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2026-08-10 - 08:17
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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 Mon Aug 10, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1048099251,6cyclictest32455-21grep20:45:192
1047999247,16cyclictest28931-21latency23:30:181
10480992213,0cyclictest0-21swapper/222:25:162
1047999220,17cyclictest0-21swapper/121:30:201
10479992115,3cyclictest0-21swapper/122:13:081
1047899210,5cyclictest0-21swapper/023:30:010
1048099202,17cyclictest5915-21expr22:50:132
10480992020,0cyclictest0-21swapper/200:20:002
10480992016,1cyclictest0-21swapper/221:50:112
1048099200,2cyclictest3976-21H222:10:212
10480991917,1cyclictest0-21swapper/220:15:182
10480991917,1cyclictest0-21swapper/219:40:282
10480991916,2cyclictest26881-21/usr/sbin/munin00:25:222
10480991915,3cyclictest0-21swapper/222:36:172
10480991915,3cyclictest0-21swapper/221:25:182
10480991913,3cyclictest0-21swapper/220:25:182
1048099190,18cyclictest0-21swapper/223:39:042
1048099190,16cyclictest3981-21H222:10:212
1047999192,2cyclictest28287-21date20:40:001
1047999192,1cyclictest0-21swapper/120:25:201
10479991917,1cyclictest0-21swapper/121:42:571
1047999190,2cyclictest3979-21H222:10:211
1047999190,18cyclictest870-21systemd-logind00:06:521
1047999190,17cyclictest4035-21H222:10:211
1047999190,16cyclictest3983-21H222:10:211
1047899192,3cyclictest0-21swapper/022:55:150
1047899192,16cyclictest21235-21https00:15:010
10478991917,1cyclictest0-21swapper/021:40:230
1047899190,18cyclictest23093-21grep23:20:150
1047899190,18cyclictest0-21swapper/021:01:400
1047899190,16cyclictest3989-21H222:10:210
1047899190,16cyclictest3987-21H222:10:210
1048099182,1cyclictest244482chrt23:20:342
1048099182,1cyclictest0-21swapper/221:05:132
1048099182,15cyclictest22438-21cat22:20:212
10480991816,1cyclictest29403-21timerwakeupswit21:35:202
10480991816,1cyclictest28-21ksoftirqd/222:49:242
10480991816,1cyclictest0-21swapper/221:18:202
10480991815,2cyclictest17230-21ls19:20:182
10480991814,3cyclictest3979-21H222:10:212
10480991814,3cyclictest0-21swapper/221:59:082
10480991811,3cyclictest0-21swapper/223:45:012
1048099180,2cyclictest3989-21H222:10:212
1048099180,2cyclictest3983-21H222:10:212
1048099180,2cyclictest3983-21H222:10:212
1048099180,17cyclictest9404-21/usr/sbin/munin22:00:172
1048099180,17cyclictest4099-21H222:10:212
1048099180,17cyclictest3976-21H222:10:212
1048099180,17cyclictest1078-21polkitd23:10:202
1047999182,15cyclictest21-21ksoftirqd/123:27:311
1047999182,15cyclictest21-21ksoftirqd/122:00:171
1047999182,15cyclictest21-21ksoftirqd/119:46:101
10479991815,1cyclictest0-21swapper/121:20:161
10479991814,3cyclictest3983-21H222:10:211
10479991814,3cyclictest1521-21lxd19:14:491
1047999181,16cyclictest8797-21munin-plugin-st20:05:001
1047999181,16cyclictest22959-21sendmail_mailqu00:15:221
1047999181,16cyclictest13718-21readlink22:05:221
1047999180,2cyclictest4099-21H222:10:211
1047999180,2cyclictest4035-21H222:10:211
1047999180,2cyclictest3989-21H222:10:211
1047999180,2cyclictest3987-21H222:10:211
1047999180,17cyclictest4099-21H222:10:211
1047999180,17cyclictest3991-21H222:10:211
10478991816,1cyclictest0-21swapper/022:45:160
10478991815,2cyclictest24139-21chrt21:26:350
