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2026-09-21 - 17:26
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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 highest latencies:
System rackcslot2.osadl.org (updated Mon Sep 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3094427057,8sleep10-21swapper/107:06:161
3066326451,8sleep00-21swapper/007:03:190
304212500,0sleep03127799cyclictest11:06:130
3127899290,18cyclictest26064-21kworker/u4:112:10:271
31277992928,1cyclictest0-21swapper/012:06:590
31278992828,0cyclictest0-21swapper/112:36:441
31278992710,11cyclictest0-21swapper/109:30:171
31277992710,16cyclictest0-21swapper/011:21:020
31277992710,10cyclictest0-21swapper/009:35:350
31278992618,3cyclictest8729-21apache212:27:101
31278992610,9cyclictest0-21swapper/111:25:261
31278992610,1cyclictest0-21swapper/109:24:161
3127899260,1cyclictest0-21swapper/110:55:151
31277992620,5cyclictest8703-21apache210:29:250
31277992610,8cyclictest0-21swapper/009:29:290
31278992517,4cyclictest8729-21apache210:06:101
31278992510,5cyclictest0-21swapper/112:28:101
3127899250,24cyclictest0-21swapper/111:10:021
31277992524,1cyclictest0-21swapper/012:12:200
31277992523,1cyclictest8373-21grep10:33:100
3127799252,2cyclictest0-21swapper/010:01:420
3127899247,4cyclictest12797-21diskmemload11:13:101
3127899244,19cyclictest0-21swapper/111:53:131
31278992419,4cyclictest8703-21apache210:28:081
31278992410,1cyclictest0-21swapper/109:48:541
31278992410,11cyclictest0-21swapper/109:46:571
31277992410,8cyclictest0-21swapper/007:48:080
3127899235,11cyclictest0-21swapper/108:08:051
3127899233,2cyclictest0-21swapper/109:12:331
31278992321,1cyclictest0-21swapper/107:53:091
31278992317,5cyclictest8703-21apache212:19:241
31278992310,5cyclictest31275-21cyclictest11:47:501
31278992310,0cyclictest0-21swapper/107:38:051
3127799232,2cyclictest0-21swapper/009:09:570
31277992310,6cyclictest0-21swapper/009:51:040
31277992310,5cyclictest0-21swapper/009:53:010
31277992310,5cyclictest0-21swapper/008:48:030
31277992310,3cyclictest0-21swapper/010:43:030
3127799230,1cyclictest23474-21cat11:43:040
3127799230,1cyclictest0-21swapper/010:58:010
3127899226,8cyclictest0-21swapper/107:28:071
31278992210,1cyclictest0-21swapper/111:22:031
31278992210,1cyclictest0-21swapper/108:29:571
31278992210,11cyclictest0-21swapper/109:19:011
3127899220,1cyclictest0-21swapper/111:40:341
3127799223,12cyclictest23971-21wget09:23:030
31277992218,3cyclictest24479-21snmpd12:36:240
31277992218,2cyclictest81ktimersoftd/007:43:110
31277992216,4cyclictest0-21swapper/012:26:240
31277992210,6cyclictest0-21swapper/012:20:510
31277992210,6cyclictest0-21swapper/011:23:170
31277992210,2cyclictest0-21swapper/007:08:070
3127899215,9cyclictest0-21swapper/109:13:131
3127899214,9cyclictest12797-21diskmemload11:48:021
3127899212,9cyclictest0-21swapper/107:58:011
31278992120,1cyclictest32663-21apache_accesses10:23:011
31278992113,4cyclictest0-21swapper/107:33:041
31278992113,2cyclictest0-21swapper/110:01:041
3127899211,12cyclictest22441-21apache_processe10:08:021
31278992110,6cyclictest0-21swapper/111:02:561
3127799216,10cyclictest0-21swapper/007:53:090
3127799213,7cyclictest0-21swapper/010:23:090
3127799212,2cyclictest0-21swapper/011:08:020
31277992118,3cyclictest16277-21apache207:26:530
31277992115,5cyclictest770-21irqbalance10:47:510
