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2026-08-19 - 21:41
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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 792 highest latencies:
System rackeslot8.osadl.org (updated Wed Aug 19, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2813358992522,1cyclictest0-21swapper/309:40:133
316386422418,3sleep1874-21rs:main1
2813358992421,1cyclictest0-21swapper/312:15:243
2813358992421,1cyclictest0-21swapper/312:15:243
2813358992420,1cyclictest0-21swapper/307:55:013
2813358992320,1cyclictest0-21swapper/307:40:013
2813358992219,1cyclictest0-21swapper/312:20:273
2813358992219,1cyclictest0-21swapper/311:20:003
2813358992219,1cyclictest0-21swapper/310:40:233
2813358992219,1cyclictest0-21swapper/309:55:173
2813358992219,1cyclictest0-21swapper/309:20:063
2813358992219,1cyclictest0-21swapper/308:25:223
281335899212,14cyclictest3189171-21taskset11:59:433
2813358992119,1cyclictest0-21swapper/307:40:223
2813358992118,1cyclictest0-21swapper/311:20:213
2813358992118,1cyclictest0-21swapper/310:10:243
2813358992118,1cyclictest0-21swapper/308:32:473
2813358992118,1cyclictest0-21swapper/307:20:143
2813358992117,1cyclictest0-21swapper/310:35:133
2813358992117,1cyclictest0-21swapper/310:15:253
2813358992018,1cyclictest0-21swapper/311:38:503
2813358992018,1cyclictest0-21swapper/309:15:013
2813358992018,1cyclictest0-21swapper/308:55:043
2813358992017,1cyclictest0-21swapper/312:40:003
2813358992017,1cyclictest0-21swapper/312:15:003
2813358992017,1cyclictest0-21swapper/311:45:153
2813358992017,1cyclictest0-21swapper/309:36:513
2813358992017,1cyclictest0-21swapper/309:05:203
2813358992017,1cyclictest0-21swapper/308:00:233
281335899201,15cyclictest3073134-21taskset10:28:593
281335899201,15cyclictest2861290-21taskset07:45:173
281335899199,7cyclictest29306482sleep308:37:103
2813358991917,1cyclictest0-21swapper/310:25:003
2813358991917,0cyclictest0-21swapper/311:10:193
2813358991916,1cyclictest0-21swapper/310:52:323
2813358991916,1cyclictest0-21swapper/309:53:203
2813358991916,1cyclictest0-21swapper/309:30:253
2813358991916,1cyclictest0-21swapper/308:15:253
281335899191,14cyclictest3078765-21taskset10:30:233
281335899191,14cyclictest2983111-21taskset09:16:343
281335899191,14cyclictest2892122-21taskset08:05:543
281335899191,13cyclictest3092859-21chrt10:45:143
30959542180,1sleep10-21swapper/110:45:191
2813358991816,1cyclictest0-21swapper/307:28:133
2813358991816,0cyclictest0-21swapper/308:50:173
2813358991815,1cyclictest0-21swapper/312:00:403
2813358991815,1cyclictest0-21swapper/310:55:283
2813358991815,1cyclictest0-21swapper/310:00:183
2813358991815,1cyclictest0-21swapper/308:50:013
281335899181,14cyclictest2962934-21taskset09:03:233
281335899181,13cyclictest3221580-21taskset12:25:093
281335899181,13cyclictest3221580-21taskset12:25:083
281335899181,13cyclictest3124255-21taskset11:05:583
281335899181,13cyclictest2905463-21taskset08:20:093
28556292171,12sleep12857008-21cut07:40:191
2813358991715,1cyclictest0-21swapper/311:00:163
2813358991715,1cyclictest0-21swapper/307:35:013
2813358991714,1cyclictest0-21swapper/311:40:153
2813358991714,1cyclictest0-21swapper/310:05:153
2813358991714,1cyclictest0-21swapper/308:40:553
