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2026-05-12 - 10:44
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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 Tue May 12, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324792770,0sleep132481-21sh23:54:101
2042926947,17sleep10-21swapper/119:04:171
2104526755,8sleep00-21swapper/019:04:560
21611993310,22cyclictest0-21swapper/019:44:030
21611993028,1cyclictest2791-21diskmemload23:44:120
21612992912,16cyclictest0-21swapper/122:53:541
2161299290,28cyclictest0-21swapper/123:04:021
2161299290,28cyclictest0-21swapper/123:04:021
2161299290,1cyclictest9794-21cat23:24:101
21611992923,5cyclictest11532-21apache221:53:490
2161199291,17cyclictest0-21swapper/022:04:100
21612992828,0cyclictest0-21swapper/121:23:371
2161299280,24cyclictest0-21swapper/121:44:101
21611992828,0cyclictest0-21swapper/022:19:300
21611992810,0cyclictest0-21swapper/023:24:180
21612992711,9cyclictest0-21swapper/100:00:401
21612992615,9cyclictest0-21swapper/122:54:301
21612992610,8cyclictest0-21swapper/121:41:261
21611992624,1cyclictest770-21irqbalance00:38:080
21611992619,5cyclictest744-21snmpd23:17:450
21611992610,3cyclictest0-21swapper/023:37:350
2161299250,1cyclictest0-21swapper/122:00:501
21611992521,4cyclictest11562-21apache221:58:300
21611992518,6cyclictest11532-21apache223:07:470
21611992518,6cyclictest11532-21apache223:07:470
21611992510,0cyclictest0-21swapper/022:43:480
21612992423,1cyclictest0-21swapper/122:48:321
21612992418,4cyclictest11532-21apache220:54:131
21612992412,7cyclictest0-21swapper/120:49:151
2161299241,22cyclictest0-21swapper/122:38:581
21611992415,3cyclictest0-21swapper/000:04:110
21611992410,14cyclictest0-21swapper/022:24:220
21612992321,1cyclictest0-21swapper/123:13:061
21612992310,4cyclictest0-21swapper/120:24:091
21611992323,0cyclictest0-21swapper/022:16:290
21611992321,2cyclictest11562-21apache200:23:460
21611992320,2cyclictest25059-21ssh00:27:420
21611992310,6cyclictest0-21swapper/023:30:110
2161299221,2cyclictest13700-21hddtemp_smartct23:29:111
21612992210,4cyclictest0-21swapper/122:59:091
21612992210,12cyclictest0-21swapper/122:15:021
21611992218,2cyclictest0-21swapper/022:44:340
21611992210,8cyclictest0-21swapper/019:39:180
21611992210,7cyclictest0-21swapper/022:51:540
21611992210,6cyclictest100350irq/108-eth1-tx21:14:520
21611992210,5cyclictest0-21swapper/023:19:070
2161299215,7cyclictest0-21swapper/119:44:251
2161299214,13cyclictest0-21swapper/100:34:151
21612992119,1cyclictest15500-21missed_timers21:24:141
21612992111,4cyclictest25483-21/usr/sbin/munin19:19:091
21612992110,6cyclictest0-21swapper/123:36:321
21612992110,5cyclictest0-21swapper/122:24:111
21612992110,2cyclictest0-21swapper/122:05:581
21612992110,1cyclictest0-21swapper/119:24:091
2161299210,19cyclictest0-21swapper/123:48:161
2161199214,11cyclictest0-21swapper/020:39:160
21611992120,1cyclictest11562-21apache223:58:280
21611992120,1cyclictest0-21swapper/022:55:390
21611992112,6cyclictest0-21swapper/021:19:100
21611992110,6cyclictest0-21swapper/022:01:240
2161299204,9cyclictest0-21swapper/100:04:141
2161299203,10cyclictest0-21swapper/119:39:131
2161299202,8cyclictest0-21swapper/121:18:261
21612992013,5cyclictest0-21swapper/122:19:081
2161299201,11cyclictest100250irq/107-eth1-rx22:12:591
21612992010,7cyclictest0-21swapper/123:16:421
