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2026-09-14 - 04:04
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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 rackcslot2.osadl.org (updated Mon Sep 14, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3059229054,8sleep10-21swapper/119:04:101
3095227357,8sleep00-21swapper/019:07:530
31133993210,21cyclictest0-21swapper/022:26:080
31133993110,18cyclictest0-21swapper/021:26:560
31133992910,14cyclictest0-21swapper/020:28:070
3113499280,1cyclictest0-21swapper/123:15:121
31134992718,9cyclictest19838-21kworker/1:122:51:161
31133992727,0cyclictest0-21swapper/021:40:430
31133992710,0cyclictest0-21swapper/022:51:230
3113399270,25cyclictest0-21swapper/022:28:100
31134992622,2cyclictest14092-21apache200:25:521
31134992610,2cyclictest0-21swapper/121:21:241
31134992610,1cyclictest0-21swapper/100:17:001
31134992510,5cyclictest0-21swapper/122:06:091
31134992510,11cyclictest0-21swapper/122:23:541
31133992523,1cyclictest0-21swapper/023:32:260
31133992518,6cyclictest14066-21apache222:36:420
3113399250,12cyclictest0-21swapper/020:48:160
31134992422,1cyclictest636-21nscd00:18:591
3113499241,9cyclictest0-21swapper/120:18:101
31134992416,6cyclictest611-21systemd-logind00:34:591
31134992410,7cyclictest0-21swapper/123:38:591
31134992410,7cyclictest0-21swapper/100:04:441
31134992410,0cyclictest0-21swapper/122:12:021
3113499240,5cyclictest0-21swapper/121:57:061
31133992424,0cyclictest0-21swapper/000:22:030
31133992415,6cyclictest14092-21apache223:22:140
31133992411,8cyclictest12331-21diskmemload23:44:490
31133992410,5cyclictest0-21swapper/022:40:050
31133992410,5cyclictest0-21swapper/021:03:090
31134992322,1cyclictest0-21swapper/123:59:251
3113499230,1cyclictest0-21swapper/122:36:391
3113399231,1cyclictest0-21swapper/000:35:330
31133992310,9cyclictest0-21swapper/023:50:090
31133992310,2cyclictest0-21swapper/021:14:240
31134992222,0cyclictest0-21swapper/121:01:311
31134992214,4cyclictest0-21swapper/122:43:111
3113499221,18cyclictest12331-21diskmemload23:31:141
31134992210,3cyclictest0-21swapper/119:23:051
31134992210,1cyclictest0-21swapper/121:08:391
31133992219,2cyclictest14092-21apache221:30:520
31133992216,4cyclictest14092-21apache219:36:230
3113399221,4cyclictest0-21swapper/023:07:590
3113399221,16cyclictest9598-1kworker/u5:222:43:060
31133992210,8cyclictest0-21swapper/023:23:040
31133992210,8cyclictest0-21swapper/021:58:260
31133992210,11cyclictest0-21swapper/020:55:160
613222110,0sleep00-21swapper/000:03:570
3113499214,9cyclictest0-21swapper/122:18:121
3113499214,12cyclictest0-21swapper/119:33:051
31134992119,1cyclictest14092-21apache221:13:121
31134992117,2cyclictest32159-21sh23:54:521
31134992115,4cyclictest14092-21apache200:10:101
3113499211,19cyclictest0-21swapper/123:24:561
31134992110,5cyclictest0-21swapper/121:38:251
31134992110,4cyclictest0-21swapper/120:17:401
31134992110,11cyclictest19838-21kworker/1:121:49:161
3113399216,7cyclictest27600-21/usr/sbin/munin20:23:070
3113399215,15cyclictest0-21swapper/023:55:150
3113399213,11cyclictest0-21swapper/023:58:150
31133992119,1cyclictest23554-21ssh22:55:570
31133992116,5cyclictest14066-21apache200:16:140
31133992110,6cyclictest0-21swapper/021:46:240
31133992110,2cyclictest0-21swapper/022:20:430
31133992110,10cyclictest0-21swapper/021:09:350
