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2026-07-24 - 04:36

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 Fri Jul 24, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190322757125,7530sleep017306-21kworker/0:223:58:090
42682481012,4783sleep129822-21kworker/1:119:43:351
32192246247,4605sleep032144-21apt-get21:13:560
17683258711,562sleep217722-21ntpq22:08:362
11973249219,456sleep311975-21sshd21:51:333
1121224756,454sleep011248-21ntpq21:48:350
28580246023,421sleep028594-21sshd22:43:330
11395245152,96sleep00-21swapper/023:33:270
30928234714,285sleep031068-21tail00:33:420
26305233841,244sleep026330-21awk19:13:100
13222232435,211sleep013024-1kworker/0:0H20:13:250
16558231121,275sleep016635-21wc23:48:410
16558231121,275sleep016635-21wc23:48:410
27935227414,204sleep028079-21unixbench_multi20:58:420
31397226718,221sleep331461-21fschecks_time22:53:293
6089226076,20sleep00-21swapper/019:48:420
30453224535,197sleep030534-21grep21:08:310
31448223350,122sleep00-21swapper/019:28:120
7831222747,110sleep00-21swapper/021:38:300
25180222616,197sleep025262-21fschecks_time22:33:280
28809222550,129sleep028810-21cpu21:03:260
28809222550,129sleep028810-21cpu21:03:260
8302222019,180sleep28366-21sort23:23:282
8302222019,180sleep28366-21sort23:23:282
23803221737,119sleep012-21rcu_sched22:28:320
13032221634,49sleep00-21swapper/020:13:130
22551221115,116sleep00-21swapper/020:43:240
1565522068,187sleep0364-21snmpd23:47:400
28406219864,81sleep00-21swapper/000:28:080
28406219864,81sleep00-21swapper/000:28:080
32307218946,21sleep00-21swapper/019:28:400
20589218830,122sleep020655-21ls22:18:310
1230218816,155sleep11340-21users22:58:441
1230218816,155sleep11340-21users22:58:441
3549218723,145sleep23695-21unixbench_singl21:23:432
291972175105,54sleep029272-21xargs19:18:430
1522421737,155sleep015258-21ntp_states20:18:340
615621719,146sleep00-21swapper/021:33:210
1505121710,39sleep215055-21unixbench_multi21:58:422
26860216815,139sleep126878-21basename00:23:091
26860216815,139sleep126878-21basename00:23:091
30838216739,23sleep00-21swapper/022:50:480
13354216624,125sleep20-21swapper/221:54:312
18516216210,63sleep00-21swapper/020:28:390
5267216143,63sleep00-21swapper/023:13:290
26290215528,87sleep026408-21timerandwakeup20:53:410
17313215069,40sleep00-21swapper/022:08:260
1396821469,25sleep00-21swapper/021:58:120
12597214526,102sleep112113-21apt-get21:53:211
7353214110,27sleep07502-21tail23:18:410
7353214110,27sleep07502-21tail23:18:410
478321419,120sleep3364-21snmpd23:12:593
2007921407,11sleep00-21swapper/022:17:340
2007921407,11sleep00-21swapper/022:17:340
375621385,81sleep00-21swapper/019:43:130
24629213345,52sleep01-21systemd20:48:410
206621329,65sleep0364-21snmpd23:03:280
1097721325,50sleep00-21swapper/023:32:340
2597213039,25sleep00-21swapper/021:23:120
2597213039,25sleep00-21swapper/021:23:120
4229212421,89sleep34422-21apt-config21:28:123
1110212454,16sleep00-21swapper/022:58:430
1110212454,16sleep00-21swapper/022:58:430
718221230,38sleep17185-21fschecks_time19:53:311
23677212024,73sleep323193-21/usr/sbin/munin19:03:373
22437211944,14sleep00-21swapper/000:08:230
26753211629,74sleep026795-21fschecks_count22:38:290
24498211621,26sleep10-21swapper/100:13:401
1755221167,98sleep0364-21snmpd20:27:210
1755221167,98sleep0364-21snmpd20:27:210
15473211630,66sleep115501-21munin-plugin-st22:03:101
13257211645,20sleep00-21swapper/023:38:350
966921157,10sleep00-21swapper/020:00:580
966921157,10sleep00-21swapper/020:00:580
5174211437,61sleep00-21swapper/021:28:530
15766211413,19sleep10-21swapper/122:03:261
7978211318,75sleep18030-21latency_hist23:23:101
7978211318,75sleep18030-21latency_hist23:23:101
185721135,44sleep00-21swapper/019:35:510
1765021120,7sleep10-21swapper/122:08:341
24478211143,43sleep124514-21munin-run19:08:101
2206721115,70sleep00-21swapper/020:40:250
817421106,70sleep00-21swapper/019:57:060
7604211012,76sleep37685-21cat19:53:423
404821096,69sleep00-21swapper/021:27:360
32064210913,78sleep232110-21awk19:28:342
3248210823,64sleep13264-21ls23:08:091
9439210711,55sleep09505-21idleruntime21:43:310
9109210611,77sleep19179-21/usr/sbin/munin19:58:401
9109210611,77sleep19179-21/usr/sbin/munin19:58:401
30715210614,70sleep130223-21/usr/sbin/munin00:33:391
1631621069,46sleep016382-21awk22:03:410
341021045,64sleep00-21swapper/019:40:350
28689210430,21sleep028691-21apt-get00:28:210
28689210430,21sleep028691-21apt-get00:28:210
22454210417,74sleep222507-21processes22:23:372
2908221030,24sleep129086-21unixbench_singl22:43:421
11436210314,72sleep311498-21sed20:08:113
26659210212,22sleep00-21swapper/019:13:180
31113210117,69sleep231262-21latency_hist22:53:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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