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2026-04-12 - 04:01
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Sun Apr 12, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210027057,8sleep10-21swapper/119:05:301
230826957,8sleep00-21swapper/019:07:400
2635993310,22cyclictest0-21swapper/123:03:421
2635993225,7cyclictest0-21swapper/100:09:591
2634993110,10cyclictest0-21swapper/021:33:380
2635993030,0cyclictest0-21swapper/122:09:091
263599300,1cyclictest0-21swapper/123:48:171
2634993020,3cyclictest18030-21pmu-power21:54:300
2634992828,0cyclictest0-21swapper/021:19:420
263599271,4cyclictest26025-21ssh00:23:491
263599270,2cyclictest27728-21/usr/sbin/munin22:54:271
263599270,25cyclictest12450-21kworker/u4:121:56:271
263599270,18cyclictest4875-21ssh22:21:391
2634992710,8cyclictest100250irq/107-eth1-rx00:19:150
2634992710,6cyclictest0-21swapper/022:24:130
263499262,7cyclictest0-21swapper/023:38:590
263499262,20cyclictest0-21swapper/022:16:510
2634992610,5cyclictest0-21swapper/022:01:110
263599256,18cyclictest0-21swapper/123:15:371
2635992523,1cyclictest25434-21ssh21:19:401
2635992424,0cyclictest0-21swapper/122:38:011
2635992410,2cyclictest0-21swapper/100:34:221
263599240,1cyclictest0-21swapper/122:51:501
2634992424,0cyclictest0-21swapper/020:39:240
2634992419,4cyclictest11772-21apache220:53:380
263499240,24cyclictest0-21swapper/000:11:580
2850322310,1sleep10-21swapper/100:26:111
2635992319,2cyclictest11782-21apache223:04:391
2635992310,7cyclictest0-21swapper/121:49:501
2634992320,2cyclictest81ktimersoftd/000:04:220
2634992320,2cyclictest31554-21latency23:44:260
2634992318,4cyclictest11772-21apache223:23:410
263499231,2cyclictest0-21swapper/023:29:310
2634992312,4cyclictest81ktimersoftd/023:07:590
2634992311,5cyclictest0-21swapper/019:54:300
2634992310,11cyclictest100150irq/106-eth1-rx00:35:290
618122210,1sleep10-21swapper/119:17:471
263599223,13cyclictest0-21swapper/120:29:261
2635992210,5cyclictest0-21swapper/123:54:251
2635992210,10cyclictest0-21swapper/121:31:131
263499228,8cyclictest7-21ksoftirqd/000:24:250
2635992120,1cyclictest11772-21apache221:09:181
2635992119,1cyclictest25736-21apache_volume20:09:231
2635992117,3cyclictest802-21apache220:23:121
2635992114,5cyclictest0-21swapper/123:40:461
2635992110,7cyclictest12450-21kworker/u4:122:30:341
2635992110,7cyclictest0-21swapper/121:24:321
263599210,20cyclictest0-21swapper/121:37:251
263599210,16cyclictest0-21swapper/122:01:581
263499215,15cyclictest0-21swapper/020:23:090
263499214,9cyclictest0-21swapper/022:56:040
263499214,11cyclictest0-21swapper/022:44:230
2634992113,3cyclictest0-21swapper/021:35:110
2634992110,6cyclictest0-21swapper/022:59:520
2634992110,6cyclictest0-21swapper/022:39:300
2634992110,3cyclictest0-21swapper/021:52:300
2634992110,10cyclictest0-21swapper/020:54:130
229072219,0sleep00-21swapper/021:17:160
783122010,0sleep10-21swapper/122:25:081
401922010,0sleep00-21swapper/019:10:170
263599204,8cyclictest0-21swapper/119:29:291
263599203,9cyclictest0-21swapper/119:24:261
2635992020,0cyclictest0-21swapper/119:36:401
2635992018,2cyclictest11772-21apache200:09:081
2635992018,2cyclictest0-21swapper/122:47:441
2635992014,3cyclictest11782-21apache223:38:111
