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2026-03-18 - 08:31
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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 Wed Mar 18, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1266227562,8sleep10-21swapper/119:05:131
1264626754,8sleep00-21swapper/019:05:020
13242993331,1cyclictest231ktimersoftd/121:09:351
13241993130,1cyclictest0-21swapper/022:48:290
13242992910,17cyclictest0-21swapper/122:01:531
1324199290,0cyclictest0-21swapper/023:19:470
13241992810,9cyclictest0-21swapper/023:41:410
1324199280,15cyclictest0-21swapper/021:44:290
1324299263,22cyclictest0-21swapper/119:24:331
13242992610,9cyclictest0-21swapper/123:44:111
13242992610,10cyclictest0-21swapper/119:13:011
13241992616,9cyclictest0-21swapper/023:52:270
13241992610,9cyclictest0-21swapper/022:02:460
1324199260,2cyclictest0-21swapper/021:09:330
13242992525,0cyclictest0-21swapper/122:13:051
13242992510,9cyclictest0-21swapper/122:32:301
13241992525,0cyclictest0-21swapper/019:50:370
1324299244,13cyclictest0-21swapper/123:35:521
13242992419,2cyclictest21336-21wc20:54:341
13242992418,3cyclictest14886-21sh21:34:551
13242992410,8cyclictest0-21swapper/119:29:331
1324299240,4cyclictest2678-21df_inode00:19:351
13241992424,0cyclictest0-21swapper/019:18:590
13241992419,3cyclictest81ktimersoftd/021:51:520
13241992411,8cyclictest0-21swapper/019:29:230
13241992410,7cyclictest0-21swapper/023:29:360
13241992410,7cyclictest0-21swapper/020:49:340
1324299236,9cyclictest0-21swapper/120:44:391
13242992314,5cyclictest0-21swapper/123:46:241
13242992312,10cyclictest0-21swapper/123:25:061
13242992310,4cyclictest0-21swapper/100:34:381
1324299230,1cyclictest25281-21/usr/sbin/munin00:04:331
13241992321,2cyclictest0-21swapper/022:43:420
1324199231,21cyclictest0-21swapper/022:58:110
13241992310,6cyclictest0-21swapper/000:14:470
13242992221,0cyclictest21501-21seq23:14:341
13242992219,2cyclictest6666-21apache223:55:181
13242992218,2cyclictest13239-21cyclictest19:44:381
13242992213,2cyclictest13239-21cyclictest21:54:321
13242992210,8cyclictest0-21swapper/122:55:171
13242992210,6cyclictest0-21swapper/122:49:361
13242992210,5cyclictest0-21swapper/121:20:221
1324299220,13cyclictest0-21swapper/119:59:361
1324199227,7cyclictest0-21swapper/022:11:070
13241992211,4cyclictest0-21swapper/021:31:410
13241992210,6cyclictest0-21swapper/023:03:130
13241992210,6cyclictest0-21swapper/021:39:410
1324199220,21cyclictest0-21swapper/021:28:010
1659222110,3sleep00-21swapper/021:38:560
1324299217,8cyclictest31768-21grep00:14:351
13242992119,1cyclictest13239-21cyclictest20:25:421
13242992115,3cyclictest6666-21apache220:35:541
13241992120,1cyclictest0-21swapper/023:37:340
13241992119,1cyclictest0-21swapper/000:23:200
13241992115,3cyclictest6696-21apache223:13:280
13241992113,3cyclictest81ktimersoftd/023:45:350
13241992111,3cyclictest0-21swapper/019:09:330
13241992110,8cyclictest0-21swapper/022:04:440
13241992110,5cyclictest0-21swapper/022:50:180
13241992110,5cyclictest0-21swapper/021:16:230
2139222010,0sleep00-21swapper/023:58:590
1324299208,6cyclictest1199-21runrttasks19:39:341
1324299206,8cyclictest18508-21runrttasks23:09:381
1324299204,8cyclictest0-21swapper/122:24:401
1324299204,13cyclictest0-21swapper/121:04:351
1324299203,7cyclictest24416-21apache_accesses21:49:331
