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2026-07-21 - 13:42
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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 Tue Jul 21, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29043872950,1sleep0251irq_work/021:35:000
2708886992825,1cyclictest0-21swapper/321:45:123
2708886992825,1cyclictest0-21swapper/300:15:003
2708886992623,1cyclictest0-21swapper/323:50:183
2708886992522,1cyclictest0-21swapper/322:00:073
2708886992421,1cyclictest0-21swapper/300:20:013
2708886992320,1cyclictest0-21swapper/323:20:193
2708886992320,1cyclictest0-21swapper/322:30:153
2708886992320,1cyclictest0-21swapper/320:20:013
288106822217,3sleep1872-21in:imuxsock21:20:101
270888699229,1cyclictest0-21swapper/323:15:243
2708886992219,1cyclictest0-21swapper/322:40:083
2708886992218,1cyclictest0-21swapper/320:20:233
2708886992218,1cyclictest0-21swapper/320:20:233
2708886992210,1cyclictest0-21swapper/323:30:073
270888699218,1cyclictest0-21swapper/321:11:133
270888699212,15cyclictest3146593-21taskset00:06:023
2708886992118,1cyclictest0-21swapper/323:40:023
2708886992118,1cyclictest0-21swapper/323:40:023
2708886992118,1cyclictest0-21swapper/322:50:223
2708886992111,8cyclictest0-21swapper/321:01:063
270888699211,14cyclictest2998743-21chrt22:35:133
2708886992111,0cyclictest0-21swapper/319:28:313
270888699209,1cyclictest0-21swapper/323:00:203
270888699202,14cyclictest3100471-21taskset23:39:163
2708886992017,1cyclictest0-21swapper/321:55:173
270888699201,6cyclictest30775552sleep323:25:133
270888699201,15cyclictest3116270-21taskset23:49:183
270888699201,15cyclictest3059846-21taskset23:10:453
270888699201,15cyclictest2967064-21taskset22:15:003
270888699201,14cyclictest2896862-21chrt21:30:143
270888699201,14cyclictest2820109-21turbostat20:35:003
270888699201,14cyclictest2722801-21taskset19:15:233
2708886992011,1cyclictest0-21swapper/320:14:003
2708886992010,1cyclictest0-21swapper/323:08:193
2708886992010,1cyclictest0-21swapper/322:27:563
2708886992010,1cyclictest0-21swapper/321:40:053
30355602192,5sleep23035604-21ntpq22:55:252
2708886991916,1cyclictest0-21swapper/321:50:213
2708886991916,1cyclictest0-21swapper/320:00:123
2708886991916,1cyclictest0-21swapper/319:10:173
2708886991912,4cyclictest0-21swapper/319:30:133
2708886991911,5cyclictest0-21swapper/321:05:223
270888699191,14cyclictest3186725-21taskset00:33:203
270888699191,14cyclictest3178051-21taskset00:25:583
270888699191,14cyclictest3131865-21taskset23:59:083
270888699191,14cyclictest2880030-21taskset21:18:033
270888699191,14cyclictest2845699-21taskset20:54:263
270888699191,14cyclictest2832691-21taskset20:40:463
270888699191,14cyclictest2807517-21taskset20:25:073
270888699191,14cyclictest2729831-21taskset19:20:363
270888699191,13cyclictest3030186-21taskset22:55:013
270888699191,13cyclictest2787967-21taskset20:09:553
270888699191,13cyclictest2762182-21taskset19:49:113
2708886991911,0cyclictest0-21swapper/321:38:233
2708886991910,0cyclictest0-21swapper/322:21:353
270888699190,15cyclictest2768525-21taskset19:52:443
31092512181,6sleep23109455-21awk23:45:172
2708886991816,1cyclictest0-21swapper/321:25:183
2708886991816,1cyclictest0-21swapper/320:55:183