2635992010,6cyclictest0-21swapper/123:24:281
2635992010,4cyclictest0-21swapper/122:14:551
2635992010,4cyclictest0-21swapper/119:09:221
2635992010,3cyclictest0-21swapper/120:44:291
2635992010,2cyclictest0-21swapper/122:09:321
263599200,7cyclictest0-21swapper/123:49:231
263499204,8cyclictest0-21swapper/023:39:280
2634992019,0cyclictest802-21apache219:52:230
2634992017,2cyclictest802-21apache200:16:590
2634992014,2cyclictest12076-21sh22:31:540
2634992010,4cyclictest0-21swapper/021:13:190
2634992010,3cyclictest0-21swapper/020:44:290
2634992010,3cyclictest0-21swapper/019:39:300
2634992010,1cyclictest0-21swapper/022:12:330
2634992010,0cyclictest0-21swapper/023:19:110
263599193,11cyclictest0-21swapper/119:54:261
2635991917,1cyclictest32660-21ls20:24:321
2635991917,1cyclictest16243-21diskmemload21:44:331
2635991917,1cyclictest11772-21apache200:29:191
2635991916,2cyclictest636-21nscd21:04:291
2635991914,1cyclictest8478-21ssh23:12:071
2635991913,3cyclictest16417-1kworker/u5:021:14:201
2635991910,4cyclictest0-21swapper/120:34:241
2635991910,2cyclictest0-21swapper/121:40:221
263499195,10cyclictest0-21swapper/023:54:330
2634991913,3cyclictest100150irq/106-eth1-rx00:33:070
2634991911,8cyclictest0-21swapper/021:27:290
2634991911,6cyclictest652-21nscd22:37:560
2634991910,1cyclictest0-21swapper/022:22:310
263499190,1cyclictest0-21swapper/019:29:260
263499190,16cyclictest0-21swapper/022:07:480
187322199,0sleep10-21swapper/122:40:221
263599188,9cyclictest0-21swapper/119:39:321
263599184,10cyclictest0-21swapper/120:51:221
2635991810,5cyclictest0-21swapper/123:29:311
2635991810,5cyclictest0-21swapper/123:19:291
2635991810,5cyclictest0-21swapper/120:39:241
2635991810,3cyclictest0-21swapper/120:59:231
263499187,6cyclictest31492-21apache_volume20:24:240
263499183,9cyclictest0-21swapper/020:59:320
263499183,9cyclictest0-21swapper/020:04:230
263499182,4cyclictest0-21swapper/021:47:120
263499182,11cyclictest0-21swapper/019:34:220
2634991815,3cyclictest744-21snmpd19:18:490
2634991810,7cyclictest0-21swapper/023:10:350
2634991810,7cyclictest0-21swapper/020:18:010
2634991810,5cyclictest100250irq/107-eth1-rx20:34:320
2634991810,4cyclictest0-21swapper/023:26:550
2634991810,4cyclictest0-21swapper/021:04:260
2634991810,3cyclictest0-21swapper/023:53:470
263599172,6cyclictest0-21swapper/120:14:231
2635991714,2cyclictest2632-21cyclictest20:03:391
263599171,14cyclictest0-21swapper/123:59:151
2635991710,4cyclictest0-21swapper/100:17:441
2635991710,3cyclictest0-21swapper/119:49:241
2635991710,2cyclictest0-21swapper/119:44:231
263499178,4cyclictest16243-21diskmemload21:40:460
2634991710,4cyclictest0-21swapper/023:59:250
2634991710,3cyclictest0-21swapper/019:19:260
2634991710,2cyclictest0-21swapper/020:09:320
1197721710,0sleep10-21swapper/120:54:531
2635991610,3cyclictest0-21swapper/120:04:331
2634991610,6cyclictest0-21swapper/019:29:070
2634991610,5cyclictest0-21swapper/019:44:230
2634991610,3cyclictest0-21swapper/019:59:220
2634991610,2cyclictest0-21swapper/022:49:230
2634991610,2cyclictest0-21swapper/020:30:500
2635991414,0cyclictest0-21swapper/119:19:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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