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2026-08-07 - 15:47
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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 highest latencies:
System rackcslot2.osadl.org (updated Fri Aug 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
674627833,40sleep00-21swapper/007:07:280
506626754,8sleep10-21swapper/107:03:191
227452630,0sleep00-21swapper/009:09:030
700399290,28cyclictest31452-21kworker/u4:111:50:031
700399280,1cyclictest0-21swapper/109:56:201
700399277,19cyclictest2083-21kworker/u4:012:17:431
7003992727,0cyclictest0-21swapper/112:33:421
7003992725,1cyclictest0-21swapper/109:19:221
7002992721,3cyclictest81ktimersoftd/009:53:280
700399269,8cyclictest7000-21cyclictest09:30:111
7003992610,9cyclictest0-21swapper/112:30:131
7002992618,3cyclictest0-21swapper/012:13:360
7002992613,4cyclictest100250irq/107-eth1-rx09:41:570
7003992522,2cyclictest30235-21basename08:08:131
7003992511,11cyclictest0-21swapper/110:47:141
7003992510,0cyclictest0-21swapper/112:18:561
7003992420,3cyclictest579-21cron09:50:131
700399240,22cyclictest0-21swapper/108:28:261
7002992424,0cyclictest0-21swapper/012:18:410
7002992419,4cyclictest0-21swapper/009:18:520
7002992413,5cyclictest636-21nscd12:09:430
7002992410,8cyclictest0-21swapper/007:38:240
7002992410,13cyclictest0-21swapper/009:05:320
700299240,21cyclictest0-21swapper/012:24:010
700399238,10cyclictest20916-21diskmemload09:13:071
7003992318,5cyclictest16887-21apache210:32:171
7003992317,5cyclictest24479-21snmpd10:06:001
7003992310,11cyclictest0-21swapper/111:59:341
700299232,1cyclictest0-21swapper/011:07:430
7002992318,4cyclictest16895-21apache211:46:470
7002992310,12cyclictest0-21swapper/011:49:110
700399225,9cyclictest0-21swapper/112:08:231
7003992210,6cyclictest0-21swapper/111:56:451
7003992210,6cyclictest0-21swapper/111:43:221
7003992210,6cyclictest0-21swapper/107:08:231
7003992210,5cyclictest0-21swapper/111:08:271
7002992214,5cyclictest0-21swapper/008:23:240
7002992210,7cyclictest0-21swapper/012:07:540
7002992210,4cyclictest0-21swapper/007:18:270
7002992210,10cyclictest0-21swapper/009:45:310
700299220,17cyclictest0-21swapper/010:42:020
700399212,2cyclictest20916-21diskmemload11:30:521
700399212,2cyclictest0-21swapper/111:17:221
7003992119,2cyclictest16887-21apache208:53:281
7003992119,1cyclictest0-21swapper/107:37:061
7003992116,2cyclictest0-21swapper/110:48:161
700399211,19cyclictest13666-21ssh09:38:471
7003992110,8cyclictest0-21swapper/111:33:241
7003992110,8cyclictest0-21swapper/110:18:311
7003992110,5cyclictest0-21swapper/110:08:481
7003992110,2cyclictest0-21swapper/107:28:251
700399210,3cyclictest4890-21kworker/u4:112:25:491
700299214,11cyclictest0-21swapper/007:48:270
7002992118,0cyclictest100150irq/106-eth1-rx10:11:250
7002992116,4cyclictest81ktimersoftd/011:02:590
7002992114,6cyclictest16895-21apache210:32:170
7002992111,3cyclictest0-21swapper/009:36:470
7002992110,3cyclictest0-21swapper/010:43:450
7002992110,10cyclictest0-21swapper/007:43:250
700399204,8cyclictest0-21swapper/111:18:271
700399203,14cyclictest25552-21perl09:13:241
700399202,12cyclictest6583-21kworker/u4:010:14:071
7003992018,2cyclictest31425-21kworker/1:207:19:341
700399201,1cyclictest20916-21diskmemload11:40:331
7003992010,7cyclictest0-21swapper/110:35:401
