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2026-05-26 - 17:26
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Tue May 26, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7364992321,0cyclictest0-21swapper/109:11:561
736499230,5cyclictest0-21swapper/110:14:391
7362992220,1cyclictest1100-21snmpd10:50:180
7364992114,6cyclictest0-21swapper/109:43:391
736499210,17cyclictest0-21swapper/111:08:591
736299214,13cyclictest0-21swapper/012:15:420
736299211,5cyclictest0-21swapper/007:35:210
7365992017,2cyclictest11992-21nfsd407:15:172
7365992016,3cyclictest0-21swapper/208:24:592
736299204,15cyclictest12529-21sessionclean10:09:000
736299204,15cyclictest0-21swapper/008:05:000
736299200,17cyclictest3983-21H222:10:210
736599193,15cyclictest12091-21timerwakeupswit10:05:222
736599192,16cyclictest0-21swapper/210:30:132
7365991916,2cyclictest25730-21tr11:30:122
7365991915,3cyclictest0-21swapper/209:43:002
736599190,5cyclictest0-21swapper/210:52:202
736599190,18cyclictest3987-21H222:10:212
736599190,18cyclictest0-21swapper/211:40:202
736599190,16cyclictest3991-21H222:10:212
736499192,16cyclictest21578-21smtpd07:33:161
7364991917,1cyclictest0-21swapper/107:50:541
7364991916,2cyclictest993-21dbus-daemon09:45:201
7364991913,5cyclictest0-21swapper/109:05:171
736499190,2cyclictest3983-21H222:10:211
736499190,18cyclictest0-21swapper/107:40:051
736499190,16cyclictest4099-21H222:10:211
736299192,16cyclictest3991-21H222:10:210
736299192,16cyclictest2254-21fschecks_count11:45:140
7362991917,1cyclictest0-21swapper/011:15:080
7362991916,2cyclictest32240-21date12:40:020
736299190,16cyclictest3983-21H222:10:210
736599182,1cyclictest18224-21idleruntime-cro10:20:002
736599182,15cyclictest8959-21expr11:00:142
7365991816,1cyclictest0-21swapper/211:29:072
7365991816,1cyclictest0-21swapper/208:35:202
7365991815,2cyclictest19988-21ntpq10:20:182
7365991814,3cyclictest14506-21snapd09:00:282
7365991814,3cyclictest14506-21snapd09:00:282
7365991814,3cyclictest0-21swapper/208:46:382
736599181,1cyclictest0-21swapper/211:50:182
736599181,16cyclictest28152-21tr10:35:192
736599180,3cyclictest3987-21H222:10:212
736599180,3cyclictest30283-21sshd11:35:472
736599180,3cyclictest17777-21expr09:20:142
736599180,2cyclictest3981-21H222:10:212
736599180,2cyclictest3979-21H222:10:212
736599180,1cyclictest0-21swapper/207:29:382
736599180,17cyclictest4099-21H222:10:212
736599180,16cyclictest4099-21H222:10:212
736599180,16cyclictest3989-21H222:10:212
736599180,16cyclictest3989-21H222:10:212
736499182,15cyclictest249772sleep111:27:391
736499182,15cyclictest11666-21uname12:00:201
736499182,15cyclictest11666-21uname12:00:201
7364991817,1cyclictest21-21ksoftirqd/109:51:001
7364991816,1cyclictest21-21ksoftirqd/112:31:091
7364991815,2cyclictest3979-21H222:10:211
7364991815,2cyclictest1103-21ntpd12:10:201
7364991815,2cyclictest0-21swapper/110:43:131
7364991814,3cyclictest4099-21H222:10:211
7364991814,3cyclictest4035-21H222:10:211
7364991814,3cyclictest4035-21H222:10:211
7364991814,3cyclictest0-21swapper/110:55:071
7364991814,2cyclictest0-21swapper/111:12:291
7364991812,3cyclictest0-21swapper/107:18:031
736499181,16cyclictest5753-21date10:55:011
736499180,2cyclictest3983-21H222:10:211
736499180,17cyclictest843-21systemd-network11:03:241
736499180,17cyclictest3987-21H222:10:211
