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2026-03-14 - 08:45
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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 Sat Mar 14, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1409226956,8sleep00-21swapper/019:07:330
1394426856,8sleep10-21swapper/119:06:001
14451993737,0cyclictest0-21swapper/123:01:571
14450993210,21cyclictest0-21swapper/023:22:200
1445199310,1cyclictest0-21swapper/121:48:551
400023010,0sleep00-21swapper/023:33:130
1445199300,0cyclictest0-21swapper/123:45:061
1445099300,1cyclictest0-21swapper/022:03:090
1427123027,1sleep00-21swapper/019:09:240
14451992929,0cyclictest0-21swapper/121:27:241
14450992928,1cyclictest0-21swapper/021:58:550
14451992824,4cyclictest0-21swapper/122:13:491
14451992810,10cyclictest0-21swapper/122:53:431
14451992710,11cyclictest0-21swapper/122:14:361
14450992725,1cyclictest0-21swapper/021:39:570
157602260,0sleep1231ktimersoftd/123:04:381
1445199263,22cyclictest0-21swapper/119:29:361
1445199260,3cyclictest5036-21grep00:19:461
14450992611,5cyclictest0-21swapper/023:54:380
14451992512,8cyclictest25061-21apache221:09:351
1445199251,23cyclictest24296-21users23:59:441
14450992512,8cyclictest0-21swapper/021:13:120
14450992512,6cyclictest100150irq/106-eth1-rx21:47:410
14450992510,1cyclictest0-21swapper/000:31:410
14450992510,13cyclictest0-21swapper/023:37:450
1445099250,22cyclictest0-21swapper/022:57:130
1445199242,21cyclictest0-21swapper/123:31:571
1445099249,1cyclictest0-21swapper/023:44:530
14450992420,4cyclictest744-21snmpd22:37:330
14450992419,3cyclictest25088-21apache222:14:170
14450992410,8cyclictest0-21swapper/022:54:060
14450992410,0cyclictest0-21swapper/022:39:380
1445099240,23cyclictest0-21swapper/023:28:040
560822310,0sleep00-21swapper/000:20:570
14451992319,3cyclictest17989-21munin-node21:07:051
14450992318,3cyclictest25061-21apache221:51:590
14450992310,2cyclictest0-21swapper/023:03:560
1445199225,9cyclictest0-21swapper/123:54:431
14451992212,7cyclictest0-21swapper/123:35:061
14451992210,7cyclictest0-21swapper/122:22:591
14451992210,6cyclictest0-21swapper/121:54:361
14451992210,4cyclictest0-21swapper/121:34:271
14450992219,1cyclictest636-21nscd22:19:350
14450992215,3cyclictest81ktimersoftd/000:34:350
14450992210,8cyclictest0-21swapper/021:23:170
14450992210,0cyclictest0-21swapper/022:47:420
2118922110,0sleep10-21swapper/119:24:441
1445199214,8cyclictest0-21swapper/119:39:451
1445199213,13cyclictest0-21swapper/123:14:321
1445199212,16cyclictest16697-21kworker/1:223:42:071
14451992120,1cyclictest231ktimersoftd/122:44:371
14451992112,4cyclictest231ktimersoftd/123:11:371
14451992110,7cyclictest0-21swapper/123:50:011
14451992110,6cyclictest100150irq/106-eth1-rx00:33:591
1445199210,21cyclictest16697-21kworker/1:200:37:031
1445099215,8cyclictest0-21swapper/019:51:440
1445099212,14cyclictest0-21swapper/021:14:340
14450992120,1cyclictest25061-21apache200:13:390
14450992118,2cyclictest25088-21apache200:25:400
14450992117,3cyclictest4070-21kworker/u4:123:16:200
14450992115,4cyclictest25061-21apache221:27:010
14450992110,5cyclictest16306-21ssh23:49:390
14450992110,3cyclictest0-21swapper/023:09:340
14450992110,0cyclictest0-21swapper/021:36:340
1445099210,8cyclictest19747-21/usr/sbin/munin22:24:440
1445199206,12cyclictest0-21swapper/121:19:391