3113499206,11cyclictest0-21swapper/120:43:121
3113499205,8cyclictest0-21swapper/119:08:091
3113499203,10cyclictest8256-21runrttasks21:47:541
3113499201,6cyclictest0-21swapper/122:58:221
31134992010,5cyclictest0-21swapper/119:53:041
31134992010,4cyclictest0-21swapper/122:53:051
31134992010,3cyclictest0-21swapper/119:13:061
31134992010,1cyclictest0-21swapper/120:48:091
31134992010,0cyclictest0-21swapper/123:33:181
3113499200,9cyclictest0-21swapper/123:18:131
3113499200,11cyclictest0-21swapper/122:29:091
3113499200,11cyclictest0-21swapper/119:58:091
3113399205,6cyclictest636-21nscd21:34:280
3113399204,10cyclictest0-21swapper/023:13:150
3113399203,9cyclictest0-21swapper/019:58:160
31133992019,1cyclictest81ktimersoftd/000:10:490
31133992019,0cyclictest0-21swapper/020:38:120
31133992016,3cyclictest14092-21apache222:15:550
3113399201,18cyclictest14092-21apache219:56:220
31133992010,5cyclictest0-21swapper/022:58:120
31133992010,3cyclictest0-21swapper/019:48:440
3113399200,18cyclictest0-21swapper/023:34:560
3113399200,16cyclictest28758-21irqstats23:03:100
1027722010,1sleep10-21swapper/119:38:001
3113499194,9cyclictest0-21swapper/121:28:061
31134991913,4cyclictest7664-21sendmail_mailqu20:53:131
3113499191,17cyclictest19924-21/usr/sbin/munin20:03:071
31134991910,6cyclictest0-21swapper/122:38:081
31134991910,5cyclictest0-21swapper/123:43:061
31134991910,5cyclictest0-21swapper/123:08:111
3113499190,18cyclictest19838-21kworker/1:121:26:041
31133991918,0cyclictest0-21swapper/022:05:300
31133991912,2cyclictest0-21swapper/023:42:250
31133991910,3cyclictest0-21swapper/021:18:090
31133991910,3cyclictest0-21swapper/020:08:110
31133991910,3cyclictest0-21swapper/000:26:530
31133991910,0cyclictest0-21swapper/021:53:140
3113399190,3cyclictest0-21swapper/019:42:540
996821810,2sleep00-21swapper/020:58:270
3113499185,7cyclictest0-21swapper/121:33:121
3113499184,9cyclictest22639-21/usr/sbin/munin20:08:131
3113499183,8cyclictest0-21swapper/119:18:151
31134991816,1cyclictest28626-21swap20:23:131
31134991812,4cyclictest14066-21apache219:43:261
31134991810,5cyclictest0-21swapper/119:48:121
31134991810,4cyclictest0-21swapper/123:03:161
31134991810,4cyclictest0-21swapper/121:59:311
3113399189,5cyclictest4510-21seq20:46:320
3113399183,13cyclictest0-21swapper/019:43:060
3113399182,9cyclictest0-21swapper/019:13:070
31133991817,0cyclictest0-21swapper/000:31:440
31133991810,3cyclictest0-21swapper/019:18:060
2535621810,1sleep00-21swapper/020:16:250
3113499173,9cyclictest0-21swapper/120:38:141
31134991716,1cyclictest802-21apache219:28:551
31134991715,1cyclictest30168-21sed20:28:111
31134991710,0cyclictest0-21swapper/123:48:041
31133991710,6cyclictest0-21swapper/019:24:240
31133991710,4cyclictest0-21swapper/022:08:060
31133991710,3cyclictest0-21swapper/021:50:080
31133991710,1cyclictest0-21swapper/019:28:100
31134991614,1cyclictest636-21nscd22:13:081
31134991611,5cyclictest19838-21kworker/1:121:05:161
31134991611,2cyclictest0-21swapper/100:28:361
31134991610,2cyclictest0-21swapper/120:33:051
31133991615,1cyclictest0-21swapper/020:37:380
31133991610,5cyclictest0-21swapper/019:10:090
31133991610,0cyclictest0-21swapper/020:19:480
31133991510,2cyclictest0-21swapper/020:03:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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