2813358991714,1cyclictest0-21swapper/307:10:183
281335899171,13cyclictest3021889-21taskset09:49:263
281335899171,12cyclictest3195984-21taskset12:05:093
281335899171,12cyclictest3176981-21taskset11:50:123
281335899171,12cyclictest2873420-21taskset07:55:033
281335899171,12cyclictest2822043-21taskset07:15:113
6881160,7low-memory-moni88-21kswapd011:38:251
2813358991613,1cyclictest0-21swapper/309:25:173
2813358991613,1cyclictest0-21swapper/308:10:083
281335899161,12cyclictest3233940-21taskset12:33:113
281335899161,12cyclictest3151413-21taskset11:30:173
32203972151,5sleep13214931-21sendmail-msp12:20:261
29712382150,11sleep02972700-21grep09:10:190
281335899151,11cyclictest3149874-21taskset11:26:043
31522602141,9sleep03153973-21kthreadcore11:30:180
31381022141,10sleep03137411-21sendmail-msp11:20:150
28798532141,10sleep22879625-21sendmail-msp08:00:132
28132052140,2sleep30-21swapper/307:09:473
30670422130,2sleep2421rcuc/210:25:012
30165712131,5sleep10-21swapper/109:45:201
30082252130,10sleep13002941-21/usr/sbin/munin09:35:251
30020232130,10sleep03002293-21awk09:30:270
29244842130,6sleep22924731-21latency_hist08:35:002
28596422131,9sleep22854193-21/usr/sbin/munin07:40:282
7861120,7gdbus3162928-21sshd-auth11:38:250
31428222121,7sleep13142868-21ntpq11:20:201
31373502121,7sleep13137575-21cut11:20:011
31018632120,2sleep10-21swapper/110:50:181
29890312120,8sleep12989066-21proc_pri09:20:261
28353722120,9sleep12835571-21cut07:25:151
31926662111,7sleep13189256-21sendmail-msp12:00:221
30729072111,1sleep10-21swapper/110:26:051
30350082110,8sleep13034791-21sendmail-msp10:00:021
29753002110,8sleep12975501-21ssh09:10:281
29627282111,8sleep22956631-21sendmail-msp09:00:472
29252112110,8sleep22925933-21irqrtprio08:35:172
28539042110,1sleep20-21swapper/207:39:592
32403172100,2sleep2222-21plymouthd12:37:442
32151972101,5sleep23214931-21sendmail-msp12:20:152
32028192105,2sleep10-21swapper/112:10:171
31954082100,3sleep2222-21plymouthd12:01:042
31831172101,2sleep10-21swapper/111:55:131
31312312101,6sleep23131263-21apt-get11:15:132
31184652102,4sleep03118461-21apt-get11:05:130
31056242102,4sleep03105626-21apt-get10:55:150
31036302101,6sleep20-21swapper/210:50:192
30798952101,5sleep23079928-21apt-get10:35:122
30626762101,6sleep13064126-21kthreadcore10:20:201
30473262100,2sleep1222-21plymouthd10:06:251
29308722101,6sleep12930933-21sendmail-msp08:40:011
29113212101,6sleep02905237-21sendmail-msp08:20:440
28530282100,8sleep02853063-21open_files07:35:250
28528422102,2sleep1171rcu_preempt07:35:211
28130842100,1sleep10-21swapper/107:08:121
3239546291,5sleep13239587-21ntpq12:35:221
3233201291,5sleep03233240-21ntp_states12:30:240
3176487291,5sleep13176538-21911:50:001
3150855291,5sleep23151406-21ps11:30:162
3130839290,1sleep20-21swapper/211:13:372
3014451290,6sleep00-21swapper/009:40:210
2983045290,2sleep0222-21plymouthd09:15:440
2963733291,4sleep02964181-21irqcore09:05:170
2931155294,3sleep0151ktimers/008:40:080
2924399292,4sleep0222-21plymouthd08:33:550
2918087290,2sleep1222-21plymouthd08:29:551
2917197291,5sleep02917239-21ntpq08:25:250
2910789294,2sleep20-21swapper/208:20:252
2908540291,5sleep12905237-21sendmail-msp08:20:191
2892427290,1sleep20-21swapper/208:09:512
