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2026-04-14 - 16:34
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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 Apr 14, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26875122980,2sleep30-21swapper/311:05:003
27876352960,1sleep12787638-21cat12:10:561
25784102540,1sleep10-21swapper/109:50:591
2649091301,10phc2sys0-21swapper/309:15:513
2360475993019,10cyclictest2705203-21kthreadcore11:15:590
27865822290,2sleep20-21swapper/212:10:532
2360475992814,9cyclictest0-21swapper/011:10:020
2360476992721,2cyclictest134050irq/121-eno111:21:001
2360475992713,9cyclictest0-21swapper/011:15:010
2360475992616,9cyclictest2559700-21/usr/sbin/munin09:40:540
24386042250,1sleep20-21swapper/208:10:002
2360476992519,2cyclictest134050irq/121-eno111:45:551
2360476992515,3cyclictest2669153-21kthreadcore10:50:581
2360475992519,5cyclictest1-21systemd09:25:000
2360475992512,9cyclictest0-21swapper/011:30:020
2360476992420,3cyclictest2470396-21apt-config08:35:011
2360476992413,2cyclictest134050irq/121-eno109:35:531
2360476992412,6cyclictest0-21swapper/111:55:011
2360475992418,5cyclictest2665061-21munin-plugin-st10:50:000
2360475992418,5cyclictest2414749-21grep07:50:560
2360475992417,5cyclictest2476827-21/usr/sbin/munin08:40:010
2360475992412,8cyclictest1996-21runrttasks12:27:420
2360475992410,9cyclictest0-21swapper/012:30:530
2360476992319,2cyclictest2388309-21wc07:30:011
2360476992317,2cyclictest134050irq/121-eno109:25:001
2360476992315,3cyclictest3952751-21ntpd11:56:361
2360476992315,3cyclictest0-21swapper/110:30:021
2360476992313,6cyclictest3851704-21mta-sts-daemon09:32:301
2360476992312,3cyclictest0-21swapper/110:25:021
2360476992311,3cyclictest0-21swapper/112:20:011
236047599239,9cyclictest2681813-21kthreadcore11:00:580
2360475992317,5cyclictest1290-21dbus-daemon11:50:000
2360475992317,4cyclictest0-21swapper/011:25:020
2360475992313,9cyclictest2464436-21aten2.4-expect08:30:530
2360475992310,8cyclictest2593890-21kthreadcore10:01:000
2360477992219,1cyclictest0-21swapper/211:55:012
236047699229,4cyclictest0-21swapper/109:41:011
2360476992219,2cyclictest0-21swapper/109:10:021
2360476992210,3cyclictest2660468-21kthreadcore10:45:581
236047599229,12cyclictest2577597-21kthreadcore09:50:590
2360475992217,4cyclictest3827634-1atopacctd08:20:000
2360475992217,4cyclictest1326-21systemd-logind07:30:010
2360475992216,5cyclictest3880722-21gmain07:50:010
2360475992216,5cyclictest2529246-21systemd09:20:000
2360475992216,5cyclictest1-21systemd11:55:010
2360475992213,8cyclictest2502223-21aten2.4-expect09:00:510
2360475992211,7cyclictest2388589-21aten_repower_fr07:30:520
2360475992210,8cyclictest2828270-21latency12:36:020
2360475992210,8cyclictest0-21swapper/012:03:330
2360476992118,2cyclictest2785322-21systemd-run12:10:021
2360476992117,3cyclictest2492483-21kthreadcore08:51:001
2360476992117,3cyclictest2484685-21kthreadcore08:45:581
2360476992115,5cyclictest2395560-21gltestperf07:35:561
236047599219,8cyclictest2542373-21pmu-power09:26:030
236047599218,8cyclictest0-21swapper/009:56:020
236047599214,8cyclictest2582313-21kworker/u16:0+nfsiod10:25:580
236047599214,15cyclictest2782279-21cut12:06:000
2360475992116,4cyclictest2360465-21cyclictest10:10:010
2360475992116,4cyclictest0-21swapper/010:30:020
2360475992115,5cyclictest2794664-21cut12:15:570
2360475992115,5cyclictest2367306-21kthreadcore07:15:020
2360475992115,5cyclictest2367306-21kthreadcore07:15:020
2360475992115,5cyclictest0-21swapper/009:00:010