2708886991815,1cyclictest0-21swapper/321:20:203
2708886991815,1cyclictest0-21swapper/320:35:243
2708886991815,1cyclictest0-21swapper/319:40:143
2708886991815,1cyclictest0-21swapper/300:00:223
270888699181,14cyclictest2958954-21taskset22:09:273
270888699181,13cyclictest3162188-21taskset00:15:483
270888699181,13cyclictest2973494-21taskset22:16:123
27625832171,2sleep10-21swapper/119:50:141
2708886991714,1cyclictest0-21swapper/320:45:223
270888699171,13cyclictest3194620-21taskset00:38:413
270888699171,13cyclictest2749167-21taskset19:37:523
29283322161,5sleep12928369-21apt-get21:50:131
270888699161,12cyclictest3020540-21taskset22:45:433
270888699161,11cyclictest2774121-21taskset19:55:203
27419912141,10sleep22736829-21/usr/sbin/munin19:30:232
31090272131,9sleep03109176-21df23:45:150
30080972131,5sleep03009472-21kthreadcore22:40:200
29501192130,1sleep10-21swapper/122:01:031
28864952131,9sleep22886552-21proc_pri21:20:272
28514472131,9sleep0222-21plymouthd20:55:280
31322652121,3sleep2222-21plymouthd00:00:002
31169062121,3sleep2222-21plymouthd23:50:142
30889382121,8sleep03090452-21/usr/sbin/munin23:30:190
30828242120,2sleep10-21swapper/123:25:231
30213792121,2sleep10-21swapper/122:48:071
29895672121,8sleep22989571-21ssh22:27:152
29493382120,9sleep22949384-21ntpq22:00:252
28587002120,1sleep00-21swapper/021:05:010
28333282120,9sleep02833480-21df_inode20:45:130
27459732121,8sleep22747833-21kthreadcore19:35:202
31487402110,5sleep00-21swapper/000:10:170
31229782110,8sleep13122984-21ssh23:51:131
30543392110,8sleep23055100-21irqrtprio23:10:172
30512272110,8sleep13051321-21ntpq23:05:231
30065492117,2sleep10-21swapper/122:40:051
30008902111,7sleep00-21swapper/022:35:190
29874542111,2sleep00-21swapper/022:25:200
29736172110,8sleep12973623-21ssh22:16:311
29283742111,7sleep22928380-21ssh21:50:142
28718552110,8sleep22871861-21ssh21:12:062
28419512111,7sleep10-21swapper/120:50:201
28011102111,6sleep12800846-21sendmail-msp20:20:131
28011102111,6sleep12800846-21sendmail-msp20:20:131
27026712111,2sleep10-21swapper/119:05:121
31708412106,2sleep2431ktimers/200:22:542
31003042100,7sleep23100311-21sh23:38:512
30730582101,6sleep03074517-21kthreadcore23:20:210
30538712101,6sleep13053908-21apt-get23:10:121
30420432101,7sleep20-21swapper/223:00:232
30316882100,7sleep03032664-21tr22:55:190
30291862100,6sleep23029192-21ssh22:53:012
29260742101,6sleep02926339-21head21:45:270
28804632100,1sleep00-21swapper/021:19:170
28276352100,7sleep12828272-21kthreadcore20:40:171
27963702100,7sleep12798100-21kthreadcore20:15:201
27689722101,5sleep22769004-21apt-get19:55:122
27094532101,7sleep02709688-21cut19:10:160
3179855291,3sleep00-21swapper/000:30:130
3136087290,6sleep13137648-21kthreadcore00:00:191
3131717290,1sleep00-21swapper/023:58:460
3045371291,5sleep00-21swapper/023:04:010
3028449291,5sleep00-21swapper/022:51:020
3025502290,6sleep13027380-21cut22:50:191
3005287292,4sleep13005284-21ssh22:37:201
2991131290,6sleep22991328-21idleruntime22:30:162
2975404291,5sleep12975610-21hddtemp_smartct22:20:161
2910291290,6sleep12910456-21timerwakeupswit21:35:301
2896857291,4sleep22896861-21ssh21:30:142
2864082290,6sleep22864128-21ld21:05:242
2857640291,5sleep22857676-21ntpq21:00:232
2844985290,6sleep02845093-21cat20:50:270
