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2026-06-02 - 14:45

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 Jun 02, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32221236926,321sleep032258-21fschecks_count23:58:380
21020234617,312sleep121051-21/usr/sbin/munin21:38:421
13178229814,268sleep113181-21ntpq21:13:511
31757228611,263sleep331882-21cat20:28:523
21248228630,191sleep321270-21apt-get19:58:203
251722282102,98sleep30-21swapper/320:08:413
954722596,218sleep3363-21snmpd22:45:103
954722596,218sleep3363-21snmpd22:45:103
10985225227,214sleep310998-21awk22:48:533
9807223315,19sleep30-21swapper/319:18:513
6837222955,108sleep3194-21jbd2/mmcblk2p2-20:53:473
1321222212,194sleep31332-21fschecks_count00:03:383
4118221810,190sleep34195-21latency22:28:433
212192212100,68sleep321257-21processes21:38:483
5496220416,101sleep35546-21fschecks_count22:33:393
16491219721,82sleep30-21swapper/321:23:463
8615219417,151sleep30-21swapper/320:58:513
8615219417,151sleep30-21swapper/320:58:513
2305421837,164sleep323100-21sed23:28:423
2305421837,164sleep323100-21sed23:28:423
16353218280,26sleep30-21swapper/323:08:233
16042218222,133sleep116196-21sed19:38:521
2871621788,150sleep30-21swapper/323:48:203
9028217420,136sleep19022-21apt-get00:28:341
8905217252,104sleep39048-21latency_hist19:18:233
19957217270,82sleep30-21swapper/323:18:413
26373216610,94sleep326414-21grep23:38:473
22300216513,90sleep30-21swapper/321:43:373
22300216513,90sleep30-21swapper/321:43:373
1414021629,139sleep314178-21ntpq19:33:453
13485215452,86sleep313531-21unin-run19:33:213
8888215311,118sleep28903-21latency_hist19:18:222
1139721420,30sleep211401-21unixbench_multi00:33:512
30272214150,56sleep330311-21unin-run23:53:203
25589214011,112sleep325603-21modprobe23:38:193
6024213927,94sleep30-21swapper/300:18:393
6024213927,94sleep30-21swapper/300:18:393
2466521398,94sleep324683-21grep20:08:213
13126213628,85sleep313127-21munin-run22:58:223
5330213437,75sleep35356-21latency_hist19:08:213
10334213433,89sleep310421-21wc00:33:213
28311213332,85sleep328333-21kernelversion20:18:423
13219213132,85sleep313294-21mailstats21:13:533
8780213050,20sleep30-21swapper/300:28:203
21732213016,97sleep00-21swapper/023:23:500
19775213022,84sleep00-21swapper/023:18:370
6739212938,70sleep30-21swapper/319:11:453
1574921289,106sleep315796-21ntp_offset19:38:463
20962212515,16sleep00-21swapper/021:38:410
4042212416,86sleep34187-21unixbench_multi20:43:533
4408212311,95sleep24409-21sshd20:45:382
21397212329,80sleep321457-21idleruntime23:23:413
5591212233,74sleep35719-21cat20:48:503
12890212124,76sleep012902-21modprobe22:58:190
31955212014,89sleep032085-21latency_hist23:58:220
5724211914,80sleep30-21swapper/300:18:233
5724211914,80sleep30-21swapper/300:18:233
2183211915,84sleep00-21swapper/020:38:460
3189421188,70sleep331953-21date23:58:213
25863211829,23sleep30-21swapper/321:53:503
117221179,16sleep00-21swapper/022:18:460
5364211515,21sleep00-21swapper/019:08:220
24430211535,39sleep30-21swapper/321:48:503
23154211414,81sleep122762-21/usr/sbin/munin23:28:441
23154211414,81sleep122762-21/usr/sbin/munin23:28:441
2156821140,6sleep20-21swapper/223:23:432
2269321139,91sleep321776-21/usr/sbin/munin19:59:253
31885211117,76sleep032028-21head20:28:530
19285211125,15sleep30-21swapper/321:33:393
1157021108,20sleep311585-21awk19:23:523
310721087,43sleep30-21swapper/320:43:213
26436210827,55sleep126455-21apt-get20:13:321
19778210811,79sleep219923-21latency_hist19:53:222
18380210717,40sleep018474-21memory23:13:450
19018210626,15sleep30-21swapper/319:48:513
15845210528,15sleep30-21swapper/321:23:223
10003210512,29sleep310045-21ntp_kernel_pll_21:03:483
501210336,24sleep30-21swapper/322:18:213
2889521039,67sleep30-21swapper/322:03:433
2889521039,67sleep30-21swapper/322:03:433
22495210223,62sleep1225-21systemd-journal23:28:191
13418210211,77sleep313436-21apt-get22:58:303
11809210116,22sleep30-21swapper/300:38:013
820821005,11sleep30-21swapper/322:42:473
820821005,11sleep30-21swapper/322:42:473
26971210019,64sleep30-21swapper/321:58:353
26971210019,64sleep30-21swapper/321:58:353
69329925,59sleep30-21swapper/320:33:483
3050429819,16sleep30-21swapper/322:08:443
238929820,60sleep22481-21tune2fs22:23:412
708529618,65sleep27203-21cat20:53:542
32182948,35sleep30-21swapper/300:08:463
276032945,36sleep30-21swapper/320:16:453
254729417,58sleep22614-21latency_hist00:08:212
1008629418,37sleep10-21swapper/122:48:351
560929323,40sleep00-21swapper/019:08:390
1850129316,63sleep218540-21sed23:13:472
16272927,65sleep11210-21/usr/sbin/munin00:03:441
186792918,65sleep30-21swapper/323:13:523
1664229110,62sleep30-21swapper/323:08:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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