700299203,10cyclictest0-21swapper/008:48:320
7002992019,1cyclictest16887-21apache211:34:540
7002992018,1cyclictest32507-21df_inode08:13:260
7002992014,3cyclictest0-21swapper/010:05:370
7002992013,2cyclictest24677-21cpu07:53:260
7002992010,9cyclictest0-21swapper/012:35:590
7002992010,5cyclictest0-21swapper/010:53:230
7002992010,5cyclictest0-21swapper/007:23:320
7002992010,4cyclictest0-21swapper/009:48:320
700299200,9cyclictest0-21swapper/012:28:350
654922010,0sleep00-21swapper/009:30:150
700399194,8cyclictest29304-21runrttasks11:26:361
700399194,2cyclictest0-21swapper/109:47:031
700399191,13cyclictest0-21swapper/108:58:251
7003991910,7cyclictest0-21swapper/111:04:501
7003991910,7cyclictest0-21swapper/110:38:281
7003991910,7cyclictest0-21swapper/108:13:251
7003991910,5cyclictest0-21swapper/107:53:301
7003991910,1cyclictest0-21swapper/109:25:141
7003991910,0cyclictest0-21swapper/107:58:271
700299196,5cyclictest27161-21/usr/sbin/munin11:23:290
700299194,5cyclictest0-21swapper/007:28:250
7002991914,2cyclictest0-21swapper/010:13:270
7002991912,1cyclictest0-21swapper/009:13:170
7002991911,4cyclictest0-21swapper/011:18:260
7002991910,8cyclictest0-21swapper/010:27:300
7002991910,5cyclictest0-21swapper/008:18:280
7002991910,3cyclictest0-21swapper/011:55:010
7002991910,1cyclictest0-21swapper/008:28:250
7002991910,1cyclictest0-21swapper/007:33:280
700299190,11cyclictest0-21swapper/011:38:260
2559221910,0sleep10-21swapper/112:03:511
700399185,9cyclictest0-21swapper/108:33:291
700399185,8cyclictest0-21swapper/110:53:281
700399182,15cyclictest16939-21kworker/1:107:47:281
7003991811,3cyclictest0-21swapper/110:59:151
7003991810,5cyclictest0-21swapper/107:38:321
7003991810,4cyclictest0-21swapper/109:37:151
7003991810,3cyclictest0-21swapper/110:23:241
700299187,7cyclictest0-21swapper/010:33:300
7002991810,5cyclictest0-21swapper/007:15:530
7002991810,3cyclictest0-21swapper/009:58:230
7002991810,3cyclictest0-21swapper/008:03:300
7002991810,2cyclictest0-21swapper/010:50:350
7003991711,3cyclictest16887-21apache208:10:171
7003991710,4cyclictest16895-21apache209:04:341
7003991710,4cyclictest0-21swapper/108:48:301
7003991710,4cyclictest0-21swapper/107:23:301
7003991710,4cyclictest0-21swapper/107:13:541
7003991710,3cyclictest0-21swapper/107:48:231
700299174,9cyclictest0-21swapper/007:58:290
700299174,12cyclictest1731-21/usr/sbin/munin09:23:320
7002991714,3cyclictest0-21swapper/008:42:500
7002991710,7cyclictest0-21swapper/009:03:060
7002991710,4cyclictest0-21swapper/011:16:220
7002991710,4cyclictest0-21swapper/011:08:490
7002991710,3cyclictest0-21swapper/010:18:340
7002991710,2cyclictest0-21swapper/011:58:240
7002991710,2cyclictest0-21swapper/011:28:150
3009621710,0sleep10-21swapper/110:01:531
7003991610,3cyclictest0-21swapper/108:38:231
700299165,4cyclictest16861-21apache208:43:240
700299161,6cyclictest30378-21/usr/sbin/munin08:08:310
7002991616,0cyclictest8000-21sendmail_mailtr07:08:310
7002991610,4cyclictest0-21swapper/008:35:170
700399156,7cyclictest0-21swapper/108:43:241
700399152,6cyclictest3757-21apache_accesses08:23:241
7003991414,0cyclictest0-21swapper/108:18:261
700299145,5cyclictest0-21swapper/008:53:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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