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2026-07-15 - 04:32
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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 Wed Jul 15, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2732927253,15sleep00-21swapper/019:04:270
2729527151,16sleep10-21swapper/119:04:061
128412710,1sleep10-21swapper/121:12:251
216122690,0sleep00-21swapper/000:03:440
27890993510,6cyclictest19427-21kworker/u4:222:56:451
27890993210,14cyclictest0-21swapper/122:40:371
2789099300,3cyclictest0-21swapper/122:09:431
27890992922,6cyclictest29886-21apache221:57:551
2789099290,1cyclictest0-21swapper/121:45:091
27889992929,0cyclictest0-21swapper/023:07:320
2788999290,19cyclictest100450irq/109-eth1-tx00:33:390
27890992816,12cyclictest0-21swapper/121:22:131
27890992813,14cyclictest0-21swapper/122:00:291
27890992810,7cyclictest0-21swapper/121:16:221
27890992727,0cyclictest0-21swapper/123:11:441
2789099270,1cyclictest0-21swapper/122:44:071
2788999275,21cyclictest0-21swapper/022:23:000
27890992625,0cyclictest0-21swapper/100:03:151
2789099260,4cyclictest5605-21ntp_states23:43:421
27889992610,1cyclictest0-21swapper/021:53:230
27890992510,6cyclictest0-21swapper/123:13:331
27890992410,3cyclictest0-21swapper/121:40:281
27889992417,4cyclictest363-21kworker/0:022:43:370
27889992410,9cyclictest0-21swapper/023:10:530
2788999240,23cyclictest0-21swapper/023:58:190
2788999240,20cyclictest9138-21diskmemload23:27:010
27890992314,3cyclictest0-21swapper/122:27:091
27889992321,1cyclictest29886-21apache200:20:440
27889992320,1cyclictest7-21ksoftirqd/022:06:470
27889992315,2cyclictest0-21swapper/021:10:160
27889992310,4cyclictest0-21swapper/000:23:460
27890992219,2cyclictest29912-21apache223:42:441
27890992216,4cyclictest29886-21apache222:37:311
27890992211,4cyclictest0-21swapper/120:28:391
27890992210,8cyclictest0-21swapper/119:53:461
27890992210,5cyclictest0-21swapper/121:50:131
2789099220,20cyclictest0-21swapper/122:14:441
2789099220,13cyclictest0-21swapper/119:28:371
2789099220,13cyclictest0-21swapper/100:03:431
2788999225,9cyclictest0-21swapper/019:08:380
2788999225,11cyclictest0-21swapper/019:48:360
27889992221,0cyclictest29886-21apache221:59:430
27889992219,2cyclictest7-21ksoftirqd/020:28:450
27889992217,5cyclictest29886-21apache223:32:510
27889992212,6cyclictest100250irq/107-eth1-rx21:33:170
27889992210,1cyclictest0-21swapper/023:18:170
2788999220,17cyclictest0-21swapper/000:32:130
2789099215,8cyclictest0-21swapper/120:03:351
2789099215,7cyclictest0-21swapper/122:28:361
27890992118,2cyclictest24479-21snmpd20:51:281
27890992118,2cyclictest231ktimersoftd/119:33:381
27890992117,4cyclictest0-21swapper/122:05:231
27890992116,4cyclictest29912-21apache223:51:121
27890992115,3cyclictest0-21swapper/100:37:581
27890992112,6cyclictest5389-21df_inode23:03:381
27890992112,5cyclictest0-21swapper/123:28:391
27890992110,9cyclictest0-21swapper/123:02:411
27890992110,1cyclictest0-21swapper/120:35:241
27890992110,1cyclictest0-21swapper/120:24:311
2789099210,2cyclictest0-21swapper/121:28:271
2789099210,19cyclictest0-21swapper/119:10:311
27889992116,4cyclictest802-21apache222:14:330
27889992112,4cyclictest15751-21taskset22:35:100
27889992111,5cyclictest0-21swapper/023:40:180
27889992110,8cyclictest0-21swapper/023:22:430
27889992110,6cyclictest0-21swapper/022:09:470
