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2026-07-04 - 19:34
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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 Sat Jul 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33002890,1sleep10-21swapper/107:53:451
129212730,0sleep00-21swapper/011:26:330
1729027057,8sleep10-21swapper/107:06:121
1712526335,23sleep00-21swapper/007:04:260
17696993330,2cyclictest0-21swapper/111:46:351
17695993111,5cyclictest0-21swapper/010:14:310
17695993110,1cyclictest0-21swapper/011:33:130
17695993010,1cyclictest0-21swapper/010:46:390
17696992927,1cyclictest24-21ksoftirqd/109:53:301
17696992827,1cyclictest24-21ksoftirqd/107:43:301
17695992824,2cyclictest26233-21kworker/u4:011:10:020
17696992725,1cyclictest23661-21/usr/sbin/munin10:18:481
17695992725,1cyclictest27596-21apache211:58:190
17695992710,0cyclictest0-21swapper/009:45:230
1769699263,21cyclictest0-21swapper/112:02:561
1769699263,1cyclictest91rcu_preempt07:36:281
17696992625,0cyclictest24-21ksoftirqd/112:28:511
17695992624,1cyclictest24803-21ssh10:59:560
17695992610,2cyclictest0-21swapper/009:55:100
1769599260,0cyclictest0-21swapper/009:21:550
1769699255,6cyclictest91rcu_preempt10:13:431
17696992523,1cyclictest24-21ksoftirqd/109:08:311
1769699252,22cyclictest0-21swapper/111:33:121
17696992518,6cyclictest947-21sendmail-mta12:13:491
17695992510,1cyclictest0-21swapper/010:24:060
1769599250,0cyclictest0-21swapper/011:48:440
17696992423,0cyclictest24-21ksoftirqd/112:18:481
1769699242,10cyclictest0-21swapper/112:06:031
17696992419,2cyclictest0-21swapper/110:56:111
1769699241,5cyclictest91rcu_preempt07:18:461
17696992411,4cyclictest91rcu_preempt10:30:161
1769699240,4cyclictest91rcu_preempt09:54:261
1769699240,3cyclictest91rcu_preempt09:42:041
1769699240,2cyclictest91rcu_preempt09:36:511
17695992423,0cyclictest81ktimersoftd/012:33:430
17695992419,1cyclictest0-21swapper/009:13:570
17695992410,2cyclictest0-21swapper/009:40:250
1769599240,17cyclictest0-21swapper/012:26:220
17696992322,1cyclictest27596-21apache212:25:561
17696992322,1cyclictest27576-21apache209:10:291
1769699231,2cyclictest91rcu_preempt07:28:481
17696992310,10cyclictest0-21swapper/108:58:461
1769699230,3cyclictest24-21ksoftirqd/109:13:501
1769599232,13cyclictest0-21swapper/010:53:480
17695992311,7cyclictest100150irq/106-eth1-rx10:41:510
17695992310,5cyclictest0-21swapper/011:34:120
17695992310,1cyclictest0-21swapper/008:48:150
1769599230,4cyclictest0-21swapper/009:59:280
1769599230,1cyclictest0-21swapper/010:04:170
1787222210,0sleep00-21swapper/010:10:340
1769699229,11cyclictest24-21ksoftirqd/112:33:351
1769699226,15cyclictest24-21ksoftirqd/110:03:381
17696992221,0cyclictest24-21ksoftirqd/108:18:501
17696992221,0cyclictest24-21ksoftirqd/108:18:301
17696992220,1cyclictest744-21snmpd11:13:241
17696992220,1cyclictest24-21ksoftirqd/110:39:591
17696992215,6cyclictest24-21ksoftirqd/111:14:551
17696992210,9cyclictest0-21swapper/110:33:441
17696992210,9cyclictest0-21swapper/110:11:591
17696992210,2cyclictest91rcu_preempt11:03:331
1769699220,21cyclictest8538-21tr09:58:451
1769599224,12cyclictest0-21swapper/007:38:430
17695992222,0cyclictest100250irq/107-eth1-rx09:31:570
17695992210,7cyclictest0-21swapper/011:45:200
17695992210,5cyclictest0-21swapper/010:28:430
17695992210,2cyclictest0-21swapper/009:52:510
