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2026-05-03 - 11:34

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 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30445211888,1165sleep131198-1kworker/1:1H23:15:421
918290211,880sleep01489-1kworker/0:0H20:00:350
918290211,880sleep01489-1kworker/0:0H20:00:350
14352259417,560sleep214421-21/usr/sbin/munin00:05:462
1020825109,488sleep2191-21jbd2/mmcblk2p2-20:30:202
23625242020,382sleep123657-21modprobe22:55:151
1416235610,203sleep11482-21cpuspeed21:45:331
10337233816,301sleep110356-40ogrotate23:55:151
18566228896,178sleep10-21swapper/120:55:391
3668228578,179sleep13814-21unixbench_singl21:50:461
20446226069,64sleep10-21swapper/122:45:171
5359225884,90sleep15413-21latency_hist20:15:171
1557422578,215sleep115563-21apt-get00:10:291
2922223735,183sleep12430-21/usr/sbin/munin20:06:211
1748422297,208sleep117546-21cat19:10:371
4762221449,151sleep14764-21apt-get21:55:271
31260221116,139sleep131443-21apt-config19:55:191
24547220711,180sleep124635-21cat22:55:431
21109220710,58sleep121166-21/usr/sbin/munin21:05:161
15177220621,99sleep115297-21gpgv00:10:171
10340220512,99sleep110431-21fschecks_time20:30:351
25505218111,158sleep125549-21ntpq19:35:401
6417217313,147sleep06500-21fschecks_time22:00:340
22258217011,71sleep10-21swapper/100:30:451
1555216653,97sleep11640-21mailstats23:25:431
8008216528,89sleep18070-21sendmail_mailqu23:45:461
31045216514,136sleep231123-21find23:15:592
2323721637,144sleep123273-21awk19:30:151
19102216011,137sleep019110-21df22:40:320
22491215925,112sleep222624-21sed00:30:502
17741215874,25sleep10-21swapper/100:15:461
1557121559,131sleep023632-21kworker/u8:100:10:280
3256521539,33sleep10-21swapper/121:40:371
5282214615,45sleep00-21swapper/020:15:160
22440214515,27sleep30-21swapper/322:50:323
18371214210,115sleep018378-21sh20:55:340
10006213911,115sleep010123-21latency_hist20:30:180
10006213911,115sleep010123-21latency_hist20:30:180
27525213855,65sleep126631-21/usr/sbin/munin19:41:051
20790213742,28sleep10-21swapper/122:45:251
12584213771,51sleep112669-21mailstats20:35:561
12584213771,51sleep112669-21mailstats20:35:561
20443213658,39sleep10-21swapper/100:25:361
15018213415,27sleep10-21swapper/119:05:161
15018213415,27sleep10-21swapper/119:05:161
15167213019,51sleep10-21swapper/120:45:291
5502212947,46sleep15572-21sed23:40:171
32313212917,40sleep132431-21unixbench_multi19:56:121
308021296,108sleep03120-21ps23:30:430
1289221288,76sleep112980-21perl22:20:341
14078212633,80sleep114140-21uname20:40:451
29514212136,44sleep10-21swapper/119:50:181
11040212115,85sleep10-21swapper/122:15:171
23530212017,24sleep10-21swapper/119:30:311
16652211658,16sleep10-21swapper/119:10:171
16652211658,16sleep10-21swapper/119:10:171
6083211540,58sleep26055-21latency_hist22:00:162
5598211335,18sleep10-21swapper/120:15:291
11007211317,81sleep011039-21date22:15:160
26231211224,67sleep026376-21grep23:00:470
23167211256,44sleep122934-21/usr/sbin/munin21:10:371
23167211256,44sleep122934-21/usr/sbin/munin21:10:371
19711211121,67sleep219858-21grep22:40:462
28309211025,69sleep328313-21modprobe23:10:153
32524210810,80sleep032564-21/usr/sbin/munin21:40:360
1112921078,41sleep111130-21ntp_states23:55:431
20640210611,79sleep320681-21if_eth019:20:363
14351210512,55sleep114417-21cpuspeed22:25:311
30855210222,54sleep330920-21fschecks_time21:35:343
1431321028,13sleep20-21swapper/222:25:202
7136210110,49sleep17289-21gpgv23:45:171
7136210110,49sleep17289-21gpgv23:45:171
31562210125,52sleep231559-21apt-get19:55:282
30110210117,62sleep230271-21grep23:15:182
281252999,19sleep10-21swapper/121:25:431
281252999,19sleep10-21swapper/121:25:431
833029810,75sleep38332-21sshd20:24:193
719229812,64sleep00-21swapper/020:20:290
2617929710,72sleep026206-21fschecks_count21:20:330
2617929710,72sleep026206-21fschecks_count21:20:330
105829621,59sleep31098-21fschecks_time20:00:543
105829621,59sleep31098-21fschecks_time20:00:543
963729518,58sleep29153-21apt-get22:10:252
836229548,10sleep10-21swapper/122:05:441
2304429525,53sleep323060-21sort21:10:353
2304429525,53sleep323060-21sort21:10:353
294772948,25sleep10-21swapper/121:30:401
237429414,65sleep22415-21sed23:30:162
177562948,38sleep10-21swapper/122:35:361
1681129418,39sleep10-21swapper/120:50:341
1332029416,59sleep013334-21idleruntime-cro20:40:150
1332029416,59sleep013334-21idleruntime-cro20:40:150
82132930,7sleep30-21swapper/322:05:373
2904229319,20sleep00-21swapper/019:45:490
1627429312,67sleep016304-21awk22:30:390
878229212,43sleep115117-21cyclictest20:25:351
878229212,43sleep115117-21cyclictest20:25:351
1554429219,52sleep215052-21apt-get00:10:262
1353529214,63sleep113585-21wc00:05:161
454329123,25sleep30-21swapper/320:10:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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