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2026-09-24 - 06:36
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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 highest latencies:
System rackeslot8.osadl.org (updated Thu Sep 24, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27684702520,1sleep30-21swapper/323:00:213
2434939992825,1cyclictest0-21swapper/323:20:153
2434939992825,1cyclictest0-21swapper/322:20:003
2434939992824,1cyclictest0-21swapper/320:40:263
27963942250,3sleep22761511-21kworker/u16:1+ext4-rsv-conversion23:20:162
2434939992522,1cyclictest0-21swapper/323:30:263
2434939992320,1cyclictest0-21swapper/319:40:233
2434939992219,1cyclictest0-21swapper/322:10:203
2434939992219,1cyclictest0-21swapper/320:20:183
2434939992219,1cyclictest0-21swapper/320:00:223
2434939992118,1cyclictest0-21swapper/322:55:123
27317152201,10sleep22731956-21cat22:40:012
2434939992017,1cyclictest0-21swapper/321:45:193
243493999201,15cyclictest2832129-21taskset23:40:423
2434939992010,5cyclictest2778776-21turbostat23:10:003
2434939991916,1cyclictest0-21swapper/323:45:183
2434939991916,1cyclictest0-21swapper/322:40:003
2434939991916,1cyclictest0-21swapper/321:00:203
2434939991916,1cyclictest0-21swapper/321:00:203
243493999191,14cyclictest2897082-21taskset00:25:163
243493999191,14cyclictest2613077-21taskset21:21:113
243493999191,14cyclictest2590990-21turbostat21:10:003
243493999182,13cyclictest2918757-21taskset00:36:543
2434939991815,1cyclictest0-21swapper/321:40:203
2434939991815,1cyclictest0-21swapper/321:10:283
2434939991815,1cyclictest0-21swapper/300:21:393
2434939991815,1cyclictest0-21swapper/300:00:003
243493999181,14cyclictest2669380-21taskset22:00:123
243493999181,14cyclictest2604447-21taskset21:15:263
243493999181,13cyclictest2909756-21taskset00:30:213
243493999181,13cyclictest2865024-21taskset00:04:543
243493999181,13cyclictest2793348-21taskset23:17:013
243493999181,13cyclictest2755215-21taskset22:54:563
243493999181,13cyclictest2740128-21taskset22:45:143
243493999181,13cyclictest2475425-21turbostat19:40:013
243493999172,12cyclictest2785105-21taskset23:10:473
2434939991714,1cyclictest0-21swapper/300:05:173
243493999171,13cyclictest2879806-21taskset00:12:373
243493999171,13cyclictest2825777-21taskset23:39:503
243493999171,13cyclictest2738395-21taskset22:41:363
243493999171,13cyclictest2716536-21taskset22:30:143
243493999171,13cyclictest2715823-21taskset22:29:303
243493999171,13cyclictest2552132-21taskset20:35:343
243493999171,12cyclictest2571405-21taskset20:50:293
243493999171,12cyclictest2564455-21chrt20:45:203
243493999171,12cyclictest2488305-21turbostat19:50:013
243493999171,11cyclictest2456591-21chrt19:25:123
243493999170,12cyclictest2494938-21taskset19:55:023
28438472160,14sleep12845645-21tr23:50:191
2434939991614,1cyclictest0-21swapper/322:20:183
2434939991613,1cyclictest0-21swapper/321:35:173
2434939991613,1cyclictest0-21swapper/320:55:253
2434939991613,1cyclictest0-21swapper/320:30:163
2434939991613,1cyclictest0-21swapper/319:15:133
243493999161,12cyclictest2809075-21taskset23:26:593
243493999161,12cyclictest2661487-21taskset21:55:033
243493999161,12cyclictest2653734-21taskset21:50:103
243493999161,12cyclictest2628558-21taskset21:31:013
