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2025-10-18 - 08:37
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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 100 highest latencies:
System rackeslot2.osadl.org (updated Sat Oct 18, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
323565421060,2sleep30-21swapper/323:15:013
288076821020,1sleep10-21swapper/119:16:211
30516382290,2sleep30-21swapper/321:30:003
2868929992718,3cyclictest3381501-21kthreadcore00:36:271
31682622260,2sleep30-21swapper/322:36:213
2868928992613,6cyclictest3123267-21cstates22:11:160
2868930992522,1cyclictest0-21swapper/223:10:012
2868928992518,6cyclictest3358892-21latency_hist00:25:020
2868928992518,6cyclictest3246674-21irqcore23:21:200
2868928992511,7cyclictest0-21swapper/023:46:130
2868929992418,2cyclictest170550irq/121-eno122:15:021
2868929992416,3cyclictest3083811-21kthreadcore21:46:181
286892899240,3cyclictest0-21swapper/023:26:150
2868929992317,2cyclictest170550irq/121-eno121:56:251
2868928992315,7cyclictest3384972-21cut00:40:020
2868928992314,5cyclictest3178597-21kthreadcore22:41:200
2868930992219,1cyclictest0-21swapper/219:15:002
2868930992215,1cyclictest0-21swapper/221:35:002
2868930992213,1cyclictest0-21swapper/222:30:012
2868929992219,2cyclictest1803-21gdbus00:05:001
2868929992216,2cyclictest170550irq/121-eno122:40:461
2868929992214,3cyclictest3353235-21kthreadcore00:21:221
2868929992212,3cyclictest3209238-21systemd-run23:00:011
2868929992211,6cyclictest0-21swapper/123:21:211
2868929992210,6cyclictest0-21swapper/122:21:211
2868928992219,2cyclictest1652-1atopacctd20:25:000
2868928992216,5cyclictest2907740-21sendmail19:40:010
2868928992212,5cyclictest3325252-21idleruntime00:06:170
2868928992211,6cyclictest0-21swapper/022:36:200
286892999219,3cyclictest0-21swapper/123:45:011
286892999215,10cyclictest3036460-21sed21:21:201
2868929992115,2cyclictest170550irq/121-eno119:31:161
2868929992111,3cyclictest3210753-21cpuspeed_turbos23:01:161
2868928992112,4cyclictest3027627-21irqrtprio21:16:210
2868928992111,5cyclictest3271144-21munin-plugin-st23:35:010
2868928992111,5cyclictest0-21swapper/021:30:010
2868928992110,4cyclictest3092297-21kthreadcore21:51:210
286893099207,8cyclictest0-21swapper/221:20:012
2868930992017,1cyclictest0-21swapper/223:50:022
2868930992017,1cyclictest0-21swapper/219:40:012
286892999209,3cyclictest0-21swapper/100:06:201
286892999205,4cyclictest0-21swapper/121:51:131
2868929992016,3cyclictest3237826-21irqcore23:16:191
2868929992016,3cyclictest3013870-21kthreadcore21:06:221
2868929992016,3cyclictest2916984-21kthreadcore19:46:221
2868929992016,3cyclictest1700-21systemd-logind19:55:011
2868929992015,3cyclictest1631-21gmain22:35:021
2868929992015,1cyclictest170550irq/121-eno123:36:271
2868929992015,1cyclictest170550irq/121-eno100:20:021
286892999201,2cyclictest3289446-21apt-get23:46:131
2868929992010,3cyclictest3030184-21kthreadcore21:16:221
2868929992010,3cyclictest0-21swapper/100:30:021
2868928992017,2cyclictest3323397-21latency_hist00:05:000
2868928992017,2cyclictest1635-21dbus-daemon20:00:000
2868928992017,2cyclictest1-21systemd19:15:020
2868928992013,6cyclictest3221391-21kthreadcore23:06:220
2868928992012,7cyclictest3061401-21/usr/sbin/munin21:36:150
2868928992010,5cyclictest1631-21gmain00:00:030
286892899200,5cyclictest0-21swapper/000:26:140
31146202190,0sleep13114622-21expr22:06:131
286892999194,3cyclictest0-21swapper/123:51:181
2868929991916,2cyclictest7602-21cron20:30:001
2868929991916,2cyclictest3049222-21switchtime21:26:311
2868929991915,3cyclictest3110299-21needreboot22:01:281
2868929991915,2cyclictest0-21swapper/123:15:011
2868929991914,4cyclictest2931960-21latency_hist20:00:011
286892899198,4cyclictest0-21swapper/022:10:010
286892899197,5cyclictest0-21swapper/022:56:230
286892899196,5cyclictest0-21swapper/023:45:010
286892899196,4cyclictest3016726-21diskmemload21:56:140
2868928991916,2cyclictest3244644-21apt-key23:20:000
2868928991916,2cyclictest2981586-21head20:41:170
2868928991916,2cyclictest1700-21systemd-logind19:10:010
2868928991910,4cyclictest0-21swapper/021:10:020
286892899190,15cyclictest0-21swapper/021:13:440
2564091191,2phc2sys0-21swapper/323:59:393
2868930991816,1cyclictest0-21swapper/223:55:012
2868930991815,1cyclictest0-21swapper/223:36:392
2868930991815,1cyclictest0-21swapper/222:05:002
2868930991815,1cyclictest0-21swapper/219:46:192
2868930991815,1cyclictest0-21swapper/219:30:012
2868930991814,1cyclictest0-21swapper/223:00:002
2868929991815,2cyclictest3376015-21latency_hist00:35:021
2868929991815,2cyclictest3309832-21tr23:56:241
2868929991815,2cyclictest3257851-21kthreadcore23:26:231
2868929991815,2cyclictest3224327-21mailstats23:06:261
2868929991815,2cyclictest3133026-21irqrtprio22:16:191
2868929991815,2cyclictest2971487-21kthreadcore20:31:221
2868929991815,2cyclictest2971487-21kthreadcore20:31:221
2868929991815,2cyclictest2890366-21gltestperf19:26:181
2868929991814,3cyclictest3166999-21cstates22:36:171
2868929991814,3cyclictest3003705-21needreboot20:56:241
2868929991813,3cyclictest2992379-21sshd20:48:081
2868929991811,2cyclictest170550irq/121-eno123:31:211
286892899189,8cyclictest3372205-21kthreadcore00:31:260
286892899189,2cyclictest0-21swapper/022:35:020
286892899188,6cyclictest2877530-21apt-get19:16:140
286892899188,5cyclictest0-21swapper/023:15:020
286892899188,4cyclictest3214301-21kthreadcore23:01:220
286892899187,2cyclictest0-21swapper/022:25:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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