10478991815,2cyclictest14226-21cron20:15:010
1047899181,2cyclictest26589-21expr22:30:110
1047899181,16cyclictest3046-21chrt21:47:010
1047899181,16cyclictest20839-21ps21:20:200
1047899180,2cyclictest3976-21H222:10:210
1047899180,2cyclictest0-21swapper/021:19:080
1047899180,17cyclictest11808-21cut21:05:170
1047899180,15cyclictest3987-21H222:10:210
10480991715,1cyclictest0-21swapper/219:37:102
10480991714,2cyclictest4947-21ntpq19:55:202
10480991714,2cyclictest26003-21sort00:20:202
10480991714,2cyclictest26003-21sort00:20:192
10480991714,2cyclictest25740-21cstates23:25:132
10480991714,2cyclictest24798-21chrt21:30:052
10480991714,2cyclictest23961-21ls20:30:172
10480991714,2cyclictest17764-21/usr/sbin/munin22:15:142
10480991714,2cyclictest1652-21sed00:35:192
10480991714,2cyclictest15827-21cstates00:05:172
10480991714,2cyclictest10883-21cpuspeed_turbos19:10:142
1048099171,15cyclictest30572-21grep21:40:152
1048099171,15cyclictest12590-21nfsd423:00:162
1048099170,2cyclictest3991-21H222:10:212
1048099170,2cyclictest3985-21H222:10:212
1048099170,2cyclictest32524-21anvil21:45:132
1048099170,2cyclictest26114-21gpgv22:30:022
1048099170,2cyclictest15235-21tr22:10:132
1048099170,1cyclictest0-21swapper/222:06:452
1048099170,16cyclictest7969-21cstates21:00:152
1048099170,16cyclictest4099-21H222:10:212
1048099170,16cyclictest3981-21H222:10:212
1048099170,16cyclictest30337-21ls19:45:142
1048099170,16cyclictest29528-21latency20:40:192
1048099170,16cyclictest26298-21hddtemp_smartct20:35:162
1048099170,16cyclictest2277-21sed19:50:232
1048099170,16cyclictest21985-21cstates19:30:142
1048099170,16cyclictest19720-21/usr/sbin/munin23:15:122
1048099170,16cyclictest19337-21cat20:20:222
1048099170,16cyclictest14737-21nfsd419:15:202
1048099170,16cyclictest14737-21nfsd419:15:202
1048099170,16cyclictest14288-21sed20:15:012
1048099170,16cyclictest10559-21pzem_current20:05:212
1048099170,16cyclictest0-21swapper/223:51:002
1048099170,15cyclictest3981-21H222:10:212
1047999172,1cyclictest21-21ksoftirqd/120:22:531
1047999172,1cyclictest0-21swapper/122:15:121
10479991716,1cyclictest21-21ksoftirqd/123:15:381
10479991715,1cyclictest0-21swapper/123:45:141
10479991714,2cyclictest8151-21hddtemp_smartct21:00:161
10479991714,2cyclictest4476-21uname19:55:191
10479991714,2cyclictest4099-21H222:10:211
10479991714,2cyclictest3985-21H222:10:211
10479991714,2cyclictest3985-21H222:10:211
10479991714,2cyclictest3983-21H222:10:211
10479991714,2cyclictest27549-21apache_volume21:35:111
10479991714,2cyclictest2515-21users00:35:241
10479991714,2cyclictest23787-21awk23:20:181
10479991714,2cyclictest2007-21systemd-journal22:55:241
10479991714,2cyclictest17695-21fschecks_time23:10:141
10479991714,2cyclictest15812-21needreboot20:15:171
10479991713,3cyclictest2957-21rtkit-daemon23:05:571
10479991712,3cyclictest25799-21nfsd419:35:211
1047999171,15cyclictest718-21timerwakeupswit20:45:231
1047999170,2cyclictest3991-21H222:10:211
1047999170,2cyclictest15471-21vmstat19:15:241
1047999170,2cyclictest15471-21vmstat19:15:241
1047999170,2cyclictest11068-21awk23:55:181
1047999170,2cyclictest0-21swapper/121:05:111
1047999170,1cyclictest3983-21H222:10:211
1047999170,1cyclictest0-21swapper/100:31:321
1047999170,16cyclictest9716-21fschecks_time20:05:161
1047999170,16cyclictest5654-21tr22:50:131
