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2026-08-25 - 03:58
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Tue Aug 25, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1652126956,8sleep10-21swapper/119:03:391
1650526754,8sleep00-21swapper/019:03:300
17125993332,1cyclictest0-21swapper/123:10:171
1712499310,30cyclictest0-21swapper/022:10:430
17125992810,13cyclictest0-21swapper/121:40:361
17124992828,0cyclictest0-21swapper/019:25:020
17125992710,12cyclictest0-21swapper/123:54:551
17124992711,6cyclictest0-21swapper/023:43:550
17124992710,16cyclictest0-21swapper/019:39:230
17125992626,0cyclictest0-21swapper/122:18:521
17125992618,6cyclictest17263-21apache222:49:231
1712599260,5cyclictest0-21swapper/121:56:151
1712599260,19cyclictest22871-21kworker/u4:100:33:221
1712599260,0cyclictest10806-21kworker/u4:221:20:241
1712499268,17cyclictest0-21swapper/022:42:170
17124992625,1cyclictest0-21swapper/022:19:340
17124992610,5cyclictest0-21swapper/023:18:140
1712499260,25cyclictest0-21swapper/000:00:450
1712599252,19cyclictest8099-21grep22:53:211
17124992512,10cyclictest30752-21diskmemload00:15:150
1712499250,24cyclictest0-21swapper/000:20:350
17125992420,3cyclictest0-21swapper/123:22:441
17125992418,3cyclictest17263-21apache223:03:111
1712599240,11cyclictest0-21swapper/120:53:231
1712499242,1cyclictest21075-21wc21:38:240
17124992421,1cyclictest17230-21apache200:25:200
17124992410,4cyclictest0-21swapper/022:23:220
1712599238,14cyclictest17263-21apache223:26:241
17125992323,0cyclictest17263-21apache219:56:441
1712599231,2cyclictest0-21swapper/123:52:371
17125992311,10cyclictest0-21swapper/120:28:161
1712599231,0cyclictest0-21swapper/121:36:581
1712499231,21cyclictest0-21swapper/022:48:150
17124992311,6cyclictest0-21swapper/021:51:490
17124992310,13cyclictest0-21swapper/019:47:190
17124992310,12cyclictest0-21swapper/020:06:590
241142220,2sleep10-21swapper/122:29:041
1712599224,8cyclictest11698-21/usr/sbin/munin22:58:221
17125992218,4cyclictest17263-21apache223:30:151
17125992218,3cyclictest26736-21munin-run21:48:041
17125992215,2cyclictest231ktimersoftd/122:43:041
17125992210,5cyclictest0-21swapper/100:13:401
17125992210,11cyclictest590-21rs:main1
17124992218,4cyclictest0-21swapper/000:30:370
17124992218,2cyclictest81ktimersoftd/000:08:000
17124992211,5cyclictest8636-21tail22:53:250
17124992210,4cyclictest0-21swapper/019:28:220
325382210,1sleep132543-21apache_processe19:48:151
1712599214,11cyclictest0-21swapper/122:43:191
17125992119,1cyclictest0-21swapper/100:06:081
17125992117,4cyclictest17230-21apache222:02:251
17125992117,1cyclictest0-21swapper/123:58:211
17125992110,4cyclictest0-21swapper/121:08:481
17125992110,4cyclictest0-21swapper/120:23:161
17124992121,0cyclictest17230-21apache221:16:230
17124992120,1cyclictest0-21swapper/023:28:430
1712499211,5cyclictest0-21swapper/023:27:190
17124992110,4cyclictest0-21swapper/021:57:370
17124992110,1cyclictest0-21swapper/023:09:590
17124992110,1cyclictest0-21swapper/021:27:420
1712499210,2cyclictest0-21swapper/000:08:050
1712599204,9cyclictest0-21swapper/123:41:361
1712599204,6cyclictest9117-21kernelversion22:08:181
1712599201,9cyclictest0-21swapper/100:28:201
17125992017,3cyclictest0-21swapper/121:13:201
17125992012,0cyclictest20648-21ssh22:24:081