243493999161,12cyclictest2620550-21taskset21:25:283
243493999161,12cyclictest2534019-21taskset20:25:163
243493999161,12cyclictest2520623-21taskset20:15:023
243493999161,12cyclictest2520169-21taskset20:12:533
243493999161,12cyclictest2513955-21taskset20:09:573
243493999161,12cyclictest2494374-21taskset19:51:053
243493999161,12cyclictest2468555-21taskset19:30:293
243493999161,12cyclictest2450079-21taskset19:20:023
243493999161,12cyclictest2440969-21taskset19:10:293
27060372152,10sleep12706073-21ntpq22:20:231
2434939991512,1cyclictest0-21swapper/322:05:183
243493999151,12cyclictest2847630-21taskset23:50:283
243493999151,11cyclictest2886921-21taskset00:15:383
24626602141,5sleep22462686-21munin-run19:30:012
26250312132,8sleep02626840-21tr21:30:230
25364252131,9sleep12538355-21cut20:25:191
26063572121,4sleep02606363-21ssh21:19:250
25014512120,4sleep22501413-21/usr/sbin/munin20:00:152
29197762110,7sleep12919782-21ssh00:39:461
28335612111,7sleep02833567-21sshd-auth23:44:410
27774772111,7sleep02777479-21ssh23:06:240
27705592110,8sleep02770565-21ssh23:03:520
26380982110,1sleep1171rcu_preempt21:40:061
26320692111,7sleep22633768-21kthreadcore21:35:182
25280712110,8sleep12528916-21cut20:20:181
24774082110,8sleep02478875-21cut19:40:210
28942102100,7sleep1872-21in:imuxsock00:20:261
28792702100,6sleep02590987-21diskmemload00:11:070
28026862101,6sleep02802849-21diskstats23:25:120
27611432100,7sleep02761409-21ssh22:55:290
27380782101,7sleep22699923-21kworker/u16:1+ext4-rsv-conversion22:40:412
27294742101,6sleep02729519-21/usr/sbin/munin22:35:220
26693882101,5sleep02669425-21apt-get22:00:140
26670702100,7sleep02667268-21timerwakeupswit21:55:250
26440812102,6sleep03594167-21systemd-journal21:40:300
26004792103,5sleep12601952-21grep21:15:211
25528012100,7sleep02552851-21awk20:40:130
25417442100,7sleep22543543-21kthreadcore20:30:212
25387272101,6sleep02538770-21ld20:25:220
24505832101,5sleep12451495-21irqstats19:20:181
24358502100,7sleep22436748-21kthreadcore19:10:172
243493999107,1cyclictest0-21swapper/319:10:013
2865367291,4sleep02865399-21apt-get00:05:130
2763724291,5sleep22763110-21sendmail-msp23:00:172
2690354290,6sleep12690401-21ntp_states22:10:291
2677676291,5sleep12677990-21cut22:05:161
2661530291,4sleep22661567-21apt-get21:55:112
2622531292,3sleep22622524-21apt-get21:30:172
2604399291,5sleep22604445-21ntpq21:15:262
2598665290,2sleep12598671-21ssh21:14:451
2590174291,5sleep12590289-21python321:05:271
2559249291,4sleep12559282-21apt-get20:45:111
2520674291,4sleep22520671-21apt-get20:15:142
2506914291,5sleep12507161-21grep20:00:301
2487394291,5sleep02487435-21ntpq19:45:260
2482185291,4sleep12482218-21apt-get19:45:151
2475203290,1sleep10-21swapper/119:37:331
2435123291,4sleep12435156-21apt-get19:10:111
2918644280,2sleep22918650-21ssh00:36:382
2909802281,4sleep02909855-21ntp_states00:30:230
2895315280,2sleep20-21swapper/200:22:152
2886244281,4sleep22886287-21ntpq00:15:212
2881391281,4sleep02881719-21irqcore00:15:140
2857666283,2sleep20-21swapper/200:00:142
2857456280,5sleep1249-21jbd2/sda2-800:00:091
2847095281,4sleep22847124-21ssh23:50:242
2839567281,4sleep12839817-21users23:45:261
2825190280,5sleep02590987-21diskmemload23:38:110
