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2026-04-08 - 01:37

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 Apr 07, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220712471156,181sleep10-21swapper/110:26:481
292352442107,316sleep129286-21sort12:32:001
28895234048,188sleep128985-21latency_hist07:21:491
28895234048,188sleep128985-21latency_hist07:21:491
6356227815,249sleep06367-21ntpq11:17:100
13353226811,243sleep313397-21ntpq09:57:263
30111224244,87sleep130260-21unixbench_singl09:07:171
28065222113,194sleep228079-21irqstats09:02:052
27452221935,139sleep127591-21latency_hist12:26:471
1905022179,110sleep10-21swapper/108:32:161
27940221424,171sleep128074-21unixbench_singl10:42:191
27940221424,171sleep128074-21unixbench_singl10:42:191
2904221134,95sleep11-21systemd09:26:471
17921221114,179sleep1367-21sshd11:55:261
31051220871,27sleep10-21swapper/107:27:101
2711422049,176sleep127240-21latency_hist07:16:481
31974219938,108sleep10-21swapper/110:57:041
5995219869,81sleep16028-21fschecks_count11:17:031
17500219613,18sleep10-21swapper/108:27:151
17500219613,18sleep10-21swapper/108:27:151
2820321857,104sleep10-21swapper/109:02:081
14519218318,149sleep014513-21apt-get10:01:590
14519218318,149sleep014513-21apt-get10:01:590
17983218195,21sleep10-21swapper/110:12:101
15777217917,100sleep10-21swapper/110:06:451
15777217917,100sleep10-21swapper/110:06:451
13891217758,98sleep10-21swapper/108:17:051
21919217642,22sleep121982-21processes12:07:131
25251217412,140sleep125323-21switchtime08:52:141
16470217214,101sleep10-21swapper/111:51:391
1835217140,116sleep11899-21mailstats07:37:151
10460216448,16sleep10-21swapper/108:06:471
10460216448,16sleep10-21swapper/108:06:471
9090216256,93sleep19107-21fschecks_count11:27:041
8518216149,96sleep18583-21awk09:42:141
28370215219,24sleep10-21swapper/112:27:161
23941215256,44sleep10-21swapper/110:32:051
4046214913,18sleep10-21swapper/107:45:231
12983214010,17sleep10-21swapper/109:57:161
32590213925,90sleep00-21swapper/009:17:050
26670213833,89sleep00-21swapper/010:38:260
1222221377,80sleep10-21swapper/111:37:051
11296213614,24sleep10-21swapper/108:07:161
25325213226,86sleep225455-21timerwakeupswit08:52:152
3374213023,87sleep32873-21apt-get09:26:573
1600821299,46sleep30-21swapper/311:47:173
16571212665,17sleep10-21swapper/110:07:131
18426212527,85sleep118446-21grep11:57:041
20385212325,23sleep10-21swapper/108:37:081
12587212111,30sleep112733-21gpgv09:56:471
4036212013,18sleep00-21swapper/011:11:450
24808212010,40sleep024809-21sshd07:08:230
9684211713,86sleep39711-21fschecks_count09:47:043
9684211713,86sleep39711-21fschecks_count09:47:043
16091211718,78sleep016235-21unixbench_singl08:22:170
1359211623,71sleep31427-21latency_hist09:21:483
9402211519,82sleep39445-21/usr/sbin/munin11:27:103
1686221130,7sleep00-21swapper/008:26:480
1686221130,7sleep00-21swapper/008:26:480
11133211310,86sleep211155-21/usr/sbin/munin08:07:132
376721096,27sleep10-21swapper/111:08:191
18971210917,65sleep00-21swapper/008:32:150
12490210921,71sleep012584-21latency_hist09:56:460
5533210716,38sleep123603-21cyclictest09:32:161
29141210715,36sleep10-21swapper/107:22:051
21576210748,16sleep10-21swapper/108:42:011
26715210612,74sleep226735-21/usr/sbin/munin08:57:122
2587221060,15sleep025873-21munin-plugin-st12:21:450
10085210611,82sleep110169-21grep09:47:141
10085210611,82sleep110169-21grep09:47:141
4814210513,38sleep10-21swapper/107:47:091
2339521058,44sleep123436-21ls08:47:101
1181021057,22sleep111867-21sendmail-msp11:36:451
8886210415,38sleep10-21swapper/108:01:471
8886210415,38sleep10-21swapper/108:01:471
7763210449,43sleep17793-21munin-run09:41:451
19007210420,24sleep20-21swapper/210:16:472
1113210414,36sleep10-21swapper/107:36:471
7873210316,63sleep37546-21/usr/sbin/munin07:57:333
7873210316,63sleep37546-21/usr/sbin/munin07:57:333
4931210325,52sleep24924-21apt-get09:32:012
432721038,35sleep10-21swapper/111:12:021
2566521028,14sleep10-21swapper/110:36:571
28768210112,72sleep10-21swapper/110:46:591
25260210113,72sleep325388-21sed12:17:163
2248210045,43sleep12298-21systemd-run11:06:451
16745210018,55sleep316874-21unixbench_multi10:07:153
599129811,71sleep10-21swapper/107:51:571
3060029816,65sleep030745-21latency_hist12:36:470
2427829813,60sleep30-21swapper/307:07:133
2036129817,57sleep10-21swapper/112:02:121
305332969,32sleep10-21swapper/110:52:081
305332969,32sleep10-21swapper/110:52:081
153482967,35sleep10-21swapper/108:21:581
76829510,70sleep0769-21sshd07:33:230
324992958,12sleep10-21swapper/109:16:581
3218729532,18sleep10-21swapper/109:16:461
2147929518,53sleep321622-21unixbench_singl10:22:183
936329411,69sleep39469-21latency_hist09:46:483
2660729417,20sleep00-21swapper/012:22:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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