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2026-08-18 - 16:17
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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
Characteristics of the 376 highest latencies:
System rackeslot2.osadl.org (updated Tue Aug 18, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36436962840,2sleep30-21swapper/310:10:083
36427482720,1sleep03642746-21ssh10:09:170
3410089993021,8cyclictest3450087-21apt-key07:45:011
3410089993014,11cyclictest3416369-21munin-node11:20:071
3410090992819,1cyclictest0-21swapper/211:55:012
3410089992812,11cyclictest3576984-21fschecks_time09:25:101
3410090992719,1cyclictest0-21swapper/212:05:022
3410090992517,1cyclictest0-21swapper/209:30:022
341008999251,14cyclictest3436853-21python307:30:171
3410089992511,10cyclictest3776278-21runrttasks11:39:211
3410088992514,6cyclictest0-21swapper/010:45:020
3410089992415,8cyclictest684-21systemd-logind10:05:011
3410089992411,6cyclictest3576309-21kworker/u16:3+nfsiod11:03:301
3410088992421,2cyclictest664-21dbus-daemon08:55:010
3410090992320,1cyclictest0-21swapper/208:55:022
3410089992316,6cyclictest3828416-21grep12:15:001
341008999231,5cyclictest3605091-21runrttasks09:42:331
341008999231,5cyclictest3534861-21runrttasks08:51:311
341008999231,5cyclictest3486452-21runrttasks08:14:211
3410089992315,7cyclictest684-21systemd-logind09:55:031
3410088992315,7cyclictest759-1atopacctd11:45:060
3410090992219,1cyclictest0-21swapper/208:05:012
341008999228,9cyclictest0-21swapper/112:24:081
341008999228,7cyclictest3576309-21kworker/u16:3-events_unbound09:37:581
341008999222,3cyclictest3498457-21taskset08:22:101
341008999221,5cyclictest3716298-21sh10:57:391
341008999221,5cyclictest3480319-21runrttasks08:08:541
341008999221,5cyclictest1034-21runrttasks09:06:011
341008999221,4cyclictest3835395-21sh12:19:141
341008999221,4cyclictest3760683-21runrttasks11:26:501
341008999221,4cyclictest3672185-21taskset10:28:391
341008999221,4cyclictest3415786-21runrttasks07:13:101
341008999221,16cyclictest3791462-21latency_hist11:50:031
341008999220,5cyclictest3850526-21taskset12:29:521
341008999220,5cyclictest3522863-21taskset08:43:311
341008999220,5cyclictest3468213-21taskset07:59:461
341008999220,5cyclictest3419157-21taskset07:18:061
341008999220,5cyclictest3419157-21taskset07:18:061
3410090992118,1cyclictest0-21swapper/209:35:022
341008999216,13cyclictest0-21swapper/111:57:571
341008999211,6cyclictest1034-21runrttasks10:46:131
341008999211,5cyclictest3627512-21runrttasks09:58:081
341008999211,5cyclictest3611998-21taskset09:46:021
341008999211,5cyclictest3442816-21/usr/sbin/munin07:35:161
341008999211,5cyclictest1034-21runrttasks11:12:031
341008999211,5cyclictest1034-21runrttasks10:13:511
341008999211,5cyclictest1034-21runrttasks07:53:521
341008999211,4cyclictest3812122-21runrttasks12:00:461
341008999211,4cyclictest3783789-21runrttasks11:44:371
341008999211,4cyclictest3528770-21runrttasks08:46:181
341008999211,3cyclictest3546884-21python309:00:171
341008999211,3cyclictest3546884-21python309:00:171
341008999211,3cyclictest1034-21runrttasks08:56:471
3410089992113,7cyclictest3703615-21irqcore10:50:101
3410089992113,7cyclictest3559569-21vmstat09:10:191
341008999211,15cyclictest3687571-21latency_hist10:40:011
341008999210,5cyclictest3510537-21runrttasks08:31:321
341008999210,5cyclictest1034-21runrttasks08:01:171
341008999210,4cyclictest3694015-21taskset10:42:271
341008999210,4cyclictest3516734-21runrttasks08:38:051