2859223290,6sleep02859363-21ntpq07:40:220
2847194290,2sleep1222-21plymouthd07:31:411
2830459290,6sleep22831589-21kthreadcore07:20:202
2828037290,1sleep20-21swapper/207:18:402
2819711291,5sleep12820169-21ntpq07:15:021
2812299291,4sleep02812340-21ntpq07:05:220
2807156291,3sleep20-21swapper/207:05:132
3222021281,4sleep23222729-21sed12:25:172
3222021281,4sleep23222729-21sed12:25:162
3216597280,5sleep03217942-21kthreadcore12:20:220
3208753280,4sleep13208786-21apt-get12:15:141
3208753280,4sleep13208786-21apt-get12:15:131
3195987281,3sleep13196020-21apt-get12:05:121
3176783281,3sleep03176786-21apt-get11:50:110
3176367281,3sleep2222-21plymouthd11:48:292
3174451281,4sleep03175383-21memory11:45:180
3162877280,5sleep23162874-21apt-get11:38:222
3121161281,4sleep23122968-21grep11:05:182
3098253281,3sleep03098392-21/usr/sbin/munin10:45:280
3086733281,4sleep23086097-21sendmail-msp10:40:172
3073519281,3sleep0222-21plymouthd10:30:130
3067127281,4sleep03067130-21apt-get10:25:110
3059803281,4sleep03060020-21/usr/sbin/munin10:15:300
3033845281,4sleep03033872-21ntp_states09:55:250
3028655281,3sleep13028657-21apt-get09:55:141
3023154281,4sleep03023812-21kthreadcore09:50:150
3009565281,4sleep23009688-21expr09:40:162
3008777280,4sleep0222-21plymouthd09:36:090
2996586281,4sleep2222-21plymouthd09:30:132
2962737283,3sleep1331ktimers/109:00:541
2938942281,4sleep12939895-21cut08:45:181
2920888284,2sleep10-21swapper/108:30:181
2874832281,4sleep02875950-21tr07:55:180
2873431280,4sleep22873464-21apt-get07:55:122
2841390281,3sleep02841393-21apt-get07:30:120
2828969281,4sleep02829673-21sed07:20:180
2828549281,4sleep12828282-21sendmail-msp07:20:151
2818763281,4sleep02818805-21ntpq07:10:240
3239505271,3sleep03239544-21ntpq12:35:210
3221813271,3sleep10-21swapper/112:25:161
3221813271,3sleep10-21swapper/112:25:161
3203382271,4sleep23204205-21cat12:10:182
3189715270,4sleep03189889-21sed12:00:170
3188984270,1sleep20-21swapper/211:57:232
3182511270,4sleep1222-21plymouthd11:50:441
3163863270,4sleep03163642-21sendmail-msp11:40:090
3150110270,1sleep00-21swapper/011:29:060
3149974270,1sleep10-21swapper/111:27:231
3130143271,4sleep03130265-21python311:10:250
3118055271,3sleep0222-21plymouthd11:03:400
3110879270,4sleep13111001-21python310:55:281
3092849271,2sleep20-21swapper/210:45:132
3091752271,3sleep03086097-21sendmail-msp10:40:270
3089037272,3sleep1321rcuc/110:40:201
3079933270,1sleep00-21swapper/010:35:130
3072990271,3sleep2222-21plymouthd10:27:102
3060659271,3sleep086188-21systemd-journal10:20:030
3040890270,4sleep0249-21jbd2/sda2-810:00:460
3034479270,3sleep2222-21plymouthd09:56:472
3009409270,4sleep13009564-21diskstats09:40:151
2996086271,3sleep1222-21plymouthd09:27:321
2976977271,3sleep2222-21plymouthd09:14:502
2952866271,4sleep02954705-21tr08:55:180
2950404271,2sleep20-21swapper/208:55:052
2943992271,3sleep22944025-21apt-get08:50:122
2937318270,4sleep1222-21plymouthd08:44:261
2917863270,4sleep2222-21plymouthd08:27:032
2904901270,1sleep10-21swapper/108:16:321
2898456270,1sleep20-21swapper/208:10:352
2897874270,4sleep1222-21plymouthd08:10:211
2886358271,2sleep10-21swapper/108:05:131
2885866271,3sleep1222-21plymouthd08:02:361
2885766271,3sleep0222-21plymouthd08:01:180
2879352273,3sleep1331ktimers/107:57:191
