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2026-08-24 - 19:57
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Mon Aug 24, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
683227057,9sleep10-21swapper/107:03:451
684326654,8sleep00-21swapper/007:03:520
290862480,1sleep10-21swapper/110:50:541
7427992922,6cyclictest17263-21apache207:33:221
742599290,24cyclictest0-21swapper/012:16:140
7427992827,1cyclictest0-21swapper/112:37:451
7427992826,1cyclictest31589-21irqstats10:08:191
742799280,25cyclictest0-21swapper/112:13:041
7425992828,0cyclictest0-21swapper/011:07:530
7425992710,0cyclictest0-21swapper/009:47:190
7427992610,7cyclictest0-21swapper/109:49:351
7427992610,10cyclictest0-21swapper/110:33:361
742599260,25cyclictest0-21swapper/010:26:140
7427992522,2cyclictest24268-21ssh11:30:151
7425992510,4cyclictest0-21swapper/007:43:160
742799248,11cyclictest0-21swapper/111:19:541
742799240,6cyclictest7357-21apache_accesses11:53:161
742599244,15cyclictest0-21swapper/008:33:200
7425992419,3cyclictest100450irq/109-eth1-tx09:30:290
7425992411,9cyclictest0-21swapper/011:18:220
7425992410,2cyclictest0-21swapper/010:58:240
7425992410,10cyclictest0-21swapper/010:29:040
7427992319,3cyclictest17230-21apache212:29:391
7427992310,6cyclictest0-21swapper/111:03:231
7427992310,0cyclictest0-21swapper/110:53:121
742599232,20cyclictest0-21swapper/012:12:450
7425992310,2cyclictest0-21swapper/012:03:540
7427992222,0cyclictest0-21swapper/111:58:101
7427992220,1cyclictest2204-21ssh09:25:551
7427992214,4cyclictest0-21swapper/109:08:211
7425992220,2cyclictest81ktimersoftd/009:38:560
7425992211,4cyclictest0-21swapper/011:08:400
7425992210,8cyclictest0-21swapper/010:50:170
742799214,12cyclictest0-21swapper/109:43:091
742799212,16cyclictest0-21swapper/111:25:151
7427992113,6cyclictest0-21swapper/112:21:001
7427992111,8cyclictest100150irq/106-eth1-rx11:40:251
7427992110,5cyclictest0-21swapper/109:13:171
7427992110,3cyclictest0-21swapper/111:48:211
742799210,20cyclictest0-21swapper/108:22:251
742599214,8cyclictest0-21swapper/008:43:160
7425992121,0cyclictest0-21swapper/008:16:410
742599212,0cyclictest21340-21diskmemload10:55:090
7425992117,3cyclictest5244-21ssh12:35:510
7425992114,3cyclictest0-21swapper/012:28:160
2738322110,0sleep00-21swapper/012:21:300
7427992014,4cyclictest6087-21/usr/sbin/munin08:28:241
7427992010,9cyclictest0-21swapper/109:34:031
7427992010,7cyclictest0-21swapper/107:18:181
7427992010,4cyclictest0-21swapper/111:14:131
7427992010,4cyclictest0-21swapper/107:28:221
742599206,7cyclictest0-21swapper/009:13:220
742599204,8cyclictest16689-21/usr/sbin/munin10:33:190
742599202,9cyclictest19428-21munin-run09:03:040
742599202,12cyclictest0-21swapper/007:48:130
742599202,11cyclictest0-21swapper/007:53:210
7425992019,0cyclictest0-21swapper/010:20:180
7425992017,3cyclictest0-21swapper/011:32:330
7425992016,1cyclictest0-21swapper/010:05:000
7425992013,4cyclictest0-21swapper/008:03:170
7425992010,8cyclictest0-21swapper/010:10:480
7425992010,6cyclictest0-21swapper/011:47:150
7425992010,5cyclictest0-21swapper/010:46:050
7425992010,3cyclictest0-21swapper/008:28:240
742599200,2cyclictest0-21swapper/009:26:000
