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2026-07-28 - 15:12
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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 highest latencies:
System rackdslot0.osadl.org (updated Tue Jul 28, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22024993230,2cyclictest0-21swapper/122:15:201
2202999230,18cyclictest0-21swapper/221:35:172
2202499230,5cyclictest0-21swapper/121:07:101
2202499230,18cyclictest27744-21python323:10:001
2202399220,4cyclictest0-21swapper/022:46:000
22029992116,4cyclictest13895-21munin-run20:50:012
2202999200,19cyclictest870-21systemd-logind22:36:512
2202999200,17cyclictest0-21swapper/219:29:572
2202499200,15cyclictest0-21swapper/123:38:311
22023992017,2cyclictest9-21ksoftirqd/021:10:010
2202999193,15cyclictest0-21swapper/223:02:202
22029991919,0cyclictest0-21swapper/223:25:202
22029991916,2cyclictest12136-21grep22:40:152
22029991916,2cyclictest0-21swapper/221:08:152
22029991914,4cyclictest426-21systemd-udevd22:04:522
2202499193,15cyclictest0-21swapper/121:35:451
22024991915,3cyclictest3988-21H222:10:211
2202499190,18cyclictest843-21systemd-network20:41:561
2202399193,15cyclictest0-21swapper/022:12:200
2202399192,15cyclictest0-21swapper/020:29:130
2202399190,3cyclictest0-21swapper/019:45:150
2202399190,3cyclictest0-21swapper/019:45:150
2202999182,15cyclictest17358-21sendmail_mailqu23:45:222
22029991817,1cyclictest28-21ksoftirqd/219:51:122
22029991816,1cyclictest4758-21missed_timers00:20:172
22029991816,1cyclictest0-21swapper/222:55:152
22029991815,2cyclictest17973-21cat22:50:162
2202999180,3cyclictest399-20systemd-journal00:10:002
2202999180,3cyclictest399-20systemd-journal00:10:002
2202999180,17cyclictest843-21systemd-network21:46:542
2202999180,17cyclictest14285-21/usr/sbin/munin20:50:192
2202499182,1cyclictest7599-21nfsd400:25:181
2202499182,15cyclictest14326-21nfsd421:45:161
2202499182,15cyclictest10212chrt23:18:261
22024991815,2cyclictest29052-21chrt22:12:251
22024991815,2cyclictest28965-21chrt20:15:321
2202399181,16cyclictest14499-21snapd20:15:340
22029991715,1cyclictest0-21swapper/220:00:032
22029991714,2cyclictest3053-21systemd-logind19:20:522
22029991714,2cyclictest25853-21fschecks_time23:05:152
22029991714,2cyclictest22772-21ntp_kernel_pll_20:05:182
22029991714,2cyclictest17390-21pzem_power21:50:212
22029991714,2cyclictest1-21systemd00:30:512
22029991714,2cyclictest10125-21awk20:40:182
22029991714,1cyclictest0-21swapper/221:00:182
2202999171,15cyclictest27720-21smartctl20:15:172
2202999171,15cyclictest0-21swapper/222:13:512
2202999170,2cyclictest723-21which22:20:142
2202999170,2cyclictest3770-21fschecks_count20:30:162
2202999170,2cyclictest25104-21latency22:05:182
2202999170,2cyclictest18574-21/usr/sbin/munin21:55:172
2202999170,2cyclictest1856-21systemd-udevd23:52:512
2202999170,2cyclictest16676-21/usr/sbin/munin22:50:002
2202999170,2cyclictest1348-21lxd20:12:502
2202999170,17cyclictest0-21swapper/219:35:212
2202999170,16cyclictest7479-21pzem_energy20:35:212
2202999170,16cyclictest32653-21cpuspeed_turbos20:25:152
2202999170,16cyclictest32176-21munin-run20:25:012
2202999170,16cyclictest31497-21grep00:10:182
2202999170,16cyclictest30741-21taskset21:18:362
2202999170,16cyclictest3053-21systemd-logind21:32:522
2202999170,16cyclictest3053-21systemd-logind21:32:522
2202999170,16cyclictest26568-21idleruntime21:10:162
