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2026-03-21 - 11:33
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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 rackdslot0.osadl.org (updated Sat Mar 21, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29858992617,0cyclictest0-21swapper/022:15:160
29859992423,0cyclictest0-21swapper/100:25:461
2985899244,19cyclictest0-21swapper/021:15:000
2986099230,20cyclictest0-21swapper/219:43:012
2985899230,22cyclictest0-21swapper/021:47:170
2985899212,16cyclictest0-21swapper/019:51:000
2985899210,17cyclictest0-21swapper/023:37:580
2985899200,2cyclictest5234-21latency_hist20:20:010
2986099192,11cyclictest12808-21sed23:25:002
2985999192,13cyclictest0-21swapper/121:55:151
29859991914,4cyclictest1517-21lxd21:16:491
2985899192,2cyclictest27024-21chrt20:57:030
29858991917,1cyclictest0-21swapper/021:30:300
29858991917,1cyclictest0-21swapper/020:04:540
29858991917,1cyclictest0-21swapper/020:04:530
2985899190,2cyclictest8196-21cat20:25:000
2985899190,2cyclictest25682-21cat22:50:010
2985899190,18cyclictest0-21swapper/022:42:460
2986099182,1cyclictest28-21ksoftirqd/221:00:272
29860991816,1cyclictest0-21swapper/223:33:422
29860991815,2cyclictest19819-21cat22:40:012
29860991814,2cyclictest1816-21cpuspeed_turbos23:05:122
2986099180,3cyclictest15608-21nfsd422:30:162
2986099180,3cyclictest0-21swapper/222:44:022
2986099180,17cyclictest0-21swapper/223:51:522
2985999182,2cyclictest10463-21expr21:25:151
2985999182,15cyclictest16770-21cut22:35:001
2985999182,15cyclictest0-21swapper/122:20:111
29859991814,3cyclictest0-21swapper/100:32:361
2985899183,1cyclictest0-21swapper/000:36:510
2985899182,2cyclictest9278-21cat22:20:130
2985899182,1cyclictest0-21swapper/023:14:580
2985899182,1cyclictest0-21swapper/022:25:140
2985899182,15cyclictest26899-21latency_hist21:55:010
2985899182,15cyclictest22800-21/usr/sbin/munin23:40:160
2985899181,2cyclictest9924-21gzip21:25:020
2985899181,2cyclictest0-21swapper/023:05:190
2985899181,16cyclictest18860-21sed23:35:000
2985899180,3cyclictest456-21gpgv19:15:010
2985899180,3cyclictest455-21plymouthd19:55:210
2985899180,3cyclictest15640-21/usr/sbin/munin00:25:160
2985899180,3cyclictest1351-21lxd21:02:490
2985899180,1cyclictest0-21swapper/019:48:030
2985899180,17cyclictest16974-21tr20:40:140
2985899180,16cyclictest3503-21turbostat.cron19:20:020
29860991715,1cyclictest25822chrt22:09:382
29860991715,1cyclictest0-21swapper/223:15:182
29860991714,2cyclictest7391-21nfsd422:15:172
29860991714,2cyclictest27873-21chrt22:52:142
29860991714,2cyclictest2203-21netstat19:15:172
29860991714,2cyclictest20529-21sendmail_mailst23:35:202
29860991714,2cyclictest18311-21taskset19:45:132
29860991714,2cyclictest0-21swapper/200:10:122
29860991713,3cyclictest4484-21smtpd19:20:162
29860991713,3cyclictest0-21swapper/223:25:102
29860991713,2cyclictest5528-21proc_pri21:15:202
2986099171,2cyclictest0-21swapper/200:15:202
2986099170,2cyclictest3501-21cron21:15:002
2986099170,2cyclictest31897-21processes21:05:192
2986099170,2cyclictest28283-21cat20:00:212
2986099170,2cyclictest28283-21cat20:00:212
2986099170,2cyclictest25173-21kernelversion21:50:182
2986099170,2cyclictest16830-21snapd23:48:022
2986099170,2cyclictest16068-21nfsd400:25:172
2986099170,2cyclictest10448-21mailstats22:20:202
2986099170,16cyclictest8881-21cat19:25:202
2986099170,16cyclictest6283-21ntpq23:10:162
2986099170,16cyclictest4731-21ntpq22:10:182
2986099170,16cyclictest4224-21fschecks_time00:05:142
2986099170,16cyclictest32153-21smtp23:57:222
2986099170,16cyclictest22443-21expr23:40:132
2986099170,16cyclictest2007-21systemd-journal20:27:222
2986099170,16cyclictest2007-21systemd-journal19:57:232
2986099170,16cyclictest1515-21lxd20:44:502
2986099170,16cyclictest1348-21lxd19:14:492
2986099170,16cyclictest0-21swapper/221:45:162
29859991714,2cyclictest9610-21master23:15:571
29859991714,2cyclictest9592-21apt-config21:25:021
29859991714,2cyclictest7935-21ntp_kernel_err00:10:171
29859991714,2cyclictest6652-21sed20:20:171
29859991714,2cyclictest4898-21apache_accesses23:10:081
29859991714,2cyclictest28971-21expr22:55:131
29859991714,2cyclictest24965-21nfsd419:55:181
29859991714,2cyclictest24233-21/usr/sbin/munin21:50:141
29859991714,2cyclictest1856-21systemd-udevd19:28:531
29859991714,2cyclictest11566-21expr20:30:141
29859991714,2cyclictest0-21swapper/100:00:121
29859991714,1cyclictest0-21swapper/123:35:171
2985999171,15cyclictest21-21ksoftirqd/122:05:001
2985999171,15cyclictest0-21swapper/123:25:111
2985999170,2cyclictest6923-21cat22:15:151
2985999170,2cyclictest3351-21lxd21:30:491
2985999170,2cyclictest31512-21nfsd419:10:171
2985999170,2cyclictest2585-21cat23:05:141
2985999170,2cyclictest19006-21proxymap22:35:491
2985999170,2cyclictest16743-21snapd20:27:481
2985999170,2cyclictest16262-21expr21:35:151
2985999170,16cyclictest6833-21basename19:25:011
2985999170,16cyclictest3755-21ls22:10:141
2985999170,16cyclictest3707-21master23:30:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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