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2026-08-11 - 21:28
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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 Tue Aug 11, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1741622300,2sleep00-21swapper/007:03:210
1860327154,8sleep10-21swapper/107:03:471
118642680,0sleep011865-21/usr/sbin/munin09:23:220
19202993939,0cyclictest0-21swapper/010:22:220
19202993410,24cyclictest0-21swapper/010:03:150
19202993410,24cyclictest0-21swapper/010:03:150
19202993210,1cyclictest0-21swapper/009:56:400
19203993010,14cyclictest0-21swapper/112:31:091
19203992912,8cyclictest0-21swapper/108:10:531
1920399291,27cyclictest0-21swapper/107:33:241
19203992810,4cyclictest0-21swapper/111:58:091
1920299280,16cyclictest2423-21kworker/u4:112:13:250
19203992710,9cyclictest0-21swapper/110:43:231
19203992710,16cyclictest0-21swapper/110:06:501
19203992710,16cyclictest0-21swapper/110:06:501
19202992710,4cyclictest0-21swapper/011:23:430
81472260,0sleep18146-21sleep10:03:111
19203992611,5cyclictest19200-21cyclictest07:23:291
19202992626,0cyclictest0-21swapper/010:44:320
19202992624,1cyclictest0-21swapper/011:45:170
19202992610,4cyclictest0-21swapper/009:58:370
19202992610,3cyclictest0-21swapper/011:57:170
19202992610,1cyclictest0-21swapper/012:09:240
19202992610,14cyclictest0-21swapper/011:05:260
19203992511,9cyclictest0-21swapper/112:14:221
19203992510,4cyclictest0-21swapper/111:09:261
1920399250,25cyclictest0-21swapper/112:35:591
1920299254,20cyclictest0-21swapper/012:02:310
1920299254,1cyclictest0-21swapper/011:16:070
1920299252,22cyclictest0-21swapper/012:34:020
19202992517,7cyclictest0-21swapper/007:51:470
1920299251,23cyclictest0-21swapper/012:33:100
19202992510,8cyclictest0-21swapper/009:49:270
19202992510,8cyclictest0-21swapper/008:18:320
19202992510,8cyclictest0-21swapper/008:18:320
1920299250,0cyclictest0-21swapper/008:53:470
1920299247,16cyclictest0-21swapper/007:28:250
19202992418,2cyclictest4391-21/usr/sbin/munin07:53:330
19202992412,9cyclictest100250irq/107-eth1-rx10:10:560
19202992410,8cyclictest0-21swapper/011:02:140
19202992410,7cyclictest0-21swapper/008:28:280
1920299240,23cyclictest0-21swapper/011:32:010
1920399239,7cyclictest0-21swapper/110:38:271
1920399235,14cyclictest0-21swapper/112:08:301
1920399234,9cyclictest0-21swapper/111:20:551
19203992321,1cyclictest29036-21apache210:25:521
19203992319,3cyclictest29037-21apache209:16:101
19203992318,1cyclictest19200-21cyclictest11:34:551
19203992315,4cyclictest167-21systemd-journal09:06:161
19203992313,6cyclictest14039-21kworker/u4:210:30:321
19203992310,5cyclictest0-21swapper/108:38:221
1920399230,16cyclictest0-21swapper/111:24:451
19202992317,4cyclictest29037-21apache208:05:340
106542230,1sleep00-21swapper/010:51:560
19203992218,4cyclictest29037-21apache210:34:041
19203992218,3cyclictest11243-21dump-pmu-power10:53:101
1920399221,20cyclictest635-21diskmemload09:13:051
1920299225,10cyclictest635-21diskmemload12:18:240
19202992210,4cyclictest0-21swapper/012:03:260
19202992210,1cyclictest0-21swapper/011:48:220
19202992210,12cyclictest0-21swapper/007:26:130
1920299220,9cyclictest0-21swapper/010:38:240
1133122210,0sleep10-21swapper/109:22:191
1920399214,10cyclictest0-21swapper/108:58:281
19203992120,1cyclictest947-21sendmail-mta10:11:461
19203992114,4cyclictest0-21swapper/108:33:231
19203992114,3cyclictest0-21swapper/109:38:291
