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2026-03-15 - 10:06
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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 highest latencies:
System rackcslot2.osadl.org (updated Sun Mar 15, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1722726957,8sleep00-21swapper/019:09:050
201852680,1sleep10-21swapper/100:38:501
1550126856,8sleep10-21swapper/119:04:281
17437993610,23cyclictest0-21swapper/000:14:240
17438993310,0cyclictest0-21swapper/121:09:391
17438993110,2cyclictest0-21swapper/123:13:061
17438993010,0cyclictest0-21swapper/121:29:251
17438992928,1cyclictest23950-21ssh22:26:531
17438992810,0cyclictest0-21swapper/123:39:341
17438992810,0cyclictest0-21swapper/121:27:321
1743899280,4cyclictest91rcu_preempt22:32:491
17437992813,15cyclictest0-21swapper/019:11:430
1743899270,6cyclictest5430-21ssh21:17:261
17437992726,1cyclictest0-21swapper/023:27:230
17437992723,3cyclictest1429-21apache222:53:390
17437992710,11cyclictest0-21swapper/022:59:340
17438992626,0cyclictest0-21swapper/120:32:511
17438992521,1cyclictest29638-21kworker/1:000:29:411
17438992520,3cyclictest802-21apache221:20:441
17438992510,14cyclictest0-21swapper/122:59:341
1743899250,21cyclictest0-21swapper/123:32:061
1743799259,15cyclictest0-21swapper/000:23:440
17437992521,3cyclictest1429-21apache219:22:540
1743799251,23cyclictest0-21swapper/023:13:090
17437992510,8cyclictest0-21swapper/022:12:300
17438992419,3cyclictest1429-21apache222:06:241
17438992410,6cyclictest0-21swapper/122:57:151
17438992410,5cyclictest0-21swapper/121:49:431
17438992410,11cyclictest0-21swapper/123:47:161
1743899240,18cyclictest0-21swapper/100:27:041
17437992424,0cyclictest0-21swapper/021:43:530
17437992421,3cyclictest802-21apache200:36:240
17437992421,1cyclictest31008-21diskmemload23:44:160
17437992418,6cyclictest1456-21apache222:46:140
17437992412,7cyclictest1456-21apache221:32:120
17437992410,9cyclictest0-21swapper/022:54:500
17437992410,8cyclictest0-21swapper/023:34:360
17437992410,6cyclictest0-21swapper/022:14:420
17437992410,14cyclictest0-21swapper/021:19:190
1743899235,11cyclictest0-21swapper/123:24:361
1743899232,5cyclictest0-21swapper/123:23:451
1743899232,13cyclictest0-21swapper/120:39:371
1743799236,10cyclictest0-21swapper/020:39:390
17437992321,1cyclictest13330-21/usr/sbin/munin00:29:380
17437992318,4cyclictest19860-21ssh21:36:270
17437992312,6cyclictest636-21nscd00:17:090
1743799231,16cyclictest0-21swapper/022:25:310
17437992310,9cyclictest0-21swapper/023:22:590
1743899226,8cyclictest0-21swapper/119:49:371
17438992222,0cyclictest0-21swapper/119:16:281
17438992213,5cyclictest100150irq/106-eth1-rx22:46:211
17438992210,8cyclictest0-21swapper/121:44:211
1743799227,9cyclictest0-21swapper/019:34:400
1743799223,14cyclictest0-21swapper/021:09:410
17437992210,5cyclictest0-21swapper/022:05:190
17437992210,10cyclictest0-21swapper/023:55:070
1743899216,11cyclictest0-21swapper/121:59:341
1743899212,12cyclictest0-21swapper/119:56:051
17438992119,1cyclictest231ktimersoftd/121:34:411
17438992118,2cyclictest947-21sendmail-mta00:09:521
17438992116,4cyclictest1429-21apache200:20:411
17438992113,2cyclictest25751-21ssh23:59:271
17438992112,7cyclictest0-21swapper/122:37:141
1743899211,19cyclictest3959-21kworker/1:123:52:091
1743899211,13cyclictest30824-21latency_hist19:44:231
17438992111,3cyclictest0-21swapper/100:04:371
