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2026-08-10 - 01:39
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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 Sun Aug 09, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1810027057,8sleep10-21swapper/107:04:041
1841026957,8sleep00-21swapper/007:07:190
8332660,2sleep00-21swapper/009:50:030
284502610,3sleep01867799cyclictest11:09:190
18678993736,1cyclictest0-21swapper/109:57:171
18678993410,23cyclictest0-21swapper/111:35:301
1867899290,28cyclictest28452-21kworker/1:007:47:061
18677992910,14cyclictest0-21swapper/012:10:520
18677992810,14cyclictest0-21swapper/012:03:270
18678992721,4cyclictest28499-21apache207:42:551
18678992710,3cyclictest0-21swapper/111:08:361
1867799270,2cyclictest0-21swapper/009:39:220
1867899268,17cyclictest28452-21kworker/1:012:29:261
1867899260,25cyclictest0-21swapper/109:31:381
18677992626,0cyclictest0-21swapper/010:54:090
1867899256,18cyclictest28452-21kworker/1:012:17:381
1867899253,20cyclictest0-21swapper/109:50:121
18678992524,1cyclictest0-21swapper/108:34:051
18678992510,0cyclictest0-21swapper/109:10:391
1867799253,21cyclictest0-21swapper/011:06:150
18677992518,4cyclictest28525-21apache210:24:430
18677992510,7cyclictest0-21swapper/012:22:340
1867899242,5cyclictest0-21swapper/109:17:201
18678992419,3cyclictest231ktimersoftd/110:33:311
18678992417,6cyclictest27621-21ssh12:34:381
18678992416,7cyclictest28499-21apache210:11:501
18678992411,4cyclictest0-21swapper/112:11:271
18678992410,6cyclictest0-21swapper/111:19:071
18678992410,6cyclictest0-21swapper/111:13:271
18677992418,5cyclictest28525-21apache209:55:390
1867899234,13cyclictest0-21swapper/107:28:301
18678992321,1cyclictest100250irq/107-eth1-rx11:48:341
18678992314,4cyclictest28499-21apache211:05:221
18678992311,6cyclictest26442-21kworker/u4:009:18:521
18678992310,1cyclictest0-21swapper/112:22:071
18677992323,0cyclictest0-21swapper/008:53:120
18677992316,5cyclictest30404-21sh09:47:090
18677992310,4cyclictest0-21swapper/011:53:230
18677992310,4cyclictest0-21swapper/009:23:300
18677992310,0cyclictest0-21swapper/009:16:440
1867799230,11cyclictest24996-21/usr/sbin/munin07:23:260
231792220,0sleep00-21swapper/010:19:310
1867899224,9cyclictest0-21swapper/111:23:341
18678992218,3cyclictest28499-21apache210:01:161
18678992217,3cyclictest18675-21cyclictest07:58:141
18678992216,3cyclictest28525-21apache210:30:481
1867799224,11cyclictest0-21swapper/009:28:250
18677992216,4cyclictest28499-21apache210:05:260
1867799221,5cyclictest0-21swapper/010:43:480
18677992210,1cyclictest0-21swapper/011:19:120
1867799220,9cyclictest0-21swapper/008:53:250
1867799220,21cyclictest0-21swapper/012:14:420
1867899218,12cyclictest28452-21kworker/1:008:15:421
18678992118,2cyclictest12316-21ssh10:05:241
1867899211,4cyclictest0-21swapper/111:29:011
18678992112,7cyclictest28525-21apache212:02:481
18678992110,11cyclictest0-21swapper/110:48:011
18678992110,10cyclictest0-21swapper/110:38:321
18678992110,10cyclictest0-21swapper/110:38:321
1867899210,20cyclictest28452-21kworker/1:009:39:441
1867799218,6cyclictest167-21systemd-journal07:53:320
1867799213,7cyclictest32586-21diskmemload12:33:310
18677992120,1cyclictest28499-21apache210:12:560
18677992110,2cyclictest0-21swapper/010:13:240
18677992110,11cyclictest0-21swapper/011:44:230
1867899205,5cyclictest18396-21apache_processe12:23:241
1867899202,4cyclictest0-21swapper/111:47:011
18678992018,2cyclictest28499-21apache210:53:041
18678992018,2cyclictest0-21swapper/107:13:261
1867899201,5cyclictest0-21swapper/110:25:251
18678992015,3cyclictest17652-21ssh10:13:141
18678992010,7cyclictest28452-21kworker/1:008:24:121
18678992010,5cyclictest0-21swapper/108:22:311
1867899200,5cyclictest0-21swapper/109:24:371
1867899200,17cyclictest28910-21apache_processe08:58:241
1867799202,8cyclictest0-21swapper/007:38:340
18677992010,9cyclictest0-21swapper/012:28:330
18677992010,6cyclictest0-21swapper/011:13:330
1867799200,9cyclictest0-21swapper/010:30:310
2727121910,0sleep10-21swapper/109:43:261
1867899197,9cyclictest28452-21kworker/1:008:39:481
1867899192,13cyclictest0-21swapper/110:58:231
18678991917,1cyclictest17279-21sh10:54:521
18678991914,1cyclictest28562-21sshd08:56:381
1867899191,1cyclictest0-21swapper/112:04:281
18678991911,6cyclictest28525-21apache209:35:151
1867799195,10cyclictest0-21swapper/010:38:280
1867799195,10cyclictest0-21swapper/010:38:280
1867799194,3cyclictest24479-21snmpd10:37:160
1867799193,8cyclictest0-21swapper/011:48:320
18677991919,0cyclictest28525-21apache211:36:470
18677991916,3cyclictest81ktimersoftd/012:23:320
18677991916,2cyclictest2135-21apache207:15:130
18677991916,1cyclictest0-21swapper/011:25:010
18677991911,2cyclictest0-21swapper/009:58:260
1867799191,11cyclictest28907-21/usr/sbin/munin08:58:240
18677991910,4cyclictest0-21swapper/007:18:300
18677991910,1cyclictest0-21swapper/008:36:180
18677991910,1cyclictest0-21swapper/008:18:500
18677991910,0cyclictest0-21swapper/012:03:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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