2839627291,4sleep22839660-21apt-get20:50:132
2839360291,5sleep21-21systemd20:50:012
2813389290,2sleep20-21swapper/220:26:312
2801074291,6sleep00-21swapper/020:20:120
2801074291,6sleep00-21swapper/020:20:120
2781554291,5sleep02781585-21/usr/sbin/munin20:05:000
2750630291,5sleep02751456-21grep19:40:190
2729134291,5sleep02723791-21sendmail-msp19:20:220
2707866291,4sleep22707903-21ntpq19:05:252
3194785280,6sleep13194790-21sh00:39:081
3180016281,4sleep23180116-21cut00:30:152
3158295280,5sleep13159969-21kthreadcore00:15:191
3156208280,6sleep03156363-21ssh00:15:140
3140560281,3sleep1222-21plymouthd00:05:131
3140555280,4sleep0222-21plymouthd00:05:120
3084740280,2sleep2222-21plymouthd23:29:012
3078651283,3sleep03078985-21kthreadcore23:25:180
3074521285,1sleep10-21swapper/123:20:221
3060899280,1sleep00-21swapper/023:13:400
3006641281,3sleep2249-21jbd2/sda2-822:40:142
3005519281,4sleep23005525-21ssh22:38:012
2966742284,2sleep20-21swapper/222:14:122
2965140281,4sleep02965390-21users22:10:290
2951885281,4sleep02951887-21apt-get22:05:120
2945423280,5sleep02946238-21kthreadcore22:00:190
2942458280,5sleep02942464-21ssh21:56:420
2936203280,2sleep22936163-21/usr/sbin/munin21:55:152
2936202280,4sleep1222-21plymouthd21:55:141
2926401281,2sleep20-21swapper/221:45:332
2910658280,1sleep00-21swapper/021:35:370
2859325280,5sleep02860219-21irqrtprio21:05:180
2839133280,2sleep1222-21plymouthd20:47:061
2832713281,2sleep02708881-21cyclictest20:41:050
2832228281,4sleep22826540-21sendmail-msp20:40:262
2825546282,3sleep12825583-21ntpq20:35:241
2815101281,4sleep2222-21plymouthd20:30:162
2813641280,4sleep0222-21plymouthd20:29:460
2801064280,6sleep22800846-21sendmail-msp20:20:062
2801064280,6sleep22800846-21sendmail-msp20:20:062
2787135281,4sleep22787177-21wc20:05:262
2776037281,4sleep22776780-21/usr/sbin/munin20:00:172
2754949281,4sleep22754992-21ntpq19:40:252
2729266281,4sleep22723791-21sendmail-msp19:20:242
2723712280,2sleep10-21swapper/119:19:471
2702668280,3sleep30-21swapper/319:05:103
3194778270,4sleep03194784-21ssh00:39:070
3187690271,3sleep23187693-21apt-get00:35:132
3186352270,4sleep1222-21plymouthd00:32:151
3172439271,3sleep13172942-21ssh00:25:171
3171375270,1sleep10-21swapper/100:24:171
3164016270,5sleep0222-21plymouthd00:20:110
3156158271,3sleep23156195-21apt-get00:15:122
3107178270,4sleep13107184-21ssh23:40:511
3107178270,4sleep13107184-21ssh23:40:511
3106055270,4sleep23100776-21sendmail-msp23:40:202
3106055270,4sleep23100776-21sendmail-msp23:40:202
3101263270,5sleep03101380-21grep23:40:140
3101263270,5sleep03101380-21grep23:40:130
3098414270,4sleep13098464-21awk23:35:221
3085455271,3sleep13085457-21apt-get23:30:121
3071029271,3sleep23071747-21kthreadcore23:20:192
3067101270,4sleep10-21swapper/123:15:251
3052218270,4sleep23052224-21ssh23:06:202
3046061271,3sleep03046093-21apt-get23:05:140
3037760270,5sleep13037821-21sendmail-msp23:00:011
3020498270,1sleep00-21swapper/022:45:370
2996744271,3sleep0222-21plymouthd22:30:300
2989128270,1sleep10-21swapper/122:25:581
2981468271,3sleep2222-21plymouthd22:21:222
2980462271,3sleep02980512-21ntpq22:20:230
2972576270,4sleep02972614-21ld22:15:220
2967791270,5sleep22968098-21irqcore22:15:162
