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2026-04-04 - 09:11

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 Sat Apr 04, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5912211416,1124sleep03553-1kworker/0:0H19:47:300
2706926647,641sleep027119-21unin-run00:21:580
32056263120,588sleep232130-21/usr/sbin/munin22:52:272
10345263014,601sleep310373-21/usr/sbin/munin23:27:213
10345263014,601sleep310373-21/usr/sbin/munin23:27:213
995025496,532sleep09961-21ntpq21:42:230
1202224830,45sleep011-21ksoftirqd/020:07:000
993324657,414sleep013441-21snmpd19:57:360
8009243540,332sleep00-21swapper/019:52:270
13364240019,333sleep013383-21uname23:37:200
14587230715,275sleep214660-21find20:13:212
1693923027,279sleep017086-21awk23:47:290
1693923027,279sleep017086-21awk23:47:290
22093227920,59sleep00-21swapper/020:37:220
27939225622,217sleep327941-21sshd20:57:123
12903225033,197sleep013055-21latency_hist23:36:590
17412224113,213sleep217448-21ntpq20:22:222
15492223342,179sleep03553-1kworker/0:0H20:17:110
15492223342,179sleep03553-1kworker/0:0H20:17:110
21908223136,135sleep021935-21basename22:21:570
12580223013,202sleep312586-21/usr/sbin/munin20:07:243
20222222344,118sleep020391-21latency_hist22:17:000
1405822160,17sleep10-21swapper/120:13:071
24718221219,124sleep024867-21unixbench_singl00:12:290
322142211100,64sleep00-21swapper/022:52:300
17970221014,179sleep118105-21awk22:07:361
1454222008,135sleep00-21swapper/021:57:210
31565219515,138sleep031638-21awk21:07:260
28468218216,90sleep028524-21basename19:16:570
15906217937,67sleep025045-21cyclictest23:46:570
2525221789,40sleep00-21swapper/019:07:120
2525221789,40sleep00-21swapper/019:07:120
13320217813,62sleep00-21swapper/021:52:290
11136217739,79sleep00-21swapper/021:47:160
2322217312,64sleep02470-21latency_hist19:37:000
2887216632,110sleep33034-21grep23:02:303
27443216619,132sleep227484-21uniq00:22:162
987721630,7sleep30-21swapper/323:27:003
18169216210,141sleep113441-21snmpd20:25:151
29246216133,68sleep00-21swapper/019:17:260
24232215671,17sleep00-21swapper/022:27:260
19814215339,54sleep00-21swapper/023:57:270
6849214632,99sleep06903-21processes21:32:260
6849214632,99sleep06903-21processes21:32:260
15179214529,100sleep015204-21munin-run20:16:590
1337821438,117sleep013407-21idleruntime-cro20:11:580
22824214030,98sleep022866-21tr00:07:200
7349213413,109sleep07411-21uname23:17:250
27105213411,81sleep027243-21unixbench_singl20:52:280
30907213235,46sleep00-21swapper/019:22:270
22568213035,81sleep022604-21ntp_kernel_err22:22:210
11496212919,87sleep00-21swapper/023:32:070
27753212515,96sleep027789-21ntp_kernel_pll_00:22:220
11285212533,74sleep00-21swapper/023:31:590
11285212533,74sleep00-21swapper/023:31:590
1327212137,40sleep00-21swapper/022:57:300
30539212014,23sleep230634-21perl00:32:172
4649211911,92sleep14714-21switchtime19:42:271
4649211911,92sleep14714-21switchtime19:42:271
3836211849,54sleep03893-21grep23:07:150
29547211818,78sleep10-21swapper/100:27:281
21456211828,76sleep021544-21cat00:02:270
2139721169,92sleep021448-21sendmail20:36:570
17648211662,16sleep00-21swapper/020:22:280
23688211519,75sleep123721-21munin-run00:11:571
29867211310,25sleep00-21swapper/021:02:220
1594221130,7sleep10-21swapper/122:02:181
17030211122,73sleep00-21swapper/022:06:580
620211019,18sleep20-21swapper/222:57:082
19254210929,65sleep019368-21wc20:27:290
18590210911,58sleep00-21swapper/022:11:590
24782210820,72sleep124787-21sort20:47:081
10842210811,80sleep110901-21latency20:02:221
9264210745,43sleep00-21swapper/021:41:590
9264210745,43sleep00-21swapper/021:41:590
6208210616,15sleep20-21swapper/223:12:302
28890210414,70sleep128403-21/usr/sbin/munin22:42:251
31580210339,54sleep030722-1kworker/u9:100:35:180
20619210311,77sleep320114-21apt-get22:17:073
55021029,75sleep132582-21/usr/sbin/munin21:12:241
3047210210,71sleep00-21swapper/021:22:000
19089210218,68sleep119135-21cat23:56:591
13142210213,70sleep213208-21/usr/sbin/munin21:52:272
6564210120,61sleep16595-21idleruntime-cro23:16:571
2803621018,71sleep00-21swapper/020:57:170
5315210034,16sleep00-21swapper/023:12:120
31995210017,68sleep132055-21processes22:52:261
29006210019,55sleep229089-21cut00:27:172
386229943,40sleep00-21swapper/021:22:290
2064429916,66sleep220114-21apt-get22:17:102
2480729822,18sleep00-21swapper/020:47:110
3053829713,66sleep330588-21/usr/sbin/munin19:22:173
219872969,12sleep20-21swapper/220:37:202
278812935,42sleep00-21swapper/022:38:360
2373929315,58sleep323826-21latency_hist00:11:593
1933129335,35sleep319302-21/usr/sbin/munin23:57:133
3021729223,17sleep00-21swapper/000:31:590
2417229222,17sleep00-21swapper/020:42:310
1425929225,43sleep314339-21fschecks_time21:57:163
1257329113,56sleep212094-21/usr/sbin/munin20:07:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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