2810464282,2sleep22810496-21apt-get23:30:122
2795230281,4sleep02794476-21sendmail-msp23:20:150
2763605280,6sleep12763401-21/usr/sbin/munin23:00:161
2737333280,2sleep0171rcu_preempt22:40:230
2713732284,2sleep20-21swapper/222:25:212
2699180281,4sleep02699186-21ssh22:16:500
2698064281,4sleep22698114-21ntpq22:15:232
2693270281,4sleep12693389-21irqcore22:15:181
2638128281,2sleep20-21swapper/221:40:112
2598452280,5sleep02598458-21ssh21:14:120
2593303280,5sleep22595121-21grep21:10:212
2584947281,4sleep22585060-21diskstats21:05:162
2570848281,3sleep12570892-21ntpq20:50:241
2558024281,4sleep12558063-21ntpq20:40:221
2551538281,4sleep02551576-21ntpq20:35:200
2525841281,4sleep02525884-21ntpq20:15:240
2519369281,4sleep22519408-21ntpq20:10:212
2501402280,5sleep02501186-21sendmail-msp20:00:050
2490009281,4sleep02491760-21cut19:50:190
2450113281,3sleep02450126-21apt-get19:20:130
2449801280,5sleep02449833-21munin-run19:20:000
2428702281,3sleep22428735-21apt-get19:05:122
2918630270,4sleep02918638-21ssh00:36:360
2886192270,3sleep12886242-21ntpq00:15:201
2877000270,4sleep22878263-21ssh00:10:162
2871808270,5sleep22755298-21kworker/2:2+mm_percpu_wq00:07:002
2859961270,4sleep02861494-21grep00:00:200
2849614270,4sleep12849654-21ssh23:55:121
2835384273,2sleep02836524-21kthreadcore23:45:170
2827144270,4sleep12827730-21ssh23:40:211
2825460270,5sleep22825466-21ssh23:39:012
2795947270,4sleep1249-21jbd2/sda2-823:20:161
2794348270,1sleep20-21swapper/223:19:452
2771312271,2sleep10-21swapper/123:05:131
2724381270,4sleep12724498-21tune2fs22:35:151
2716325271,2sleep00-21swapper/022:30:120
2708511270,3sleep12708517-21ssh22:25:121
2669437271,3sleep22669121-21sendmail-msp22:00:162
2653763271,2sleep02653798-21apt-get21:50:160
2648041270,4sleep02649766-21cut21:45:190
2614704271,3sleep22614741-21apt-get21:25:122
2613934270,1sleep10-21swapper/121:23:431
2583900271,4sleep02578218-21sendmail-msp21:00:250
2583900271,4sleep02578218-21sendmail-msp21:00:250
2575020271,2sleep00-21swapper/020:55:200
2572064271,2sleep20-21swapper/220:55:142
2555497271,3sleep20-21swapper/220:40:192
2551578271,3sleep10-21swapper/120:35:211
2532930270,5sleep22526837-21sendmail-msp20:21:072
2520896271,4sleep10-21swapper/120:15:171
2519453270,4sleep02519493-21ntpq20:10:230
2509241272,2sleep02510661-21kthreadcore20:05:220
2494978271,2sleep12494984-21apt-get19:55:131
2475689271,3sleep12475720-21apt-get19:40:141
2469017271,3sleep12469049-21sh19:35:011
2464606273,2sleep20-21swapper/219:30:212
2461765271,3sleep12434934-21cyclictest19:25:231
2911934260,1sleep20-21swapper/200:34:462
2903883260,1sleep10-21swapper/100:29:161
2903655260,1sleep20-21swapper/200:28:402
2888822262,2sleep00-21swapper/000:20:080
2872722260,1sleep10-21swapper/100:09:351
2856973260,3sleep22856979-21ssh23:59:382
2849831260,3sleep02850032-21hddtemp_smartct23:55:150
2841820260,3sleep02841896-21sort23:50:140
2824754261,2sleep10-21swapper/123:37:041
2816428260,1sleep10-21swapper/123:30:431
2815731263,1sleep00-21swapper/023:30:220
2809877260,4sleep22809884-21sh23:29:112
2808638260,1sleep12808644-21ssh23:25:461
2792914260,4sleep12792920-21ssh23:15:431
2792233260,3sleep02792284-21ntp_states23:15:220
2785248260,1sleep20-21swapper/223:11:152
2785173260,3sleep12785179-21ssh23:10:581
