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2026-03-21 - 05:36
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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 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
2985999170,16cyclictest3058-21rs:main1
2985999170,16cyclictest30161-21latency_hist21:05:021
2985999170,16cyclictest2872-21systemd-logind19:48:531
2985999170,16cyclictest21758-21pzem_energy00:35:191
2985999170,16cyclictest14145-21expr20:35:141
2985999170,16cyclictest1085-21gdbus20:10:211
29858991716,1cyclictest9-21ksoftirqd/021:55:160
29858991715,1cyclictest0-21swapper/021:43:530
29858991714,2cyclictest5645-21cat22:14:550
29858991714,2cyclictest30627-21nfsd420:05:190
2985899171,15cyclictest12987-21latency00:20:150
2985899171,15cyclictest11584-21expr20:30:130
2985899171,15cyclictest0-21swapper/021:05:320
2985899170,2cyclictest9616-21nfsd420:25:180
2985899170,2cyclictest7085-21cstates21:20:130
2985899170,2cyclictest5700-21expr19:20:170
2985899170,2cyclictest30104-21/usr/sbin/munin22:55:200
2985899170,2cyclictest27403-21/usr/sbin/munin22:50:220
2985899170,2cyclictest2007-21systemd-journal23:27:210
2985899170,2cyclictest17031-21/usr/sbin/munin22:35:110
2985899170,2cyclictest14299-21cpu22:30:130
2985899170,2cyclictest12620-21cron19:35:010
2985899170,2cyclictest11284-21/usr/sbin/munin23:20:170
2985899170,2cyclictest11123-21timerwakeupswit00:15:210
2985899170,16cyclictest8593-21tr19:25:180
2985899170,16cyclictest7178-21/usr/sbin/munin00:10:140
2985899170,16cyclictest6033-21sort00:09:000
2985899170,16cyclictest4569-21expr21:15:130
2985899170,16cyclictest31269-21/usr/sbin/munin23:00:110
2985899170,16cyclictest30647-21/usr/sbin/munin23:55:140
2985899170,16cyclictest24766-21cut23:45:130
2985899170,16cyclictest22231-21dpkg20:50:120
2985899170,16cyclictest19504-21/usr/sbin/munin20:45:100
2985899170,16cyclictest17570-21/usr/sbin/munin00:30:140
2985899170,16cyclictest12568-21cat19:35:020
2985899170,16cyclictest10151-21lxd22:06:490
2985899170,16cyclictest0-21swapper/023:50:130
29860991615,1cyclictest0-21swapper/221:35:142
29860991614,1cyclictest25683-21http_loadtime20:55:162
29860991614,1cyclictest0-21swapper/220:35:202
29860991614,1cyclictest0-21swapper/220:20:112
29860991614,1cyclictest0-21swapper/220:15:152
29860991614,1cyclictest0-21swapper/220:10:172
29860991614,1cyclictest0-21swapper/200:37:092
29860991613,2cyclictest29465-21latency22:55:172
29860991613,2cyclictest21393-21expr19:50:132
29860991613,2cyclictest19522-21http_loadtime21:40:142
29860991613,2cyclictest13088-21dpkg21:30:032
2986099160,1cyclictest1412-21kernelversion00:00:162
2986099160,1cyclictest12906-21cstates19:35:132
2986099160,1cyclictest12674-21sendmail_mailqu20:30:202
2986099160,1cyclictest0-21swapper/219:30:142
2986099160,1cyclictest0-21swapper/200:30:162
2986099160,15cyclictest482-21sed23:00:202
2986099160,15cyclictest3983-21H222:10:212
2986099160,15cyclictest28-21ksoftirqd/222:25:142
2986099160,15cyclictest19483-21/usr/sbin/munin20:45:152
2986099160,15cyclictest0-21swapper/222:45:132
2986099160,15cyclictest0-21swapper/221:55:142
2986099160,15cyclictest0-21swapper/221:25:102
2986099160,15cyclictest0-21swapper/221:20:162
29859991614,1cyclictest270712chrt20:57:361
29859991614,1cyclictest21112-21cpuspeed_turbos19:50:131
29859991614,1cyclictest0-21swapper/121:13:351
29859991614,1cyclictest0-21swapper/120:50:101
29859991614,1cyclictest0-21swapper/120:40:171
29859991614,1cyclictest0-21swapper/120:00:121
29859991614,1cyclictest0-21swapper/120:00:111
29859991613,2cyclictest2007-21systemd-journal21:47:191
2985999160,1cyclictest0-21swapper/123:50:191
2985999160,1cyclictest0-21swapper/121:05:121
2985999160,1cyclictest0-21swapper/120:15:111
2985999160,1cyclictest0-21swapper/100:05:151
2985999160,15cyclictest3987-21H222:10:211
2985999160,15cyclictest26883-21missed_timers22:50:171
2985999160,15cyclictest21861-21/usr/sbin/munin23:40:131
2985999160,15cyclictest20240-21expr22:40:121
2985999160,15cyclictest12663-21apt-get19:35:121
2985999160,15cyclictest0-21swapper/123:45:131
2985999160,15cyclictest0-21swapper/123:20:181
2985999160,15cyclictest0-21swapper/123:00:131
2985999160,15cyclictest0-21swapper/122:05:151
2985999160,15cyclictest0-21swapper/121:40:111
2985999160,15cyclictest0-21swapper/120:45:121
2985999160,15cyclictest0-21swapper/120:05:161
2985999160,15cyclictest0-21swapper/119:40:151
2985999160,15cyclictest0-21swapper/119:30:131
2985999160,15cyclictest0-21swapper/100:20:161
2985999160,15cyclictest0-21swapper/100:15:131
29858991614,1cyclictest425-21cpu00:00:120
29858991614,1cyclictest0-21swapper/020:35:150
2985899160,2cyclictest32170-21apt-get20:10:120
2985899160,1cyclictest0-21swapper/019:40:150
2985899160,15cyclictest8180-21cstates23:15:130
2985899160,15cyclictest0-21swapper/021:35:180
29860991513,1cyclictest4035-21H222:10:212
2986099150,1cyclictest0-21swapper/222:00:112
29859991513,1cyclictest0-21swapper/123:55:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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