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2026-09-13 - 05:33
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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 Sun Sep 13, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
336796423050,1sleep10-21swapper/119:20:261
353545221210,2sleep1321rcuc/121:30:191
3347628992724,1cyclictest0-21swapper/321:35:013
3347628992522,1cyclictest0-21swapper/321:50:003
3347628992522,1cyclictest0-21swapper/319:50:003
3347628992422,1cyclictest0-21swapper/300:10:013
3347628992421,1cyclictest0-21swapper/321:50:143
3347628992421,1cyclictest0-21swapper/321:40:013
3347628992421,1cyclictest0-21swapper/320:05:003
3347628992219,1cyclictest0-21swapper/323:20:123
334762899219,8cyclictest3519101-21turbostat21:20:013
3347628992118,1cyclictest0-21swapper/321:05:013
3347628992118,1cyclictest0-21swapper/300:00:153
334762899211,14cyclictest3558469-21taskset21:45:003
3347628992017,1cyclictest0-21swapper/322:40:133
3347628992017,1cyclictest0-21swapper/322:20:163
3347628992017,1cyclictest0-21swapper/322:12:143
3347628992017,1cyclictest0-21swapper/322:12:143
3347628992017,1cyclictest0-21swapper/320:20:343
334762899201,14cyclictest3768630-21turbostat00:00:003
37840972191,7sleep03784126-21munin-run00:10:000
3347628991917,1cyclictest0-21swapper/322:00:013
3347628991916,1cyclictest0-21swapper/323:15:013
3347628991916,1cyclictest0-21swapper/321:25:173
3347628991916,1cyclictest0-21swapper/321:20:273
3347628991916,1cyclictest0-21swapper/320:40:043
334762899191,14cyclictest3821801-21taskset00:31:143
334762899191,14cyclictest3698760-21chrt23:15:133
334762899191,14cyclictest3472920-21taskset20:45:193
334762899191,14cyclictest3425641-21taskset20:05:223
334762899189,6cyclictest36234632sleep322:25:193
3347628991816,1cyclictest0-21swapper/300:21:023
3347628991815,1cyclictest0-21swapper/323:40:123
3347628991815,1cyclictest0-21swapper/323:35:253
3347628991815,1cyclictest0-21swapper/323:25:213
3347628991815,1cyclictest0-21swapper/323:00:253
3347628991815,1cyclictest0-21swapper/322:55:173
3347628991815,1cyclictest0-21swapper/322:30:213
3347628991815,1cyclictest0-21swapper/322:15:193
3347628991815,1cyclictest0-21swapper/320:55:213
3347628991815,1cyclictest0-21swapper/320:30:003
3347628991815,1cyclictest0-21swapper/319:40:213
3347628991815,1cyclictest0-21swapper/319:35:143
3347628991815,1cyclictest0-21swapper/319:15:243
3347628991814,1cyclictest0-21swapper/319:20:153
334762899181,14cyclictest3827641-21taskset00:35:203
334762899181,14cyclictest3666510-21taskset22:52:443
334762899181,13cyclictest3760560-21taskset23:54:233
334762899181,13cyclictest3658400-21taskset22:46:433
334762899181,13cyclictest3427053-21taskset20:10:153
334762899181,13cyclictest3407648-21chrt19:55:153
334762899181,13cyclictest3375034-21taskset19:26:533
334762899180,15cyclictest3721861-21turbostat23:34:553
3347628991714,1cyclictest0-21swapper/321:55:263
3347628991714,1cyclictest0-21swapper/320:35:233
334762899171,13cyclictest3810206-21taskset00:25:183
334762899171,13cyclictest3798306-21taskset00:16:163
334762899171,13cyclictest3791106-21taskset00:12:473
334762899171,13cyclictest3689700-21taskset23:07:193
334762899171,13cyclictest3591133-21taskset22:05:163