1324299201,8cyclictest14197-21apache_accesses23:04:331
13242992018,1cyclictest0-21swapper/122:35:061
13242992015,3cyclictest13239-21cyclictest22:19:321
13242992011,5cyclictest0-21swapper/121:48:281
13242992010,7cyclictest0-21swapper/100:24:401
13242992010,5cyclictest0-21swapper/123:59:341
13242992010,5cyclictest0-21swapper/122:49:121
13242992010,4cyclictest0-21swapper/122:07:371
13242992010,2cyclictest0-21swapper/121:43:431
1324199209,6cyclictest0-21swapper/000:27:540
1324199205,8cyclictest0-21swapper/023:14:400
13241992020,0cyclictest0-21swapper/020:09:450
13241992018,1cyclictest636-21nscd21:57:070
13241992017,2cyclictest81ktimersoftd/023:24:330
13241992010,5cyclictest0-21swapper/023:59:360
13241992010,4cyclictest0-21swapper/000:04:570
13241992010,2cyclictest0-21swapper/020:59:360
13241992010,2cyclictest0-21swapper/000:09:300
381821910,0sleep00-21swapper/021:19:590
1324299196,7cyclictest31284-21munin-run00:14:221
13242991915,3cyclictest13389-21latency_hist20:34:221
13242991910,4cyclictest0-21swapper/119:19:351
13242991910,2cyclictest0-21swapper/100:31:451
13242991910,1cyclictest0-21swapper/119:51:341
1324299190,8cyclictest0-21swapper/122:59:341
1324199199,4cyclictest17208-21grep19:19:330
1324199193,7cyclictest0-21swapper/022:24:350
1324199193,10cyclictest0-21swapper/000:37:220
13241991918,1cyclictest6666-21apache222:30:460
13241991916,2cyclictest6666-21apache220:01:360
13241991911,3cyclictest0-21swapper/023:07:160
13241991910,3cyclictest26820-21diskmemload22:19:320
1324299187,3cyclictest30759-21/usr/sbin/munin19:54:351
1324299185,5cyclictest0-21swapper/120:39:351
1324299184,4cyclictest31789-21idleruntime-cro22:44:221
1324299184,11cyclictest0-21swapper/120:14:341
1324299183,7cyclictest0-21swapper/119:34:411
1324299183,12cyclictest0-21swapper/123:49:421
1324299182,8cyclictest0-21swapper/120:04:351
1324299182,7cyclictest0-21swapper/121:03:461
13241991818,0cyclictest0-21swapper/022:14:400
13241991815,2cyclictest6696-21apache220:57:000
1324199181,15cyclictest2752-21/usr/sbin/munin20:04:390
13241991810,4cyclictest0-21swapper/022:34:370
13241991810,3cyclictest0-21swapper/019:44:320
13241991810,2cyclictest0-21swapper/000:31:370
532721710,0sleep10-21swapper/120:11:081
1324299175,7cyclictest0-21swapper/123:29:351
13242991710,4cyclictest0-21swapper/122:18:281
13242991710,2cyclictest0-21swapper/121:16:141
1324299170,8cyclictest0-21swapper/123:19:421
1324299170,11cyclictest0-21swapper/119:14:431
1324199173,4cyclictest0-21swapper/020:24:360
1324199171,7cyclictest0-21swapper/020:14:340
13241991717,0cyclictest0-21swapper/020:34:210
13241991710,3cyclictest0-21swapper/020:19:240
1324299163,7cyclictest0-21swapper/120:19:391
1324299163,11cyclictest0-21swapper/121:29:341
13242991615,0cyclictest19557-21tune2fs20:49:351
13242991613,2cyclictest6696-21apache221:27:021
13241991611,0cyclictest16213-21ntpdc20:39:370
13241991610,3cyclictest0-21swapper/020:44:410
13241991610,2cyclictest0-21swapper/020:34:350
13241991610,2cyclictest0-21swapper/019:44:040
13241991610,1cyclictest0-21swapper/019:36:180
1324199152,4cyclictest0-21swapper/021:04:390
13241991511,2cyclictest0-21swapper/019:30:320
13241991510,3cyclictest0-21swapper/019:54:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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