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2026-03-17 - 07:26
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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 Tue Mar 17, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263527259,8sleep10-21swapper/119:04:451
134626855,8sleep00-21swapper/019:04:260
274032630,0sleep10-21swapper/100:21:151
7892610,2sleep1328499cyclictest00:29:401
233652520,0sleep00-21swapper/022:44:420
3284993028,1cyclictest24971-21ssh22:48:131
3283993010,14cyclictest0-21swapper/021:09:260
328499281,14cyclictest0-21swapper/121:07:071
3284992810,6cyclictest0-21swapper/123:02:241
328499273,22cyclictest0-21swapper/100:10:461
3284992724,2cyclictest705-21ntpd21:18:251
3284992710,11cyclictest0-21swapper/123:49:431
3283992726,1cyclictest0-21swapper/019:30:530
3283992716,3cyclictest3281-21cyclictest23:18:570
3283992710,17cyclictest0-21swapper/022:06:210
3284992626,0cyclictest0-21swapper/122:19:491
328499260,21cyclictest6666-21ssh23:07:281
3283992624,1cyclictest3946-21hddtemp_smartct20:34:370
3283992620,4cyclictest7055-21apache220:43:540
3284992523,1cyclictest13068-21latency_hist20:59:231
328499250,24cyclictest29385-21/usr/sbin/munin23:39:431
3283992510,9cyclictest0-21swapper/023:31:430
3284992419,5cyclictest7055-21apache220:43:561
328499241,8cyclictest6984-21munin-run19:19:231
3284992410,4cyclictest0-21swapper/119:29:361
3284992410,3cyclictest0-21swapper/120:04:371
3284992410,0cyclictest0-21swapper/121:45:161
3283992420,3cyclictest7071-21apache222:24:520
3284992310,6cyclictest0-21swapper/123:23:431
3284992310,4cyclictest0-21swapper/100:25:011
328499230,21cyclictest167-21systemd-journal19:59:221
3283992310,8cyclictest0-21swapper/019:19:400
3283992310,7cyclictest0-21swapper/023:57:570
3283992310,6cyclictest0-21swapper/020:44:530
328499227,7cyclictest10550-21/usr/sbin/munin20:49:431
328499223,15cyclictest0-21swapper/119:09:401
3284992214,3cyclictest7071-21apache221:58:051
3284992210,7cyclictest0-21swapper/100:01:501
3284992210,6cyclictest0-21swapper/122:52:021
3284992210,3cyclictest0-21swapper/120:59:361
328499220,9cyclictest0-21swapper/100:34:351
328399227,5cyclictest0-21swapper/000:05:330
3283992221,1cyclictest7071-21apache223:40:300
3283992218,4cyclictest7055-21apache222:32:360
3283992214,4cyclictest100150irq/106-eth1-rx21:42:270
3283992210,7cyclictest0-21swapper/000:24:130
3283992210,6cyclictest0-21swapper/000:09:360
3283992210,4cyclictest0-21swapper/022:59:350
328499217,9cyclictest8096-21ssh23:54:351
328499216,7cyclictest11193-21munin-run23:14:231
328499215,9cyclictest0-21swapper/120:34:431
3284992117,3cyclictest7055-21apache222:43:171
328499211,12cyclictest0-21swapper/119:34:351
3284992110,5cyclictest0-21swapper/121:24:381
3284992110,4cyclictest0-21swapper/121:39:351
3284992110,4cyclictest0-21swapper/119:19:421
3283992110,4cyclictest0-21swapper/020:56:210
3283992110,2cyclictest0-21swapper/021:44:350
328399210,1cyclictest32585-21ssh22:59:070
328399210,17cyclictest0-21swapper/021:58:320
328499205,8cyclictest0-21swapper/100:14:401
328499205,7cyclictest29031-21latency_hist22:09:231
328499205,6cyclictest11046-21idleruntime-cro22:29:231
3284992017,1cyclictest7055-21apache219:49:251
3284992013,4cyclictest0-21swapper/121:29:321
