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2026-08-01 - 14:27
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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 Aug 01, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3819992321,1cyclictest0-21swapper/220:15:182
381999230,5cyclictest0-21swapper/200:01:042
381999230,18cyclictest0-21swapper/222:20:162
381799230,5cyclictest0-21swapper/022:54:140
381799230,5cyclictest0-21swapper/022:27:220
3817992214,4cyclictest0-21swapper/022:30:440
381999210,19cyclictest25292-21grep21:40:152
381899214,16cyclictest0-21swapper/123:26:421
381999200,19cyclictest0-21swapper/220:06:022
381899202,1cyclictest0-21swapper/119:50:231
381999193,15cyclictest0-21swapper/222:52:552
3819991914,3cyclictest27142-21nfsd420:45:192
381999190,1cyclictest0-21swapper/221:29:012
381999190,17cyclictest2426-21proc_pri21:55:202
3818991914,4cyclictest843-21systemd-network22:24:431
381899190,18cyclictest30847-21cut21:50:171
3817991919,0cyclictest0-21swapper/023:12:360
3817991916,2cyclictest5343-21latency23:55:180
3817991911,4cyclictest0-21swapper/022:44:200
381999182,15cyclictest116402sleep219:20:362
3819991816,1cyclictest24267-21switchtime23:30:222
3819991815,2cyclictest428-21mailstats20:55:212
3819991815,2cyclictest0-21swapper/222:30:172
3819991813,4cyclictest0-21swapper/222:35:152
381999181,16cyclictest5601-21lxd19:50:512
381999181,16cyclictest14355-21taskset22:15:512
381999180,17cyclictest15698-21awk23:15:182
381899182,1cyclictest10381-21processes20:15:201
3818991815,2cyclictest8804-21chrt22:06:381
3818991814,3cyclictest3351-21lxd20:50:501
3818991814,3cyclictest30374-21sshd23:43:401
3818991813,2cyclictest6300-21tr20:10:201
381899181,16cyclictest13834-21ps22:15:201
381799182,15cyclictest14550-21snapd21:02:520
381799182,15cyclictest0-21swapper/021:43:020
3817991815,2cyclictest12507-21plymouth00:10:170
3817991815,1cyclictest0-21swapper/023:22:020
3817991814,3cyclictest7261-21missed_timers20:10:230
381799181,16cyclictest14896-21nfsd421:20:180
381799180,17cyclictest1079-21cups-browsed20:15:210
381799180,16cyclictest3450-21gsd-color20:20:090
3819991715,1cyclictest2291-21latency23:50:172
3819991715,1cyclictest2291-21latency23:50:162
3819991715,1cyclictest0-21swapper/223:10:132
3819991715,1cyclictest0-21swapper/222:00:152
3819991714,2cyclictest6244-21fschecks_time23:00:162
3819991714,2cyclictest30765-21nvmesmart_nvme022:45:172
3819991714,2cyclictest3053-21systemd-logind23:48:522
3819991714,2cyclictest3053-21systemd-logind23:22:512
3819991714,2cyclictest29262-21fschecks_time20:50:152
3819991714,2cyclictest26940-21expr22:40:132
3819991714,2cyclictest26430-21irqstats00:35:162
3819991714,2cyclictest26078-21chrt19:48:222
3819991714,2cyclictest25283-21apache_volume23:35:122
3819991714,2cyclictest24777-21sort20:40:222
3819991714,2cyclictest21991-21if_enp1s019:40:162
3819991714,2cyclictest18151-21sed22:25:022
3819991714,2cyclictest14505-21snapd00:10:322
381999171,1cyclictest0-21swapper/221:20:012
381999170,2cyclictest8718-21apache_accesses23:05:112
381999170,2cyclictest6905-21/usr/sbin/munin19:15:172
381999170,2cyclictest28617-21nfsd421:45:192
381999170,2cyclictest28254-21cat23:40:122
381999170,2cyclictest2504-21/usr/sbin/munin22:55:132
381999170,2cyclictest20410-21df23:25:132