742599200,13cyclictest0-21swapper/011:23:170
2087422010,0sleep10-21swapper/109:03:261
742799195,8cyclictest0-21swapper/109:53:161
742799194,11cyclictest0-21swapper/110:23:241
742799192,10cyclictest0-21swapper/108:43:201
7427991919,0cyclictest0-21swapper/108:56:241
7427991918,0cyclictest0-21swapper/112:04:281
7427991917,1cyclictest12059-21ssh09:39:071
7427991911,4cyclictest802-21apache210:00:011
7427991910,6cyclictest0-21swapper/110:43:111
742799190,1cyclictest30313-21rm09:18:271
742599198,6cyclictest0-21swapper/007:28:160
742599197,7cyclictest0-21swapper/010:14:440
742599194,9cyclictest0-21swapper/008:18:200
742599194,2cyclictest0-21swapper/009:18:380
742599194,11cyclictest0-21swapper/009:03:190
742599193,12cyclictest9371-21ssh11:55:020
7425991912,6cyclictest17263-21apache209:49:530
7425991910,4cyclictest0-21swapper/011:38:160
7425991910,3cyclictest0-21swapper/011:13:160
742799189,5cyclictest7423-21cyclictest08:38:211
742799184,12cyclictest0-21swapper/108:13:241
7427991817,1cyclictest7423-21cyclictest10:06:291
742799181,2cyclictest0-21swapper/111:09:321
7427991812,4cyclictest17230-21apache207:46:531
7427991812,3cyclictest23410-21fschecks_time07:48:151
742799181,10cyclictest0-21swapper/112:23:161
742599185,6cyclictest3975-21diskstats11:48:170
742599184,13cyclictest0-21swapper/007:33:160
7425991811,4cyclictest1199-21runrttasks08:38:360
7425991810,4cyclictest0-21swapper/010:38:210
7425991810,3cyclictest0-21swapper/009:53:220
7425991810,3cyclictest0-21swapper/008:08:170
7425991810,2cyclictest0-21swapper/012:23:150
742599180,9cyclictest8240-21grep09:33:230
742599180,3cyclictest0-21swapper/009:08:230
3078321810,0sleep10-21swapper/108:08:101
297821810,0sleep10-21swapper/110:59:321
225652180,0sleep10-21swapper/110:42:001
742799174,9cyclictest0-21swapper/107:38:221
742799174,5cyclictest0-21swapper/111:43:161
742799173,7cyclictest0-21swapper/111:33:191
7427991712,4cyclictest17230-21apache212:17:541
7427991710,7cyclictest0-21swapper/107:58:191
7427991710,4cyclictest0-21swapper/110:15:301
7427991710,4cyclictest0-21swapper/107:53:311
7427991710,3cyclictest0-21swapper/110:29:151
7427991710,3cyclictest0-21swapper/109:30:471
7427991710,2cyclictest0-21swapper/108:23:161
7427991710,1cyclictest0-21swapper/107:17:101
742599173,7cyclictest0-21swapper/011:58:200
7425991713,3cyclictest17263-21apache211:34:400
7425991710,4cyclictest0-21swapper/009:58:200
7425991710,3cyclictest0-21swapper/007:13:200
742799165,8cyclictest0-21swapper/107:08:221
742799163,8cyclictest0-21swapper/108:03:221
7427991610,0cyclictest0-21swapper/107:25:091
742599163,11cyclictest0-21swapper/008:53:160
742599162,9cyclictest0-21swapper/008:48:190
742599162,5cyclictest0-21swapper/008:23:160
742799152,10cyclictest24479-21snmpd09:00:131
7427991510,3cyclictest17230-21apache208:33:181
7427991510,3cyclictest0-21swapper/110:18:151
742599156,4cyclictest0-21swapper/007:08:240
742599155,7cyclictest0-21swapper/007:58:170
742599154,7cyclictest0-21swapper/007:18:480
7425991510,3cyclictest0-21swapper/007:39:000
7427991412,1cyclictest0-21swapper/108:48:211
742599140,9cyclictest0-21swapper/007:23:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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