334762899171,13cyclictest3509845-21taskset21:11:013
334762899171,13cyclictest3433219-21taskset20:15:123
334762899171,13cyclictest3375585-21chrt19:30:133
334762899171,12cyclictest3639856-21taskset22:35:203
334762899171,12cyclictest3406343-21taskset19:50:223
334762899171,12cyclictest3353066-21taskset19:10:253
3347628991710,4cyclictest37519792chrt23:47:053
334762899161,13cyclictest3484003-21taskset20:52:273
334762899161,12cyclictest3503201-21taskset21:06:243
37664402150,12sleep03766486-21ntpq23:55:250
37194582151,10sleep23719601-21sh23:25:202
334762899151,12cyclictest3458231-21taskset20:30:553
334762899151,12cyclictest3458231-21taskset20:30:543
36495922141,5sleep13649639-21ld22:40:241
334762899144,7cyclictest3347735-21taskset19:10:013
38216442135,1sleep2171rcu_preempt00:30:512
38159542132,8sleep03816132-21/usr/sbin/munin00:30:210
36661682130,9sleep23666174-21ssh22:51:442
36456722132,4sleep03646581-21kthreadcore22:40:190
38021492121,8sleep23803410-21kthreadcore00:20:202
37921802121,8sleep13792185-21/usr/sbin/munin00:15:141
37372472121,3sleep13737253-21ssh23:39:501
37289982120,5sleep00-21swapper/023:33:270
37039912121,9sleep03704034-21ntpq23:15:240
36731962120,8sleep03673305-21/usr/sbin/munin22:55:310
36278152120,6sleep03627817-21ssh22:28:280
35347442120,9sleep23534746-21ssh21:29:572
35248212120,2sleep20-21swapper/221:20:272
34987632121,8sleep23500306-21kthreadcore21:05:192
34538352121,8sleep13454368-21kthreadcore20:30:181
34538352121,8sleep13454368-21kthreadcore20:30:181
34075952120,3sleep23407387-21appstreamcli19:55:032
37831742111,8sleep13783180-21ssh00:07:171
36813242110,8sleep13681330-21ssh23:00:411
35893452111,7sleep23589351-21ssh22:04:492
34718922110,7sleep03471937-21fschecks_count20:45:170
34640962111,7sleep2222-21plymouthd20:35:242
33884222111,8sleep1874-21rs:main1
33472772112,5sleep0222-21plymouthd19:07:230
38000372101,7sleep0874-21rs:main0
37770762101,6sleep23777633-21sed00:05:172
37758692100,7sleep13775875-21ssh00:03:391
37226362100,7sleep13722131-21/usr/sbin/munin23:30:161
37182852100,1sleep10-21swapper/123:25:181
37124562104,4sleep014-21ksoftirqd/023:20:280
35964932100,7sleep23596499-21ssh22:07:582
35639162101,5sleep23563964-21sshd-session21:45:242
35568702100,4sleep1171rcu_preempt21:41:071
35193742100,7sleep13519377-21ssh21:20:101
35038652100,7sleep03503954-21cut21:10:140
34908692100,7sleep03491017-21/usr/sbin/munin21:00:160
34201822101,2sleep10-21swapper/120:05:011
34077132100,7sleep03407812-21/usr/sbin/munin19:55:160
34009192100,4sleep03381765-21kworker/0:1+kacpid19:49:390
3769224290,6sleep03769413-21cat00:00:180
3760434290,2sleep23760436-21ssh23:54:032
3758557291,4sleep03758607-21ntpq23:50:230
3743029291,5sleep13737377-21sendmail-msp23:40:211
3737093290,2sleep2222-21plymouthd23:39:152
3689459291,5sleep10-21swapper/123:06:431
3667032290,2sleep0222-21plymouthd22:54:150
3666841290,6sleep13666847-21ssh22:53:351
3657397291,2sleep00-21swapper/022:45:250
3644271291,4sleep2222-21plymouthd22:40:132
3615225291,5sleep03616500-21grep22:20:190
3611571291,1sleep1222-21plymouthd22:16:391
3574801290,7sleep13575667-21kthreadcore21:55:181
3564842290,2sleep13564848-21ssh21:46:361
3564007290,5sleep03564135-21python321:45:270
3556992290,1sleep00-21swapper/021:41:260