381999170,2cyclictest19687-21nvmesmart_nvme019:35:202
381999170,2cyclictest1767-21/usr/sbin/munin21:00:142
381999170,2cyclictest1526-21lxd19:14:502
381999170,2cyclictest1526-21lxd19:14:502
381999170,2cyclictest14598-21latency00:15:172
381999170,1cyclictest0-21swapper/220:20:112
381999170,16cyclictest7815-21memory22:05:192
381999170,16cyclictest6860-21fschecks_time20:10:222
381999170,16cyclictest5462-21fschecks_count21:05:162
381999170,16cyclictest4884-21expr23:55:142
381999170,16cyclictest21596-21tr20:35:192
381999170,16cyclictest19680-21fschecks_count21:30:152
381999170,16cyclictest14186-21timerandwakeup19:25:222
381999170,16cyclictest0-21swapper/222:10:112
3818991715,1cyclictest0-21swapper/122:53:581
3818991715,1cyclictest0-21swapper/122:10:171
3818991714,2cyclictest7712-21apt-get21:10:131
3818991714,2cyclictest5594-21apache_volume23:00:131
3818991714,2cyclictest420-21wc20:55:201
3818991714,2cyclictest30913-21apt23:45:121
3818991714,2cyclictest29362-21apache_processe22:45:101
3818991714,2cyclictest28680-21nfsd421:45:181
3818991714,2cyclictest27850-21cut22:40:171
3818991714,2cyclictest26322-21/usr/sbin/munin23:35:181
3818991714,2cyclictest25767-21sed21:40:181
3818991714,2cyclictest19226-21latency22:25:161
3818991714,2cyclictest18157-21nfsd400:20:211
3818991714,2cyclictest15287-21dpkg19:30:011
3818991714,2cyclictest14162-21munin-plugin-st23:15:021
3818991712,1cyclictest0-21swapper/120:40:181
381899171,15cyclictest0-21swapper/120:49:101
381899170,2cyclictest5420-21taskset20:08:071
381899170,2cyclictest5145-21latency_hist23:00:001
381899170,2cyclictest3976-21H222:10:211
381899170,2cyclictest21928-21cpuspeed_turbos21:35:141
381899170,2cyclictest16257-21smartctl19:30:131
381899170,2cyclictest15444-21cat20:25:181
381899170,2cyclictest15126-21processes00:15:191
381899170,16cyclictest7251-21cpuspeed_turbos00:00:131
381899170,16cyclictest6404-21bounce23:56:161
381899170,16cyclictest3656-21ls22:00:011
381899170,16cyclictest30741-21grep19:55:191
381899170,16cyclictest27532-21trivial-rewrite00:36:151
381899170,16cyclictest26553-21cut22:40:001
381899170,16cyclictest22356-21grep19:40:181
381899170,16cyclictest21221-21grep22:30:121
381899170,16cyclictest17338-21grep20:30:141
381899170,16cyclictest16293-21postgres21:25:051
381899170,16cyclictest14500-21snapd19:17:581
381899170,16cyclictest11026-21nfsd419:20:191
381899170,16cyclictest10435-21sshd00:09:201
381899170,16cyclictest1035-21thermald23:20:001
381899170,16cyclictest10151-21lxd20:22:501
381799177,5cyclictest0-21swapper/023:40:000
3817991714,2cyclictest9425-21hddtemp_smartct23:05:140
3817991714,2cyclictest5601-21lxd19:48:510
3817991714,2cyclictest399-20systemd-journal23:05:000
3817991714,2cyclictest20665-21mailstats21:30:200
3817991714,2cyclictest14464-21cpuspeed_turbos23:15:140
3817991714,2cyclictest1100-21snmpd22:24:260
3817991713,3cyclictest3981-21H222:10:210
3817991712,4cyclictest0-21swapper/020:39:350
381799171,1cyclictest0-21swapper/019:33:440
381799171,15cyclictest4099-21H222:10:210
381799171,15cyclictest10638-21latency22:10:170
381799171,15cyclictest0-21swapper/020:28:300
381799171,15cyclictest0-21swapper/020:00:020
381799170,2cyclictest8405-21fschecks_time21:10:160
381799170,2cyclictest399-20systemd-journal21:20:000
