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2026-08-16 - 10:53
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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 Sun Aug 16, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7569992927,1cyclictest0-21swapper/122:23:001
7569992725,2cyclictest0-21swapper/120:26:191
7569992625,0cyclictest0-21swapper/121:18:551
756999250,1cyclictest0-21swapper/100:00:181
7564992513,6cyclictest0-21swapper/022:05:010
7569992415,9cyclictest0-21swapper/121:29:141
757399230,18cyclictest0-21swapper/222:35:192
7573992221,0cyclictest0-21swapper/220:26:192
757399220,4cyclictest0-21swapper/223:44:042
757399220,21cyclictest0-21swapper/222:23:012
756999220,18cyclictest0-21swapper/122:31:221
756499220,21cyclictest870-21systemd-logind20:58:510
7573992121,0cyclictest0-21swapper/221:18:552
756499212,11cyclictest10117-21latency_hist21:10:010
7573992016,1cyclictest0-21swapper/219:35:192
757399193,15cyclictest0-21swapper/223:01:032
7573991917,1cyclictest0-21swapper/221:05:532
7573991917,1cyclictest0-21swapper/220:58:012
7573991916,2cyclictest17025-21chrt21:20:142
7573991914,4cyclictest9080-21nfsd419:10:192
7573991914,3cyclictest3991-21H222:10:212
757399190,4cyclictest426-21systemd-udevd21:36:522
757399190,4cyclictest0-21swapper/219:29:502
757399190,16cyclictest3976-21H222:10:212
756999192,3cyclictest0-21swapper/100:25:131
7569991917,1cyclictest21-21ksoftirqd/123:26:161
7569991917,1cyclictest21-21ksoftirqd/122:08:071
7569991916,2cyclictest3991-21H222:10:211
756999190,2cyclictest3991-21H222:10:211
756999190,18cyclictest0-21swapper/100:30:011
756999190,16cyclictest29421-21nfsd423:35:191
756999190,16cyclictest29421-21nfsd423:35:181
756999190,16cyclictest0-21swapper/120:30:151
756499193,15cyclictest18318-21cut00:15:000
756499192,3cyclictest0-21swapper/019:55:000
7564991914,4cyclictest426-21systemd-udevd23:20:520
7564991914,4cyclictest399-20systemd-journal22:17:010
756499191,17cyclictest3985-21H222:10:210
756499190,2cyclictest3979-21H222:10:210
756499190,17cyclictest426-21systemd-udevd21:32:510
756499190,16cyclictest4035-21H222:10:210
756499190,16cyclictest3983-21H222:10:210
7573991816,1cyclictest28-21ksoftirqd/223:10:442
7573991816,1cyclictest28-21ksoftirqd/223:10:442
7573991815,2cyclictest7559-21cyclictest19:45:002
7573991814,3cyclictest3976-21H222:10:212
7573991813,4cyclictest0-21swapper/221:50:392
757399181,2cyclictest3983-21H222:10:212
757399181,16cyclictest993-21dbus-daemon22:00:242
757399180,3cyclictest9408-21lxd20:50:522
757399180,3cyclictest426-21systemd-udevd22:26:522
757399180,3cyclictest3989-21H222:10:212
757399180,3cyclictest3989-21H222:10:212
757399180,3cyclictest28023-21grep21:40:112
757399180,2cyclictest3979-21H222:10:212
757399180,2cyclictest3976-21H222:10:212
757399180,17cyclictest3976-21H222:10:212
757399180,17cyclictest2679-21nfsd423:45:172
757399180,16cyclictest7613-21taskset22:55:252
757399180,16cyclictest3983-21H222:10:212
757399180,16cyclictest20113-21nfsd419:30:202
757399180,15cyclictest3983-21H222:10:212
7569991816,1cyclictest21-21ksoftirqd/121:10:011
7569991815,2cyclictest3987-21H222:10:211
7569991815,2cyclictest3206-21JS22:10:211
7569991814,3cyclictest3991-21H222:10:211
7569991814,3cyclictest3985-21H222:10:211
7569991814,3cyclictest3983-21H222:10:211