341008999210,4cyclictest3492394-21taskset08:17:371
341008999210,4cyclictest3425309-21taskset07:23:471
1157598210,4rtkit-daemon3667780-21grep10:25:130
3410090992017,1cyclictest0-21swapper/209:40:032
341008999204,14cyclictest268-21systemd-journal10:18:581
341008999202,10cyclictest3567574-21taskset09:17:011
341008999201,5cyclictest3679876-21runrttasks10:34:271
341008999201,5cyclictest3498665-21/usr/sbin/munin08:25:121
341008999201,4cyclictest3664574-21runrttasks10:23:051
341008999201,4cyclictest1034-21runrttasks11:54:391
3410089992012,7cyclictest3732306-21dpkg11:10:011
3410089992012,7cyclictest3571772-21kthreadcore09:20:141
3410089992011,8cyclictest3741297-21kthreadcore11:15:121
341008999200,5cyclictest3857117-21runrttasks12:32:391
341008999200,5cyclictest3813682-21aten2.4-expect12:05:031
341008999200,3cyclictest3762252-21aten2.4-expect11:30:071
3410088992018,1cyclictest3541643-21cron09:00:010
3410088992014,5cyclictest1307-21mta-sts-daemon10:12:510
3410088992014,5cyclictest10930-21cron10:25:010
341008899200,4cyclictest3597649-21ssh09:37:330
3240591200,2phc2sys0-21swapper/312:25:093
3410090991916,1cyclictest0-21swapper/211:30:072
3410090991915,2cyclictest0-21swapper/210:32:542
3410089991911,7cyclictest3426383-21fschecks_time07:25:091
3410089991910,8cyclictest3586630-21kthreadcore09:30:131
341008899199,5cyclictest0-21swapper/009:50:580
341008899198,6cyclictest0-21swapper/011:00:130
3410088991913,4cyclictest3419325-21apt-get07:19:490
3410088991913,4cyclictest3419325-21apt-get07:19:490
3410088991913,1cyclictest3770070-21diskstats11:35:080
3410088991912,6cyclictest0-21swapper/009:50:020
3240591190,5phc2sys0-21swapper/307:29:513
3240591190,2phc2sys0-21swapper/309:11:503
3410090991816,1cyclictest0-21swapper/208:30:022
3410090991815,1cyclictest0-21swapper/211:40:022
3410090991815,1cyclictest0-21swapper/211:20:012
341008999182,9cyclictest0-21swapper/112:35:101
3410089991811,6cyclictest3619562-21kworker/u16:0+nfsiod10:05:171
341008899189,2cyclictest0-21swapper/010:35:160
341008899189,1cyclictest3746898-21ssh11:19:500
341008899188,5cyclictest0-21swapper/012:37:570
341008899187,6cyclictest0-21swapper/012:29:570
341008899187,6cyclictest0-21swapper/009:55:130
3410088991815,2cyclictest3591109-21apt-config09:35:010
3410088991813,1cyclictest1157598rtkit-daemon10:16:280
3410088991810,7cyclictest3777730-21ssh11:40:090
378398921710,2sleep30-21swapper/311:44:563
36354102177,8sleep00-21swapper/010:04:330
3410090991714,1cyclictest0-21swapper/212:40:022
3410090991714,1cyclictest0-21swapper/210:50:172
3410090991714,1cyclictest0-21swapper/210:45:102
3410090991714,1cyclictest0-21swapper/209:05:102
3410090991714,1cyclictest0-21swapper/209:00:082
3410090991714,1cyclictest0-21swapper/209:00:082
3410090991714,1cyclictest0-21swapper/207:35:022
341008899179,7cyclictest0-21swapper/009:14:520
341008899177,2cyclictest0-21swapper/010:59:500
3410088991714,2cyclictest664-21dbus-daemon11:10:170
3410088991714,2cyclictest11561-21sendmail-mta12:16:360
3410088991714,2cyclictest0-21swapper/011:30:010
3240591170,5phc2sys0-21swapper/307:10:023
3240591170,2phc2sys0-21swapper/312:33:513
3240591170,2phc2sys0-21swapper/310:47:213
3410090991613,2cyclictest0-21swapper/212:00:022
3410090991613,1cyclictest0-21swapper/212:30:112
3410090991613,1cyclictest0-21swapper/211:10:012
3410090991613,1cyclictest0-21swapper/211:00:162
3410090991613,1cyclictest0-21swapper/210:20:142
3410090991613,1cyclictest0-21swapper/210:00:032
3410090991613,1cyclictest0-21swapper/209:25:022