2360475992114,5cyclictest0-21swapper/010:40:560
2360475992112,4cyclictest2676477-21kthreadcore10:55:590
236047599211,10cyclictest1810227-1atop09:40:010
2360475992110,10cyclictest2375785-21aten2.4-expect07:20:520
236047599210,19cyclictest0-21swapper/010:16:170
2649091200,2phc2sys0-21swapper/307:22:143
236047799207,5cyclictest0-21swapper/212:40:012
236047699209,2cyclictest0-21swapper/112:35:011
2360476992017,2cyclictest2830436-21grep12:40:011
2360476992017,2cyclictest2721196-21kthreadcore11:26:001
2360476992017,2cyclictest2650772-21cpuspeed_turbos10:40:541
2360476992017,2cyclictest2408686-21kthreadcore07:45:571
2360476992016,3cyclictest1290-21dbus-daemon11:05:011
2360476992015,3cyclictest2680110-21systemd-run11:00:011
2360476992011,2cyclictest2469960-21kworker/u16:2-ext4-rsv-conversion09:20:011
236047599209,5cyclictest2766068-21kthreadcore11:55:590
236047599208,8cyclictest0-21swapper/009:10:570
236047599208,11cyclictest2740817-21tail11:40:540
236047599203,9cyclictest2623327-21kthreadcore10:20:570
2360475992014,5cyclictest2435998-21kthreadcore08:05:580
2360475992014,5cyclictest2375469-21munin-plugin-st07:20:020
236047599201,15cyclictest2738962-21ssh11:36:310
236047599201,10cyclictest0-21swapper/007:55:540
2360475992010,9cyclictest2730275-21kthreadcore11:30:590
2360475992010,9cyclictest0-21swapper/012:20:520
236047599200,4cyclictest2669435-21tr10:50:580
236047599200,15cyclictest2483357-21/usr/sbin/munin08:45:530
2360477991914,3cyclictest2565121-21chrt09:41:062
236047699196,3cyclictest0-21swapper/110:35:521
2360476991916,2cyclictest2728447-21kthreadcore11:30:571
2360476991916,2cyclictest2605224-21/usr/sbin/munin10:11:021
2360476991916,2cyclictest2585373-21kthreadcore09:56:001
2360476991916,2cyclictest2452835-21kthreadcore08:20:591
2360476991916,2cyclictest2401839-21gltestperf07:40:551
2360476991916,2cyclictest2401839-21gltestperf07:40:551
2360476991915,3cyclictest2498720-21kthreadcore08:56:001
2360476991915,3cyclictest2367178-21kthreadcore07:15:021
2360476991915,3cyclictest2367178-21kthreadcore07:15:021
2360476991914,4cyclictest2809937-21kthreadcore12:25:571
2360476991911,3cyclictest0-21swapper/109:29:471
2360476991910,2cyclictest2747282-21kworker/u16:1-events_power_efficient12:25:001
236047599199,9cyclictest2642753-21runrttasks10:35:160
236047599199,9cyclictest2548860-21kthreadcore09:30:580
236047599195,9cyclictest2401139-21apt-get07:40:510
236047599195,9cyclictest2401139-21apt-get07:40:510
236047599193,7cyclictest0-21swapper/012:10:560
2360475991913,5cyclictest2479956-21kthreadcore08:40:580
2360475991913,5cyclictest2444864-21latency_hist08:15:010
236047599190,8cyclictest2461823-21kthreadcore08:25:570
2649191180,3ptp4l0-21swapper/308:46:043
2649091181,4phc2sys0-21swapper/312:35:523
2649091180,2phc2sys0-21swapper/310:30:153
2360477991814,1cyclictest0-21swapper/209:50:532
236047699184,5cyclictest2426513-21aten2.4-expect08:00:521
2360476991815,2cyclictest3824565-21in:imuxsock07:53:441
2360476991815,2cyclictest2691185-21kthreadcore11:05:581
2360476991815,2cyclictest2642418-21apt-key10:35:011
2360476991815,2cyclictest2615374-21kthreadcore10:15:581
2360476991815,2cyclictest2599271-21kthreadcore10:05:571
2360476991815,2cyclictest2592850-21kthreadcore10:01:001
2360476991815,2cyclictest2444361-21timerwakeupswit08:11:051
2360476991815,2cyclictest2437882-21mailstats08:06:021
2360476991815,2cyclictest1290-21dbus-daemon09:05:011
2360476991814,3cyclictest2738194-21wc11:36:031
