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2025-12-22 - 15:09
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Mon Dec 22, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1034526950,8sleep00-21swapper/007:06:090
1037826750,9sleep10-21swapper/107:06:301
209452660,0sleep10-21swapper/108:59:571
10888993333,0cyclictest0-21swapper/111:27:441
10887993010,19cyclictest0-21swapper/008:01:040
10888992710,0cyclictest0-21swapper/109:05:161
10887992626,0cyclictest0-21swapper/007:14:380
10887992620,5cyclictest20712-21apache207:48:590
87802250,1sleep00-21swapper/009:50:150
10887992525,0cyclictest0-21swapper/010:06:130
1318622410,0sleep10-21swapper/107:15:141
1088899242,3cyclictest0-21swapper/110:55:211
10888992422,1cyclictest636-21nscd08:30:171
1088799247,1cyclictest0-21swapper/010:26:360
10887992423,0cyclictest7-21ksoftirqd/008:55:180
1088899239,6cyclictest20732-21apache211:50:111
1088899236,8cyclictest0-21swapper/107:55:101
1088899235,10cyclictest0-21swapper/110:50:091
1088899233,9cyclictest0-21swapper/108:15:121
10888992310,9cyclictest0-21swapper/109:35:591
1088899230,17cyclictest0-21swapper/110:38:091
10887992313,5cyclictest0-21swapper/009:20:130
1088899226,12cyclictest0-21swapper/108:00:061
10888992210,4cyclictest0-21swapper/110:20:121
1088799225,8cyclictest0-21swapper/012:20:130
1088799222,8cyclictest0-21swapper/010:02:410
10887992218,2cyclictest81ktimersoftd/011:35:110
10887992217,3cyclictest20732-21apache211:05:030
1088899217,8cyclictest0-21swapper/112:35:121
1088899216,14cyclictest0-21swapper/109:25:101
1088899214,4cyclictest0-21swapper/107:40:091
1088899213,13cyclictest0-21swapper/109:00:131
10888992118,2cyclictest3321-21/usr/sbin/munin12:30:181
10888992115,5cyclictest20712-21apache208:08:471
1088899211,11cyclictest19005-21latency_hist08:54:571
10888992110,8cyclictest0-21swapper/112:17:211
10888992110,5cyclictest0-21swapper/108:35:221
10888992110,4cyclictest0-21swapper/109:45:151
1088799215,8cyclictest0-21swapper/007:50:090
1088799213,12cyclictest0-21swapper/007:15:110
10887992111,6cyclictest100250irq/107-eth1-rx08:05:200
10887992110,6cyclictest0-21swapper/012:10:350
10887992110,4cyclictest0-21swapper/012:35:110
10887992110,4cyclictest0-21swapper/009:55:160
24822200,1sleep00-21swapper/009:35:090
10888992010,5cyclictest0-21swapper/107:34:581
10888992010,4cyclictest0-21swapper/107:10:161
1088799207,10cyclictest0-21swapper/008:10:160
1088799205,13cyclictest0-21swapper/008:45:180
10887992020,0cyclictest0-21swapper/011:47:150
10887992018,1cyclictest167-21systemd-journal09:29:570
10887992010,5cyclictest0-21swapper/009:10:110
10887992010,3cyclictest0-21swapper/011:15:100
10887992010,3cyclictest0-21swapper/007:55:100
10887992010,2cyclictest0-21swapper/007:42:170
1088899194,9cyclictest0-21swapper/112:20:111
1088899193,10cyclictest0-21swapper/108:25:141
10888991910,5cyclictest0-21swapper/112:00:161
10888991910,5cyclictest0-21swapper/109:55:111
10888991910,4cyclictest0-21swapper/107:45:161
10888991910,3cyclictest0-21swapper/110:12:081
1088899190,4cyclictest0-21swapper/111:55:181
1088799194,8cyclictest0-21swapper/008:25:130
1088799194,13cyclictest0-21swapper/010:20:150
1088799193,9cyclictest0-21swapper/010:40:180
1088799191,11cyclictest0-21swapper/010:30:100
10887991910,8cyclictest0-21swapper/012:15:150
10887991910,3cyclictest0-21swapper/010:45:140
10887991910,3cyclictest0-21swapper/008:40:110
1088799190,7cyclictest0-21swapper/011:31:560
292621810,0sleep00-21swapper/012:27:390
2164721814,3sleep021774-21/usr/sbin/munin11:50:100
1088899186,5cyclictest0-21swapper/110:00:171
1088899183,10cyclictest0-21swapper/112:10:141
1088899183,10cyclictest0-21swapper/108:40:151
1088899181,7cyclictest0-21swapper/107:50:151
1088899181,5cyclictest0-21swapper/110:47:321
10888991810,7cyclictest0-21swapper/109:20:091
10888991810,5cyclictest20712-21apache211:05:171
10888991810,4cyclictest0-21swapper/111:35:121
10888991810,3cyclictest0-21swapper/111:45:201
10888991810,3cyclictest0-21swapper/110:15:181
10888991810,2cyclictest0-21swapper/109:10:081
1088899180,5cyclictest0-21swapper/110:25:101
1088899180,10cyclictest0-21swapper/112:25:091
1088799186,4cyclictest12549-21/usr/sbin/munin11:25:130
1088799182,9cyclictest0-21swapper/009:15:170
10887991818,0cyclictest0-21swapper/007:35:120
10887991811,2cyclictest0-21swapper/008:15:160
10887991810,5cyclictest100150irq/106-eth1-rx08:30:100
10887991810,5cyclictest0-21swapper/011:14:030
10887991810,4cyclictest0-21swapper/009:05:160
10887991810,4cyclictest0-21swapper/008:35:140
10887991810,1cyclictest0-21swapper/011:58:240
1088899178,5cyclictest9644-21dump-pmu-power09:54:571
1088899175,3cyclictest15816-21/usr/sbin/munin08:45:131
1088899175,11cyclictest0-21swapper/111:00:151
1088899174,7cyclictest0-21swapper/108:20:101
1088899172,9cyclictest0-21swapper/110:40:161
10888991710,4cyclictest0-21swapper/111:40:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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