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2026-03-23 - 08:55
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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 Mar 23, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2267127261,7sleep00-21swapper/019:07:190
2269526754,9sleep10-21swapper/119:07:341
254712510,0sleep00-21swapper/019:14:350
23045993512,11cyclictest22670-21kworker/u4:223:13:201
2304599320,31cyclictest0-21swapper/100:19:101
23044992910,10cyclictest0-21swapper/022:53:460
23045992823,4cyclictest231ktimersoftd/120:39:321
23044992722,3cyclictest100250irq/107-eth1-rx21:46:090
23044992710,13cyclictest0-21swapper/023:19:210
23045992619,5cyclictest0-21swapper/121:12:241
2304599260,14cyclictest0-21swapper/120:59:331
2304499265,20cyclictest0-21swapper/022:56:020
23044992624,1cyclictest0-21swapper/023:43:260
2304499262,20cyclictest0-21swapper/023:06:520
23044992619,6cyclictest18804-21apache221:28:460
23044992610,7cyclictest0-21swapper/023:14:420
23045992510,2cyclictest0-21swapper/122:27:081
2304599250,4cyclictest0-21swapper/100:12:571
23044992522,2cyclictest0-21swapper/021:53:230
23044992518,3cyclictest28633-21rm21:41:020
23044992510,4cyclictest0-21swapper/022:29:370
23044992510,4cyclictest0-21swapper/021:19:260
23045992422,1cyclictest0-21swapper/123:45:421
2304599240,22cyclictest1542-21sshd23:19:161
2304599240,21cyclictest0-21swapper/100:19:541
987322310,1sleep10-21swapper/119:59:321
2304599237,15cyclictest0-21swapper/122:42:551
23045992317,5cyclictest18804-21apache221:48:391
23045992316,7cyclictest0-21swapper/121:41:241
2304599230,22cyclictest0-21swapper/123:49:371
23044992323,0cyclictest0-21swapper/022:28:240
2304599222,19cyclictest0-21swapper/123:59:331
23045992218,3cyclictest18790-21apache223:29:331
23045992215,4cyclictest18804-21apache222:03:491
23045992213,5cyclictest0-21swapper/122:31:021
23045992213,3cyclictest5207-21sh23:24:201
23045992210,6cyclictest0-21swapper/123:24:361
23045992210,1cyclictest0-21swapper/123:56:261
2304499226,15cyclictest25107-21idleruntime-cro20:39:200
2304499225,5cyclictest0-21swapper/022:19:380
23044992216,4cyclictest645-21nscd20:59:500
23044992211,10cyclictest25550-21ssh23:51:280
23044992210,5cyclictest0-21swapper/023:47:590
23044992210,3cyclictest0-21swapper/021:09:220
2304499220,4cyclictest0-21swapper/020:29:330
2304499220,14cyclictest744-21snmpd23:24:240
2304599215,11cyclictest0-21swapper/122:59:401
2304599214,12cyclictest0-21swapper/121:04:331
2304599214,11cyclictest0-21swapper/119:49:371
2304599213,13cyclictest0-21swapper/100:24:411
2304599212,11cyclictest4121-21apache_accesses19:44:321
23045992119,1cyclictest28390-21grep20:44:401
23045992119,1cyclictest0-21swapper/120:54:381
23045992117,2cyclictest18790-21apache221:35:151
23045992115,5cyclictest4247-21diskmemload21:54:571
23045992114,6cyclictest0-21swapper/120:04:261
2304599211,3cyclictest12563-21apache_volume22:49:321
23045992111,7cyclictest100250irq/107-eth1-rx00:30:581
23045992110,6cyclictest0-21swapper/122:12:201
2304499216,7cyclictest0-21swapper/021:54:360
2304499215,12cyclictest0-21swapper/022:59:440
23044992120,1cyclictest18804-21apache219:24:360
23044992112,6cyclictest18191-21kworker/0:221:37:310
2304499211,1cyclictest27080-21grep23:09:310
23044992110,6cyclictest0-21swapper/019:29:320
23044992110,5cyclictest0-21swapper/000:34:420
23044992110,4cyclictest0-21swapper/000:14:250
23044992110,3cyclictest0-21swapper/020:19:310
23044992110,3cyclictest0-21swapper/020:09:380
2674022010,0sleep10-21swapper/122:24:121
23045992019,1cyclictest18804-21apache219:29:411
23045992015,3cyclictest18804-21apache221:23:131
23045992013,6cyclictest18804-21apache221:14:251
23045992013,3cyclictest231ktimersoftd/100:34:301
23045992013,2cyclictest0-21swapper/123:41:501
23045992011,5cyclictest100150irq/106-eth1-rx22:36:091
23045992010,9cyclictest0-21swapper/123:04:331
23045992010,7cyclictest0-21swapper/121:50:231
23045992010,5cyclictest0-21swapper/121:29:161
2304599200,8cyclictest0-21swapper/120:49:371
2304499209,8cyclictest0-21swapper/022:44:470
2304499202,9cyclictest0-21swapper/000:20:180
23044992020,0cyclictest0-21swapper/020:49:330
23044992014,5cyclictest0-21swapper/022:09:330
2304499201,15cyclictest19139-21rm00:29:260
23044992010,6cyclictest0-21swapper/023:36:230
23044992010,5cyclictest0-21swapper/021:33:130
23044992010,5cyclictest0-21swapper/019:59:370
23044992010,10cyclictest0-21swapper/019:58:290
2304599193,12cyclictest0-21swapper/119:34:401
23045991910,2cyclictest0-21swapper/119:19:411
2304499197,8cyclictest0-21swapper/019:44:320
2304499194,6cyclictest0-21swapper/021:04:340
23044991917,1cyclictest2380-21sh00:04:330
23044991910,5cyclictest0-21swapper/023:54:340
23044991910,5cyclictest0-21swapper/000:00:250
23044991910,4cyclictest0-21swapper/019:34:330
23044991910,3cyclictest0-21swapper/022:37:050
1664221910,0sleep00-21swapper/000:24:430
2304599189,6cyclictest18804-21apache222:14:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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