2360476991814,3cyclictest2480364-21kthreadcore08:40:581
2360476991814,3cyclictest2423073-21kthreadcore07:55:591
2360476991814,3cyclictest2370526-21irqrtprio07:15:541
2360476991814,3cyclictest0-21swapper/108:30:011
2360476991810,3cyclictest0-21swapper/109:45:531
236047599185,8cyclictest2567232-21apt-get09:45:520
2360475991813,4cyclictest2397713-21kthreadcore07:36:000
236047599181,12cyclictest2508321-21sshd09:05:480
236047599181,12cyclictest2360472-21munin-run07:10:010
236047599180,13cyclictest2494811-21python308:51:040
236047599180,10cyclictest0-21swapper/010:11:010
2649091171,4phc2sys0-21swapper/307:15:493
236047799176,6cyclictest0-21swapper/210:20:012
2360477991715,1cyclictest0-21swapper/209:30:512
2360477991715,1cyclictest0-21swapper/208:45:022
2360477991714,1cyclictest0-21swapper/212:15:552
2360477991714,1cyclictest0-21swapper/211:15:592
2360477991714,1cyclictest0-21swapper/211:05:542
2360477991714,1cyclictest0-21swapper/210:46:042
2360477991714,1cyclictest0-21swapper/209:25:002
2360477991714,1cyclictest0-21swapper/209:05:012
2360477991714,1cyclictest0-21swapper/208:25:552
2360477991714,1cyclictest0-21swapper/208:16:062
2360477991714,1cyclictest0-21swapper/207:45:542
2360477991714,1cyclictest0-21swapper/207:45:002
2360477991714,1cyclictest0-21swapper/207:45:002
2360477991714,1cyclictest0-21swapper/207:35:582
2360477991713,2cyclictest0-21swapper/209:11:222
2360476991715,1cyclictest1290-21dbus-daemon09:15:011
2360476991714,2cyclictest2770732-21aten_repower_fr12:00:501
2360476991714,2cyclictest2708121-21kthreadcore11:16:011
2360476991714,2cyclictest2698697-21kthreadcore11:11:001
236047599171,5cyclictest2451601-21head08:20:530
236047599171,15cyclictest0-21swapper/008:00:590
2649091161,2phc2sys0-21swapper/311:29:553
2649091160,2phc2sys0-21swapper/308:51:063
2649091160,1phc2sys0-21swapper/309:52:303
236047799166,4cyclictest0-21swapper/210:40:012
236047799163,6cyclictest0-21swapper/209:10:012
2360477991614,1cyclictest0-21swapper/212:05:572
2360477991614,1cyclictest0-21swapper/211:30:562
2360477991614,1cyclictest0-21swapper/210:50:552
2360477991614,1cyclictest0-21swapper/210:26:012
2360477991614,1cyclictest0-21swapper/210:11:002
2360477991614,1cyclictest0-21swapper/208:32:462
2360477991613,1cyclictest0-21swapper/212:30:532
2360477991613,1cyclictest0-21swapper/212:28:092
2360477991613,1cyclictest0-21swapper/212:20:522
2360477991613,1cyclictest0-21swapper/211:56:022
2360477991613,1cyclictest0-21swapper/211:45:012
2360477991613,1cyclictest0-21swapper/210:32:312
2360477991613,1cyclictest0-21swapper/210:21:282
2360477991613,1cyclictest0-21swapper/210:05:582
2360477991613,1cyclictest0-21swapper/207:55:512
2360477991613,1cyclictest0-21swapper/207:50:562
2360477991613,1cyclictest0-21swapper/207:31:022
2360477991613,1cyclictest0-21swapper/207:21:032
236047699166,3cyclictest0-21swapper/111:44:471
2360476991613,2cyclictest3840882-21snmpd07:25:001
2360476991613,2cyclictest2450644-21timerwakeupswit08:16:061
2360476991613,2cyclictest1290-21dbus-daemon07:35:011
2360476991613,2cyclictest0-21swapper/108:35:531
2649091150,3phc2sys0-21swapper/312:04:573
2649091150,2phc2sys0-21swapper/309:14:553
2649091150,1phc2sys0-21swapper/310:12:193
2649091150,1phc2sys0-21swapper/308:28:543
2360477991513,1cyclictest0-21swapper/211:25:532
2360477991513,1cyclictest0-21swapper/211:20:552
2360477991513,1cyclictest0-21swapper/211:11:002
2360477991513,1cyclictest0-21swapper/208:50:022
2360477991512,1cyclictest0-21swapper/211:50:002
2360477991512,1cyclictest0-21swapper/211:05:012
