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2025-11-13 - 17:46

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 Thu Nov 13, 2025 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1714240996,4059sleep024585-21kworker/0:108:20:520
26359267744,590sleep026506-21grep09:39:410
6419240049,144sleep06556-21unixbench_multi11:59:420
30553235571,201sleep030557-21fschecks_time11:34:340
30553235571,201sleep030557-21fschecks_time11:34:340
2362323547,14sleep00-21swapper/007:49:260
24114233810,316sleep024141-21grep09:34:240
27406229812,189sleep00-21swapper/011:24:360
27406229812,189sleep00-21swapper/011:24:360
23794228324,196sleep0225-21systemd-journal09:34:080
23794228324,196sleep0225-21systemd-journal09:34:080
15406228026,242sleep015527-21ls09:04:410
15152227614,210sleep015214-21processes10:44:380
12951227148,200sleep00-21swapper/008:59:120
30151224949,119sleep030170-21latency_hist11:34:100
1187622410,6sleep10-21swapper/108:54:321
1579422376,196sleep00-21swapper/012:29:420
35502228128,59sleep03564-21kernelversion10:09:370
35502228128,59sleep03564-21kernelversion10:09:370
2604922059,185sleep3362-21snmpd07:54:513
2604922059,185sleep3362-21snmpd07:54:513
16701220515,132sleep00-21swapper/010:49:390
16701220515,132sleep00-21swapper/010:49:390
15794220225,110sleep00-21swapper/007:24:380
2937220119,168sleep32939-21find08:24:433
26954219630,101sleep026657-21/usr/sbin/munin07:59:320
200121967,176sleep028419-21kworker/0:110:04:330
200121967,176sleep028419-21kworker/0:110:04:330
11695219235,140sleep011720-21modprobe12:19:080
9156218137,119sleep00-21swapper/008:44:510
9156218137,119sleep00-21swapper/008:44:510
2094921736,156sleep0362-21snmpd11:04:170
495721705,32sleep00-21swapper/010:14:300
1936921708,17sleep00-21swapper/007:34:400
24676216723,67sleep024752-21systemctl11:14:390
24676216723,67sleep024752-21systemctl11:14:390
2259215921,32sleep00-21swapper/008:24:230
828221586,120sleep00-21swapper/012:05:440
23933215335,105sleep024026-21latency_hist11:14:100
2008121518,129sleep020180-21timerwakeupswit09:19:430
742821499,39sleep00-21swapper/008:39:460
6846214912,123sleep06872-21fschecks_time10:19:590
31052214612,88sleep031122-21gpgv08:14:100
31052214612,88sleep031122-21gpgv08:14:100
10205214517,93sleep010241-21fschecks_time08:49:350
32447214425,99sleep00-21swapper/009:59:440
1092821428,98sleep010939-21vmstat10:30:000
11250214185,43sleep011291-21ntpq07:09:360
8935213518,98sleep39027-21fschecks_time12:09:303
21336213554,65sleep00-21swapper/007:39:450
2229621349,84sleep022435-21latency_hist09:29:120
3290213331,22sleep03401-21timerwakeupswit11:49:490
3290213331,22sleep03401-21timerwakeupswit11:49:490
25726213125,41sleep00-21swapper/011:19:270
25726213125,41sleep00-21swapper/011:19:270
20002212815,48sleep020073-21switchtime10:59:410
4548212628,77sleep30-21swapper/310:14:083
4548212628,77sleep30-21swapper/310:14:083
18717212645,24sleep00-21swapper/007:34:120
18496212615,91sleep218654-21unixbench_multi10:54:422
18496212615,91sleep218654-21unixbench_multi10:54:422
6652212226,46sleep00-21swapper/008:39:090
6652212226,46sleep00-21swapper/008:39:090
32104211946,60sleep031578-21/usr/sbin/munin08:14:550
961321189,49sleep09654-21munin-run10:29:110
11587211611,44sleep00-21swapper/010:34:250
10242211614,41sleep110277-21idleruntime08:49:361
8635211437,38sleep00-21swapper/007:04:110
24808211324,74sleep2225-21systemd-journal07:54:092
18014211217,77sleep218163-21awk07:29:452
9940211028,47sleep0362-21snmpd07:06:210
1351921107,15sleep00-21swapper/012:24:210
17882210923,41sleep10-21swapper/109:14:231
17882210923,41sleep10-21swapper/109:14:231
32076210813,77sleep232162-21perl11:39:332
32076210813,77sleep232162-21perl11:39:332
25632210829,45sleep025101-21/usr/sbin/munin07:54:390
25632210829,45sleep025101-21/usr/sbin/munin07:54:390
22556210815,73sleep222557-21/usr/sbin/munin11:09:242
9273210625,63sleep19304-21/usr/sbin/munin07:04:361
8029210621,59sleep16676-21kworker/u8:110:24:121
1339921066,28sleep00-21swapper/007:15:220
1339921066,28sleep00-21swapper/007:15:220
10663210611,81sleep310737-21find08:49:463
14036210421,69sleep314050-21vmstat10:39:453
418521029,76sleep00-21swapper/008:29:400
9876210110,67sleep00-21swapper/012:11:090
65721015,58sleep00-21swapper/011:42:500
65721015,58sleep00-21swapper/011:42:500
3031421007,77sleep30-21swapper/311:34:133
28232210026,57sleep00-21swapper/008:04:250
1798021007,78sleep018072-21sort09:14:300
1798021007,78sleep018072-21sort09:14:300
952429814,18sleep30-21swapper/310:29:103
2231629816,68sleep122339-21sed11:09:111
709629618,60sleep27129-21ntp_kernel_pll_10:20:052
976929527,44sleep29494-21apt-get10:29:132
183252956,12sleep10-21swapper/107:30:541
426529419,59sleep34319-21fschecks_count11:54:283
2769329314,63sleep227755-21/usr/sbin/munin09:44:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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