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2026-08-04 - 09:01
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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 all 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
24399742110,8sleep12441782-21cut19:10:181
29143392106,2sleep10-21swapper/100:31:171
28916932103,4sleep22853182-21kworker/u16:0+xprtiod00:18:512
28127462101,5sleep12812754-21ssh23:27:421
28053372100,7sleep02805342-21sh23:23:520
28049962100,7sleep22805004-21ssh23:22:542
27967332100,7sleep12796739-21ssh23:17:001
27902202101,6sleep2222-21plymouthd23:15:042
27368232101,6sleep1872-21in:imuxsock22:40:191
26831872101,6sleep02685007-21tr22:05:210
26642672102,4sleep22664260-21apt-get21:55:142
26628422101,7sleep01000-21snmpd21:52:070
26558662104,1sleep1171rcu_preempt21:49:231
25293662103,4sleep12528755-21kworker/u16:0+ext4-rsv-conversion20:20:071
25102202101,2sleep20-21swapper/220:05:122
2913446291,5sleep02913499-21ntp_states00:30:240
2897665292,4sleep22897781-21ntpq00:20:242
2890662290,3sleep1222-21plymouthd00:16:021
2884128290,1sleep10-21swapper/100:14:331
2827369290,3sleep12821752-21/usr/sbin/munin23:35:281
2729665290,6sleep12731460-21kthreadcore22:35:171
2722493290,6sleep12724236-21kthreadcore22:30:211
2687159290,2sleep22687165-21ssh22:08:572
2680051291,3sleep12680066-21apt-get22:05:141
2647055290,1sleep20-21swapper/221:41:382
2632528291,5sleep22632557-21turbostat21:35:002
2630954290,2sleep1222-21plymouthd21:30:341
2623840290,4sleep00-21swapper/021:27:330
2617252291,4sleep12617274-21apt-get21:25:141
2549559291,5sleep02550222-21tr20:35:170
2541864291,2sleep00-21swapper/020:28:270
2535355290,2sleep2222-21plymouthd20:21:562
2528078291,5sleep22528118-21ntpq20:15:222
2493545291,6sleep00-21swapper/019:50:190
2457732295,2sleep20-21swapper/219:20:252
2453832290,6sleep02453868-21kthreadcore19:20:190
2446269292,3sleep2222-21plymouthd19:15:172
2431191291,3sleep00-21swapper/019:05:130
2898935284,2sleep02878727-21kworker/0:0+kacpid00:21:580
2884259281,4sleep02884287-21munin-run00:15:000
2862530280,5sleep2249-21jbd2/sda2-800:00:182
2861469281,4sleep02861601-21/usr/sbin/munin00:00:170
2859414280,2sleep22859420-21ssh23:56:222
2831623280,6sleep12832916-21kthreadcore23:40:161
2811500280,5sleep22811622-21switchtime23:25:272
2780949280,2sleep22780955-21ssh23:07:022
2768573281,4sleep22766315-21sendmail-msp23:00:212
2743129280,4sleep1222-21plymouthd22:45:151
2740781280,5sleep22740977-21cat22:40:282
2710055280,1sleep0171rcu_preempt22:21:540
2701181280,5sleep22701291-21python322:15:262
2695741281,4sleep02695774-21apt-get22:15:110
2654692281,1sleep00-21swapper/021:46:100
2638163280,5sleep12638216-21ntp_offset21:35:241
2622420281,5sleep22622472-21ntpq21:25:232
2615932281,4sleep244-21ksoftirqd/221:22:172
2608337280,6sleep02608342-21sh21:18:110
2599577281,4sleep22599583-21ssh21:10:512
2593250280,5sleep02593319-21latency_hist21:10:010
2586828281,4sleep12586907-21munin-run21:05:011
2560944280,3sleep10-21swapper/120:41:241
2548822281,4sleep2222-21plymouthd20:35:142
2516134280,2sleep0222-21plymouthd20:07:540
2503752280,5sleep22503900-21df20:00:152
2502558282,3sleep02502591-21ntpq19:55:230
2491317280,5sleep12490921-21/usr/sbin/munin19:50:161
2471685281,3sleep12471718-21apt-get19:35:131
2437529281,3sleep22437562-21apt-get19:10:112
2436968280,1sleep20-21swapper/219:06:472
2922023271,3sleep2222-21plymouthd00:35:422
2921287271,3sleep02921317-21sh00:35:200
2914136270,4sleep2222-21plymouthd00:30:462
2892955270,4sleep12893691-21cut00:20:191
2876155270,2sleep20-21swapper/200:09:092
2874240271,3sleep10-21swapper/100:05:231
2869502271,3sleep02870425-21irqstats00:05:170
2860054270,1sleep00-21swapper/023:58:090
2851624271,3sleep1222-21plymouthd23:51:351
2847219270,4sleep02848861-21cut23:50:190
2844024270,1sleep20-21swapper/223:47:162
2843510270,4sleep1222-21plymouthd23:45:511
