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2026-05-08 - 05:56
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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 Fri May 08, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1914626946,18sleep10-21swapper/119:04:471
1931526746,17sleep00-21swapper/019:06:300
179722350,1sleep01978799cyclictest22:54:190
19788993030,0cyclictest0-21swapper/123:58:421
19787992910,0cyclictest0-21swapper/019:51:240
19788992727,0cyclictest0-21swapper/123:32:541
19788992719,5cyclictest19426-21apache200:03:381
19788992716,9cyclictest13164-21kworker/1:000:27:451
19788992710,12cyclictest0-21swapper/119:54:121
1978799271,25cyclictest3395-21ssh21:53:490
19787992710,16cyclictest0-21swapper/022:16:530
19788992610,10cyclictest0-21swapper/122:39:481
1978899260,23cyclictest27834-21ssh23:49:281
19787992615,8cyclictest100250irq/107-eth1-rx21:14:350
19788992523,1cyclictest13100-21/usr/sbin/munin22:49:201
19788992520,3cyclictest19426-21apache223:09:571
1978899250,25cyclictest0-21swapper/121:15:201
19788992418,5cyclictest20926-21munin-node20:50:211
1978899241,1cyclictest0-21swapper/121:53:271
19787992411,5cyclictest0-21swapper/022:34:200
19787992410,6cyclictest100250irq/107-eth1-rx23:17:020
1978899238,11cyclictest0-21swapper/122:19:131
1978899231,4cyclictest19574-21rm21:31:401
19788992310,4cyclictest0-21swapper/100:34:141
19788992310,2cyclictest0-21swapper/123:46:391
1978799239,13cyclictest0-21swapper/000:27:220
19787992323,0cyclictest81ktimersoftd/021:57:160
19787992322,1cyclictest19414-21apache223:02:320
19787992319,3cyclictest599-21avahi-daemon21:22:200
19787992310,1cyclictest0-21swapper/019:19:440
1978799230,20cyclictest6652-21ssh23:23:010
19788992219,3cyclictest20926-21munin-node20:29:201
19788992217,4cyclictest19426-21apache222:24:351
19788992215,5cyclictest19426-21apache222:44:451
19788992211,3cyclictest0-21swapper/122:10:181
19788992210,4cyclictest0-21swapper/122:54:021
19788992210,4cyclictest0-21swapper/122:09:001
1978799225,10cyclictest0-21swapper/019:14:170
19787992220,1cyclictest636-21nscd21:26:180
1978799221,7cyclictest0-21swapper/021:29:370
19787992212,3cyclictest0-21swapper/022:06:080
19787992210,7cyclictest0-21swapper/000:35:410
19787992210,6cyclictest0-21swapper/023:49:170
19787992210,6cyclictest0-21swapper/022:42:260
1465522210,0sleep00-21swapper/000:18:480
2829922110,0sleep00-21swapper/020:54:150
1978899213,10cyclictest0-21swapper/119:24:171
19788992119,1cyclictest19426-21apache223:07:551
19788992117,4cyclictest19426-21apache223:19:131
19788992110,6cyclictest636-21nscd23:25:331
19788992110,3cyclictest0-21swapper/123:39:051
19788992110,3cyclictest0-21swapper/122:38:171
1978799215,12cyclictest0-21swapper/020:44:150
19787992114,4cyclictest0-21swapper/023:09:110
19787992110,6cyclictest0-21swapper/000:19:060
19787992110,5cyclictest0-21swapper/022:00:270
19787992110,5cyclictest0-21swapper/021:39:320
1978799210,11cyclictest0-21swapper/022:10:540
1644022110,0sleep00-21swapper/022:53:420
1978899203,9cyclictest12194-21cron20:14:001
1978899203,9cyclictest0-21swapper/119:29:101
19788992010,6cyclictest0-21swapper/120:19:011
19788992010,6cyclictest0-21swapper/119:14:141
19788992010,3cyclictest0-21swapper/119:09:111
19788992010,3cyclictest0-21swapper/100:18:171
19788992010,2cyclictest0-21swapper/121:59:111
1978799206,7cyclictest0-21swapper/022:29:150
1978799203,10cyclictest1264-21munin-run23:59:000
1978799202,13cyclictest0-21swapper/021:34:190
19787992020,0cyclictest0-21swapper/023:24:220
19787992019,1cyclictest19426-21apache221:09:060
19787992017,2cyclictest20305-21ssh23:39:470
19787992017,1cyclictest0-21swapper/000:10:350
19787992014,6cyclictest19414-21apache223:48:570
19787992010,7cyclictest0-21swapper/000:02:570
19787992010,5cyclictest0-21swapper/021:47:250
19787992010,4cyclictest0-21swapper/000:31:260
19787992010,3cyclictest0-21swapper/023:05:060
1978899194,9cyclictest0-21swapper/119:59:091
1978899194,9cyclictest0-21swapper/119:59:091
19788991918,1cyclictest0-21swapper/121:44:361
19788991914,3cyclictest19426-21apache221:19:051
19788991910,5cyclictest0-21swapper/122:16:051
19788991910,5cyclictest0-21swapper/120:04:101
19788991910,4cyclictest0-21swapper/121:09:081
19788991910,1cyclictest0-21swapper/120:54:081
19788991910,1cyclictest0-21swapper/100:30:521
1978799197,8cyclictest964-21diskmemload22:28:220
1978799195,7cyclictest0-21swapper/020:04:180
19787991910,4cyclictest0-21swapper/023:34:100
19787991910,3cyclictest0-21swapper/023:30:220
19787991910,3cyclictest0-21swapper/019:39:000
19787991910,2cyclictest0-21swapper/021:04:110
305072180,3sleep10-21swapper/122:29:151
1978899182,9cyclictest0-21swapper/120:59:151
1978899182,9cyclictest0-21swapper/120:44:111
19788991817,0cyclictest10766-21kworker/1:219:21:011
19788991817,0cyclictest0-21swapper/121:27:101
19788991816,1cyclictest19785-21cyclictest20:24:531
19788991811,5cyclictest0-21swapper/123:14:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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