17438992110,4cyclictest0-21swapper/122:14:561
17438992110,4cyclictest0-21swapper/119:36:001
1743799217,8cyclictest0-21swapper/019:39:370
1743799215,10cyclictest0-21swapper/020:24:360
17437992120,1cyclictest0-21swapper/022:34:580
17437992117,3cyclictest17435-21cyclictest21:54:450
17437992110,8cyclictest0-21swapper/019:25:470
17437992110,7cyclictest0-21swapper/023:50:140
2884422010,1sleep00-21swapper/021:02:020
1743899202,13cyclictest0-21swapper/100:18:511
17438992018,1cyclictest1429-21apache222:39:571
17438992013,3cyclictest0-21swapper/120:24:241
17438992010,7cyclictest0-21swapper/123:56:441
17438992010,7cyclictest0-21swapper/123:38:201
17438992010,5cyclictest0-21swapper/119:29:351
17438992010,4cyclictest0-21swapper/119:59:421
17438992010,3cyclictest0-21swapper/120:28:581
1743899200,5cyclictest0-21swapper/122:51:541
1743799203,11cyclictest0-21swapper/020:09:390
17437992017,1cyclictest81ktimersoftd/020:54:010
17437992016,1cyclictest0-21swapper/022:43:330
17437992010,5cyclictest0-21swapper/023:14:470
17437992010,5cyclictest0-21swapper/019:54:380
17437992010,3cyclictest0-21swapper/000:04:360
17438991915,3cyclictest599-21avahi-daemon20:16:071
17438991915,2cyclictest31008-21diskmemload21:45:491
17438991911,3cyclictest0-21swapper/120:59:201
17438991910,6cyclictest0-21swapper/123:14:451
1743799195,10cyclictest0-21swapper/020:19:330
1743799194,8cyclictest0-21swapper/000:24:430
17437991916,1cyclictest0-21swapper/019:30:180
17437991914,3cyclictest81ktimersoftd/021:24:360
17437991913,5cyclictest100150irq/106-eth1-rx22:19:390
17437991913,4cyclictest1429-21apache221:52:560
17437991911,5cyclictest100150irq/106-eth1-rx23:29:460
17437991910,7cyclictest0-21swapper/021:59:430
17437991910,3cyclictest0-21swapper/019:14:420
17437991910,2cyclictest0-21swapper/022:29:250
960321810,0sleep10-21swapper/120:11:351
1743899185,11cyclictest18202-21apache_volume23:04:351
1743899185,11cyclictest18202-21apache_volume23:04:351
17438991814,3cyclictest31008-21diskmemload22:10:101
17438991812,3cyclictest100150irq/106-eth1-rx20:09:091
17438991810,6cyclictest0-21swapper/121:54:361
17438991810,4cyclictest0-21swapper/119:24:381
17438991810,4cyclictest0-21swapper/119:19:351
17438991810,3cyclictest0-21swapper/122:19:401
1743899180,11cyclictest0-21swapper/121:04:151
1743799184,5cyclictest0-21swapper/021:04:340
1743799183,9cyclictest0-21swapper/023:04:350
1743799183,9cyclictest0-21swapper/023:04:350
1743799183,9cyclictest0-21swapper/019:46:430
17437991810,3cyclictest0-21swapper/020:29:440
17437991810,2cyclictest0-21swapper/023:47:220
17438991710,4cyclictest0-21swapper/119:44:531
1743799173,9cyclictest0-21swapper/020:54:440
1743799173,6cyclictest0-21swapper/020:14:450
17437991711,4cyclictest0-21swapper/021:20:210
17437991710,4cyclictest0-21swapper/021:48:180
17437991710,1cyclictest0-21swapper/019:59:340
1743799170,8cyclictest0-21swapper/020:44:420
3093021610,0sleep10-21swapper/121:08:501
1743899165,6cyclictest0-21swapper/120:44:351
17438991612,0cyclictest744-21snmpd20:50:311
1743799164,7cyclictest0-21swapper/020:34:340
1743799163,6cyclictest0-21swapper/019:49:420
17437991610,6cyclictest0-21swapper/020:09:230
17437991610,2cyclictest0-21swapper/023:59:360
17438991510,1cyclictest0-21swapper/119:11:421
17438991412,1cyclictest1429-21apache220:34:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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