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2026-03-11 - 11:40
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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 highest latencies:
System rackcslot2.osadl.org (updated Wed Mar 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75992750,0sleep00-21swapper/023:44:380
850227159,8sleep10-21swapper/119:09:201
248822670,1sleep00-21swapper/021:54:450
808026552,8sleep00-21swapper/019:04:550
156212640,0sleep10-21swapper/119:24:451
8694993325,4cyclictest7-21ksoftirqd/023:52:330
8694993210,22cyclictest0-21swapper/021:31:490
8695993125,4cyclictest13820-21apache222:23:031
8695993114,16cyclictest0-21swapper/100:08:521
8695993110,0cyclictest0-21swapper/121:09:371
8694993023,3cyclictest7-21ksoftirqd/023:14:250
8694993011,4cyclictest7-21ksoftirqd/022:24:350
8695992910,17cyclictest0-21swapper/121:27:531
869499292,3cyclictest91rcu_preempt21:36:060
8694992923,2cyclictest7-21ksoftirqd/000:00:150
8695992827,1cyclictest0-21swapper/123:09:501
869599282,24cyclictest0-21swapper/100:12:241
869499286,2cyclictest91rcu_preempt23:15:440
8694992823,3cyclictest7-21ksoftirqd/023:39:450
8694992818,5cyclictest7-21ksoftirqd/022:50:350
869499281,2cyclictest91rcu_preempt22:56:380
8695992719,2cyclictest11789-21ssh23:04:571
8695992710,9cyclictest0-21swapper/121:43:031
869499276,20cyclictest81ktimersoftd/000:38:110
8694992726,1cyclictest7-21ksoftirqd/019:59:430
8694992723,3cyclictest7-21ksoftirqd/000:16:260
8694992723,2cyclictest7-21ksoftirqd/022:36:510
8695992611,10cyclictest0-21swapper/120:03:101
8695992610,5cyclictest0-21swapper/121:23:021
869499268,11cyclictest7-21ksoftirqd/022:31:170
869499263,2cyclictest91rcu_preempt20:05:170
869499262,9cyclictest0-21swapper/023:34:370
8694992626,0cyclictest0-21swapper/022:15:090
8694992626,0cyclictest0-21swapper/020:20:330
8694992624,2cyclictest0-21swapper/021:18:110
8694992621,3cyclictest31321-21cut22:04:380
8694992618,5cyclictest7-21ksoftirqd/020:50:200
8694992618,3cyclictest7-21ksoftirqd/022:02:300
8694992610,2cyclictest91rcu_preempt19:30:580
8694992610,16cyclictest0-21swapper/019:47:430
8695992510,0cyclictest0-21swapper/121:51:391
869499252,4cyclictest0-21swapper/023:30:590
8694992512,9cyclictest7-21ksoftirqd/021:48:310
869499250,14cyclictest0-21swapper/023:24:460
869599246,8cyclictest0-21swapper/119:39:401
869599241,22cyclictest0-21swapper/123:59:451
8695992410,6cyclictest0-21swapper/120:09:461
8695992410,5cyclictest0-21swapper/119:34:391
869599240,8cyclictest0-21swapper/120:39:421
869599240,23cyclictest0-21swapper/121:45:091
8694992424,0cyclictest7-21ksoftirqd/019:24:460
8694992424,0cyclictest0-21swapper/019:18:560
8694992420,3cyclictest7-21ksoftirqd/000:06:430
8694992415,3cyclictest7-21ksoftirqd/019:10:000
8694992411,2cyclictest91rcu_preempt21:05:460
8694992410,2cyclictest91rcu_preempt20:29:370
869499240,1cyclictest91rcu_preempt23:54:370
869499240,10cyclictest0-21swapper/019:34:380
8695992323,0cyclictest0-21swapper/123:38:141
8695992323,0cyclictest0-21swapper/100:26:041
8695992322,0cyclictest0-21swapper/122:17:391
8695992314,2cyclictest0-21swapper/121:59:441
8695992310,7cyclictest0-21swapper/100:19:431
8695992310,13cyclictest0-21swapper/122:38:581
869499237,10cyclictest0-21swapper/021:24:360
8694992320,3cyclictest0-21swapper/022:44:180
