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2025-12-06 - 13:30
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Sat Dec 06, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2235921200,1sleep1133199cyclictest00:14:501
67626956,8sleep00-21swapper/019:02:420
104226957,8sleep10-21swapper/119:06:131
21022650,0sleep10-21swapper/122:16:551
124662650,2sleep1133199cyclictest22:31:121
147542420,0sleep114758-21cat00:02:001
1330993110,5cyclictest0-21swapper/021:27:420
1331992928,1cyclictest24-21ksoftirqd/121:26:401
1331992825,2cyclictest0-21swapper/100:01:311
1331992725,1cyclictest12456-21kworker/u4:223:42:411
1331992710,17cyclictest0-21swapper/100:08:191
133099272,20cyclictest0-21swapper/022:39:330
1331992616,9cyclictest14894-21diskmemload22:15:161
1331992522,2cyclictest1252-21apache223:18:411
1331992522,2cyclictest1241-21apache221:27:041
1331992519,5cyclictest795-21sendmail-mta20:06:141
1331992516,5cyclictest14894-21diskmemload21:56:561
1331992510,0cyclictest0-21swapper/121:40:111
133199250,22cyclictest0-21swapper/123:05:121
133199250,20cyclictest0-21swapper/121:19:161
1330992510,5cyclictest0-21swapper/021:36:200
1331992422,1cyclictest1252-21apache223:50:211
133099246,17cyclictest0-21swapper/019:56:340
133099242,3cyclictest0-21swapper/023:46:290
1330992421,2cyclictest1241-21apache219:51:400
1330992417,4cyclictest1252-21apache222:11:140
1330992416,6cyclictest1241-21apache221:42:510
1331992314,3cyclictest0-21swapper/120:01:401
1331992313,9cyclictest1241-21apache220:26:541
1331992310,6cyclictest0-21swapper/123:11:541
1331992310,12cyclictest0-21swapper/121:53:041
1331992310,12cyclictest0-21swapper/121:53:041
133099236,16cyclictest0-21swapper/020:30:450
133099230,3cyclictest0-21swapper/021:10:270
133099230,1cyclictest0-21swapper/020:21:210
1331992212,3cyclictest0-21swapper/121:33:061
1331992210,9cyclictest0-21swapper/119:27:011
1331992210,10cyclictest0-21swapper/119:31:581
133199220,19cyclictest7728-21/usr/sbin/munin23:52:031
133099227,11cyclictest0-21swapper/023:37:010
133099223,9cyclictest0-21swapper/019:11:590
133099223,12cyclictest0-21swapper/019:16:570
133099222,19cyclictest21318-21/usr/sbin/munin23:26:570
1330992220,1cyclictest0-21swapper/021:53:490
1330992220,1cyclictest0-21swapper/021:53:490
1330992218,3cyclictest0-21swapper/020:06:400
1330992216,6cyclictest1252-21apache200:24:020
1330992214,4cyclictest0-21swapper/022:03:170
1330992210,7cyclictest0-21swapper/000:27:120
1330992210,7cyclictest0-21swapper/000:01:250
133099220,20cyclictest0-21swapper/020:24:050
1061722210,0sleep00-21swapper/020:52:180
133199213,8cyclictest0-21swapper/120:57:011
1331992119,1cyclictest417-21chrt00:28:571
1331992114,4cyclictest14563-21seq21:03:201
1331992112,4cyclictest111422sleep121:44:551
133199211,19cyclictest0-21swapper/123:31:541
1331992110,6cyclictest0-21swapper/119:36:531
133099216,8cyclictest0-21swapper/023:01:510
1330992117,3cyclictest0-21swapper/023:11:570
1330992113,3cyclictest0-21swapper/023:21:560
1330992110,9cyclictest0-21swapper/021:37:510
1330992110,2cyclictest0-21swapper/023:50:080
133099210,21cyclictest0-21swapper/022:34:010
133099210,21cyclictest0-21swapper/020:59:490
133099210,1cyclictest0-21swapper/019:59:220
2876322010,0sleep10-21swapper/100:22:471
133199207,6cyclictest6376-21/usr/sbin/munin19:17:001