3410090991613,1cyclictest0-21swapper/207:55:142
3410090991613,1cyclictest0-21swapper/207:55:012
3410090991613,1cyclictest0-21swapper/207:10:092
3410090991612,2cyclictest0-21swapper/210:05:152
3410089991610,4cyclictest1307-21mta-sts-daemon07:45:071
341008899168,7cyclictest3571888-21kthreadcore09:20:130
341008899168,7cyclictest0-21swapper/012:34:500
341008899168,2cyclictest0-21swapper/009:15:100
341008899167,5cyclictest3840462-21kthreadcore12:20:130
341008899165,6cyclictest0-21swapper/009:45:000
3410088991614,1cyclictest3410086-21cyclictest07:35:100
3410088991614,1cyclictest1034-21runrttasks11:55:090
3410088991613,2cyclictest759-1atopacctd07:10:060
3410088991613,2cyclictest3516770-21sshd08:38:330
3410088991613,2cyclictest3456112-21/usr/sbin/munin07:50:170
3240591164,2phc2sys0-21swapper/307:55:083
3240591163,2phc2sys0-21swapper/310:57:293
3240591161,4phc2sys0-21swapper/308:29:503
3240591160,2phc2sys0-21swapper/309:59:103
3240591160,1phc2sys0-21swapper/309:26:093
341009099151,8cyclictest0-21swapper/208:40:002
341009099151,8cyclictest0-21swapper/208:19:512
3410090991513,1cyclictest0-21swapper/212:07:142
3410090991513,1cyclictest0-21swapper/211:45:012
3410090991513,1cyclictest0-21swapper/210:05:022
3410090991513,1cyclictest0-21swapper/207:40:022
3410090991512,1cyclictest0-21swapper/212:15:092
3410090991512,1cyclictest0-21swapper/211:10:122
3410090991512,1cyclictest0-21swapper/210:38:592
3410090991512,1cyclictest0-21swapper/210:26:032
3410090991512,1cyclictest0-21swapper/210:10:182
3410090991512,1cyclictest0-21swapper/209:50:162
3410090991512,1cyclictest0-21swapper/209:45:582
3410090991512,1cyclictest0-21swapper/207:45:172
3410090991512,1cyclictest0-21swapper/207:45:012
3410090991512,1cyclictest0-21swapper/207:30:002
3410090991511,2cyclictest0-21swapper/207:20:132
341008899159,1cyclictest3680221-21munin-run10:35:010
341008899159,1cyclictest0-21swapper/007:59:500
341008899156,5cyclictest3797345-21sshd11:50:570
3410088991513,1cyclictest1309-21mta-sts-daemon07:40:090
3410088991512,2cyclictest664-21dbus-daemon07:25:020
3410088991512,2cyclictest3769540-21systemd-run11:35:020
3410088991512,2cyclictest3724998-21aten_repower_vo11:05:030
3410088991512,2cyclictest3554118-21munin-plugin-st09:10:020
3410088991511,2cyclictest0-21swapper/012:05:010
341008899150,9cyclictest3485569-21tail08:10:150
341008899150,3cyclictest3703177-21ssh10:50:080
341008899150,13cyclictest3437719-21grep07:35:000
3240591151,4phc2sys0-21swapper/311:34:503
3240591150,2phc2sys0-21swapper/311:19:263
341009099141,8cyclictest0-21swapper/211:50:002
3410090991412,1cyclictest0-21swapper/211:25:132
3410090991412,1cyclictest0-21swapper/209:15:112
3410090991412,1cyclictest0-21swapper/208:35:012
3410090991411,1cyclictest0-21swapper/212:26:102
3410090991411,1cyclictest0-21swapper/212:20:062
3410090991411,1cyclictest0-21swapper/210:56:432
3410090991411,1cyclictest0-21swapper/210:42:392
3410090991411,1cyclictest0-21swapper/210:15:102
3410090991411,1cyclictest0-21swapper/209:11:572
3410090991411,1cyclictest0-21swapper/208:40:122
3410090991411,1cyclictest0-21swapper/208:10:182
3410090991410,2cyclictest0-21swapper/212:10:272
3410090991410,2cyclictest0-21swapper/211:24:272
341008899146,6cyclictest3427400-21tr07:25:120
341008899145,5cyclictest0-21swapper/008:32:540
341008899143,4cyclictest3489634-21kthreadcore08:15:130
3410088991412,1cyclictest3820811-21/usr/sbin/munin12:10:180
3410088991412,1cyclictest1306-21mta-sts-daemon09:27:010