21612992010,3cyclictest0-21swapper/120:29:101
21612992010,3cyclictest0-21swapper/120:19:141
2161299200,1cyclictest0-21swapper/123:19:301
2161199209,2cyclictest21004-21apache_accesses23:39:090
2161199207,8cyclictest315342sleep023:52:440
2161199202,2cyclictest0-21swapper/019:59:130
21611992015,4cyclictest11532-21apache220:11:470
21611992011,3cyclictest0-21swapper/023:09:100
21611992010,5cyclictest0-21swapper/020:50:440
21611992010,3cyclictest0-21swapper/020:44:150
21611992010,2cyclictest0-21swapper/021:45:200
21611992010,0cyclictest0-21swapper/022:12:090
3122421910,0sleep00-21swapper/019:34:100
2161299199,2cyclictest21609-21cyclictest20:44:091
2161299194,9cyclictest0-21swapper/120:59:151
2161299194,10cyclictest0-21swapper/119:59:111
2161299193,5cyclictest0-21swapper/121:11:401
2161299191,9cyclictest0-21swapper/100:29:341
21612991918,0cyclictest0-21swapper/121:30:371
21612991913,3cyclictest1199-21runrttasks19:32:251
2161299191,10cyclictest0-21swapper/121:49:111
21612991910,5cyclictest0-21swapper/100:26:421
21612991910,5cyclictest0-21swapper/100:23:381
21612991910,4cyclictest0-21swapper/121:34:031
21612991910,3cyclictest0-21swapper/119:54:101
21612991910,1cyclictest0-21swapper/123:39:171
2161199199,6cyclictest2791-21diskmemload21:10:370
2161199195,6cyclictest0-21swapper/022:34:140
2161199194,14cyclictest6438-21kworker/u4:000:12:510
2161199191,8cyclictest0-21swapper/021:24:110
21611991918,1cyclictest0-21swapper/000:14:370
21611991917,1cyclictest0-21swapper/022:31:460
2161199191,3cyclictest0-21swapper/020:34:100
21611991910,9cyclictest0-21swapper/000:33:550
21611991910,7cyclictest0-21swapper/021:40:190
21611991910,5cyclictest0-21swapper/020:17:070
21611991910,4cyclictest0-21swapper/019:31:090
2161299186,7cyclictest0-21swapper/123:49:091
2161299184,10cyclictest0-21swapper/119:34:091
21612991816,1cyclictest12853-21ssh00:11:091
21612991810,3cyclictest0-21swapper/121:54:111
21612991810,3cyclictest0-21swapper/120:09:181
2161199187,6cyclictest0-21swapper/020:04:100
2161199184,6cyclictest0-21swapper/019:49:110
21611991817,1cyclictest11562-21apache219:15:580
21611991811,4cyclictest0-21swapper/023:59:320
21611991811,2cyclictest0-21swapper/020:28:300
21611991811,1cyclictest0-21swapper/019:19:080
21611991810,3cyclictest0-21swapper/020:59:100
21611991810,3cyclictest0-21swapper/019:54:100
2161199180,13cyclictest0-21swapper/022:59:090
2303021710,0sleep10-21swapper/119:10:251
2161299178,6cyclictest636-21nscd00:15:501
2161299172,8cyclictest0-21swapper/122:29:091
21612991712,4cyclictest11562-21apache219:49:151
21612991710,4cyclictest0-21swapper/122:39:131
21612991710,1cyclictest0-21swapper/120:06:361
2161299170,8cyclictest0-21swapper/121:04:101
2161299170,13cyclictest0-21swapper/120:14:211
2161199173,7cyclictest0-21swapper/020:29:150
21611991716,1cyclictest11532-21apache221:04:140
2161199171,10cyclictest18774-21apache_volume21:29:090
21611991710,4cyclictest0-21swapper/021:34:100
2161299163,8cyclictest0-21swapper/119:14:161
2161299163,10cyclictest0-21swapper/120:39:101
2161199164,10cyclictest0-21swapper/020:54:120
21611991610,4cyclictest0-21swapper/020:23:110
21612991510,0cyclictest0-21swapper/120:34:101
21611991510,1cyclictest22111-21/usr/sbin/munin19:09:120
21611991411,1cyclictest28544-21timerwakeupswit19:24:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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