3551120293,4sleep23542380-21kworker/u16:3+xprtiod21:40:152
3519597295,2sleep014-21ksoftirqd/021:20:170
3484188290,2sleep0222-21plymouthd20:54:510
3470472290,3sleep1249-21jbd2/sda2-820:40:211
3440562291,5sleep13439375-21sendmail-msp20:20:201
3426493290,1sleep1222-21plymouthd20:08:441
3414040291,6sleep2249-21jbd2/sda2-820:00:132
3381957291,4sleep23381990-21apt-get19:35:112
3377365290,6sleep03379090-21cut19:30:200
3376005290,6sleep23376906-21irqrtprio19:30:182
3368580290,7sleep20-21swapper/219:20:432
3362390290,2sleep2222-21plymouthd19:18:552
3350798290,5sleep23352663-21kthreadcore19:10:202
3347233290,5sleep10-21swapper/119:06:481
3830472281,2sleep13503509-21diskmemload00:38:561
3816133280,2sleep13816758-21ssh00:30:221
3813125281,4sleep23813168-21ntpq00:25:222
3807524280,6sleep13807616-21latency_hist00:25:011
3768554280,5sleep23768561-21ssh23:59:562
3767828280,2sleep1222-21plymouthd23:57:541
3744619282,3sleep0222-21plymouthd23:43:170
3706816281,4sleep23706211-21sendmail-msp23:20:152
3697840280,5sleep03697846-21ssh23:13:270
3696854281,4sleep13696860-21ssh23:10:311
3667714281,3sleep23667712-21apt-get22:55:162
3641700281,4sleep23641745-21ntpq22:35:242
3616501281,4sleep13617949-21kthreadcore22:20:201
3607069282,4sleep23605018-21kworker/2:0-events22:15:202
3604595282,3sleep2222-21plymouthd22:13:592
3604595282,3sleep2222-21plymouthd22:13:592
3602815281,4sleep03602859-21ntp_states22:10:240
3602815281,4sleep03602859-21ntp_states22:10:230
3595006281,4sleep03595052-21ntpq22:05:230
3588235280,2sleep1222-21plymouthd22:01:391
3548960280,2sleep1222-21plymouthd21:35:561
3517017281,4sleep03517136-21python321:15:270
3471706282,3sleep13471739-21apt-get20:45:141
3464003281,4sleep03464049-21ntpq20:35:220
3457631281,3sleep23457666-21ntpq20:30:232
3457631281,3sleep23457666-21ntpq20:30:232
3439642281,3sleep0222-21plymouthd20:20:150
3438487280,5sleep13438587-21mailstats20:15:261
3427347280,2sleep1171rcu_preempt20:10:181
3426896281,4sleep23427052-21diskstats20:10:152
3413472281,3sleep1222-21plymouthd19:56:541
3374290281,3sleep13374338-21ntpq19:25:241
3370685281,4sleep23372360-21tr19:25:212
3369590281,5sleep03369933-21sed19:25:190
3828469271,3sleep03828615-21ntpq00:35:220
3815337270,4sleep03815547-21cut00:30:010
3807891270,4sleep1222-21plymouthd00:25:131
3797452271,3sleep03797493-21ntpq00:15:260
3789564271,3sleep23789711-21ntpq00:10:252
3769934270,5sleep23770513-21kthreadcore00:00:202
3759520270,1sleep13759528-21ssh23:51:241
3750891270,4sleep23750922-21ntpq23:45:252
3743073271,3sleep2222-21plymouthd23:40:232
3737108271,3sleep0222-21plymouthd23:39:170
3723560271,3sleep20-21swapper/223:30:172
3720289270,3sleep0222-21plymouthd23:25:420
3708091271,4sleep13709424-21grep23:20:181
3705287270,5sleep1222-21plymouthd23:17:291
3690233270,4sleep23690241-21ssh23:08:512
3680675271,3sleep03680715-21ntpq23:00:240
3675885271,3sleep2222-21plymouthd23:00:182
3659162270,1sleep1222-21plymouthd22:49:051
3636520270,3sleep03636516-21apt-get22:35:140
3635538270,5sleep13635544-21ssh22:33:151
3628624270,3sleep23628649-21apt-get22:30:032
3627191270,5sleep23627197-21ssh22:26:422
3605252270,4sleep03605258-21ssh22:15:080
3597520271,3sleep1222-21plymouthd22:10:131
3597520271,3sleep1222-21plymouthd22:10:131
