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2026-05-04 - 12:18

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 Sun May 03, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30883217478,1725sleep024639-1kworker/0:1H11:55:310
30883217478,1725sleep024639-1kworker/0:1H11:55:310
28643213658,1343sleep328668-21df10:05:433
28643213658,1343sleep328668-21df10:05:433
2858529316,917sleep228144-1kworker/2:1H10:05:332
2858529316,917sleep228144-1kworker/2:1H10:05:332
20357279418,762sleep020435-21memory09:40:360
872277110,744sleep1886-21/usr/sbin/munin12:00:451
10835276320,725sleep210844-21/usr/sbin/munin09:10:382
2061126678,647sleep0191-21jbd2/mmcblk2p2-08:00:190
19069254999,433sleep319080-21apt-get07:55:253
154862354145,149sleep30-21swapper/307:45:153
29740232819,288sleep229744-21latency_hist08:30:162
1466231618,274sleep01583-21grep10:20:460
1466231618,274sleep01583-21grep10:20:460
20333229218,261sleep320351-21grep09:40:353
3057227117,60sleep32863-21latency_hist12:10:163
207592259142,91sleep30-21swapper/311:25:133
25723224859,150sleep30-21swapper/311:40:163
101072237105,24sleep30-21swapper/312:30:433
21531222664,31sleep321582-21processes11:25:423
4640221214,179sleep34643-21cron12:15:133
12309220943,142sleep30-21swapper/309:15:353
10958220682,47sleep311030-21mailstats09:10:433
1339220437,18sleep30-21swapper/312:05:153
10763220161,93sleep310801-21modprobe07:30:133
9837220050,102sleep325884-21systemd-journal10:50:133
22381219815,166sleep022526-21latency_hist11:30:150
23153219569,19sleep30-21swapper/308:06:233
10221219371,51sleep310307-21grep10:50:333
7724218712,143sleep30-21swapper/307:20:163
341621879,168sleep013441-21snmpd10:27:360
3132218728,79sleep13279-21grep08:45:491
3132218728,79sleep13279-21grep08:45:491
23108218069,91sleep322874-21cron09:50:163
3039521768,149sleep30-21swapper/310:10:353
2843321739,25sleep30-21swapper/308:25:283
25903217012,145sleep325982-21sort09:56:543
1312421647,18sleep30-21swapper/307:35:423
27880216325,122sleep327905-21awk11:45:373
2770216315,133sleep32839-21basename07:05:343
23997216057,89sleep324018-21apt-key11:35:153
9321215514,100sleep39361-21grep09:05:383
3074215511,103sleep33224-21unixbench_singl10:25:463
697221547,135sleep37009-21ps12:20:423
19006215013,12sleep30-21swapper/309:35:423
5542214911,75sleep30-21swapper/308:55:163
399021488,67sleep30-21swapper/308:50:273
3179921479,123sleep331836-21fschecks_count10:15:323
10181214224,99sleep210200-21modprobe09:10:132
8357214167,62sleep38392-21ntpq07:20:403
12576214025,98sleep112640-21cat09:15:411
12316213917,84sleep31-21systemd07:35:143
17545213712,87sleep317624-21cat07:50:373
17545213712,87sleep317624-21cat07:50:373
30848213418,100sleep130338-21apt-get11:55:241
30848213418,100sleep130338-21apt-get11:55:241
27592213317,23sleep20-21swapper/208:20:472
2622621318,89sleep325939-21/usr/sbin/munin11:40:363
2984212879,22sleep30-21swapper/308:45:473
2984212879,22sleep30-21swapper/308:45:473
25905212589,17sleep30-21swapper/308:15:443
14179212419,87sleep214234-21cpuspeed07:40:302
10939212317,81sleep211027-21wc12:35:142
15903212213,96sleep115981-21mailstats09:25:431
872212112,93sleep2883-21df_inode10:20:322
872212112,93sleep2883-21df_inode10:20:322
1249121218,16sleep30-21swapper/310:55:463
1249121218,16sleep30-21swapper/310:55:463
15264211811,17sleep30-21swapper/311:05:393
8309211610,27sleep30-21swapper/312:25:343
4617211513,24sleep34678-21cat07:10:223
28238211416,23sleep328383-21date08:25:163
17113211311,88sleep017220-21unixbench_singl11:10:450
14905211313,86sleep014943-21grep11:05:320
32195211210,26sleep332331-21date12:00:153
32195211210,26sleep332331-21date12:00:153
16984211213,18sleep30-21swapper/311:10:443
20138210813,82sleep220144-21df_inode09:40:302
7677210711,16sleep30-21swapper/310:40:443
3338210721,65sleep22862-21apt-get12:10:232
31238210716,78sleep331265-21modprobe08:35:133
29038210712,76sleep30-21swapper/311:50:253
13662210710,80sleep30-21swapper/311:00:383
8619210610,16sleep30-21swapper/309:05:133
17032210515,15sleep317112-21tune2fs09:30:333
1567321057,15sleep30-21swapper/309:25:373
1115210521,16sleep30-21swapper/308:40:423
1092421050,6sleep20-21swapper/207:30:152
24386210214,73sleep124407-21apt11:35:251
18005210123,58sleep018148-21sed07:50:460
18005210123,58sleep018148-21sed07:50:460
3911210012,71sleep30-21swapper/310:30:303
23511210017,57sleep223525-21grep09:50:472
1385429813,18sleep20-21swapper/209:20:312
2886529713,67sleep128918-21latency10:05:491
2886529713,67sleep128918-21latency10:05:491
56929617,24sleep20-21swapper/210:20:152
12352968,13sleep30-21swapper/310:20:413
12352968,13sleep30-21swapper/310:20:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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