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2026-04-02 - 13:06
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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 Thu Apr 02, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174127058,8sleep10-21swapper/119:05:251
195526856,8sleep00-21swapper/019:07:390
2292993510,3cyclictest16322-21kworker/u4:000:22:390
2293993217,15cyclictest0-21swapper/122:23:291
2292993123,6cyclictest7453-21apache200:37:530
2293993010,18cyclictest0-21swapper/120:15:131
229399290,23cyclictest28004-21/usr/sbin/munin22:54:331
2293992810,1cyclictest0-21swapper/119:33:291
2293992810,18cyclictest0-21swapper/122:45:431
2292992810,17cyclictest0-21swapper/023:03:080
2293992718,4cyclictest17714-21/usr/sbin/munin19:49:281
2293992710,8cyclictest0-21swapper/123:14:581
2292992711,8cyclictest0-21swapper/023:59:310
229399261,23cyclictest7496-21/usr/sbin/munin22:24:351
2292992623,2cyclictest20429-21sh21:59:220
2293992520,4cyclictest802-21apache221:09:211
229299250,14cyclictest0-21swapper/021:29:520
2293992424,0cyclictest0-21swapper/120:54:181
2293992417,5cyclictest7453-21apache222:06:151
2292992410,13cyclictest0-21swapper/021:04:270
229399235,10cyclictest0-21swapper/120:39:311
2293992323,0cyclictest0-21swapper/120:23:401
2293992322,0cyclictest14349-21kworker/1:200:13:461
2293992318,5cyclictest7453-21apache222:36:311
2293992310,5cyclictest0-21swapper/121:21:011
2293992310,11cyclictest0-21swapper/100:25:381
229299232,4cyclictest0-21swapper/022:32:160
229299232,13cyclictest0-21swapper/022:04:340
2292992321,1cyclictest7453-21apache222:27:020
2292992317,5cyclictest7453-21apache221:16:500
2292992315,5cyclictest0-21swapper/023:58:510
2292992310,6cyclictest16792-21kworker/u4:022:39:130
2292992310,6cyclictest0-21swapper/021:09:350
2292992310,5cyclictest0-21swapper/022:55:240
229299230,0cyclictest30000-21ssh22:11:240
2293992222,0cyclictest0-21swapper/121:29:521
2293992220,1cyclictest7453-21apache223:11:331
2293992220,1cyclictest636-21nscd23:24:041
229399221,20cyclictest29938-21ssh22:11:151
2293992210,7cyclictest0-21swapper/100:01:041
229299226,12cyclictest0-21swapper/022:14:290
229299226,11cyclictest0-21swapper/023:04:370
229299224,11cyclictest0-21swapper/020:24:290
2292992214,1cyclictest100250irq/107-eth1-rx21:34:510
229299221,20cyclictest27045-21/usr/sbin/munin00:24:320
2292992210,9cyclictest0-21swapper/000:14:500
2292992210,6cyclictest0-21swapper/023:39:590
2292992210,5cyclictest0-21swapper/021:57:350
2292992210,5cyclictest0-21swapper/000:04:290
966422110,0sleep10-21swapper/123:58:591
229399213,13cyclictest0-21swapper/122:30:051
2293992118,1cyclictest25621-21kworker/u4:222:04:101
2293992117,4cyclictest7453-21apache223:27:051
2293992112,7cyclictest7480-21apache221:25:161
2293992112,5cyclictest100250irq/107-eth1-rx21:34:311
2293992110,5cyclictest0-21swapper/119:21:501
2292992116,3cyclictest7453-21apache221:41:030
2292992112,6cyclictest636-21nscd23:12:050
2292992110,9cyclictest0-21swapper/020:19:270
2292992110,7cyclictest0-21swapper/020:34:290
2292992110,5cyclictest0-21swapper/020:04:330
2292992110,5cyclictest0-21swapper/019:55:220
2292992110,5cyclictest0-21swapper/000:12:180
2292992110,2cyclictest0-21swapper/019:09:340
181122110,0sleep10-21swapper/123:47:181