2784516260,3sleep02784629-21systemctl23:10:290
2755594261,2sleep10-21swapper/122:55:111
2750500260,3sleep22752405-21kthreadcore22:50:232
2747858260,3sleep12748016-21df_inode22:50:181
2746261260,3sleep12746265-21ssh22:46:451
2739964261,3sleep22740127-21diskstats22:45:142
2739917262,1sleep00-21swapper/022:45:120
2738205261,3sleep12731778-21sendmail-msp22:41:001
2713831260,3sleep02713872-21ntpq22:25:230
2705990261,2sleep02700374-21sendmail-msp22:20:220
2685129261,2sleep20-21swapper/222:10:182
2682437260,3sleep22682489-21ntpq22:05:212
2669430260,3sleep12669436-21ssh22:00:151
2660749260,3sleep12660757-21sshd-auth21:53:411
2659766261,3sleep22659770-21ssh21:50:502
2653418261,3sleep1703-21mta-sts-daemon21:50:011
2646020260,3sleep20-21swapper/221:45:122
2637142260,1sleep00-21swapper/021:38:130
2630356261,2sleep10-21swapper/121:35:121
2629230260,1sleep12629236-21ssh21:32:571
2612183260,3sleep02612223-21ntpq21:20:250
2606938261,2sleep20-21swapper/221:20:152
2566793260,4sleep02567842-21kthreadcore20:50:190
2545090261,2sleep10-21swapper/120:30:241
2540348261,2sleep00-21swapper/020:30:190
2527100261,2sleep02527096-21apt-get20:20:130
2513900260,1sleep20-21swapper/220:09:172
2510665260,3sleep12512584-21cut20:05:231
2494950262,2sleep02494977-21acpi19:55:120
2494549260,1sleep20-21swapper/219:53:212
2494357260,1sleep10-21swapper/119:50:521
2480574261,3sleep22480853-21sed19:40:232
2462936260,2sleep02462968-21apt-get19:30:150
2443774261,2sleep20-21swapper/219:15:142
2443738260,2sleep10-21swapper/119:15:131
2441208260,1sleep00-21swapper/019:13:350
2433891260,2sleep10-21swapper/119:05:231
2904483250,2sleep10-21swapper/100:30:121
2901853250,2sleep02901905-21ntpq00:25:220
2875256250,2sleep10-21swapper/100:10:151
2833949250,2sleep22833986-21ssh23:45:112
2833338251,2sleep20-21swapper/223:44:072
2772277250,3sleep22773256-21cut23:05:182
2762667250,1sleep20-21swapper/222:58:532
2747851250,2sleep00-21swapper/022:50:170
2722843250,3sleep22722848-21sh22:32:102
2716153250,2sleep12716046-21appstreamcli22:30:011
2700693250,2sleep22700699-21ssh22:20:122
2680582251,2sleep02590987-21diskmemload22:05:190
2664826250,2sleep12666368-21ssh21:55:181
2619918250,2sleep02619957-21ssh21:25:210
2578902250,2sleep2249-21jbd2/sda2-821:00:152
2578902250,2sleep2249-21jbd2/sda2-821:00:142
2578724251,2sleep10-21swapper/121:00:141
2578724251,2sleep10-21swapper/121:00:141
2572028250,2sleep10-21swapper/120:55:121
2559959251,2sleep20-21swapper/220:45:162
2552121250,3sleep22546320-21/usr/sbin/munin20:35:262
2514236250,2sleep10-21swapper/120:10:121
2482221250,2sleep20-21swapper/219:45:162
2472182250,2sleep00-21swapper/019:35:200
2469326250,2sleep20-21swapper/219:35:142
2457960250,2sleep00-21swapper/019:25:180
2450167251,2sleep22450288-21diskstats19:20:152
2430353250,2sleep00-21swapper/019:05:180
2686542240,2sleep00-21swapper/022:10:240
2619962240,1sleep10-21swapper/121:25:231
2584865240,1sleep00-21swapper/021:05:140
2564501240,2sleep02564539-21ntp_states20:45:220
2533526240,1sleep20-21swapper/220:25:042
2500121240,1sleep20-21swapper/219:55:222
2565879230,1sleep20-21swapper/220:50:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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