19203992110,4cyclictest0-21swapper/110:53:291
1920299215,10cyclictest0-21swapper/009:11:470
1920299211,10cyclictest0-21swapper/009:38:290
19202992110,9cyclictest0-21swapper/011:18:230
19202992110,6cyclictest0-21swapper/010:33:030
19202992110,2cyclictest0-21swapper/012:23:460
1920399204,9cyclictest0-21swapper/111:58:281
19203992018,2cyclictest231ktimersoftd/112:03:341
19203992018,1cyclictest0-21swapper/111:53:071
19203992011,4cyclictest0-21swapper/109:33:321
19203992010,6cyclictest0-21swapper/107:53:291
1920299207,12cyclictest0-21swapper/008:49:390
1920299202,10cyclictest0-21swapper/010:33:300
19202992012,8cyclictest0-21swapper/007:18:170
1920299201,15cyclictest0-21swapper/009:18:270
19202992011,5cyclictest0-21swapper/007:38:250
19202992010,8cyclictest0-21swapper/010:54:040
19202992010,6cyclictest0-21swapper/011:33:570
19202992010,5cyclictest0-21swapper/008:08:230
19202992010,4cyclictest0-21swapper/009:34:080
19202992010,3cyclictest0-21swapper/009:18:080
19202992010,10cyclictest0-21swapper/010:26:310
358921910,0sleep10-21swapper/111:28:121
1920399198,6cyclictest0-21swapper/109:50:291
1920399194,8cyclictest0-21swapper/107:13:271
1920399193,7cyclictest0-21swapper/108:13:221
19203991914,2cyclictest19200-21cyclictest08:05:261
19203991911,0cyclictest0-21swapper/111:42:481
19203991910,5cyclictest0-21swapper/109:23:231
19203991910,3cyclictest0-21swapper/108:18:161
19203991910,3cyclictest0-21swapper/108:18:161
1920299195,6cyclictest635-21diskmemload09:44:540
19202991918,0cyclictest20368-21grep08:33:260
19202991910,2cyclictest0-21swapper/011:38:220
203821810,1sleep10-21swapper/107:45:271
1920399185,8cyclictest0-21swapper/107:38:151
1920399184,10cyclictest649-21nscd10:14:221
1920399183,7cyclictest25520-21/usr/sbin/munin11:13:291
19203991816,2cyclictest19200-21cyclictest11:01:421
19203991814,2cyclictest0-21swapper/108:53:301
19203991810,7cyclictest0-21swapper/112:20:571
19203991810,5cyclictest0-21swapper/111:04:271
19203991810,5cyclictest0-21swapper/108:23:271
19203991810,4cyclictest0-21swapper/109:32:391
19203991810,2cyclictest0-21swapper/112:23:581
1920299184,7cyclictest0-21swapper/007:43:280
1920299183,6cyclictest31315-21apache_accesses09:03:220
19202991818,0cyclictest0-21swapper/008:14:110
1920299181,6cyclictest0-21swapper/011:11:520
19202991811,5cyclictest15916-21apache_accesses08:23:250
19202991810,3cyclictest0-21swapper/007:13:310
1920299180,1cyclictest0-21swapper/009:30:060
1920399176,8cyclictest0-21swapper/107:18:261
19203991710,7cyclictest0-21swapper/109:56:101
19203991710,6cyclictest0-21swapper/111:45:341
19203991710,3cyclictest0-21swapper/108:30:091
19203991710,2cyclictest0-21swapper/108:44:541
1920299177,9cyclictest0-21swapper/008:38:210
1920299177,7cyclictest0-21swapper/007:08:220
19202991717,0cyclictest81ktimersoftd/010:13:220
19202991710,4cyclictest0-21swapper/007:38:110
19202991710,3cyclictest0-21swapper/008:43:230
1920399166,9cyclictest28739-21ssh09:45:391
1920399165,6cyclictest0-21swapper/107:58:251
1920399165,4cyclictest0-21swapper/107:48:251
1920399163,6cyclictest0-21swapper/110:18:301
1920399162,7cyclictest0-21swapper/107:28:251
19203991610,5cyclictest0-21swapper/107:12:161
1920299165,6cyclictest0-21swapper/008:58:230
19202991610,4cyclictest0-21swapper/008:01:420
1920399143,10cyclictest0-21swapper/108:48:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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