,52sleep00-21swapper/000:33:410
31457214212,80sleep031460-21cron23:58:200
26808214122,75sleep00-21swapper/021:58:470
14867213929,72sleep00-21swapper/019:38:400
30329213720,103sleep130412-21wc20:28:221
17464213712,71sleep017474-21modprobe23:13:190
17464213712,71sleep017474-21modprobe23:13:190
18497213615,17sleep00-21swapper/019:48:530
18497213615,17sleep00-21swapper/019:48:530
31597213513,107sleep331719-21latency_hist23:58:233
10153213227,44sleep00-21swapper/019:23:420
347121319,17sleep00-21swapper/022:28:390
347121319,17sleep00-21swapper/022:28:390
3160921278,71sleep0364-21snmpd20:30:350
2686621259,62sleep026996-21cat23:43:230
1433221205,102sleep00-21swapper/021:18:470
29391211710,51sleep00-21swapper/020:23:450
21539211720,71sleep10-21swapper/121:43:221
21539211720,71sleep10-21swapper/121:43:221
2896211444,49sleep32918-21/usr/sbin/munin00:08:493
11882211340,18sleep00-21swapper/021:10:440
13395211029,67sleep013400-21cron21:15:200
8197210952,40sleep00-21swapper/022:43:360
23955210718,74sleep324091-21awk21:48:543
17453210544,48sleep0225-21systemd-journal19:46:350
17453210544,48sleep0225-21systemd-journal19:46:350
1086321055,17sleep00-21swapper/022:51:360
8369210414,75sleep18414-21idleruntime22:43:411
18362210416,72sleep218429-21cat21:33:222
1721210414,74sleep21895-21cat22:23:242
1721210414,74sleep21895-21cat22:23:242
7206210314,15sleep00-21swapper/020:55:580
7206210314,15sleep00-21swapper/020:55:580
12460210224,52sleep112498-21grep21:13:391
4343210143,45sleep04330-21apt-get20:48:400
31136210127,42sleep331208-21fschecks_time22:13:403
1572210017,65sleep11455-21latency_hist22:23:231
590429918,70sleep00-21swapper/019:09:130
1442329815,69sleep314477-21sort23:03:373
2209529710,11sleep30-21swapper/321:43:453
2209529710,11sleep30-21swapper/321:43:453
3102829621,20sleep10-21swapper/120:28:471
366829418,62sleep23747-21cut22:29:052
897529328,48sleep39002-21grep21:03:203
1367129325,46sleep313713-21wc19:33:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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