1769599220,1cyclictest0-21swapper/012:04:160
1769599220,1cyclictest0-21swapper/009:34:400
1769699217,8cyclictest0-21swapper/109:31:031
1769699213,2cyclictest5889-21python07:58:501
1769699212,3cyclictest0-21swapper/108:08:451
17696992121,0cyclictest0-21swapper/107:13:291
17696992121,0cyclictest0-21swapper/107:13:291
17696992120,0cyclictest24-21ksoftirqd/110:58:511
17696992120,0cyclictest24-21ksoftirqd/110:51:501
17696992112,7cyclictest0-21swapper/111:23:421
17696992110,8cyclictest0-21swapper/110:43:531
17696992110,5cyclictest0-21swapper/111:33:421
17696992110,2cyclictest0-21swapper/108:03:421
1769699210,1cyclictest0-21swapper/109:27:271
1769599212,18cyclictest0-21swapper/007:14:040
17695992119,1cyclictest6604-21/usr/sbin/munin11:58:500
1769699202,2cyclictest91rcu_preempt08:28:421
17696992018,1cyclictest2718-21ls11:53:521
17696992016,1cyclictest24-21ksoftirqd/109:23:241
1769699200,19cyclictest30768-21irqstats11:48:461
1769599205,8cyclictest0-21swapper/009:03:450
1769599204,8cyclictest0-21swapper/008:58:500
1769599203,10cyclictest0-21swapper/008:53:460
17695992018,2cyclictest27576-21apache208:03:440
17695992018,1cyclictest27576-21apache212:13:250
17695992015,4cyclictest0-21swapper/012:17:260
17695992015,3cyclictest100150irq/106-eth1-rx10:34:200
17695992010,7cyclictest0-21swapper/011:04:170
17695992010,4cyclictest0-21swapper/008:48:420
17695992010,3cyclictest0-21swapper/011:38:430
1769599200,2cyclictest0-21swapper/009:23:390
200621910,1sleep00-21swapper/009:10:560
1769699192,8cyclictest0-21swapper/109:43:461
1769699192,2cyclictest0-21swapper/110:24:411
17696991918,1cyclictest24-21ksoftirqd/112:11:291
17696991911,4cyclictest0-21swapper/111:38:441
17696991910,3cyclictest0-21swapper/107:23:451
1769599198,4cyclictest0-21swapper/010:52:200
1769599195,3cyclictest28833-21ls07:33:500
17695991914,4cyclictest21408-21apache207:08:450
17695991914,4cyclictest21408-21apache207:08:450
1769599191,15cyclictest0-21swapper/011:15:460
17695991911,2cyclictest25987-21if_eth307:28:460
17695991911,2cyclictest0-21swapper/007:43:460
17695991910,4cyclictest0-21swapper/008:13:510
17695991910,2cyclictest0-21swapper/011:19:220
17695991910,0cyclictest0-21swapper/012:20:090
869321810,6sleep00-21swapper/008:08:410
1769699186,9cyclictest0-21swapper/108:33:411
17696991810,6cyclictest0-21swapper/108:38:431
17696991810,4cyclictest0-21swapper/108:43:431
1769599183,7cyclictest0-21swapper/007:48:420
17695991810,6cyclictest0-21swapper/008:23:420
17695991810,5cyclictest0-21swapper/008:01:120
17695991810,3cyclictest0-21swapper/010:18:330
17696991715,1cyclictest24-21ksoftirqd/111:18:441
17696991713,2cyclictest27576-21apache207:49:471
17696991710,3cyclictest0-21swapper/108:53:421
1769599173,6cyclictest0-21swapper/008:38:430
17695991712,3cyclictest744-21snmpd12:29:150
17695991710,2cyclictest0-21swapper/008:33:410
17695991710,2cyclictest0-21swapper/007:18:410
1769699168,7cyclictest0-21swapper/108:23:471
17696991610,2cyclictest0-21swapper/107:13:471
17696991610,0cyclictest0-21swapper/108:50:371
17695991610,2cyclictest0-21swapper/007:53:420
17695991610,1cyclictest0-21swapper/008:18:440
1769599160,9cyclictest0-21swapper/008:28:490
1769699150,4cyclictest0-21swapper/107:39:181
17695991310,1cyclictest0-21swapper/007:23:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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