2360477991512,1cyclictest0-21swapper/210:01:572
2360477991512,1cyclictest0-21swapper/209:55:562
2360477991512,1cyclictest0-21swapper/209:46:012
2360477991512,1cyclictest0-21swapper/208:40:012
2360477991511,2cyclictest0-21swapper/209:39:442
2360477991510,2cyclictest24565442sleep208:21:032
2649091144,2phc2sys0-21swapper/310:20:573
2649091143,2phc2sys0-21swapper/311:41:333
2649091140,3phc2sys0-21swapper/310:18:423
2649091140,2phc2sys0-21swapper/311:22:053
2649091140,2phc2sys0-21swapper/310:54:323
2649091140,2phc2sys0-21swapper/310:49:303
2649091140,2phc2sys0-21swapper/310:07:353
2649091140,2phc2sys0-21swapper/308:21:523
2649091140,2phc2sys0-21swapper/307:50:113
2649091140,1phc2sys0-21swapper/311:55:123
236047799144,5cyclictest0-21swapper/209:30:012
2360477991412,1cyclictest0-21swapper/210:56:012
2360477991412,1cyclictest0-21swapper/209:20:012
2360477991412,1cyclictest0-21swapper/208:51:052
2360477991412,1cyclictest0-21swapper/208:10:582
2360477991412,1cyclictest0-21swapper/207:10:012
2360477991411,1cyclictest0-21swapper/208:01:042
2360477991411,1cyclictest0-21swapper/207:25:522
2360477991410,2cyclictest0-21swapper/212:04:362
236047799140,11cyclictest2733102-21chrt11:35:382
236047799140,11cyclictest2501432-21chrt08:56:572
2360476991412,1cyclictest0-21swapper/107:10:021
2649091131,6phc2sys0-21swapper/311:45:513
2649091130,3phc2sys0-21swapper/311:05:503
2649091130,2phc2sys0-21swapper/312:08:473
2649091130,2phc2sys0-21swapper/311:50:373
2649091130,2phc2sys0-21swapper/309:30:183
2649091130,1phc2sys0-21swapper/311:36:403
2360477991311,1cyclictest0-21swapper/210:45:002
2360477991311,1cyclictest0-21swapper/207:15:542
2360477991311,1cyclictest0-21swapper/207:10:542
2360477991311,1cyclictest0-21swapper/207:10:542
2649091122,2phc2sys0-21swapper/309:37:353
2649091121,5phc2sys0-21swapper/308:35:523
2649091121,3phc2sys0-21swapper/312:25:503
2649091121,2phc2sys0-21swapper/309:10:023
2649091120,2phc2sys0-21swapper/312:23:023
2649091120,2phc2sys0-21swapper/311:18:333
2649091120,2phc2sys0-21swapper/309:42:283
2649091120,2phc2sys0-21swapper/308:00:573
2649091120,1phc2sys0-21swapper/312:31:073
2649091120,1phc2sys0-21swapper/307:45:143
2649091120,1phc2sys0-21swapper/307:10:483
2649091120,1phc2sys0-21swapper/307:10:483
2649091111,4phc2sys0-21swapper/312:15:513
2649091111,4phc2sys0-21swapper/312:10:493
2649091111,2phc2sys0-21swapper/311:10:513
2649091111,2phc2sys0-21swapper/310:56:003
2649091111,2phc2sys0-21swapper/309:46:293
2649091111,2phc2sys0-21swapper/309:25:573
2649091110,4phc2sys0-21swapper/311:30:503
2649091110,2phc2sys0-21swapper/307:06:063
2649091110,1phc2sys0-21swapper/308:34:233
2649091102,2phc2sys0-21swapper/310:00:283
2649091101,2phc2sys0-21swapper/310:25:223
2649091101,2phc2sys0-21swapper/308:05:583
2649091100,2phc2sys0-21swapper/310:40:413
2649091100,2phc2sys0-21swapper/310:37:483
2649091100,2phc2sys0-21swapper/309:55:513
2649091100,2phc2sys0-21swapper/309:20:163
2649091100,2phc2sys0-21swapper/308:45:013
2649091100,2phc2sys0-21swapper/308:16:083
2649091100,2phc2sys0-21swapper/308:13:233
2649091100,2phc2sys0-21swapper/307:55:483
264909191,3phc2sys0-21swapper/309:05:013
264909191,2phc2sys0-21swapper/307:26:023
264909190,2phc2sys0-21swapper/307:41:013
264909190,2phc2sys0-21swapper/307:41:013
264909190,2phc2sys0-21swapper/307:35:523
264909190,2phc2sys0-21swapper/307:30:513
264909180,2phc2sys0-21swapper/308:55:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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