1047999170,16cyclictest3989-21H222:10:211
1047999170,16cyclictest29358-21sshd19:41:021
1047999170,16cyclictest26380-21apache_accesses22:30:101
1047999170,16cyclictest22599-21cstates21:25:141
1047999170,16cyclictest2065-21sendmail_mailst19:50:221
1047999170,16cyclictest20413-21nvmesmart_nvme019:25:181
1047999170,16cyclictest18286-21apache_volume00:10:111
1047999170,16cyclictest14495-21snapd19:23:131
1047999170,16cyclictest0-21swapper/122:42:001
1047999170,16cyclictest0-21swapper/120:30:141
10478991715,1cyclictest0-21swapper/020:06:280
10478991714,2cyclictest5037-21hddtemp_smartct23:45:140
10478991714,2cyclictest4305-21expr21:50:140
10478991714,2cyclictest4276-21latency_hist23:45:010
10478991714,2cyclictest28948-21ntpq21:35:170
10478991714,2cyclictest23843-21df_inode22:25:150
10478991714,2cyclictest20127-21/usr/sbin/munin20:25:180
10478991714,2cyclictest11382-21apache_processe23:00:110
10478991714,2cyclictest1038-21fschecks_count19:50:160
1047899171,1cyclictest4099-21H222:10:210
1047899171,15cyclictest0-21swapper/023:15:140
1047899170,2cyclictest9098-21sed22:00:000
1047899170,2cyclictest4035-21H222:10:210
1047899170,2cyclictest3989-21H222:10:210
1047899170,2cyclictest3983-21H222:10:210
1047899170,2cyclictest3979-21H222:10:210
1047899170,2cyclictest19494-21nfsd400:10:170
1047899170,2cyclictest19113-21grep19:25:140
1047899170,2cyclictest0-21swapper/019:30:150
1047899170,16cyclictest7522-21cut20:00:260
1047899170,16cyclictest7254-21cpuspeed_turbos23:50:140
1047899170,16cyclictest4035-21H222:10:210
1047899170,16cyclictest3991-21H222:10:210
1047899170,16cyclictest3989-21H222:10:210
1047899170,16cyclictest3981-21H222:10:210
1047899170,16cyclictest32112-21iwlist20:45:170
1047899170,16cyclictest32025-21apache_accesses22:40:110
1047899170,16cyclictest26294-21hddtemp_smartct20:35:160
1047899170,16cyclictest24830-21apache_processe21:30:150
1047899170,16cyclictest23149-21cat20:30:140
1047899170,16cyclictest2186-21expr20:50:130
1047899170,16cyclictest17423-21apache_accesses20:20:120
1047899170,16cyclictest15580-21cat22:10:140
1047899170,16cyclictest1526-21lxd00:20:360
1047899170,16cyclictest1526-21lxd00:20:360
1047899170,16cyclictest14858-21grep19:15:200
1047899170,16cyclictest14858-21grep19:15:190
1047899170,16cyclictest10795-21ntp_kernel_err22:00:210
1047899170,16cyclictest0-21swapper/019:55:160
1047899170,15cyclictest4035-21H222:10:210
1048099160,1cyclictest0-21swapper/220:00:042
1048099160,15cyclictest0-21swapper/219:25:222
10479991614,1cyclictest0-21swapper/119:30:181
1047999160,15cyclictest3450-21gsd-color20:50:201
1047999160,15cyclictest29093-21df_inode20:40:161
1047999160,15cyclictest16428-21sed21:15:021
1047999160,15cyclictest0-21swapper/120:10:161
10478991614,1cyclictest0-21swapper/020:55:200
10478991614,1cyclictest0-21swapper/019:45:210
10478991614,1cyclictest0-21swapper/019:20:120
10478991613,2cyclictest3985-21H222:10:210
10478991612,1cyclictest0-21swapper/023:05:140
1047899160,15cyclictest28771-21cstates20:40:150
1047899160,15cyclictest15375-21hddtemp_smartct20:15:150
1047899160,15cyclictest12555-21cat22:05:140
1047899160,15cyclictest0-21swapper/019:41:570
10478991513,1cyclictest244252chrt19:35:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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