8694992319,3cyclictest31763-21hddtemp_smartct00:19:390
869499230,1cyclictest6665-21apache_accesses22:59:350
869599226,9cyclictest9024-21apache_volume21:34:371
8695992221,1cyclictest13820-21apache223:50:281
8695992220,1cyclictest705-21ntpd00:16:031
8695992220,1cyclictest636-21nscd19:32:441
8695992218,3cyclictest13847-21apache222:31:461
8695992210,6cyclictest0-21swapper/122:57:441
8695992210,6cyclictest0-21swapper/120:19:391
869499227,8cyclictest7-21ksoftirqd/023:20:150
8694992219,2cyclictest27810-21basename19:59:250
8694992217,2cyclictest1199-21runrttasks19:40:060
8694992214,4cyclictest81ktimersoftd/020:54:360
8694992210,7cyclictest0-21swapper/020:24:390
8695992118,1cyclictest18021-21cron23:59:251
8695992117,2cyclictest13820-21apache220:31:211
8695992115,5cyclictest13820-21apache223:44:181
8695992115,3cyclictest0-21swapper/122:49:421
8695992110,6cyclictest0-21swapper/122:44:441
8695992110,6cyclictest0-21swapper/122:07:151
869599210,20cyclictest0-21swapper/121:15:071
869599210,12cyclictest10539-21cron23:49:251
869499212,8cyclictest0-21swapper/000:29:420
8694992119,1cyclictest25103-21df00:09:370
8694992118,2cyclictest32323-21interrupts20:09:410
8694992116,5cyclictest0-21swapper/022:09:440
8694992115,4cyclictest7-21ksoftirqd/000:29:030
869499211,1cyclictest91rcu_preempt21:23:460
8694992110,0cyclictest0-21swapper/022:23:030
869599205,10cyclictest0-21swapper/119:44:371
869599204,8cyclictest6364-21/usr/sbin/munin00:29:361
8695992020,0cyclictest231ktimersoftd/121:55:021
8695992015,0cyclictest231ktimersoftd/122:09:531
8695992011,5cyclictest0-21swapper/120:24:421
869599201,12cyclictest6666-21apache_accesses22:59:351
8695992010,6cyclictest0-21swapper/121:29:361
8695992010,4cyclictest0-21swapper/122:42:311
8695992010,4cyclictest0-21swapper/120:49:411
869599200,19cyclictest25329-21awk19:49:461
869599200,13cyclictest0-21swapper/120:44:421
8694992018,1cyclictest23217-21memory21:09:410
8694992018,1cyclictest11441-21python23:04:460
8694992017,2cyclictest18918-21grep20:59:370
8694992016,3cyclictest9536-21interrupts20:34:410
8694992010,9cyclictest7-21ksoftirqd/021:42:430
869599194,8cyclictest10741-21cron20:39:251
869599194,5cyclictest16717-21/usr/sbin/munin20:54:381
869599193,11cyclictest0-21swapper/121:04:381
8695991911,3cyclictest0-21swapper/123:25:201
8695991910,6cyclictest0-21swapper/119:54:361
8695991910,4cyclictest0-21swapper/100:35:171
8695991910,3cyclictest0-21swapper/123:14:271
8695991910,2cyclictest0-21swapper/123:32:381
8694991917,2cyclictest22333-21diskmemload21:52:010
8694991915,3cyclictest13334-21ntp_states19:19:430
8694991910,6cyclictest0-21swapper/022:44:400
1405521910,0sleep10-21swapper/119:21:131
8695991810,2cyclictest0-21swapper/123:23:121
869499184,7cyclictest13820-21apache219:49:370
8694991810,2cyclictest0-21swapper/020:14:380
869599173,5cyclictest167-21systemd-journal19:14:261
869599172,7cyclictest0-21swapper/119:14:361
8695991716,1cyclictest802-21apache220:16:001
8695991710,3cyclictest0-21swapper/120:59:351
8694991710,4cyclictest81ktimersoftd/020:39:390
8694991610,2cyclictest0-21swapper/020:44:380
869599151,8cyclictest0-21swapper/120:04:371
869599150,6cyclictest100250irq/107-eth1-rx22:24:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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