736499180,17cyclictest25729-21grep11:30:121
736499180,16cyclictest3991-21H222:10:211
736499180,16cyclictest3976-21H222:10:211
736499180,16cyclictest14043-21cpuspeed_turbos07:20:141
736499180,15cyclictest3985-21H222:10:211
736299182,15cyclictest9-21ksoftirqd/010:15:190
736299182,15cyclictest147552chrt08:15:560
7362991816,1cyclictest0-21swapper/011:09:410
7362991814,3cyclictest22231-21irqstats10:25:150
7362991814,2cyclictest3991-21H222:10:210
736299181,2cyclictest22088-21chrt11:20:250
736299181,16cyclictest10340-21grep12:00:130
736299181,16cyclictest10340-21grep12:00:130
736299180,3cyclictest878-21in:imuxsock09:38:590
736299180,2cyclictest4035-21H222:10:210
736299180,2cyclictest3987-21H222:10:210
736299180,2cyclictest3987-21H222:10:210
736299180,2cyclictest3983-21H222:10:210
736299180,2cyclictest3981-21H222:10:210
736299180,17cyclictest28966-21needreboot07:45:180
736299180,17cyclictest21401-21tr12:20:130
736299180,15cyclictest3985-21H222:10:210
7365991715,1cyclictest28-21ksoftirqd/209:51:582
7365991715,1cyclictest0-21swapper/208:40:132
7365991714,2cyclictest4099-21H222:10:212
7365991714,2cyclictest25952-21vmstat12:25:202
7365991714,2cyclictest25952-21vmstat12:25:192
7365991714,2cyclictest14605-21timerwakeupswit08:15:212
7365991714,2cyclictest11550-21ntp_offset12:00:182
7365991714,2cyclictest11550-21ntp_offset12:00:182
7365991714,2cyclictest1085-21gdbus09:45:202
7365991714,1cyclictest0-21swapper/208:55:152
7365991713,3cyclictest4035-21H222:10:212
7365991713,3cyclictest3989-21H222:10:212
736599170,2cyclictest3985-21H222:10:212
736599170,2cyclictest3976-21H222:10:212
736599170,2cyclictest3976-21H222:10:212
736599170,2cyclictest3414-21master08:51:142
736599170,2cyclictest2397-21missed_timers07:55:172
736599170,16cyclictest7392-21pzem_current10:55:182
736599170,16cyclictest4035-21H222:10:212
736599170,16cyclictest3991-21H222:10:212
736599170,16cyclictest3989-21H222:10:212
736599170,16cyclictest3985-21H222:10:212
736599170,16cyclictest3976-21H222:10:212
736599170,16cyclictest27429-21fschecks_time12:30:142
736599170,16cyclictest21931-21fschecks_count08:30:142
736599170,16cyclictest16734-21latency_hist11:15:002
736599170,16cyclictest0-21swapper/209:30:152
736599170,15cyclictest0-21swapper/212:19:422
7364991714,2cyclictest7418-21apache_accesses11:55:101
7364991714,2cyclictest31603-21cstates11:40:131
7364991714,2cyclictest21266-21missed_timers11:20:171
7364991714,2cyclictest18768-21ntp_kernel_pll_11:15:181
736499171,2cyclictest16788-21cpuspeed_turbos07:25:131
736499171,15cyclictest20175-21/usr/sbin/munin09:25:151
736499171,15cyclictest20175-21/usr/sbin/munin09:25:141
736499170,2cyclictest8043-21/usr/sbin/munin07:10:221
736499170,2cyclictest5899-21nfsd411:50:181
736499170,2cyclictest3989-21H222:10:211
736499170,2cyclictest3981-21H222:10:211
736499170,2cyclictest3976-21H222:10:211
736499170,2cyclictest31259-21timerandwakeup12:35:211
736499170,2cyclictest22405-21sed08:30:161
736499170,16cyclictest4035-21H222:10:211
736499170,16cyclictest3987-21H222:10:211
736499170,16cyclictest3987-21H222:10:211
736499170,16cyclictest28737-21expr11:35:131
736499170,16cyclictest28733-21grep07:45:181
736499170,16cyclictest27490-21timerwakeupswit09:35:211
736499170,16cyclictest24664-21cut12:25:121
736499170,16cyclictest24664-21cut12:25:121
