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2025-12-04 - 22:56

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 Dec 04, 2025 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22866276616,732sleep022879-21/usr/sbin/munin10:13:270
22866276616,732sleep022879-21/usr/sbin/munin10:13:270
13025252514,497sleep213018-21apt-get09:43:122
13025252514,497sleep213018-21apt-get09:43:122
3140725208,496sleep230397-21/usr/sbin/munin10:39:172
17446247018,405sleep317593-21grep08:13:293
27811245017,417sleep027829-21/usr/sbin/munin08:48:100
27811245017,417sleep027829-21/usr/sbin/munin08:48:100
27980241517,380sleep228026-21install07:07:582
2417235629,287sleep32550-21latency_hist10:52:583
15053234331,211sleep315117-21sendmail_mailqu09:48:263
15053234331,211sleep315117-21sendmail_mailqu09:48:263
1060323038,244sleep310700-21sed09:34:213
17980230228,28sleep30-21swapper/309:58:203
141592264106,58sleep30-21swapper/309:46:203
141592264106,58sleep30-21swapper/309:46:203
965022600,94sleep326432-21cyclictest09:32:593
965022600,94sleep326432-21cyclictest09:32:593
25398225640,205sleep322178-1kworker/3:2H10:22:593
13325225579,55sleep30-21swapper/311:27:583
7890224742,90sleep38038-21latency_hist09:27:593
30835222280,90sleep330968-21apt-config08:57:593
15374221447,151sleep215388-21irqstats08:08:192
2984221375,18sleep30-21swapper/307:29:033
2984221375,18sleep30-21swapper/307:29:033
22487220651,102sleep322580-21grep10:13:183
22487220651,102sleep322580-21grep10:13:183
2576621968,176sleep05666-21snmpd12:07:520
23047218921,150sleep123127-21tune2fs11:58:161
145821819,157sleep31618-21latency_hist12:32:583
4064217612,148sleep14150-21ls09:13:271
1578217414,93sleep30-21swapper/309:07:563
1578217414,93sleep30-21swapper/309:07:563
7036217214,141sleep37047-21modprobe07:42:563
4813216711,140sleep24891-21find10:58:272
27924216542,41sleep30-21swapper/308:48:223
27924216542,41sleep30-21swapper/308:48:223
12386216512,140sleep012397-21needreboot07:58:230
12386216512,140sleep012397-21needreboot07:58:230
7400216021,118sleep10-21swapper/111:08:181
7400216021,118sleep10-21swapper/111:08:181
83821598,99sleep3977-21latency_hist10:47:583
27007215927,106sleep127139-21unixbench_multi12:08:411
16257215748,29sleep3910-21sendmail-mta11:36:183
19556215665,53sleep30-21swapper/308:22:573
247421508,24sleep30-21swapper/309:08:293
4894214951,77sleep35036-21unixbench_multi10:58:283
10875214910,124sleep30-21swapper/307:53:223
10875214910,124sleep30-21swapper/307:53:223
16384214742,89sleep3225-21systemd-journal08:12:563
29901214310,117sleep30-21swapper/312:18:253
26717214319,12sleep30-21swapper/310:27:193
632121368,114sleep36393-21latency_hist09:22:583
4379213516,38sleep30-21swapper/309:13:373
26359213350,71sleep326458-21fschecks_time08:43:173
26359213350,71sleep326458-21fschecks_time08:43:173
27268212920,44sleep30-21swapper/310:28:203
12655212949,56sleep30-21swapper/307:58:303
12655212949,56sleep30-21swapper/307:58:303
32245212818,14sleep30-21swapper/312:27:493
29982212845,67sleep330129-21cat07:12:593
1989212820,86sleep01997-21uniq09:08:170
32518212620,80sleep10-21swapper/112:28:081
25070212628,86sleep325113-21cat08:39:173
20898212616,56sleep30-21swapper/310:08:173
17798212619,88sleep017863-21fschecks_time09:58:170
20198212568,38sleep30-21swapper/308:23:223
1614221258,100sleep30-21swapper/309:53:073
13291212418,86sleep10-21swapper/109:43:191
13291212418,86sleep10-21swapper/109:43:191
22712212230,42sleep322721-21munin-run11:57:573
9118212110,12sleep00-21swapper/009:29:420
9118212110,12sleep00-21swapper/009:29:420
24714212123,79sleep024208-21apt-get08:38:090
28030212047,26sleep328042-21munin-node07:07:593
19654211920,82sleep019692-21ntpq10:03:210
19654211920,82sleep019692-21ntpq10:03:210
4567211824,38sleep30-21swapper/307:33:233
32253211822,72sleep132283-21idleruntime-cro12:27:551
31176211824,43sleep30-21swapper/308:58:073
2081321186,13sleep30-21swapper/311:49:263
19587211815,88sleep019721-21cut11:47:570
19587211815,88sleep019721-21cut11:47:570
594211643,60sleep31-21systemd07:22:573
20608211610,84sleep30-21swapper/310:08:013
20608211610,84sleep30-21swapper/310:08:013
1684211610,89sleep21759-21find10:48:292
7065211415,79sleep17082-21latency_hist11:07:581
26905211320,72sleep227029-21cat08:43:282
26905211320,72sleep227029-21cat08:43:282
29311211119,72sleep129445-21sed07:08:291
7418211012,82sleep07445-21fschecks_count07:43:170
11561211027,65sleep311646-21fschecks_time09:38:173
11561211027,65sleep311646-21fschecks_time09:38:173
14472210926,44sleep314487-21awk08:03:313
28220210816,62sleep10-21swapper/108:48:281
28220210816,62sleep10-21swapper/108:48:281
2163210619,36sleep30-21swapper/307:27:583
2163210619,36sleep30-21swapper/307:27:583
20427210413,78sleep020504-21grep11:48:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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