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2026-08-04 - 12:04
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot8.osadl.org (updated Tue Aug 04, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2437358992724,1cyclictest0-21swapper/320:45:013
2437358992521,1cyclictest0-21swapper/322:20:143
2437358992421,1cyclictest0-21swapper/321:45:003
27355862230,1sleep30-21swapper/322:40:163
2437358992320,1cyclictest0-21swapper/323:20:123
24778232220,10sleep12478099-21date19:40:011
2437358992219,1cyclictest0-21swapper/321:50:503
2437358992219,1cyclictest0-21swapper/321:00:163
2437358992219,1cyclictest0-21swapper/300:20:203
2437358992218,1cyclictest0-21swapper/322:25:253
243735899215,8cyclictest2503416-21taskset19:59:553
243735899214,14cyclictest2915110-21taskset00:33:273
2437358992119,1cyclictest0-21swapper/322:35:013
2437358992119,1cyclictest0-21swapper/300:35:263
2437358992119,1cyclictest0-21swapper/300:15:153
2437358992118,1cyclictest0-21swapper/320:20:083
2437358992118,1cyclictest0-21swapper/320:00:213
2437358992118,1cyclictest0-21swapper/319:25:013
2437358992018,1cyclictest0-21swapper/323:00:213
2437358992017,1cyclictest0-21swapper/322:37:223
2437358992017,1cyclictest0-21swapper/322:00:193
2437358992010,7cyclictest24923232sleep319:50:173
256736821915,2sleep21-21systemd20:47:092
243735899195,10cyclictest2664272-21chrt21:55:143
2437358991917,1cyclictest0-21swapper/321:19:273
2437358991916,1cyclictest0-21swapper/323:49:333
2437358991916,1cyclictest0-21swapper/321:49:403
2437358991916,1cyclictest0-21swapper/320:15:283
2437358991916,1cyclictest0-21swapper/319:40:193
2437358991916,1cyclictest0-21swapper/300:00:223
243735899191,14cyclictest2821791-21chrt23:35:133
243735899191,14cyclictest2812007-21taskset23:25:423
243735899191,14cyclictest2774458-21taskset23:05:013
243735899191,14cyclictest2616627-21taskset21:24:103
243735899191,14cyclictest2553435-21taskset20:35:183
243735899191,14cyclictest2471723-21chrt19:35:143
243735899191,13cyclictest2879561-21taskset00:10:163
2437358991816,1cyclictest0-21swapper/321:30:023
2437358991816,1cyclictest0-21swapper/320:47:433
2437358991816,1cyclictest0-21swapper/320:07:553
2437358991816,1cyclictest0-21swapper/319:25:463
2437358991815,1cyclictest0-21swapper/323:50:183
2437358991815,1cyclictest0-21swapper/323:40:233
2437358991815,1cyclictest0-21swapper/323:15:153
2437358991815,1cyclictest0-21swapper/323:10:223
2437358991815,1cyclictest0-21swapper/322:06:173
2437358991815,1cyclictest0-21swapper/319:31:253
243735899181,13cyclictest2854186-21taskset23:55:183
243735899181,13cyclictest2765661-21taskset22:58:163
243735899181,13cyclictest2750937-21chrt22:50:153
243735899181,13cyclictest2638807-21taskset21:35:373
243735899181,13cyclictest2598916-21taskset21:10:233
243735899181,13cyclictest2593025-21taskset21:07:063
243735899181,13cyclictest2580170-21taskset20:57:313
243735899181,13cyclictest2573751-21taskset20:51:513
2437358991715,1cyclictest0-21swapper/322:47:123
2437358991715,1cyclictest0-21swapper/320:34:173
2437358991714,1cyclictest0-21swapper/322:10:403
2437358991714,1cyclictest0-21swapper/319:48:513
2437358991714,1cyclictest0-21swapper/300:05:283
243735899171,13cyclictest2821068-21taskset23:34:013
243735899171,12cyclictest2631746-21taskset21:32:533
243735899171,12cyclictest2522328-21taskset20:10:293
243735899171,12cyclictest2437520-21taskset19:10:043
2437358991613,1cyclictest0-21swapper/320:25:223
243735899161,12cyclictest2906355-21taskset00:25:493
243735899161,12cyclictest2702467-21taskset22:17:433
243735899161,12cyclictest2446061-21taskset19:15:093
24369542160,2sleep30-21swapper/319:06:353
28866822150,1sleep00-21swapper/000:15:190
27652372150,8sleep22765243-21ssh22:57:112
26715182150,2sleep00-21swapper/021:59:240
29058672140,10sleep02905975-21/usr/sbin/munin00:25:260
28296022141,9sleep22829331-21sendmail-msp23:40:092
27604652140,2sleep00-21swapper/022:55:180
26462512141,10sleep12646380-21sed21:40:281
29078692131,9sleep12907981-21date00:30:001
28829502130,1sleep20-21swapper/200:11:172
28190902130,10sleep02819142-21ntpq23:30:210
27877052131,9sleep22787742-21ntpq23:10:232
27574462131,4sleep22757452-21ssh22:52:192
26024332130,10sleep12603337-21cut21:15:191
25231582131,9sleep02523355-21smartctl20:15:160
24700482130,10sleep12470380-21grep19:30:191
29216202120,9sleep12916012-21/usr/sbin/munin00:35:251
28169402126,4sleep22818741-21kthreadcore23:30:192
27578252120,1sleep10-21swapper/122:53:221
27483142121,8sleep22748358-21ntpq22:45:252
27416412121,8sleep02741647-21ssh22:41:590
25933222121,2sleep10-21swapper/121:10:011
25866572120,1sleep00-21swapper/021:02:470
25629952121,8sleep02564692-21cut20:45:200
25426512128,2sleep02542784-21irqcore20:30:160
24833072121,6sleep0872-21in:imuxsock19:40:250
27108692110,8sleep22710874-21sh22:24:042
26725502110,8sleep12672976-21sed22:00:181
26260202111,7sleep02626876-21kthreadcore21:30:170
25612032116,3sleep0151ktimers/020:44:430
25349152110,8sleep02535039-21cat20:20:300
25037062113,5sleep12503484-21sendmail-msp20:00:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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