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2026-07-30 - 07:30

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 Jul 29, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138062859618,8560sleep213296-21apt-get11:28:042
132032704814,7022sleep28092-21kworker/2:111:26:512
132032704814,7022sleep28092-21kworker/2:111:26:512
16391242426,4222sleep013839-21kworker/0:011:34:560
24380253621,499sleep324411-21/usr/sbin/munin10:18:133
24380253621,499sleep324411-21/usr/sbin/munin10:18:133
30421239612,360sleep130459-21ls10:38:091
209732323125,175sleep10-21swapper/110:08:091
209732323125,175sleep10-21swapper/110:08:091
131082289128,138sleep113264-21unixbench_singl07:58:221
8193223310,207sleep18348-21latency_hist09:27:531
10730223166,26sleep10-21swapper/111:18:221
30789222220,185sleep230859-21wc10:38:182
2412222246,164sleep12494-21cut12:33:151
14390220561,43sleep114425-21grep08:03:191
8965220112,149sleep10-21swapper/109:28:211
21667220115,170sleep1360-21ntpd11:53:101
5790220011,176sleep35798-21uname09:18:183
24471219511,111sleep124563-21cat12:02:511
24751218717,140sleep11-21systemd08:37:511
16027218728,23sleep10-21swapper/108:08:191
13834218530,130sleep10-21swapper/111:28:231
1874218420,134sleep10-21swapper/112:32:511
8740218113,106sleep18834-21fschecks_time11:13:091
585218017,32sleep1606-21munin-run10:47:501
10004217817,143sleep310087-21apt-config11:17:523
3267621779,121sleep132755-21cat07:18:251
2077021769,151sleep120891-21cat08:23:211
27658217410,151sleep127728-21cat10:28:201
2278921749,145sleep122403-21/usr/sbin/munin10:13:141
13470217320,17sleep10-21swapper/109:43:151
11822217121,134sleep311881-21/usr/sbin/munin09:38:123
28431216611,141sleep328480-21ntpq12:13:153
26629216511,141sleep126634-21grep12:08:161
19949216311,23sleep10-21swapper/108:22:531
3760215812,127sleep13814-21latency_hist10:57:511
27190215817,19sleep10-21swapper/108:43:201
25527215821,20sleep10-21swapper/108:38:191
29972215710,132sleep130123-21latency_hist07:12:521
1245215320,20sleep10-21swapper/110:48:141
30114214815,59sleep10-21swapper/112:18:171
283692145103,22sleep10-21swapper/107:07:521
3143721449,35sleep10-21swapper/112:23:061
22195214428,98sleep322350-21latency_hist10:12:523
22195214428,98sleep322350-21latency_hist10:12:523
861214224,92sleep2898-21proc_pri09:03:192
31299214111,106sleep10-21swapper/108:58:051
2743214110,119sleep12764-21munin-run07:27:501
182421400,13sleep01825-21modprobe12:32:490
14841213528,96sleep114895-21cat09:48:111
829521338,20sleep10-21swapper/111:11:561
3203621309,65sleep132211-21sshd07:17:531
28637213034,67sleep228656-21apt-get10:33:012
28637213034,67sleep228656-21apt-get10:33:012
812421297,45sleep10-21swapper/107:43:161
29730212912,96sleep029746-21fschecks_count12:18:080
1170021299,70sleep111769-21idleruntime09:38:101
583221278,16sleep10-21swapper/111:03:121
1669821268,103sleep116848-21date11:37:521
182621246,106sleep00-21swapper/010:48:500
4331212117,88sleep24345-21latency_hist07:32:522
24419212121,71sleep324439-21latency_hist12:02:493
1960121209,53sleep10-21swapper/110:03:131
4139211715,81sleep04180-21ntp_kernel_err09:13:310
2823921178,15sleep10-21swapper/108:48:081
10246211748,53sleep110264-21kernelversion09:33:131
196421158,53sleep10-21swapper/109:08:061
196421158,53sleep10-21swapper/109:08:061
1646621159,18sleep116483-21kernelversion09:53:121
925021148,51sleep10-21swapper/107:48:051
925021148,51sleep10-21swapper/107:48:051
376821146,14sleep10-21swapper/109:13:191
2866221147,14sleep10-21swapper/110:33:041
2866221147,14sleep10-21swapper/110:33:041
731621138,93sleep1364-21snmpd07:41:351
17526211215,79sleep029952-1kworker/0:2H09:57:510
22918211014,81sleep222915-21systemd-run11:57:512
1903021108,50sleep10-21swapper/111:43:211
27083210923,46sleep30-21swapper/310:28:023
1801621096,45sleep10-21swapper/109:58:121
2651121069,45sleep10-21swapper/110:23:561
2651121069,45sleep10-21swapper/110:23:561
1640210630,63sleep10-21swapper/109:07:381
16911210420,53sleep216930-21apt-get11:38:012
12263210417,64sleep012418-21grep09:38:210
23182210314,72sleep023392-21latency_hist08:32:530
5938210210,72sleep26010-21/usr/sbin/munin09:18:212
23794210214,73sleep323873-21cat08:33:373
3219121008,24sleep20-21swapper/210:43:152
29931210013,74sleep029971-21latency_hist07:12:510
22174210014,70sleep222193-21latency_hist10:12:512
22174210014,70sleep222193-21latency_hist10:12:512
892329913,69sleep09001-21sed11:13:120
211412996,42sleep10-21swapper/111:50:561
249802985,41sleep10-21swapper/112:03:111
251712978,11sleep20-21swapper/212:03:172
1731229616,62sleep317359-21ntp_kernel_pll_11:38:143
39392955,41sleep10-21swapper/107:28:271
2981629547,32sleep129923-21grep08:53:091
1817829528,56sleep10-21swapper/111:42:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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