3410088991411,2cyclictest3751303-21kthreadcore11:20:140
3410088991411,2cyclictest3700712-21unixbench_singl10:45:200
3410088991411,2cyclictest3497928-21mailstats08:20:170
3410088991411,2cyclictest3475976-21kthreadcore08:05:120
3410088991411,2cyclictest3451678-21kthreadcore07:45:120
3240591140,3phc2sys0-21swapper/309:48:153
3240591140,2phc2sys0-21swapper/311:36:573
3240591140,2phc2sys0-21swapper/311:14:503
3240591140,2phc2sys0-21swapper/310:34:333
3240591140,2phc2sys0-21swapper/310:05:053
3240591140,2phc2sys0-21swapper/308:05:173
3410090991311,1cyclictest0-21swapper/208:50:022
3410090991311,1cyclictest0-21swapper/208:20:102
3410090991310,1cyclictest0-21swapper/208:05:122
341008999132,4cyclictest664-21dbus-daemon07:10:021
341008899134,4cyclictest3516872-21/usr/sbin/munin08:40:080
3410088991310,2cyclictest3815032-21irqrtprio12:05:110
3410088991310,2cyclictest3524780-21kthreadcore08:45:130
341008899130,5cyclictest3471676-21cut08:00:130
341008899130,3cyclictest501rcuop/209:04:510
341008899130,3cyclictest501rcuop/209:04:510
3240591131,3phc2sys0-21swapper/309:30:103
3240591130,2phc2sys0-21swapper/312:19:063
3240591130,2phc2sys0-21swapper/310:35:393
3240591130,2phc2sys0-21swapper/310:01:323
3240591130,2phc2sys0-21swapper/309:20:443
3240591130,1phc2sys0-21swapper/311:52:213
3240591130,1phc2sys0-21swapper/308:14:553
37237132120,3sleep30-21swapper/311:02:403
3410090991210,1cyclictest0-21swapper/209:40:132
3410090991210,1cyclictest0-21swapper/208:55:102
3410090991210,1cyclictest0-21swapper/207:15:052
3410090991210,1cyclictest0-21swapper/207:15:052
341008899127,1cyclictest501rcuop/208:25:150
3240591122,2phc2sys0-21swapper/310:25:093
3240591122,2phc2sys0-21swapper/307:10:123
3240591121,2phc2sys0-21swapper/312:35:353
3240591120,2phc2sys0-21swapper/312:09:503
3240591120,2phc2sys0-21swapper/312:01:483
3240591120,2phc2sys0-21swapper/311:07:453
3240591120,2phc2sys0-21swapper/309:52:503
3240591120,2phc2sys0-21swapper/307:17:213
3240591120,2phc2sys0-21swapper/307:17:213
3240591120,1phc2sys0-21swapper/309:04:563
3240591120,1phc2sys0-21swapper/309:04:563
3240591113,2phc2sys0-21swapper/310:51:503
3240591112,2phc2sys0-21swapper/310:40:203
3240591112,2phc2sys0-21swapper/308:40:123
3240591110,5phc2sys0-21swapper/308:19:513
3240591110,4phc2sys0-21swapper/311:20:153
3240591110,3phc2sys0-21swapper/311:49:583
3240591110,2phc2sys0-21swapper/312:24:413
3240591110,2phc2sys0-21swapper/309:35:153
3240591110,1phc2sys0-21swapper/308:04:133
3240591110,1phc2sys0-21swapper/307:36:483
341008899103,5cyclictest664-21dbus-daemon07:10:020
34097292101,5sleep20-21swapper/207:09:502
3240591102,2phc2sys0-21swapper/311:27:573
3240591101,2phc2sys0-21swapper/309:05:083
3240591100,4phc2sys0-21swapper/308:39:503
3240591100,2phc2sys0-21swapper/310:22:243
3240591100,2phc2sys0-21swapper/310:17:033
3240591100,2phc2sys0-21swapper/309:19:563
3240591100,2phc2sys0-21swapper/308:59:563
3240591100,2phc2sys0-21swapper/307:45:023
3240591100,1phc2sys0-21swapper/308:46:213
3240591100,1phc2sys0-21swapper/307:48:423
324059191,2phc2sys0-21swapper/307:25:023
324059190,2phc2sys0-21swapper/312:10:343
324059190,2phc2sys0-21swapper/311:55:113
324059190,2phc2sys0-21swapper/309:41:443
324059190,2phc2sys0-21swapper/308:50:373
324059190,2phc2sys0-21swapper/308:30:183
324059190,2phc2sys0-21swapper/308:20:123
324059190,2phc2sys0-21swapper/307:50:073
324059190,2phc2sys0-21swapper/307:30:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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