756999180,2cyclictest4035-21H222:10:211
756999180,2cyclictest4035-21H222:10:211
756999180,1cyclictest0-21swapper/123:01:281
756999180,17cyclictest6030-21munin-run20:05:001
756999180,17cyclictest3991-21H222:10:211
756999180,17cyclictest3976-21H222:10:211
756999180,17cyclictest29996-21cpuspeed_turbos19:50:141
756499182,15cyclictest10175-21idleruntime20:10:160
7564991816,1cyclictest3985-21H222:10:210
7564991816,1cyclictest3983-21H222:10:210
7564991816,1cyclictest0-21swapper/019:59:120
7564991814,3cyclictest3976-21H222:10:210
7564991814,3cyclictest0-21swapper/020:39:010
7564991814,2cyclictest3989-21H222:10:210
756499180,2cyclictest3987-21H222:10:210
756499180,2cyclictest3987-21H222:10:210
756499180,2cyclictest3987-21H222:10:210
756499180,16cyclictest16662-21df19:25:140
757399173,0cyclictest0-21swapper/220:23:212
7573991715,1cyclictest28-21ksoftirqd/222:15:162
7573991715,1cyclictest22628-21/usr/sbin/munin23:25:212
7573991715,1cyclictest0-21swapper/220:30:142
7573991714,2cyclictest6102-21grep21:55:212
7573991714,2cyclictest5713-21munin-run20:05:002
7573991714,2cyclictest4933-21/usr/sbin/munin21:00:142
7573991714,2cyclictest31249-21ntp_kernel_err19:50:192
7573991714,2cyclictest18733-21dpkg00:15:022
757399171,15cyclictest28-21ksoftirqd/219:45:142
757399170,2cyclictest6444-21apt-key20:05:012
757399170,2cyclictest29969-21nfsd420:45:192
757399170,2cyclictest27402-21awk20:40:192
757399170,2cyclictest19664-21expr21:25:142
757399170,2cyclictest11677-21cat00:00:222
757399170,1cyclictest3979-21H222:10:212
757399170,16cyclictest9407-21apache_processe20:10:112
757399170,16cyclictest686-21expr19:55:142
757399170,16cyclictest5011-21expr23:50:142
757399170,16cyclictest4099-21H222:10:212
757399170,16cyclictest30642-21apache_accesses21:45:122
757399170,16cyclictest23891-21cat20:35:182
757399170,16cyclictest23281-21ntp_states21:30:192
757399170,16cyclictest17503-21expr23:15:142
757399170,16cyclictest13563-21cpuspeed_turbos19:20:142
757399170,16cyclictest13563-21cpuspeed_turbos19:20:132
757399170,16cyclictest12874-21/usr/sbin/munin22:10:162
7569991715,1cyclictest3075-21timerwakeupswit21:50:221
7569991715,1cyclictest0-21swapper/121:46:131
7569991714,2cyclictest595-21expr19:55:151
7569991714,2cyclictest4165-21taskset20:56:011
7569991714,2cyclictest3989-21H222:10:211
7569991714,2cyclictest3979-21H222:10:211
7569991714,2cyclictest3979-21H222:10:211
7569991714,2cyclictest3976-21H222:10:211
7569991714,2cyclictest32670-21grep20:50:161
7569991714,2cyclictest28677-21/usr/sbin/munin20:45:211
7569991714,2cyclictest16667-21cpuspeed_turbos21:20:141
7569991713,3cyclictest25351-21sessionclean20:39:001
756999171,1cyclictest0-21swapper/120:40:131
756999170,2cyclictest4099-21H222:10:211
756999170,2cyclictest19121-21expr19:30:161
756999170,2cyclictest1823-21expr23:45:131
756999170,2cyclictest11500-21gpg-connect-age23:05:011
756999170,2cyclictest10958-21taskset21:10:121
756999170,2cyclictest1079-21cups-browsed22:15:211
756999170,16cyclictest9407-21apache_processe20:10:121
756999170,16cyclictest6317-21timerandwakeup21:55:221
756999170,16cyclictest4035-21H222:10:211
756999170,16cyclictest3991-21H222:10:211
756999170,16cyclictest3991-21H222:10:211
756999170,16cyclictest3979-21H222:10:211
756999170,16cyclictest30695-21grep22:40:171