381799170,2cyclictest29357-21/usr/sbin/munin19:55:110
381799170,2cyclictest27181-21nfsd420:45:190
381799170,2cyclictest19892-21/usr/sbin/munin23:25:130
381799170,2cyclictest18336-21trivial-rewrite21:26:150
381799170,2cyclictest14799-21/usr/sbin/munin00:15:160
381799170,16cyclictest8668-21sed00:00:190
381799170,16cyclictest8390-21wc19:15:210
381799170,16cyclictest4340-21missed_timers20:05:200
381799170,16cyclictest31304-21apache_accesses20:55:110
381799170,16cyclictest30572-21awk22:45:160
381799170,16cyclictest29252-21grep20:50:160
381799170,16cyclictest28714-21grep21:45:180
381799170,16cyclictest2616-21cat21:55:220
381799170,16cyclictest26107-21df_inode00:35:130
381799170,16cyclictest24628-21cut21:40:000
381799170,16cyclictest19266-21perf00:25:000
381799170,16cyclictest14693-21cron22:20:010
3819991615,1cyclictest0-21swapper/200:25:132
3819991614,1cyclictest0-21swapper/221:20:142
3819991614,1cyclictest0-21swapper/220:25:182
3819991614,1cyclictest0-21swapper/220:00:012
3819991614,1cyclictest0-21swapper/219:30:172
3819991614,1cyclictest0-21swapper/200:30:112
381999160,1cyclictest0-21swapper/220:30:112
381999160,15cyclictest7704-21apache_accesses21:10:112
381999160,15cyclictest29449-21/usr/sbin/munin19:55:142
381999160,15cyclictest16949-21apache_accesses00:20:132
381999160,15cyclictest100652sleep200:06:362
381999160,15cyclictest0-21swapper/221:50:142
381999160,15cyclictest0-21swapper/221:35:132
3818991614,1cyclictest4035-21H222:10:211
3818991614,1cyclictest4035-21H222:10:211
3818991614,1cyclictest3450-21gsd-color21:00:041
3818991614,1cyclictest3201-21JS22:10:211
3818991614,1cyclictest20265-21forks00:25:141
3818991614,1cyclictest0-21swapper/123:50:131
3818991614,1cyclictest0-21swapper/123:50:131
3818991614,1cyclictest0-21swapper/123:05:011
3818991614,1cyclictest0-21swapper/122:00:141
3818991614,1cyclictest0-21swapper/121:20:221
3818991614,1cyclictest0-21swapper/121:15:181
3818991614,1cyclictest0-21swapper/120:35:141
3818991613,2cyclictest25118-21nfsd419:45:191
381899160,1cyclictest0-21swapper/121:05:241
381899160,1cyclictest0-21swapper/119:35:181
381899160,15cyclictest20469-21awk21:30:181
381899160,15cyclictest0-21swapper/123:30:131
381899160,15cyclictest0-21swapper/123:20:131
3817991614,1cyclictest0-21swapper/022:55:170
3817991614,1cyclictest0-21swapper/020:40:170
3817991614,1cyclictest0-21swapper/020:30:100
3817991614,1cyclictest0-21swapper/019:50:170
3817991614,1cyclictest0-21swapper/019:25:010
3817991614,1cyclictest0-21swapper/000:30:120
3817991613,2cyclictest19673-21apache_volume00:25:130
381799160,2cyclictest24333-21fschecks_count22:35:130
381799160,1cyclictest3982-21H222:10:210
381799160,1cyclictest0-21swapper/023:50:140
381799160,1cyclictest0-21swapper/023:50:130
381799160,1cyclictest0-21swapper/023:31:420
381799160,1cyclictest0-21swapper/019:10:180
381799160,1cyclictest0-21swapper/019:10:170
381799160,15cyclictest6734-21date22:05:000
381799160,15cyclictest0-21swapper/023:45:130
381799160,15cyclictest0-21swapper/022:00:160
381799160,15cyclictest0-21swapper/021:50:220
381799160,15cyclictest0-21swapper/021:05:160
381799160,15cyclictest0-21swapper/019:40:160
381799160,15cyclictest0-21swapper/019:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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