3589703271,3sleep13589736-21apt-get22:05:121
3587944271,3sleep03581616-21sendmail-msp22:00:540
3580319270,1sleep2222-21plymouthd21:56:262
3574135270,3sleep0222-21plymouthd21:55:130
3573708270,1sleep20-21swapper/221:54:472
3566549271,3sleep00-21swapper/021:50:160
3540189270,1sleep2171rcu_preempt21:30:252
3535305270,5sleep03535450-21tail21:30:190
3534160270,1sleep00-21swapper/021:28:150
3517869270,1sleep10-21swapper/121:16:321
3511595271,3sleep23511628-21apt-get21:15:142
3506708270,5sleep23508524-21kthreadcore21:10:202
3486604270,4sleep13488390-21cut20:55:201
3484471271,3sleep23484504-21apt-get20:55:132
3478125271,3sleep13478282-21diskstats20:50:151
3477494271,3sleep2222-21plymouthd20:45:512
3470330271,4sleep00-21swapper/020:40:200
3464818271,3sleep1222-21plymouthd20:37:481
3451951270,4sleep0222-21plymouthd20:27:170
3445736270,1sleep20-21swapper/220:24:262
3434625270,5sleep23435940-21cat20:15:192
3432800270,1sleep00-21swapper/020:13:050
3425765270,4sleep23425868-21grep20:05:262
3407035270,1sleep2222-21plymouthd19:51:352
3400676270,1sleep10-21swapper/119:46:331
3388378270,4sleep2249-21jbd2/sda2-819:40:082
3353653271,3sleep1222-21plymouthd19:11:411
3342832271,3sleep23344394-21tr19:05:162
3792615260,3sleep23793142-21sed00:15:192
3789762261,2sleep03789816-21ntpq00:10:280
3698720261,2sleep23698757-21apt-get23:15:142
3697695260,1sleep23697701-21ssh23:13:052
3690480260,1sleep00-21swapper/023:09:340
3675023260,3sleep13675102-21ssh23:00:011
3643183260,4sleep13643189-21ssh22:38:031
3628354261,3sleep03628383-21latency_hist22:30:010
3627423261,3sleep13627429-21ssh22:27:161
3613140260,3sleep23613133-21apt-get22:20:132
3566343260,2sleep13566380-21apt-get21:50:131
3544315261,2sleep00-21swapper/021:35:200
3497958261,2sleep10-21swapper/121:05:181
3497357261,2sleep00-21swapper/021:05:120
3493280261,3sleep2872-21in:imuxsock21:00:222
3492236261,2sleep10-21swapper/121:00:211
3483867260,1sleep20-21swapper/220:50:442
3465482261,3sleep2249-21jbd2/sda2-820:40:142
3448810260,3sleep13450661-21cut20:25:211
3439264260,1sleep00-21swapper/020:19:230
3426282260,3sleep0222-21plymouthd20:06:040
3420145260,1sleep00-21swapper/020:04:320
3406967260,2sleep1222-21plymouthd19:50:411
3403730261,3sleep03405412-21kthreadcore19:50:200
3397750260,4sleep23399625-21tr19:45:212
3388421260,2sleep0222-21plymouthd19:40:140
3388015261,2sleep10-21swapper/119:38:591
3387882260,3sleep0222-21plymouthd19:37:170
3367822260,3sleep03367962-21ntpq19:20:260
3362322260,1sleep10-21swapper/119:18:021
3359344260,3sleep03361193-21tr19:15:200
3353692260,3sleep0222-21plymouthd19:12:120
3825994251,2sleep20-21swapper/200:35:202
3784458250,2sleep1222-21plymouthd00:10:171
3751600250,2sleep1222-21plymouthd23:46:001
3746990251,2sleep00-21swapper/023:45:190
3658107250,2sleep2222-21plymouthd22:45:582
3542879250,2sleep23542917-21ssh21:35:132
3533734250,2sleep10-21swapper/121:27:021
3505261250,2sleep13506537-21ssh21:10:191
3485676250,2sleep00-21swapper/020:55:180
3452179250,2sleep0222-21plymouthd20:30:010
3452179250,2sleep0222-21plymouthd20:30:010
3451898250,2sleep2222-21plymouthd20:26:342
3375548250,2sleep10-21swapper/119:30:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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