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2026-04-02 - 17:54
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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 Thu Apr 02, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132272720,1sleep00-21swapper/010:29:410
318462690,0sleep10-21swapper/112:25:431
1140826856,8sleep00-21swapper/007:05:040
1146726755,8sleep10-21swapper/107:05:411
324872450,2sleep11199099cyclictest10:57:091
11989994110,30cyclictest0-21swapper/007:14:210
11989993628,3cyclictest18224-21diskmemload11:33:480
11989993531,3cyclictest18224-21diskmemload09:50:310
11989993432,1cyclictest23506-21ntp_states10:44:320
11989993432,1cyclictest10651-21apache_accesses08:49:260
11989993431,2cyclictest17174-21/usr/sbin/munin09:04:320
11989993430,3cyclictest23832-21grep09:59:340
11989993428,5cyclictest13115-21irqstats08:54:300
11989993331,1cyclictest8750-21hddtemp_smartct10:24:280
11989993331,1cyclictest15707-21diskstats10:34:280
11989993330,2cyclictest883-21sh12:34:100
11989993330,2cyclictest4750-21apache_processe10:19:260
11989993330,2cyclictest393-21ssh12:28:140
11989993330,2cyclictest27095-21taskset08:04:490
11989993330,2cyclictest18224-21diskmemload12:23:580
11989993330,2cyclictest18224-21diskmemload09:55:120
11989993330,2cyclictest12441-21if_eth011:14:290
11989993330,2cyclictest0-21swapper/012:37:130
11989993330,2cyclictest0-21swapper/009:46:410
11989993329,3cyclictest9709-21users11:54:370
11989993324,8cyclictest29561-21apache_processe09:24:270
11989993314,16cyclictest18224-21diskmemload11:40:120
11990993230,0cyclictest0-21swapper/109:31:001
11989993230,2cyclictest2620-21ssh10:15:120
11989993230,1cyclictest26656-21diskstats11:34:280
11989993230,1cyclictest22423-21munin-plugin-st07:49:160
11989993229,2cyclictest3502-21rm09:32:220
11989993229,2cyclictest32584-21runrttasks10:12:510
11989993229,2cyclictest20148-21gzip11:24:350
11989993229,2cyclictest18665-21ssh11:23:410
11989993229,2cyclictest15475-21diskstats07:24:240
11989993228,3cyclictest7235-21ssh11:52:120
11989993227,4cyclictest22520-21ssh12:14:080
11989993227,3cyclictest14282-21ssh12:01:310
11989993225,6cyclictest22981-21df12:14:250
11990993110,13cyclictest0-21swapper/111:32:351
11989993130,1cyclictest18779-21ssh12:08:370
11989993129,2cyclictest18224-21diskmemload10:39:580
11989993129,2cyclictest0-21swapper/009:22:480
11989993129,1cyclictest26977-21memory10:04:310
11989993129,1cyclictest18094-21apache_processe07:34:220
11989993129,1cyclictest0-21swapper/011:04:290
11989993129,1cyclictest0-21swapper/010:51:080
11989993128,2cyclictest9062-21grep11:09:320
11989993128,2cyclictest123162sleep007:12:210
11989993128,2cyclictest0-21swapper/008:36:400
11989993127,3cyclictest29000-21chrt08:09:440
11989993127,3cyclictest2545-21taskset08:26:290
11989993121,10cyclictest0-21swapper/010:54:330
1199099300,29cyclictest0-21swapper/111:59:561
11989993028,2cyclictest31130-1kworker/u5:009:42:330
11989993027,3cyclictest18224-21diskmemload11:46:220
11989993027,2cyclictest3918-21gzip08:29:340
11989993023,6cyclictest4724-21grep09:34:270
11989993016,9cyclictest0-21swapper/009:09:490
11990992929,0cyclictest0-21swapper/110:30:291
11989992926,2cyclictest7835-21mailstats08:39:340
11989992921,7cyclictest17467-21taskset07:32:170
11989992911,17cyclictest0-21swapper/008:00:490
1198999283,19cyclictest0-21swapper/009:17:410