2966236270,4sleep12966243-21ssh22:12:471
2957021270,4sleep12957121-21ntpq22:05:211
2953293271,4sleep22954852-21grep22:05:182
2913871271,4sleep22914650-21cat21:40:202
2913072271,4sleep12913869-21cut21:40:191
2896815270,4sleep12896856-21ssh21:30:131
2881050270,5sleep02880812-21sendmail-msp21:20:050
2879683271,4sleep12879689-21ssh21:17:061
2872217270,4sleep02872223-21ssh21:13:080
2865336271,3sleep12865372-21apt-get21:10:121
2852204270,5sleep12852190-21sendmail-msp21:00:021
2852099270,1sleep10-21swapper/120:59:381
2813463270,1sleep1222-21plymouthd20:27:261
2800275271,4sleep22800429-21vmstat20:15:292
2787633270,1sleep10-21swapper/120:05:461
2774814271,3sleep0222-21plymouthd19:56:300
2768354271,3sleep0222-21plymouthd19:50:330
2762161270,3sleep2222-21plymouthd19:48:552
2762037270,1sleep10-21swapper/119:47:171
2749027270,1sleep00-21swapper/019:36:050
2744623271,3sleep12745971-21kthreadcore19:35:191
2736273270,4sleep0222-21plymouthd19:26:200
2736247270,1sleep10-21swapper/119:26:011
2717604271,3sleep02717637-21apt-get19:15:130
2714393270,4sleep10-21swapper/119:10:251
2708548271,3sleep00-21swapper/019:07:230
3177224261,3sleep23177264-21ntpq00:25:222
3154453262,2sleep20-21swapper/200:11:072
3148361260,3sleep13148511-21df00:10:141
3137981261,2sleep2249-21jbd2/sda2-800:00:242
3132586260,3sleep03132335-21sendmail-msp00:00:060
3131087260,3sleep13131093-21ssh23:56:551
3122145260,3sleep03122194-21ntpq23:50:240
3111162261,2sleep10-21swapper/123:45:201
3098270260,1sleep00-21swapper/023:35:210
3092248260,3sleep2222-21plymouthd23:33:102
3068102260,3sleep23068108-21ssh23:16:462
3064223261,3sleep03065915-21grep23:15:200
2920458261,2sleep10-21swapper/121:45:121
2912594261,2sleep00-21swapper/021:40:140
2911715260,1sleep20-21swapper/221:38:322
2896272260,3sleep1222-21plymouthd21:29:291
2894967260,1sleep00-21swapper/021:25:470
2888960261,2sleep22888999-21apt-get21:25:132
2874910260,3sleep22876120-21ssh21:15:182
2846050260,3sleep2222-21plymouthd20:55:142
2826414260,2sleep2222-21plymouthd20:39:102
2826289260,3sleep0222-21plymouthd20:37:320
2800448260,1sleep00-21swapper/020:15:430
2794243260,2sleep2222-21plymouthd20:13:402
2794074260,1sleep10-21swapper/120:11:311
2789204261,2sleep00-21swapper/020:10:180
2787779260,1sleep00-21swapper/020:07:370
2781246260,3sleep1222-21plymouthd20:01:041
2774840260,3sleep1222-21plymouthd19:56:521
2768534260,3sleep2222-21plymouthd19:52:522
2755556260,1sleep10-21swapper/119:41:081
2742765260,3sleep1222-21plymouthd19:32:421
2735954260,4sleep22736198-21users19:25:292
2729998260,1sleep10-21swapper/119:22:441
3178234250,2sleep0222-21plymouthd00:26:330
3146409250,2sleep2222-21plymouthd00:05:342
3036367250,2sleep1222-21plymouthd22:56:091
3016232250,2sleep2222-21plymouthd22:45:192
2990831250,3sleep12990837-21ssh22:30:031
2933604251,2sleep02933650-21ntpq21:50:240
2864665250,3sleep10-21swapper/121:05:391
2817904250,3sleep02818966-21memory20:30:180
2813960250,2sleep10-21swapper/120:30:111
2756118250,2sleep0222-21plymouthd19:45:040
2736823250,2sleep0222-21plymouthd19:30:090
2718655251,2sleep20-21swapper/219:15:192
2709052250,2sleep2222-21plymouthd19:10:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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