2202999170,16cyclictest2523-21sendmail_mailst19:30:212
2202999170,16cyclictest2161-21run-parts00:15:192
2202999170,16cyclictest12352-21ls00:35:142
2202999170,16cyclictest0-21swapper/223:40:472
2202999170,16cyclictest0-21swapper/223:21:182
22024991715,1cyclictest4875-21nfsd400:20:181
22024991715,1cyclictest12073-21cpuspeed_turbos00:35:131
22024991714,2cyclictest9390-21expr00:30:141
22024991714,2cyclictest7165-21nfsd420:35:201
22024991714,2cyclictest6893-21/usr/sbin/munin19:40:181
22024991714,2cyclictest3975-21anvil23:21:281
22024991714,2cyclictest3970-21dpkg19:35:131
22024991714,2cyclictest3841-21latency_hist19:35:021
22024991714,2cyclictest31042-21ls19:25:141
22024991714,2cyclictest24991-21sed00:00:171
22024991714,2cyclictest21108-21grep21:00:191
22024991714,2cyclictest20951-21idleruntime-cro22:00:011
22024991714,1cyclictest0-21swapper/120:15:001
2202499171,15cyclictest20524-21cat22:55:171
2202499170,2cyclictest4350-21missed_timers20:30:171
2202499170,2cyclictest26972-21https00:05:011
2202499170,2cyclictest26972-21https00:05:011
2202499170,2cyclictest25673-21smtpd19:15:371
2202499170,2cyclictest19543-21cat23:50:161
2202499170,2cyclictest19426-21latency_hist21:00:001
2202499170,2cyclictest15892-21snapd19:55:281
2202499170,2cyclictest15892-21snapd19:45:281
2202499170,2cyclictest15892-21snapd19:45:281
2202499170,2cyclictest15151-21chrt23:41:561
2202499170,2cyclictest14495-21snapd20:50:281
2202499170,2cyclictest13441-21fschecks_time19:50:151
2202499170,2cyclictest11718-21grep22:40:151
2202499170,16cyclictest5727-21latency_hist22:30:011
2202499170,16cyclictest30946-21iwlist00:10:161
2202499170,16cyclictest29192-21tune2fs23:10:161
2202499170,16cyclictest25766-21apt-config21:10:011
2202499170,16cyclictest25115-21latency_hist23:05:011
2202499170,16cyclictest22607-21awk22:00:171
2202499170,16cyclictest21592-21expr23:55:151
2202499170,16cyclictest15624-21awk22:45:181
2202499170,15cyclictest0-21swapper/121:50:181
22023991715,1cyclictest10633-21cpuspeed_turbos21:40:120
22023991715,1cyclictest0-21swapper/020:50:150
22023991714,2cyclictest5955-21apache_accesses20:35:120
22023991714,2cyclictest3053-21systemd-logind23:10:510
22023991714,2cyclictest30334-21cpuspeed_turbos00:10:140
22023991714,2cyclictest1079-21cups-browsed21:20:200
2202399171,15cyclictest84932sleep000:27:290
2202399171,15cyclictest2998-21apt-get20:30:130
2202399170,3cyclictest1114-21lldpd22:32:580
2202399170,2cyclictest9497-21proxymap21:36:100
2202399170,2cyclictest399-20systemd-journal00:08:590
2202399170,2cyclictest399-20systemd-journal00:08:590
2202399170,2cyclictest31912-21ntp_kernel_pll_19:25:180
2202399170,2cyclictest3053-21systemd-logind00:18:510
2202399170,2cyclictest18932-21/usr/sbin/munin22:50:210
2202399170,2cyclictest17098-21grep23:45:180
2202399170,2cyclictest1079-21cups-browsed23:40:210
2202399170,16cyclictest5288-21awk19:35:190
2202399170,16cyclictest426-21systemd-udevd21:04:520
2202399170,16cyclictest22448-21memory20:05:180
2202399170,16cyclictest13937-21munin-run22:45:000
2202399170,16cyclictest0-21swapper/022:55:170
2202399170,0cyclictest22446-21strings23:55:200
22029991614,1cyclictest26078-21latency19:15:402
22029991614,1cyclictest0-21swapper/223:30:192
22029991614,1cyclictest0-21swapper/221:25:192
22029991614,1cyclictest0-21swapper/220:55:192
22029991614,1cyclictest0-21swapper/219:55:182
22029991614,1cyclictest0-21swapper/219:45:002
22029991614,1cyclictest0-21swapper/219:10:132