756999170,16cyclictest29125-21netstat21:40:171
756999170,16cyclictest26532-21/usr/sbin/munin22:35:141
756999170,16cyclictest23262-21grep21:30:181
756999170,16cyclictest1856-21systemd-udevd19:16:521
756999170,16cyclictest15200-21cron22:15:001
756999170,16cyclictest14057-21users20:15:221
756499178,5cyclictest9-21ksoftirqd/019:10:150
756499172,1cyclictest9-21ksoftirqd/022:11:070
7564991714,2cyclictest5093-21tr21:00:140
7564991714,2cyclictest3991-21H222:10:210
7564991714,2cyclictest30982-21ls21:45:140
7564991714,2cyclictest28026-21cut21:40:120
7564991714,2cyclictest27356-21sed00:30:010
7564991714,2cyclictest25820-21nfsd421:35:200
7564991714,2cyclictest19869-21hddtemp_smartct21:25:150
7564991714,1cyclictest0-21swapper/023:45:130
756499171,15cyclictest26354-21sed19:40:230
756499170,2cyclictest4099-21H222:10:210
756499170,2cyclictest4099-21H222:10:210
756499170,2cyclictest4099-21H222:10:210
756499170,2cyclictest399-20systemd-journal21:20:010
756499170,2cyclictest3985-21H222:10:210
756499170,2cyclictest3327-21tr20:00:150
756499170,2cyclictest2069-21systemd-udevd22:28:510
756499170,2cyclictest18827-21apache_volume00:15:130
756499170,1cyclictest0-21swapper/023:35:190
756499170,1cyclictest0-21swapper/023:35:190
756499170,1cyclictest0-21swapper/023:06:150
756499170,1cyclictest0-21swapper/020:30:150
756499170,16cyclictest7827-21tune2fs23:55:150
756499170,16cyclictest7540-21sed20:05:160
756499170,16cyclictest4362-21dpkg21:55:020
756499170,16cyclictest426-21systemd-udevd21:14:520
756499170,16cyclictest4099-21H222:10:210
756499170,16cyclictest399-20systemd-journal20:19:340
756499170,16cyclictest3991-21H222:10:210
756499170,16cyclictest3991-21H222:10:210
756499170,16cyclictest2610-21apache_processe22:50:130
756499170,16cyclictest25454-21grep00:25:150
756499170,16cyclictest24345-21munin-plugin-st19:40:010
756499170,16cyclictest18414-21cut23:15:190
756499170,16cyclictest1796-21idleruntime21:50:150
756499170,16cyclictest12693-21egrep00:05:160
756499170,15cyclictest4035-21H222:10:210
756499170,15cyclictest3991-21H222:10:210
7573991614,1cyclictest0-21swapper/222:05:112
7573991613,2cyclictest12135-21apache_volume20:15:122
757399160,1cyclictest11655-21sed19:15:192
757399160,15cyclictest19930-21apt-get23:20:132
757399160,15cyclictest0-21swapper/222:45:142
757399160,15cyclictest0-21swapper/222:45:142
7569991615,1cyclictest21-21ksoftirqd/119:20:171
7569991615,1cyclictest21-21ksoftirqd/119:20:171
7569991614,1cyclictest0-21swapper/121:00:141
7569991614,1cyclictest0-21swapper/119:45:131
7569991614,1cyclictest0-21swapper/119:25:151
7569991613,2cyclictest3991-21H222:10:211
756999160,2cyclictest455-21plymouthd23:50:131
756999160,1cyclictest0-21swapper/120:20:111
756999160,15cyclictest455-21plymouthd20:05:011
756999160,15cyclictest0-21swapper/119:40:141
7564991614,1cyclictest3450-21gsd-color20:21:170
7564991614,1cyclictest0-21swapper/021:20:500
7564991614,1cyclictest0-21swapper/020:45:180
7564991614,1cyclictest0-21swapper/019:45:180
7564991613,2cyclictest3992-21H222:10:210
756499160,2cyclictest29516-21grep22:40:130
756499160,15cyclictest10089-21cat22:05:130
756499160,15cyclictest0-21swapper/019:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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