1445199203,12cyclictest0-21swapper/120:24:391
1445199202,7cyclictest18340-21apache_processe21:39:351
1445199202,5cyclictest0-21swapper/120:41:401
14451992019,1cyclictest25088-21apache222:00:261
14451992014,4cyclictest100250irq/107-eth1-rx00:14:401
14451992010,6cyclictest0-21swapper/119:14:391
14451992010,4cyclictest0-21swapper/119:19:401
14451992010,3cyclictest0-21swapper/122:04:381
14451992010,3cyclictest0-21swapper/121:15:081
1445099206,9cyclictest12826-21apache_processe20:29:340
14450992018,1cyclictest22961-21/usr/sbin/munin23:59:440
14450992010,6cyclictest0-21swapper/023:42:280
14450992010,6cyclictest0-21swapper/021:31:040
14450992010,4cyclictest0-21swapper/020:34:400
14450992010,1cyclictest0-21swapper/000:06:480
1445099200,12cyclictest0-21swapper/019:24:440
218921910,0sleep00-21swapper/000:16:420
1445199199,7cyclictest0-21swapper/100:24:391
1445199198,10cyclictest0-21swapper/122:24:441
1445199194,13cyclictest0-21swapper/119:54:411
1445199192,10cyclictest0-21swapper/119:34:421
14451991913,4cyclictest744-21snmpd00:04:511
14451991911,5cyclictest100250irq/107-eth1-rx22:36:231
14451991910,4cyclictest0-21swapper/121:29:341
14451991910,4cyclictest0-21swapper/120:34:351
14451991910,3cyclictest0-21swapper/123:20:381
14451991910,3cyclictest0-21swapper/120:49:301
14451991910,1cyclictest0-21swapper/122:54:351
1445199190,13cyclictest0-21swapper/120:44:361
1445099199,7cyclictest0-21swapper/022:14:330
14450991919,0cyclictest0-21swapper/019:44:030
14450991918,1cyclictest25088-21apache220:26:320
14450991910,4cyclictest0-21swapper/021:04:380
1790921810,0sleep00-21swapper/023:07:330
14451991816,1cyclictest25061-21apache223:24:261
14451991812,3cyclictest14448-21cyclictest20:09:371
1445199181,16cyclictest16697-21kworker/1:220:29:591
14451991811,4cyclictest0-21swapper/119:09:351
14451991810,4cyclictest0-21swapper/120:04:421
14451991810,2cyclictest0-21swapper/119:49:251
14451991810,1cyclictest0-21swapper/122:34:211
14450991812,5cyclictest25061-21apache219:56:480
14450991811,6cyclictest11776-21kworker/0:219:33:020
14450991810,4cyclictest0-21swapper/022:29:400
14450991810,4cyclictest0-21swapper/020:40:070
14450991810,3cyclictest0-21swapper/020:08:300
14450991810,3cyclictest0-21swapper/019:14:350
14450991810,2cyclictest0-21swapper/022:06:180
1445099180,11cyclictest0-21swapper/020:54:370
1445199175,7cyclictest0-21swapper/120:54:381
1445199174,7cyclictest26701-21/usr/sbin/munin21:49:421
14450991712,2cyclictest25088-21apache220:50:100
14450991710,4cyclictest11776-21kworker/0:219:21:320
14450991710,4cyclictest0-21swapper/019:59:330
1445199165,5cyclictest0-21swapper/100:12:541
14451991610,4cyclictest0-21swapper/122:40:081
14451991610,4cyclictest0-21swapper/119:49:381
14451991610,2cyclictest0-21swapper/120:59:361
1445099167,7cyclictest0-21swapper/020:59:340
14450991612,4cyclictest0-21swapper/019:34:290
1445099160,8cyclictest0-21swapper/020:09:420
1032021610,1sleep10-21swapper/120:20:001
2948621510,0sleep00-21swapper/019:47:100
14451991511,2cyclictest0-21swapper/119:59:401
1445099152,4cyclictest0-21swapper/020:14:340
14450991514,1cyclictest0-21swapper/020:46:500
1445199143,7cyclictest0-21swapper/120:14:361
1445099140,6cyclictest0-21swapper/020:19:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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