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2025-12-03 - 13:12
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Wed Dec 03, 2025 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1531722460,7sleep341-21ksoftirqd/319:05:273
160432236169,22sleep20-21swapper/219:09:482
159222202169,22sleep10-21swapper/119:08:151
159212200167,23sleep00-21swapper/019:08:130
191432660,7sleep01635099cyclictest22:35:300
16350996310,12cyclictest24777-21grep22:50:130
289082610,6sleep128904-21ps00:05:201
16350996110,17cyclictest23914-21sort19:25:150
16350996110,11cyclictest4788-21wc19:50:280
136991610,1ptp4l28081-21irqstats20:40:183
1635099609,18cyclictest4305-21chrt21:00:050
1635099588,11cyclictest3218-21/usr/sbin/munin00:20:150
1635099586,15cyclictest0-21swapper/021:05:170
97722570,3sleep30-21swapper/320:00:283
1635099578,11cyclictest21145-21date21:35:010
1635099576,15cyclictest0-21swapper/020:50:230
16350995711,19cyclictest22233-21/usr/sbin/munin21:35:220
1635099568,17cyclictest478-21dbus-daemon23:45:240
1635099568,11cyclictest6684-21grep23:20:120
1635099568,10cyclictest29163-21cat19:35:200
1635099552,11cyclictest26740-21irqrtprio00:00:190
74282540,1sleep17424-21grep19:55:281
136991540,1ptp4l401ktimersoftd/320:10:273
1635099539,10cyclictest16824-21entropy21:25:170
1635099528,10cyclictest5700-21grep19:55:140
1635099515,17cyclictest0-21swapper/000:11:060
16350995110,18cyclictest22332-21cpuspeed_turbos22:45:130
1635099508,8cyclictest9805-21lsb_release22:16:530
132691500,1getstats0-21swapper/323:30:403
132691500,1getstats0-21swapper/319:10:173
1635099499,7cyclictest28244-21apt-get00:05:130
1635099499,12cyclictest15286-21which23:35:260
1635099488,7cyclictest1087-21diskstats22:00:150
1635099487,8cyclictest4687-21hddtemp_smartct23:15:160
1635099487,7cyclictest32161-21df_inode23:05:150
1635099487,7cyclictest24721-21ls21:40:240
1635099486,7cyclictest29413-21apt-get23:00:140
16353994741,3cyclictest29153-21latency_hist23:00:003
1635099478,7cyclictest1261-21hddtemp_smartct00:15:160
1635099469,8cyclictest20358-21df_inode20:25:170
1635099469,8cyclictest10098-21memory21:10:210
1635099468,8cyclictest27447-21df20:40:140
1635099468,7cyclictest11487-21meminfo20:05:200
1635099468,6cyclictest2257-21gnome-shell20:14:580
1635099467,8cyclictest30042-21hddtemp_smartct20:45:190
1635099467,8cyclictest12402-21sshd22:24:190
1635099459,8cyclictest13213-21hddtemp_smartct22:25:160
1635099457,8cyclictest17954-21ls19:10:260
1635099457,7cyclictest3226-21python23:10:260
1635099447,8cyclictest12042-21hddtemp_smartct23:30:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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