11989992826,2cyclictest0-21swapper/007:50:120
11989992824,4cyclictest0-21swapper/008:14:590
11989992817,7cyclictest31857-21cut08:19:280
11989992817,10cyclictest2843-21ssh11:00:210
11989992724,2cyclictest24203-21mailstats07:54:300
11989992724,2cyclictest14674-21taskset07:19:560
11989992724,2cyclictest0-21swapper/008:44:260
11990992626,0cyclictest0-21swapper/109:37:501
1199099262,4cyclictest0-21swapper/112:19:331
11990992610,8cyclictest0-21swapper/110:14:321
1199099258,8cyclictest0-21swapper/110:01:081
1199099250,1cyclictest449-21ssh09:29:031
11990992423,1cyclictest0-21swapper/111:27:441
11990992410,9cyclictest0-21swapper/108:03:041
11990992410,5cyclictest0-21swapper/109:48:131
11989992422,2cyclictest0-21swapper/008:59:160
11989992422,2cyclictest0-21swapper/007:40:180
11990992317,3cyclictest0-21swapper/112:15:531
11990992315,4cyclictest0-21swapper/109:50:121
11990992310,9cyclictest0-21swapper/112:09:301
11990992310,8cyclictest0-21swapper/110:51:231
11990992310,5cyclictest0-21swapper/111:52:411
11990992310,3cyclictest1443-21hwlatdetect08:24:291
1199099222,15cyclictest0-21swapper/107:41:371
11990992213,5cyclictest18037-21apache211:03:301
11990992210,7cyclictest0-21swapper/108:57:271
11990992210,6cyclictest0-21swapper/109:20:431
11990992210,6cyclictest0-21swapper/107:54:251
11990992210,4cyclictest0-21swapper/109:04:311
11990992210,0cyclictest0-21swapper/109:57:181
1199099220,3cyclictest15251-21/usr/sbin/munin07:24:301
1199099220,3cyclictest0-21swapper/110:44:111
1199099220,1cyclictest0-21swapper/112:29:311
1199099220,17cyclictest100450irq/109-eth1-tx12:06:411
1199099220,12cyclictest0-21swapper/108:44:271
1199099217,8cyclictest0-21swapper/107:34:161
1199099216,9cyclictest0-21swapper/111:54:361
1199099212,10cyclictest1348-21df_inode11:44:281
11990992116,3cyclictest18037-21apache211:06:091
11990992113,7cyclictest18016-21apache210:25:411
11990992110,7cyclictest0-21swapper/108:04:221
11990992110,6cyclictest0-21swapper/109:42:271
11990992110,5cyclictest0-21swapper/107:14:281
11990992110,4cyclictest0-21swapper/108:14:291
1199099210,1cyclictest22831-21kernelversion09:14:301
11990992010,5cyclictest0-21swapper/110:22:061
11990992010,5cyclictest0-21swapper/108:09:271
11990992010,4cyclictest0-21swapper/112:34:281
11990992010,4cyclictest0-21swapper/109:09:261
11990992010,3cyclictest0-21swapper/110:12:291
1199099200,9cyclictest18020-21apache208:19:261
1199099200,11cyclictest0-21swapper/107:44:251
1199099194,11cyclictest0-21swapper/111:14:331
11990991918,1cyclictest0-21swapper/108:59:211
11990991910,9cyclictest0-21swapper/110:09:021
11990991910,2cyclictest0-21swapper/111:39:271
1199099190,12cyclictest3724-21ntp_kernel_pll_08:29:321
1199099181,7cyclictest0-21swapper/111:22:271
11990991817,1cyclictest18016-21apache210:48:061
11990991813,3cyclictest0-21swapper/108:35:051
11990991810,2cyclictest0-21swapper/111:12:241
11990991810,1cyclictest0-21swapper/108:52:021
1199099180,4cyclictest0-21swapper/110:34:311
1199099173,7cyclictest0-21swapper/111:34:281
1199099171,11cyclictest0-21swapper/107:19:221
1199099154,1cyclictest1199-21runrttasks07:11:071
11990991510,0cyclictest0-21swapper/107:32:391
11990991410,1cyclictest0-21swapper/107:52:221
1199099140,7cyclictest0-21swapper/108:39:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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