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2026-07-09 - 00:40

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 Wed Jul 08, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13183285868,8561sleep07908-21kworker/0:112:28:450
13183285868,8561sleep07908-21kworker/0:112:28:450
130432766310,7637sleep211060-21kworker/2:112:28:432
130432766310,7637sleep211060-21kworker/2:112:28:432
21378218349,1800sleep230915-21kworker/u8:209:29:252
13256215835,1558sleep13149-21kworker/1:212:28:461
13256215835,1558sleep13149-21kworker/1:212:28:461
16632288316,849sleep116671-21/usr/sbin/munin09:14:511
16632288316,849sleep116671-21/usr/sbin/munin09:14:511
2021026757,652sleep020259-21ntpq07:44:320
15913266422,624sleep215919-21/usr/sbin/munin10:54:302
576624839,337sleep029279-21kworker/u8:012:04:350
15920247326,429sleep315965-21/usr/sbin/munin10:54:313
14037242417,390sleep314076-21ntpq12:29:293
9234229033,199sleep00-21swapper/007:10:170
15152223851,82sleep00-21swapper/007:29:220
32266223612,209sleep232268-21sshd08:21:192
687922199,168sleep06969-21grep08:44:260
687922199,168sleep06969-21grep08:44:260
298212214132,19sleep00-21swapper/008:14:270
298212214132,19sleep00-21swapper/008:14:270
10535221215,91sleep010701-21unixbench_multi12:19:370
10535221215,91sleep010701-21unixbench_multi12:19:370
4311220328,147sleep00-21swapper/008:34:370
259022026,181sleep00-21swapper/008:29:330
14363218212,151sleep014515-21latency_hist09:09:090
10324217310,100sleep013215-1kworker/0:0H08:54:350
1876921707,14sleep00-21swapper/011:04:250
4917216810,128sleep00-21swapper/012:04:070
31364216710,61sleep00-21swapper/009:59:350
2714121587,94sleep00-21swapper/009:44:540
2714121587,94sleep00-21swapper/009:44:540
2476821558,84sleep024776-21forks09:39:410
1181621539,18sleep00-21swapper/007:19:210
20822215214,123sleep020930-21latency_hist09:29:070
1934421435,126sleep00-21swapper/007:41:370
1934421435,126sleep00-21swapper/007:41:370
6782214219,109sleep26784-21entropy07:04:302
6782214219,109sleep26784-21entropy07:04:302
2848214217,102sleep00-21swapper/010:14:080
2738213990,33sleep02888-21unixbench_singl11:54:380
22012213818,105sleep222142-21sed07:49:382
22012213818,105sleep222142-21sed07:49:382
1655321319,37sleep00-21swapper/012:39:070
5235212752,59sleep00-21swapper/008:39:220
24662212732,64sleep124649-21apt-get09:39:211
16810212712,54sleep016908-21grep07:34:270
12722212416,40sleep00-21swapper/010:44:270
7321212252,54sleep07449-21cat12:09:360
128421208,51sleep01298-21munin-run10:09:070
15080211549,55sleep08957-21kworker/0:010:51:500
8419211415,81sleep28546-21/usr/sbin/munin10:29:362
3691211422,66sleep33780-21fschecks_time11:59:263
60521138,84sleep00-21swapper/008:24:560
28161211311,80sleep00-21swapper/011:34:240
23891211226,65sleep224040-21head07:54:472
15832211219,74sleep115946-21timerandwakeup12:34:361
10663211220,75sleep210800-21latency_hist10:39:082
7530211017,76sleep37499-21latency_hist10:29:083
7530211017,76sleep37499-21latency_hist10:29:083
29878211010,83sleep129566-21/usr/sbin/munin11:39:291
518421090,6sleep10-21swapper/108:39:091
21876210973,18sleep00-21swapper/007:49:360
21876210973,18sleep00-21swapper/007:49:360
27801210832,63sleep027827-21munin-run08:09:060
27801210832,63sleep027827-21munin-run08:09:060
22482210717,72sleep30-21swapper/309:33:143
1736210729,66sleep01763-21munin-run11:54:060
1081210714,75sleep21173-21timerandwakeup11:49:362
7300210627,61sleep17378-21timerandwakeup07:04:411
7300210627,61sleep17378-21timerandwakeup07:04:411
26565210618,73sleep226671-21fschecks_time11:29:252
1367021067,12sleep20-21swapper/212:29:202
8345210530,14sleep00-21swapper/008:49:230
30585210318,72sleep00-21swapper/011:40:420
5233210220,41sleep30-21swapper/308:39:203
2106210222,47sleep22100-21apt-get08:29:182
17333210215,72sleep117384-21/usr/sbin/munin10:59:261
14842210213,68sleep00-21swapper/009:09:250
14842210213,68sleep00-21swapper/009:09:250
13681210213,69sleep00-21swapper/007:24:250
3087210146,15sleep00-21swapper/010:14:200
23248210125,59sleep00-21swapper/007:54:250
6699210016,62sleep36673-21/usr/sbin/munin07:04:273
6699210016,62sleep36673-21/usr/sbin/munin07:04:273
32350210028,62sleep0364-21snmpd08:22:220
25432210019,64sleep325551-21unixbench_multi07:59:373
24221210045,28sleep00-21swapper/009:39:080
237412996,51sleep30-21swapper/311:19:293
2646629823,58sleep00-21swapper/011:29:190
163402989,69sleep00-21swapper/009:14:170
163402989,69sleep00-21swapper/009:14:170
1587529716,65sleep215941-21apt-key09:14:072
1587529716,65sleep215941-21apt-key09:14:072
1400229720,56sleep10-21swapper/110:49:201
1420429612,64sleep00-21swapper/012:29:340
1360129615,61sleep313695-21/usr/sbin/munin09:04:363
1247729618,59sleep00-21swapper/009:00:490
872329420,13sleep00-21swapper/012:14:320
3088629420,45sleep230878-21apt-get09:59:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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