2828846271,3sleep22828852-21ssh23:38:502
2815347270,4sleep12816939-21tr23:30:181
2806064271,3sleep02806101-21apt-get23:25:130
2801680271,4sleep186188-21systemd-journal23:20:201
2796298270,1sleep00-21swapper/023:15:470
2783818271,2sleep10-21swapper/123:10:181
2782887270,4sleep02783817-21irqstats23:10:160
2771826271,3sleep10-21swapper/123:00:241
2756164271,3sleep02756212-21ntpq22:50:250
2743087271,3sleep02743124-21apt-get22:45:140
2731463270,4sleep22732394-21memory22:35:182
2728682274,1sleep00-21swapper/022:35:160
2725739270,1sleep2222-21plymouthd22:31:462
2679608270,2sleep00-21swapper/022:04:500
2679282271,3sleep2222-21plymouthd22:03:552
2656391270,3sleep22656432-21ssh21:50:122
2648645270,3sleep22648642-21apt-get21:45:152
2609367271,3sleep02609038-21sendmail-msp21:20:150
2601406270,2sleep20-21swapper/221:15:042
2587122271,3sleep12586850-21apt-get21:05:051
2580054270,2sleep20-21swapper/220:56:032
2575671270,4sleep12576737-21grep20:55:191
2573760271,4sleep21000-21snmpd20:51:592
2548248270,1sleep10-21swapper/120:33:421
2541778270,1sleep20-21swapper/220:27:212
2522639270,1sleep10-21swapper/120:14:301
2516085271,3sleep1222-21plymouthd20:07:151
2506518271,4sleep02508028-21cut20:00:210
2502673270,4sleep22502790-21sed19:55:262
2497742270,4sleep12498593-21sed19:55:171
2489749270,4sleep02489789-21ntpq19:45:370
2484581271,3sleep22484613-21apt-get19:45:282
2484281270,1sleep20-21swapper/219:44:552
2477758270,1sleep20-21swapper/219:39:112
2464978270,1sleep10-21swapper/119:29:071
2464721270,1sleep00-21swapper/019:25:500
2451200270,4sleep12451243-21ntpq19:15:241
2436250271,3sleep12436293-21ld19:05:221
2900402260,3sleep20-21swapper/200:25:132
2866772260,4sleep10-21swapper/100:00:291
2853473261,2sleep10-21swapper/123:55:171
2845367261,2sleep20-21swapper/223:50:122
2836237261,2sleep00-21swapper/023:42:280
2781554260,3sleep0222-21plymouthd23:08:410
2767089260,3sleep02767868-21cut23:00:180
2758722260,3sleep12758728-21ssh22:55:061
2725496260,4sleep00-21swapper/022:31:080
2718492260,1sleep20-21swapper/222:28:292
2718385260,3sleep12718391-21ssh22:28:111
2712003260,3sleep02712251-21cut22:25:180
2703548260,3sleep1222-21plymouthd22:20:031
2695777260,2sleep10-21swapper/122:15:121
2693952260,3sleep0222-21plymouthd22:10:550
2692356261,2sleep1222-21plymouthd22:10:201
2687949261,2sleep20-21swapper/222:10:132
2670399261,2sleep10-21swapper/121:56:131
2658485260,3sleep12660138-21kthreadcore21:50:191
2646991261,2sleep02646997-21sh21:41:290
2638902260,3sleep2222-21plymouthd21:36:012
2638824261,2sleep00-21swapper/021:35:430
2609528262,2sleep10-21swapper/121:20:161
2592933260,3sleep2222-21plymouthd21:06:022
2580122260,3sleep0222-21plymouthd20:56:580
2573681260,1sleep00-21swapper/020:50:560
2560335260,3sleep22560377-21ntpq20:40:242
2548206260,1sleep20-21swapper/220:33:112
2528829260,1sleep10-21swapper/120:17:091
2516977261,2sleep02517525-21irqrtprio20:10:160
2491392260,4sleep22492322-21irqstats19:50:162
2477586260,3sleep0222-21plymouthd19:37:000
2471330260,3sleep2222-21plymouthd19:33:562
2470510260,3sleep02470552-21ntpq19:30:230
2464775260,4sleep20-21swapper/219:26:322
2443359260,2sleep0222-21plymouthd19:10:570
2837490250,2sleep0222-21plymouthd23:45:100
2823189251,2sleep00-21swapper/023:35:190
2774558250,2sleep10-21swapper/123:05:131
2599648250,2sleep0222-21plymouthd21:11:000
2580686250,3sleep22580650-21/usr/sbin/munin21:00:132
2573630250,2sleep1222-21plymouthd20:50:301
2567420250,2sleep1222-21plymouthd20:47:481
2554395250,2sleep1222-21plymouthd20:35:371
2541677250,2sleep1222-21plymouthd20:26:031
2518483251,2sleep20-21swapper/220:10:182
2490456250,2sleep1222-21plymouthd19:47:271
2452626251,2sleep10-21swapper/119:20:161
2444188250,2sleep00-21swapper/019:15:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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