27889992110,6cyclictest0-21swapper/000:08:450
27889992110,4cyclictest0-21swapper/021:24:420
27889992110,2cyclictest0-21swapper/021:46:480
27890992011,5cyclictest32119-21sh00:18:321
27890992011,0cyclictest6127-1kworker/u5:000:28:401
27890992010,5cyclictest0-21swapper/123:22:431
27890992010,2cyclictest100450irq/109-eth1-tx22:19:381
2788999206,5cyclictest91rcu_preempt22:58:440
2788999204,10cyclictest0-21swapper/019:33:430
2788999203,9cyclictest0-21swapper/020:18:410
2788999203,10cyclictest0-21swapper/020:03:430
27889992019,1cyclictest14926-21munin-node20:42:320
27889992018,1cyclictest0-21swapper/000:17:480
27889992017,2cyclictest7099-21/usr/sbin/munin19:38:420
2788999201,0cyclictest9138-21diskmemload21:19:340
27889992010,6cyclictest0-21swapper/020:33:460
143922010,0sleep00-21swapper/020:48:200
2789099194,8cyclictest0-21swapper/123:33:381
2789099193,9cyclictest0-21swapper/119:23:361
2789099193,10cyclictest0-21swapper/120:53:471
27890991917,1cyclictest5799-21ssh00:24:491
27890991916,2cyclictest100150irq/106-eth1-rx20:45:321
27890991914,4cyclictest29886-21apache223:28:071
27890991910,6cyclictest0-21swapper/100:13:461
27890991910,5cyclictest0-21swapper/121:23:581
27890991910,4cyclictest0-21swapper/122:48:371
27890991910,4cyclictest0-21swapper/120:58:421
27890991910,4cyclictest0-21swapper/119:43:381
2788999194,5cyclictest0-21swapper/021:33:390
27889991917,1cyclictest0-21swapper/023:46:260
27889991917,1cyclictest0-21swapper/022:23:300
27889991912,4cyclictest81ktimersoftd/022:51:150
27889991911,3cyclictest100150irq/106-eth1-rx23:48:570
27889991910,7cyclictest0-21swapper/022:58:090
27889991910,6cyclictest0-21swapper/020:23:390
27889991910,4cyclictest0-21swapper/019:43:390
27889991910,3cyclictest0-21swapper/021:13:290
2788999190,12cyclictest0-21swapper/000:01:440
27890991810,5cyclictest231ktimersoftd/120:11:111
27890991810,4cyclictest0-21swapper/121:34:011
27890991810,4cyclictest0-21swapper/100:08:361
27890991810,3cyclictest0-21swapper/119:38:371
27890991810,1cyclictest0-21swapper/120:02:161
2789099180,12cyclictest0-21swapper/120:39:031
2788999186,6cyclictest0-21swapper/019:58:430
2788999184,9cyclictest0-21swapper/019:13:360
27889991816,1cyclictest27887-21cyclictest22:43:160
27889991810,4cyclictest0-21swapper/020:48:380
27889991810,3cyclictest0-21swapper/020:13:360
2789099176,8cyclictest0-21swapper/123:53:421
2789099174,7cyclictest0-21swapper/119:13:411
2789099172,10cyclictest0-21swapper/121:05:431
27890991710,1cyclictest0-21swapper/120:18:471
2789099170,5cyclictest0-21swapper/119:18:461
2788999179,5cyclictest2000-21missed_timers19:23:410
2788999173,7cyclictest0-21swapper/021:38:380
27889991717,0cyclictest0-21swapper/019:29:090
27889991711,1cyclictest0-21swapper/019:21:530
27889991710,5cyclictest0-21swapper/020:08:430
2788999170,8cyclictest4306-21ntp_states20:53:440
2789099162,7cyclictest0-21swapper/119:53:251
27890991610,3cyclictest0-21swapper/120:15:501
2788999164,9cyclictest0-21swapper/021:03:400
2788999164,8cyclictest0-21swapper/021:53:440
2788999162,9cyclictest0-21swapper/020:58:380
27889991610,2cyclictest0-21swapper/019:53:460
27889991610,1cyclictest0-21swapper/023:36:460
27889991610,0cyclictest0-21swapper/022:28:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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