31277992111,6cyclictest636-21nscd07:28:080
31277992110,3cyclictest0-21swapper/008:23:060
31277992110,1cyclictest0-21swapper/010:09:330
3127799210,2cyclictest0-21swapper/012:28:040
3127799210,10cyclictest0-21swapper/007:18:090
1284822110,0sleep10-21swapper/110:40:071
3127899205,12cyclictest0-21swapper/110:48:021
3127899202,11cyclictest0-21swapper/108:38:131
31278992018,1cyclictest8980-21lockfile-create08:57:501
31278992018,1cyclictest8703-21apache209:55:251
31278992018,1cyclictest0-21swapper/108:48:081
31278992016,3cyclictest8703-21apache211:27:551
3127899201,0cyclictest12797-21diskmemload12:13:101
3127899200,3cyclictest0-21swapper/112:04:361
3127799206,9cyclictest0-21swapper/009:18:040
3127799204,2cyclictest0-21swapper/010:16:040
31277992011,5cyclictest12790-21latency_hist09:07:500
31277992011,4cyclictest0-21swapper/007:58:010
31277992010,9cyclictest0-21swapper/008:08:060
31277992010,4cyclictest0-21swapper/010:18:030
31277992010,1cyclictest0-21swapper/011:28:470
3127899195,7cyclictest4681-21apache_processe07:23:021
3127899195,7cyclictest0-21swapper/111:58:021
3127899194,9cyclictest0-21swapper/107:18:121
3127899193,3cyclictest0-21swapper/108:13:021
3127899193,10cyclictest0-21swapper/107:43:041
31278991917,2cyclictest24637-21kworker/1:010:22:421
31278991910,4cyclictest0-21swapper/110:59:481
31278991910,4cyclictest0-21swapper/110:43:311
31278991910,4cyclictest0-21swapper/110:35:241
31278991910,4cyclictest0-21swapper/108:58:061
31278991910,1cyclictest0-21swapper/110:13:271
3127899190,10cyclictest167-21systemd-journal08:03:271
3127799196,5cyclictest0-21swapper/007:33:020
3127799195,9cyclictest0-21swapper/011:38:060
3127799195,6cyclictest0-21swapper/008:33:030
3127799193,8cyclictest3549-21ls11:13:100
3127799193,7cyclictest0-21swapper/007:38:080
3127799192,9cyclictest6314-21grep09:43:110
31277991910,4cyclictest0-21swapper/010:03:020
31277991910,2cyclictest0-21swapper/011:51:180
31277991910,2cyclictest0-21swapper/009:16:560
31277991910,1cyclictest0-21swapper/011:56:570
290121910,0sleep00-21swapper/008:40:190
392621810,0sleep00-21swapper/009:40:240
3127899182,6cyclictest14593-21/usr/sbin/munin07:48:091
31278991818,0cyclictest0-21swapper/108:34:151
31278991810,0cyclictest0-21swapper/109:35:501
3127799185,3cyclictest0-21swapper/010:38:070
3127799184,8cyclictest0-21swapper/008:53:080
3127799184,0cyclictest0-21swapper/011:34:210
3127799183,10cyclictest0-21swapper/008:03:060
3127799181,9cyclictest21038-21cpuspeed_turbos10:53:030
31277991812,1cyclictest29938-21/usr/sbin/munin08:28:070
31277991810,4cyclictest0-21swapper/008:13:050
31277991810,1cyclictest0-21swapper/008:18:070
31277991810,0cyclictest0-21swapper/008:58:230
1273421810,0sleep00-21swapper/012:13:250
3127899176,5cyclictest0-21swapper/108:18:051
3127899173,9cyclictest0-21swapper/109:03:041
3127899173,6cyclictest0-21swapper/109:38:051
3127899170,8cyclictest1093-21cut07:13:031
3127899170,5cyclictest0-21swapper/108:23:031
3127899170,11cyclictest31895-21/usr/sbin/munin07:08:061
31277991710,2cyclictest0-21swapper/011:59:300
31277991710,1cyclictest0-21swapper/007:15:590
501021610,2sleep10-21swapper/108:47:251
3127899161,6cyclictest1199-21runrttasks11:33:471
31277991610,1cyclictest0-21swapper/008:43:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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