17125992010,6cyclictest0-21swapper/121:23:501
17125992010,4cyclictest0-21swapper/120:18:171
17125992010,3cyclictest0-21swapper/100:09:201
17125992010,0cyclictest0-21swapper/121:30:541
1712499204,8cyclictest0-21swapper/022:28:170
1712499203,8cyclictest0-21swapper/020:08:160
1712499203,11cyclictest17310-21perf23:58:030
17124992010,3cyclictest0-21swapper/021:43:150
17124992010,2cyclictest0-21swapper/022:06:520
17124992010,2cyclictest0-21swapper/020:38:040
278221910,0sleep00-21swapper/023:33:130
1712599194,12cyclictest0-21swapper/119:28:151
1712599193,12cyclictest0-21swapper/119:09:481
1712599192,11cyclictest0-21swapper/121:03:211
17125991914,4cyclictest17263-21apache219:35:321
17125991910,4cyclictest0-21swapper/119:58:171
1712599190,5cyclictest0-21swapper/123:34:571
1712499197,9cyclictest0-21swapper/019:18:240
1712499195,6cyclictest636-21nscd22:47:360
17124991919,0cyclictest0-21swapper/021:34:110
17124991912,6cyclictest0-21swapper/019:36:570
17124991911,0cyclictest1199-21runrttasks20:29:110
17124991910,9cyclictest0-21swapper/019:54:150
17124991910,5cyclictest0-21swapper/023:13:170
17124991910,4cyclictest100150irq/106-eth1-rx23:48:300
17124991910,1cyclictest0-21swapper/021:31:010
17124991910,1cyclictest0-21swapper/021:12:260
1712499190,15cyclictest0-21swapper/022:01:020
1890021810,1sleep10-21swapper/120:34:481
1712599185,11cyclictest0-21swapper/119:13:211
1712599183,9cyclictest0-21swapper/120:38:231
1712599182,10cyclictest0-21swapper/122:06:081
1712599181,10cyclictest958-21/usr/sbin/munin00:23:161
17125991810,6cyclictest0-21swapper/123:15:041
17125991810,3cyclictest0-21swapper/122:33:141
17125991810,3cyclictest0-21swapper/122:13:241
1712499185,10cyclictest0-21swapper/022:13:160
1712499181,11cyclictest0-21swapper/020:48:040
17124991810,3cyclictest0-21swapper/021:20:530
17124991810,2cyclictest0-21swapper/022:59:200
17124991810,2cyclictest0-21swapper/020:48:130
17124991810,1cyclictest0-21swapper/019:58:150
17124991810,1cyclictest0-21swapper/000:35:050
1712599178,8cyclictest0-21swapper/120:58:161
1712599174,7cyclictest0-21swapper/120:03:161
1712599174,6cyclictest0-21swapper/121:50:281
1712599174,6cyclictest0-21swapper/100:18:121
17125991716,1cyclictest17230-21apache220:13:571
17125991714,3cyclictest3402-21munin-node20:52:061
17125991710,4cyclictest0-21swapper/123:45:241
1712499174,9cyclictest0-21swapper/020:58:220
1712499173,8cyclictest24479-21snmpd23:03:220
17124991717,0cyclictest0-21swapper/020:24:400
17124991714,2cyclictest17263-21apache219:11:230
17124991710,7cyclictest0-21swapper/020:55:310
17124991710,5cyclictest0-21swapper/020:21:120
17124991710,3cyclictest0-21swapper/023:39:530
1712599166,8cyclictest0-21swapper/119:43:171
1712599163,8cyclictest0-21swapper/119:38:211
1712599163,7cyclictest0-21swapper/120:08:121
17125991611,1cyclictest0-21swapper/119:18:161
1712499165,3cyclictest29700-21/usr/sbin/munin21:03:200
17124991610,5cyclictest100150irq/106-eth1-rx22:33:500
17124991610,3cyclictest0-21swapper/020:13:170
17124991610,3cyclictest0-21swapper/019:48:210
17125991510,3cyclictest100250irq/107-eth1-rx19:23:221
17124991412,2cyclictest0-21swapper/019:14:230
17124991410,0cyclictest0-21swapper/020:38:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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