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2026-08-29 - 18:50

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 Sat Aug 29, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122922642110,6398sleep032639-21kworker/0:109:39:370
122922642110,6398sleep032639-21kworker/0:109:39:370
20343235386,3519sleep214126-21kworker/2:008:22:022
293912220917,2174sleep015994-21kworker/u8:307:09:080
293912220917,2174sleep015994-21kworker/u8:307:09:080
18764279010,760sleep1201-21jbd2/mmcblk2p2-09:59:211
249552497115,330sleep225017-21fschecks_time10:19:162
28405247023,428sleep028492-21/usr/sbin/munin07:04:280
28405247023,428sleep028492-21/usr/sbin/munin07:04:280
19996244321,404sleep320132-21/usr/sbin/munin08:19:293
8376231224,267sleep38469-21fschecks_time07:44:163
8924229555,197sleep29033-21ls07:44:272
1366122950,7sleep10-21swapper/107:59:271
3273622510,43sleep229072-21cyclictest07:18:582
235482249107,20sleep20-21swapper/211:58:582
5397224444,184sleep21-21systemd09:18:562
108562244100,19sleep20-21swapper/211:18:562
5646223091,27sleep20-21swapper/207:34:262
21092221123,82sleep22238-21latency_hist09:08:582
21092221123,82sleep22238-21latency_hist09:08:582
7113222011,195sleep17157-21ntpq07:39:211
321552220109,69sleep20-21swapper/208:59:252
18915221832,167sleep218918-21cron08:18:552
8571221331,145sleep28646-21latency_hist09:28:572
3416220615,174sleep03344-21latency_hist07:28:590
21747220615,179sleep221724-21apt-get10:09:192
14482219916,122sleep214618-21grep09:44:402
3600219813,79sleep23622-21munin-plugin-st09:13:552
28442218615,111sleep228508-21grep10:29:262
18637218120,142sleep318722-21systemd11:43:573
18637218120,142sleep318722-21systemd11:43:573
16569218047,73sleep20-21swapper/209:53:572
2093321788,106sleep229072-21cyclictest11:49:172
27966217522,138sleep00-21swapper/010:29:120
2855121738,77sleep20-21swapper/208:49:122
3317217011,22sleep21-21systemd07:28:572
26078216737,108sleep226216-21grep12:04:272
1137821678,121sleep211438-21cpuspeed07:54:122
3685216418,24sleep20-21swapper/207:29:132
2658021598,134sleep20-21swapper/210:24:172
6810215846,58sleep20-21swapper/207:39:142
2212215828,109sleep20-21swapper/210:49:252
2212215828,109sleep20-21swapper/210:49:252
2106521586,92sleep2367-21snmpd10:07:052
7024215215,113sleep37156-21latency_hist09:23:573
942621507,128sleep29551-21cat09:29:262
3092521509,128sleep230937-21vmstat12:19:292
21450214725,97sleep20-21swapper/208:24:292
30992214433,77sleep231046-21timerandwakeup07:14:032
30992214433,77sleep231046-21timerandwakeup07:14:032
27034214410,111sleep00-21swapper/008:44:130
1858321429,31sleep218634-21systemd-run11:43:562
1858321429,31sleep218634-21systemd-run11:43:562
447521418,121sleep2367-21snmpd10:57:572
28258213916,105sleep228280-21awk08:48:552
15390213916,103sleep20-21swapper/211:33:022
4054213613,91sleep00-21swapper/010:54:280
18939213215,97sleep118597-21apt-get11:43:591
2376721317,14sleep20-21swapper/211:59:062
2376721317,14sleep20-21swapper/211:59:062
10191213127,17sleep20-21swapper/207:49:202
776021309,86sleep27908-21sed11:08:592
29486213027,70sleep20-21swapper/210:34:022
17009213063,54sleep217025-21modprobe11:38:552
3020021218,74sleep230307-21grep08:54:172
807212011,87sleep20-21swapper/210:44:282
50621200,8sleep10-21swapper/109:03:561
22692212012,63sleep022694-21sshd10:10:020
19823211659,15sleep20-21swapper/211:44:532
12824211612,88sleep012879-21idleruntime11:24:160
11686211615,84sleep011691-21apt-key09:38:570
24059211517,55sleep20-21swapper/208:34:182
1219921158,34sleep20-21swapper/209:39:272
1219921158,34sleep20-21swapper/209:39:272
23257211315,16sleep20-21swapper/210:14:082
16917211217,73sleep117025-21fschecks_time09:54:161
16917211217,73sleep117025-21fschecks_time09:54:161
2270821117,89sleep222749-21ntpq08:29:212
19505211117,78sleep119586-21sed08:19:191
1632521107,66sleep216399-21cat08:09:182
28266210916,76sleep328398-21unixbench_multi07:04:273
28266210916,76sleep328398-21unixbench_multi07:04:273
16782210918,75sleep316924-21sed08:09:283
13226210913,82sleep013257-21/usr/sbin/munin07:59:190
28851210843,42sleep128880-21munin-run07:08:571
28851210843,42sleep128880-21munin-run07:08:571
595210712,37sleep20-21swapper/207:19:162
43121078,65sleep2547-21date12:28:572
29388210520,68sleep328879-21apt-get07:09:073
29388210520,68sleep328879-21apt-get07:09:073
3156121047,63sleep231595-21ps10:39:232
1426121047,63sleep214268-21munin-run08:03:572
87221039,79sleep3884-21/usr/sbin/munin09:04:153
87221039,79sleep3884-21/usr/sbin/munin09:04:153
29611210222,60sleep129691-21tune2fs10:34:181
28823210112,70sleep328920-21/usr/sbin/munin08:49:213
28541210121,15sleep20-21swapper/212:14:162
15464210113,49sleep20-21swapper/208:05:022
2222210011,49sleep20-21swapper/212:34:102
1396521009,51sleep20-21swapper/211:28:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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