133199205,11cyclictest0-21swapper/120:41:541
133199202,3cyclictest0-21swapper/121:15:251
133199202,11cyclictest10313-21python20:52:001
1331992020,0cyclictest24-21ksoftirqd/121:06:571
1331992019,1cyclictest1241-21apache222:01:541
1331992019,0cyclictest24-21ksoftirqd/100:31:541
1331992015,4cyclictest16873-21/usr/sbin/munin23:22:001
1331992013,3cyclictest1328-21cyclictest23:38:421
1331992013,1cyclictest0-21swapper/122:35:191
1331992012,5cyclictest18002-21kworker/u4:021:48:571
1331992010,5cyclictest0-21swapper/120:11:521
1331992010,5cyclictest0-21swapper/119:46:521
1331992010,4cyclictest0-21swapper/120:36:161
133199200,11cyclictest0-21swapper/119:42:001
133099207,9cyclictest0-21swapper/022:47:010
133099207,12cyclictest0-21swapper/019:26:550
133099205,9cyclictest0-21swapper/019:31:530
133099202,6cyclictest0-21swapper/023:11:360
1330992018,1cyclictest19998-21sendmail_mailtr21:12:010
1330992014,3cyclictest0-21swapper/021:01:530
1330992010,7cyclictest0-21swapper/000:09:150
1330992010,6cyclictest0-21swapper/023:18:370
1330992010,3cyclictest0-21swapper/022:21:550
1330992010,3cyclictest0-21swapper/022:19:110
133099200,13cyclictest1111-21runrttasks00:12:170
133199193,8cyclictest1111-21runrttasks20:25:121
1331991918,1cyclictest1241-21apache223:01:221
1331991917,1cyclictest24-21ksoftirqd/122:22:011
1331991915,3cyclictest1328-21cyclictest20:16:541
1331991912,3cyclictest21268-21kworker/u4:123:08:441
1331991910,6cyclictest0-21swapper/122:39:181
1331991910,2cyclictest0-21swapper/123:31:391
1331991910,2cyclictest0-21swapper/119:21:511
1331991910,2cyclictest0-21swapper/100:18:051
133099192,17cyclictest0-21swapper/022:29:260
133099192,16cyclictest0-21swapper/021:22:570
1330991916,1cyclictest0-21swapper/022:56:070
1330991911,5cyclictest0-21swapper/021:56:580
1330991910,7cyclictest0-21swapper/021:48:040
1330991910,5cyclictest0-21swapper/022:58:410
1331991811,6cyclictest1241-21apache222:06:411
1331991810,5cyclictest0-21swapper/122:51:521
1331991810,3cyclictest0-21swapper/119:51:591
1331991810,0cyclictest0-21swapper/122:47:191
133099184,6cyclictest8224-21ssh23:53:120
133099183,8cyclictest0-21swapper/020:41:540
1330991818,0cyclictest0-21swapper/023:35:290
1330991810,3cyclictest0-21swapper/019:06:520
1330991810,2cyclictest0-21swapper/022:13:360
1330991810,2cyclictest0-21swapper/019:41:520
1330991810,2cyclictest0-21swapper/000:02:230
1330991810,1cyclictest0-21swapper/000:32:250
133199176,7cyclictest0-21swapper/122:43:071
133199173,9cyclictest3812-21irqstats19:11:551
133199170,2cyclictest0-21swapper/120:37:011
133099176,7cyclictest0-21swapper/020:06:580
133099174,9cyclictest0-21swapper/021:16:590
133099174,9cyclictest0-21swapper/020:11:540
133099172,10cyclictest0-21swapper/022:41:570
1330991710,3cyclictest0-21swapper/020:32:000
1330991710,3cyclictest0-21swapper/019:22:350
1330991710,2cyclictest0-21swapper/020:47:000
1331991610,3cyclictest0-21swapper/119:07:001
1330991610,5cyclictest0-21swapper/000:18:580
1330991610,2cyclictest0-21swapper/019:36:520
133199153,8cyclictest25397-21/usr/sbin/munin20:07:031
1331991514,0cyclictest8327-21grep20:47:001
1330991513,1cyclictest1241-21apache220:36:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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