22029991614,1cyclictest0-21swapper/200:25:132
22029991614,1cyclictest0-21swapper/200:00:132
22029991613,2cyclictest11987-21sendmail_mailtr21:40:212
2202999160,2cyclictest31891-21fschecks_time23:15:152
2202999160,1cyclictest0-21swapper/222:30:122
2202999160,1cyclictest0-21swapper/221:20:222
2202999160,15cyclictest3737-21fschecks_count22:25:172
2202999160,15cyclictest28374-21dpkg23:10:022
2202999160,15cyclictest10821-21fschecks_time23:35:152
2202999160,15cyclictest0-21swapper/200:00:002
22024991614,1cyclictest11882-21expr20:45:151
22024991614,1cyclictest0-21swapper/123:30:161
22024991614,1cyclictest0-21swapper/123:25:151
22024991614,1cyclictest0-21swapper/122:50:131
22024991614,1cyclictest0-21swapper/122:20:151
22024991614,1cyclictest0-21swapper/121:30:111
22024991614,1cyclictest0-21swapper/121:30:111
22024991614,1cyclictest0-21swapper/121:25:001
22024991614,1cyclictest0-21swapper/120:25:141
22024991614,1cyclictest0-21swapper/120:01:521
22024991614,1cyclictest0-21swapper/100:15:151
22024991613,2cyclictest23683-21phpquery20:09:001
2202499160,1cyclictest0-21swapper/122:30:151
2202499160,1cyclictest0-21swapper/119:10:151
2202499160,15cyclictest30437-21fschecks_time20:20:151
2202499160,15cyclictest29376-21cat21:15:171
2202499160,15cyclictest28168-21expr19:20:131
2202499160,15cyclictest1730-21apt-get21:25:141
2202499160,15cyclictest0-21swapper/123:45:161
2202499160,15cyclictest0-21swapper/122:35:141
2202499160,15cyclictest0-21swapper/121:42:521
22023991614,1cyclictest0-21swapper/023:50:130
22023991614,1cyclictest0-21swapper/023:35:120
22023991614,1cyclictest0-21swapper/023:30:160
22023991614,1cyclictest0-21swapper/022:35:130
22023991614,1cyclictest0-21swapper/022:25:190
22023991614,1cyclictest0-21swapper/022:00:220
22023991614,1cyclictest0-21swapper/021:25:150
22023991614,1cyclictest0-21swapper/021:15:190
22023991614,1cyclictest0-21swapper/021:10:140
22023991614,1cyclictest0-21swapper/020:10:150
22023991614,1cyclictest0-21swapper/020:00:030
22023991614,1cyclictest0-21swapper/019:50:150
22023991614,1cyclictest0-21swapper/019:30:160
22023991614,1cyclictest0-21swapper/019:15:350
22023991614,1cyclictest0-21swapper/019:10:180
22023991614,1cyclictest0-21swapper/000:00:170
22023991613,2cyclictest4061-21expr00:20:140
22023991613,2cyclictest16102-21expr21:50:130
22023991613,2cyclictest1515-21lxd22:20:500
2202399160,2cyclictest3983-21H222:10:210
2202399160,2cyclictest31152-21grep20:20:190
2202399160,2cyclictest13121-21apache_volume21:45:100
2202399160,15cyclictest88322chrt20:40:070
2202399160,15cyclictest455-21plymouthd22:05:150
2202399160,15cyclictest3053-21systemd-logind23:00:510
2202399160,15cyclictest28074-21gpgv23:10:000
2202399160,15cyclictest12496-21fschecks_time00:35:140
2202399160,15cyclictest12341-21idleruntime20:45:170
2202399160,15cyclictest0-21swapper/023:25:150
2202399160,15cyclictest0-21swapper/023:20:220
2202399160,15cyclictest0-21swapper/023:15:180
2202399160,15cyclictest0-21swapper/021:55:140
2202399160,15cyclictest0-21swapper/021:30:180
2202399160,15cyclictest0-21swapper/021:30:170
2202399160,15cyclictest0-21swapper/019:55:160
2202399160,15cyclictest0-21swapper/019:40:130
2202399160,15cyclictest0-21swapper/019:20:130
2202399160,15cyclictest0-21swapper/000:30:140
2202399150,14cyclictest0-21swapper/020:55:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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