736499170,16cyclictest22813-21pzem_energy12:20:201
736499170,16cyclictest1085-21gdbus08:35:221
736499170,15cyclictest3983-21H222:10:211
736499170,15cyclictest3983-21H222:10:211
736299172,1cyclictest0-21swapper/009:45:000
7362991715,1cyclictest0-21swapper/009:50:130
7362991714,2cyclictest8887-21ntp_states10:00:190
7362991714,2cyclictest3991-21H222:10:210
7362991714,2cyclictest29920-21/usr/sbin/munin10:40:150
7362991714,2cyclictest24696-21tune2fs08:35:160
7362991714,2cyclictest14686-21/usr/sbin/munin09:15:190
7362991714,2cyclictest14550-21snapd08:07:580
7362991714,1cyclictest0-21swapper/009:00:150
7362991714,1cyclictest0-21swapper/009:00:140
736299170,2cyclictest7839-21apt-config07:10:010
736299170,2cyclictest5601-21lxd11:50:430
736299170,2cyclictest4035-21H222:10:210
736299170,2cyclictest3991-21H222:10:210
736299170,2cyclictest3991-21H222:10:210
736299170,2cyclictest3985-21H222:10:210
736299170,2cyclictest32132-21/usr/sbin/munin07:50:170
736299170,2cyclictest29850-21/usr/sbin/munin11:35:200
736299170,2cyclictest24013-21apache_processe12:25:080
736299170,2cyclictest24013-21apache_processe12:25:080
736299170,2cyclictest18603-21apache_accesses10:20:120
736299170,2cyclictest18585-21/usr/sbin/munin08:25:120
736299170,2cyclictest12328-21/usr/sbin/munin07:15:190
736299170,16cyclictest9146-21timerandwakeup11:55:200
736299170,16cyclictest4099-21H222:10:210
736299170,16cyclictest4035-21H222:10:210
736299170,16cyclictest3976-21H222:10:210
736299170,16cyclictest31391-21apache212:05:160
736299170,16cyclictest31267-21apache_volume09:45:110
736299170,16cyclictest27984-21awk12:30:180
736299170,16cyclictest27367-21latency_hist07:45:010
736299170,16cyclictest20774-21/usr/sbin/munin07:30:180
736299170,16cyclictest16835-21awk08:20:150
736299170,16cyclictest16465-21grep12:10:150
736299170,16cyclictest14504-21snapd09:05:280
736299170,16cyclictest1340-21grep07:55:130
7365991614,1cyclictest18561-21/usr/sbin/munin08:25:162
7365991614,1cyclictest0-21swapper/210:10:122
7365991614,1cyclictest0-21swapper/209:10:152
7365991614,1cyclictest0-21swapper/208:10:152
7365991614,1cyclictest0-21swapper/208:00:162
736599160,1cyclictest0-21swapper/212:35:132
736599160,1cyclictest0-21swapper/209:27:202
736599160,1cyclictest0-21swapper/209:27:202
736599160,15cyclictest3985-21H222:10:212
736599160,15cyclictest22274-21latency12:20:162
736599160,15cyclictest0-21swapper/207:45:182
736599160,15cyclictest0-21swapper/207:10:112
7364991614,1cyclictest0-21swapper/108:25:151
7364991614,1cyclictest0-21swapper/108:10:151
7364991613,2cyclictest5770-21nfsd408:00:181
7364991613,2cyclictest22155-21/usr/sbin/munin07:35:111
7364991613,2cyclictest18539-21apache_accesses12:15:111
7364991612,1cyclictest3976-21H222:10:211
736499160,15cyclictest30376-21http_loadtime08:45:151
736499160,15cyclictest15072-21cron08:20:011
736499160,15cyclictest14168-21open_files08:15:181
736499160,15cyclictest0-21swapper/108:05:151
7362991614,1cyclictest20744-21expr09:25:130
7362991614,1cyclictest20744-21expr09:25:130
7362991614,1cyclictest0-21swapper/008:50:210
736299161,1cyclictest0-21swapper/008:30:120
736299160,15cyclictest10406-21cat08:10:160
7362991514,1cyclictest0-21swapper/010:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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