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2026-07-02 - 23:06

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 Jul 02, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262322653419,6501sleep018477-21kworker/0:208:50:030
244782112013,1085sleep04757-21kworker/0:210:30:110
1408325458,521sleep114086-21apt-get11:39:381
6355241519,379sleep36412-21/usr/sbin/munin07:49:493
3092623566,330sleep1364-21snmpd12:30:471
15748232238,70sleep10-21swapper/108:19:431
23725232148,146sleep123752-21munin-plugin-st10:29:271
237822290120,50sleep10-21swapper/108:44:591
29045228987,153sleep129138-21latency_hist07:19:301
29045228987,153sleep129138-21latency_hist07:19:301
8546227666,102sleep10-21swapper/109:39:471
24462273114,107sleep12212-21/usr/sbin/munin09:19:481
22628227212,245sleep222672-21ntpq08:40:232
21004224924,204sleep221021-21fschecks_count10:19:472
10493224573,55sleep110532-21latency_hist11:29:281
8951223532,183sleep19008-21idleruntime-cro07:59:281
27103223437,149sleep127178-21apt-config10:39:291
16323221936,139sleep116385-21fschecks_time10:04:471
192222109,157sleep11947-21munin-plugin-st09:19:281
643122069,161sleep16477-21ntp_kernel_pll_11:14:511
643122069,161sleep16477-21ntp_kernel_pll_11:14:511
29281220516,111sleep10-21swapper/107:19:421
29281220516,111sleep10-21swapper/107:19:421
8921219914,170sleep28961-21ps09:39:562
2875021990,23sleep125525-21cyclictest12:24:521
32754219818,128sleep10-21swapper/107:29:521
31324219451,63sleep131296-21latency_hist09:09:301
27783219119,159sleep227844-21fschecks_time07:14:472
27783219119,159sleep227844-21fschecks_time07:14:472
30743218815,158sleep230895-21sed09:04:592
3106621865,20sleep10-21swapper/107:24:511
3106621865,20sleep10-21swapper/107:24:511
5948218454,109sleep10-21swapper/109:29:581
18244217716,147sleep318258-21awk10:09:543
1591821759,151sleep016007-21cat11:44:500
1738221747,31sleep10-21swapper/108:24:471
27600217312,145sleep227094-21apt-get10:39:382
1897921738,45sleep10-21swapper/111:54:401
1897921738,45sleep10-21swapper/111:54:401
2719217217,41sleep22811-21latency_hist11:04:302
16182216910,144sleep316253-21sensors11:44:573
27294215826,69sleep127376-21mailstats12:19:561
23724215217,120sleep023744-21latency_hist08:44:530
15735215230,68sleep10-21swapper/111:44:471
21912215133,47sleep10-21swapper/112:04:291
1973421479,122sleep019880-21sed11:55:040
1973421479,122sleep019880-21sed11:55:040
7772214546,42sleep10-21swapper/111:19:471
7772214546,42sleep10-21swapper/111:19:471
598214424,99sleep0740-21grep07:29:590
295521418,17sleep10-21swapper/111:04:411
9984214073,54sleep19985-21/usr/sbin/munin09:44:401
395221407,87sleep14011-21basename09:24:491
14361214016,104sleep214365-21cron09:59:272
5819213518,58sleep10-21swapper/111:14:301
1070221336,35sleep10-21swapper/111:29:331
16432213222,84sleep316582-21unixbench_multi08:20:013
5853213122,86sleep25999-21latency_hist11:14:312
4359213112,34sleep10-21swapper/107:44:301
4359213112,34sleep10-21swapper/107:44:301
20858213024,71sleep120892-21ps08:34:571
9500212911,65sleep10-21swapper/107:59:401
2321421285,30sleep10-21swapper/108:41:111
3249121265,31sleep10-21swapper/109:10:111
1823021255,28sleep10-21swapper/111:51:331
7146212349,51sleep10-21swapper/109:34:501
12180212355,49sleep10-21swapper/109:49:571
32105212141,25sleep10-21swapper/112:34:591
1507521219,75sleep115111-21ntpq09:59:511
18956212019,81sleep318476-21apt-get11:54:383
18956212019,81sleep318476-21apt-get11:54:383
486921198,51sleep14939-21latency07:44:501
25864211834,39sleep10-21swapper/112:14:561
26889211645,31sleep10-21swapper/108:54:441
24819211534,29sleep10-21swapper/110:30:201
1976211413,17sleep00-21swapper/007:34:560
27841211311,80sleep027927-21/usr/sbin/munin10:40:530
14748211343,49sleep10-21swapper/108:14:581
26010211249,42sleep10-21swapper/107:09:531
8100211112,84sleep08108-21awk11:19:540
8100211112,84sleep08108-21awk11:19:540
5519211115,83sleep35562-21basename09:29:483
11336210831,65sleep111412-21latency08:04:491
30815210716,77sleep230851-21expr10:49:482
3385210614,73sleep33416-21memory07:39:513
3385210614,73sleep33416-21memory07:39:513
2975621067,16sleep10-21swapper/110:44:581
23432210514,75sleep023572-21latency_hist12:09:290
17701210515,78sleep217788-21basename11:49:572
31277210410,47sleep10-21swapper/110:49:591
28910210426,15sleep10-21swapper/108:59:571
483210328,36sleep10-21swapper/110:55:001
24923210226,41sleep124953-21munin-run12:14:271
24923210226,41sleep124953-21munin-run12:14:271
2726921019,13sleep00-21swapper/012:19:550
16605210017,65sleep216211-21/usr/sbin/munin10:04:522
533429910,77sleep25376-21grep09:29:432
661429816,59sleep26679-21awk07:49:562
1944629822,48sleep319524-21find08:29:583
13642985,28sleep10-21swapper/110:59:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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