2872134271,4sleep02872180-21ntpq07:50:210
2869834270,4sleep22871711-21cut07:50:192
2843062271,3sleep20-21swapper/207:30:182
2828112271,3sleep02828133-21apt-get07:19:370
3233864260,1sleep10-21swapper/112:32:141
3228963261,3sleep23229968-21kthreadcore12:30:182
3211180260,3sleep03212992-21cut12:15:210
3211180260,3sleep03212992-21cut12:15:200
3208739260,2sleep2222-21plymouthd12:15:032
3208739260,2sleep2222-21plymouthd12:15:022
3202012260,3sleep0222-21plymouthd12:09:100
3196023260,2sleep2222-21plymouthd12:05:132
3182512260,3sleep2222-21plymouthd11:50:442
3169957260,3sleep2222-21plymouthd11:43:352
3156347260,4sleep10-21swapper/111:32:271
3150079260,3sleep2222-21plymouthd11:28:442
3137635261,2sleep2222-21plymouthd11:20:102
3132635260,3sleep03133939-21kthreadcore11:15:190
3126633261,2sleep10-21swapper/111:10:191
3124382260,3sleep1222-21plymouthd11:07:381
3112013261,2sleep20-21swapper/211:00:142
3111969260,3sleep13111752-21sendmail-msp11:00:051
3107092261,2sleep20-21swapper/210:55:202
3105029260,3sleep0222-21plymouthd10:51:180
3079058260,4sleep20-21swapper/210:30:272
3060342260,3sleep2222-21plymouthd10:19:282
3054665260,4sleep13054939-21cut10:15:191
3053801260,3sleep2222-21plymouthd10:12:342
3052918261,3sleep13053039-21ntpq10:10:211
3047875260,2sleep00-21swapper/010:10:120
3043825260,3sleep03045619-21cut10:05:190
3041528261,2sleep20-21swapper/210:05:132
3036436262,2sleep20-21swapper/210:00:192
3028309261,2sleep2222-21plymouthd09:54:552
3027381260,2sleep10-21swapper/109:50:201
3016250260,4sleep03016570-21cut09:45:190
3008263261,2sleep20-21swapper/209:35:262
2992865260,4sleep22994714-21grep09:25:192
2989068261,3sleep2872-21in:imuxsock09:20:272
2983119260,1sleep10-21swapper/109:16:401
2983032261,2sleep20-21swapper/209:15:332
2969397260,2sleep2222-21plymouthd09:09:252
2969122261,2sleep1222-21plymouthd09:05:501
2957260261,2sleep00-21swapper/009:00:170
2956272260,3sleep1222-21plymouthd08:56:131
2949775260,1sleep00-21swapper/008:50:420
2949196261,2sleep12949241-21grep08:50:231
2943446260,3sleep0222-21plymouthd08:46:250
2939896261,2sleep20-21swapper/208:45:192
2926703261,2sleep00-21swapper/008:35:190
2899277261,2sleep20-21swapper/208:15:162
2892415260,2sleep0222-21plymouthd08:09:410
2872842260,2sleep1222-21plymouthd07:51:221
2866412260,3sleep2222-21plymouthd07:46:092
2865814261,2sleep10-21swapper/107:45:251
2862012261,2sleep00-21swapper/007:45:200
2840199261,2sleep00-21swapper/007:25:220
2840099260,3sleep2222-21plymouthd07:25:212
2819309260,1sleep20-21swapper/207:10:342
2818486260,4sleep12818658-21strings07:10:211
3223781250,3sleep03225517-21grep12:25:190
3223781250,3sleep03225517-21grep12:25:190
3202358250,2sleep0222-21plymouthd12:10:080
3188301250,3sleep03188345-21ntpq11:55:240
3085768250,3sleep10-21swapper/110:36:341
3074888250,2sleep10-21swapper/110:30:181
3017291250,2sleep2421rcuc/209:45:212
3000551250,2sleep13001565-21memory09:30:201
2990169250,2sleep0222-21plymouthd09:25:100
2989587250,2sleep0222-21plymouthd09:21:210
2937020250,2sleep2222-21plymouthd08:40:372
2899072251,1sleep00-21swapper/008:15:060
2893662250,3sleep02894513-21grep08:10:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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