917722010,0sleep10-21swapper/121:43:541
241622010,0sleep10-21swapper/122:19:151
229399207,7cyclictest165272sleep119:44:331
229399203,12cyclictest0-21swapper/100:14:361
2293992019,0cyclictest231ktimersoftd/123:50:491
2293992016,3cyclictest636-21nscd21:55:181
2293992014,3cyclictest0-21swapper/121:04:261
2293992010,5cyclictest0-21swapper/119:09:291
2293992010,4cyclictest0-21swapper/121:48:541
2293992010,4cyclictest0-21swapper/100:29:321
2293992010,3cyclictest0-21swapper/100:22:501
229299204,8cyclictest0-21swapper/019:44:270
229299203,10cyclictest12256-21runrttasks23:16:270
2292992019,0cyclictest0-21swapper/023:45:430
2292992014,3cyclictest81ktimersoftd/019:14:280
2292992010,1cyclictest0-21swapper/022:52:350
2980921910,0sleep10-21swapper/123:40:341
229399199,5cyclictest231ktimersoftd/119:59:331
229399195,7cyclictest0-21swapper/120:59:331
229399194,8cyclictest0-21swapper/122:49:331
2293991917,1cyclictest7453-21apache221:16:331
2293991914,1cyclictest0-21swapper/121:49:281
2293991910,5cyclictest0-21swapper/122:59:331
2293991910,5cyclictest0-21swapper/119:39:311
2293991910,4cyclictest0-21swapper/123:35:271
2293991910,4cyclictest0-21swapper/119:34:241
2293991910,4cyclictest0-21swapper/100:04:341
2293991910,3cyclictest0-21swapper/122:39:291
2293991910,3cyclictest0-21swapper/119:24:341
229299199,3cyclictest7480-21apache223:34:270
229299194,11cyclictest0-21swapper/023:19:260
229299192,14cyclictest0-21swapper/020:14:270
2292991911,6cyclictest100250irq/107-eth1-rx22:45:320
2292991910,6cyclictest0-21swapper/021:26:020
2292991910,5cyclictest0-21swapper/023:25:030
2292991910,4cyclictest0-21swapper/020:44:260
2292991910,2cyclictest0-21swapper/021:44:170
2292991910,2cyclictest0-21swapper/019:53:510
2292991910,1cyclictest0-21swapper/021:50:210
2292991910,1cyclictest0-21swapper/000:34:160
229399187,4cyclictest0-21swapper/120:39:161
2293991813,4cyclictest7453-21apache223:33:331
2293991812,3cyclictest7453-21apache220:10:301
2293991810,8cyclictest0-21swapper/120:47:111
2293991810,3cyclictest0-21swapper/120:49:321
2293991810,3cyclictest0-21swapper/120:29:261
229299183,8cyclictest15913-21diskmemload23:31:250
229299183,7cyclictest0-21swapper/019:39:400
2292991816,1cyclictest0-21swapper/022:42:590
2292991816,0cyclictest0-21swapper/021:19:300
2292991813,3cyclictest579-21cron20:01:160
2292991812,2cyclictest0-21swapper/023:52:460
2292991811,3cyclictest0-21swapper/020:54:340
229299180,18cyclictest0-21swapper/019:22:550
229399176,6cyclictest19629-21apache_processe19:54:281
2293991715,1cyclictest636-21nscd23:04:381
2293991712,5cyclictest0-21swapper/100:38:351
2293991710,3cyclictest0-21swapper/120:04:281
2292991712,4cyclictest7453-21apache219:26:520
229299170,9cyclictest0-21swapper/020:09:250
555321610,1sleep10-21swapper/119:14:571
229299165,6cyclictest11952-21/usr/sbin/munin19:34:240
229299164,7cyclictest0-21swapper/020:49:270
229299163,6cyclictest0-21swapper/020:29:350
229299162,7cyclictest0-21swapper/022:19:290
2292991610,2cyclictest0-21swapper/019:29:190
2293991510,2cyclictest0-21swapper/120:24:291
2292991510,3cyclictest0-21swapper/021:01:360
229299141,5cyclictest5469-21/usr/sbin/munin20:39:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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