3284992010,7cyclictest0-21swapper/123:24:391
3284992010,5cyclictest0-21swapper/122:34:231
3284992010,4cyclictest0-21swapper/119:44:341
3283992020,0cyclictest0-21swapper/022:43:370
3283992019,1cyclictest7071-21apache223:07:430
3283992014,5cyclictest7055-21apache222:15:510
3283992011,6cyclictest0-21swapper/023:09:420
3283992010,5cyclictest0-21swapper/021:14:340
3283992010,2cyclictest0-21swapper/022:21:200
3283992010,2cyclictest0-21swapper/021:34:350
3283992010,1cyclictest0-21swapper/023:50:320
3283992010,0cyclictest0-21swapper/023:47:540
328499197,7cyclictest0-21swapper/122:09:421
328499196,3cyclictest32197-21cpuspeed_turbos20:24:341
328499192,8cyclictest16921-21diskmemload23:14:361
3284991919,0cyclictest0-21swapper/121:10:071
3284991910,6cyclictest0-21swapper/121:36:321
3284991910,5cyclictest0-21swapper/120:09:381
3284991910,3cyclictest0-21swapper/122:34:481
3284991910,3cyclictest0-21swapper/121:21:581
328499190,3cyclictest32294-21kworker/u4:222:19:021
328499190,12cyclictest0-21swapper/121:59:361
328399199,4cyclictest1235-21grep00:29:430
328399195,6cyclictest0-21swapper/000:24:430
3283991915,2cyclictest3281-21cyclictest23:25:060
3283991914,4cyclictest7-21ksoftirqd/022:52:320
3283991910,3cyclictest0-21swapper/023:34:260
3283991910,3cyclictest0-21swapper/021:29:380
3283991910,3cyclictest0-21swapper/021:19:420
3283991910,3cyclictest0-21swapper/019:14:390
3283991910,1cyclictest0-21swapper/000:39:230
3283991910,1cyclictest0-21swapper/000:19:000
328399190,0cyclictest0-21swapper/020:33:550
2368221910,0sleep10-21swapper/123:30:081
328499182,14cyclictest0-21swapper/119:59:381
3284991812,4cyclictest0-21swapper/123:44:361
3284991810,5cyclictest0-21swapper/120:29:331
3284991810,4cyclictest0-21swapper/121:50:561
3284991810,4cyclictest0-21swapper/120:44:341
3284991810,4cyclictest0-21swapper/100:04:541
3284991810,3cyclictest0-21swapper/119:27:521
3284991810,1cyclictest0-21swapper/122:54:481
328399183,5cyclictest1519-21idleruntime-cro20:29:230
3283991813,4cyclictest100150irq/106-eth1-rx21:54:200
3283991811,1cyclictest0-21swapper/019:55:130
3283991810,5cyclictest100250irq/107-eth1-rx22:12:190
3283991810,5cyclictest0-21swapper/000:00:370
3283991810,4cyclictest0-21swapper/023:20:570
3283991810,4cyclictest0-21swapper/022:38:260
3283991810,4cyclictest0-21swapper/019:34:430
3283991810,3cyclictest0-21swapper/020:49:380
3001121810,0sleep00-21swapper/021:25:270
2807921810,0sleep00-21swapper/020:13:560
2518221810,2sleep00-21swapper/022:04:150
328499172,9cyclictest29722-21taskset20:16:071
3284991710,3cyclictest0-21swapper/123:39:011
3284991710,3cyclictest0-21swapper/120:19:361
3284991710,3cyclictest0-21swapper/119:39:341
328399171,7cyclictest0-21swapper/020:59:390
328399171,11cyclictest23682-21/usr/sbin/munin19:59:430
3283991710,3cyclictest0-21swapper/019:49:370
3162821710,0sleep00-21swapper/020:20:510
328399163,8cyclictest0-21swapper/019:44:400
3283991614,1cyclictest4981-21chrt19:13:420
3283991610,1cyclictest0-21swapper/020:04:340
328399153,5cyclictest0-21swapper/019:39:340
328399151,7cyclictest0-21swapper/020:19:230
3283991510,2cyclictest0-21swapper/019:24:410
328399150,11cyclictest16928-21perf21:09:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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