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2026-05-27 - 14:29

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 Wed May 27, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19872615716,6129sleep131191-21kworker/1:022:47:571
1065728168,795sleep210714-21unin-run21:33:422
17203274025,662sleep217245-21ntpq23:34:092
17203274025,662sleep217245-21ntpq23:34:092
1464723908,367sleep214737-21grep21:44:002
1464723908,367sleep214737-21grep21:44:002
18811237434,301sleep218882-21switchtime20:14:172
880522938,250sleep28851-21grep23:08:582
25216226217,231sleep125237-21latency_hist22:18:431
568226113,233sleep0598-21awk00:24:050
16441224573,20sleep20-21swapper/220:08:432
16441224573,20sleep20-21swapper/220:08:432
32734222214,190sleep217237-1kworker/2:0H22:40:562
2097222243,125sleep22164-21latency_hist22:48:432
31394221810,144sleep230906-21/usr/sbin/munin20:54:102
31394221810,144sleep230906-21/usr/sbin/munin20:54:102
18115221840,26sleep20-21swapper/221:54:092
18115221840,26sleep20-21swapper/221:54:092
2231221118,41sleep20-21swapper/219:24:232
4017219619,146sleep20-21swapper/200:35:102
4017219619,146sleep20-21swapper/200:35:102
7127218311,135sleep27192-21ls19:39:052
9919218115,28sleep20-21swapper/219:48:412
1923021789,157sleep219271-21grep21:58:572
1923021789,157sleep219271-21grep21:58:572
26318217717,141sleep226336-21kernelversion20:39:162
26318217717,141sleep226336-21kernelversion20:39:162
19029217713,149sleep119054-21awk23:39:211
3220321757,157sleep00-21swapper/000:21:310
20907217316,141sleep321059-21sed23:44:123
262521710,30sleep02631-21unixbench_singl00:29:130
11060217132,15sleep20-21swapper/223:14:152
32509217051,56sleep232577-21sshd20:58:582
4198216921,62sleep20-21swapper/219:29:072
14334216610,134sleep214486-21latency_hist21:43:442
20794216519,89sleep20-21swapper/223:44:112
411421628,139sleep00-21swapper/019:29:050
23964216228,96sleep224102-21grep23:54:122
23964216228,96sleep224102-21grep23:54:122
4518215910,134sleep24674-21latency_hist21:13:442
29047215615,18sleep20-21swapper/222:29:092
23640215415,101sleep20-21swapper/222:13:432
32051215310,86sleep20-21swapper/219:14:142
1452821535,12sleep20-21swapper/220:02:462
567215243,37sleep2626-21idleruntime19:19:022
3069921528,54sleep20-21swapper/220:53:452
3069921528,54sleep20-21swapper/220:53:452
2435721528,135sleep3194-21jbd2/mmcblk2p2-23:56:193
2435721528,135sleep3194-21jbd2/mmcblk2p2-23:56:193
6303215119,90sleep20-21swapper/221:18:572
27984214816,116sleep328016-21tune2fs20:44:583
12268214827,101sleep312364-21fschecks_time23:19:003
36432147102,23sleep20-21swapper/222:53:442
30002214197,23sleep20-21swapper/200:14:102
30002214197,23sleep20-21swapper/200:14:102
1725921417,95sleep20-21swapper/220:09:162
1725921417,95sleep20-21swapper/220:09:162
6752213898,23sleep26857-21apt-config19:38:442
2799921385,11sleep20-21swapper/222:25:142
29428213794,25sleep229466-21fschecks_count19:09:012
1289621355,18sleep20-21swapper/219:57:092
8525213413,75sleep20-21swapper/221:24:132
8346213413,95sleep00-21swapper/021:24:110
3258213413,22sleep10-21swapper/121:09:021
6991213124,87sleep37140-21tail21:19:183
2773621310,7sleep30-21swapper/322:24:133
20404213118,96sleep320483-21sort20:19:223
20404213118,96sleep320483-21sort20:19:223
216621309,101sleep011-21ksoftirqd/019:23:520
18605212914,100sleep318099-21apt-get23:38:513
5543212816,96sleep15547-21diskstats22:59:001
1440521289,84sleep214545-21tail23:24:122
12610212822,87sleep312806-21cat21:38:443
2763121245,109sleep20-21swapper/200:08:012
2510321226,81sleep20-21swapper/222:18:072
2655021205,81sleep20-21swapper/222:21:262
12998211712,90sleep012466-21apt-get21:38:530
583621135,12sleep20-21swapper/221:16:472
5224211322,73sleep15313-21ls22:58:431
1750211326,35sleep20-21swapper/200:28:562
5548211112,81sleep25637-21fschecks_time22:59:012
4150210911,64sleep24198-21latency22:54:042
24670210910,15sleep30-21swapper/322:14:123
19650210911,84sleep0363-21snmpd23:40:290
11252210917,74sleep111378-21sort23:14:181
1709821088,55sleep00-21swapper/023:34:070
1709821088,55sleep00-21swapper/023:34:070
9611210710,14sleep00-21swapper/021:29:040
27963210715,76sleep228035-21cat19:04:462
1664421077,16sleep20-21swapper/221:49:132
1089321068,59sleep211046-21awk19:49:142
8853210511,81sleep38878-21df23:08:593
3011121057,15sleep20-21swapper/222:33:532
2318821050,6sleep30-21swapper/320:29:063
9239210411,20sleep09275-21ntp_states23:09:200
2363221049,52sleep20-21swapper/220:29:192
5803210312,70sleep15873-21/usr/sbin/munin19:34:111
22996210216,66sleep00-21swapper/020:29:000
10679210216,73sleep310723-21processes19:49:113
1252721018,60sleep212609-21gpgv21:38:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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