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2026-04-20 - 07:01
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Mon Apr 20, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1669299225,11cyclictest0-21swapper/022:10:210
1670399216,1cyclictest0-21swapper/220:16:212
1669799212,18cyclictest0-21swapper/120:17:061
1669299210,18cyclictest0-21swapper/022:51:540
16692992016,3cyclictest0-21swapper/022:49:540
16692992013,4cyclictest0-21swapper/021:31:530
1670399193,15cyclictest28-21ksoftirqd/220:00:172
1670399192,16cyclictest25729-21fschecks_time00:10:152
16703991917,1cyclictest28-21ksoftirqd/200:20:542
1670399190,5cyclictest870-21systemd-logind21:56:522
1670399190,4cyclictest426-21systemd-udevd19:12:522
1669799193,15cyclictest0-21swapper/119:41:101
1669799192,1cyclictest0-21swapper/122:16:391
16697991913,4cyclictest0-21swapper/119:17:471
1669799190,4cyclictest399-20systemd-journal22:30:011
1669799190,18cyclictest0-21swapper/100:13:561
16692991916,1cyclictest0-21swapper/023:15:490
1669299191,3cyclictest0-21swapper/020:47:240
1669299191,16cyclictest0-21swapper/022:55:140
1669299190,16cyclictest4099-21H222:10:210
1670399183,14cyclictest0-21swapper/221:10:412
1670399182,2cyclictest5751-21php7.022:39:002
1670399182,15cyclictest3950-21C222:10:212
16703991816,1cyclictest32638-21mailstats19:35:202
16703991816,1cyclictest30338-21chrt19:30:572
16703991816,1cyclictest28-21ksoftirqd/223:35:142
16703991816,1cyclictest28-21ksoftirqd/220:50:142
16703991815,2cyclictest3202-21JS22:10:212
16703991815,2cyclictest25919-21ps22:15:202
16703991815,2cyclictest16716-21fschecks_count22:00:142
16703991815,2cyclictest0-21swapper/222:55:182
16703991814,3cyclictest2007-21systemd-journal23:20:222
16703991814,2cyclictest4035-21H222:10:212
1670399180,2cyclictest28937-21sshd20:27:432
1670399180,17cyclictest4035-21H222:10:212
1669799182,2cyclictest16691-21cyclictest21:45:031
1669799182,15cyclictest3207-21JS22:10:211
1669799182,15cyclictest13082-21grep22:50:181
16697991816,1cyclictest0-21swapper/123:52:501
16697991816,1cyclictest0-21swapper/121:10:001
16697991815,2cyclictest0-21swapper/100:00:181
16697991815,1cyclictest0-21swapper/119:14:351
1669799181,16cyclictest1085-21gdbus22:35:201
1669799180,2cyclictest3989-21H222:10:211
1669799180,2cyclictest3979-21H222:10:211
1669799180,2cyclictest25213-21munin-run19:25:011
1669299183,1cyclictest0-21swapper/019:14:170
1669299182,1cyclictest5597-21nfsd400:30:190
1669299182,15cyclictest0-21swapper/019:53:100
16692991815,2cyclictest27468-21cat22:20:150
1669299180,2cyclictest3976-21H222:10:210
1669299180,2cyclictest3976-21H222:10:210
1669299180,17cyclictest0-21swapper/000:02:580
1669299180,16cyclictest9129-21nfsd421:45:180
1669299180,15cyclictest0-21swapper/022:30:170
1670399172,15cyclictest28-21ksoftirqd/221:25:232
16703991715,1cyclictest291892chrt22:20:442
16703991715,1cyclictest0-21swapper/221:35:142
16703991714,2cyclictest5601-21lxd22:28:502
16703991714,2cyclictest3991-21H222:10:212
16703991714,2cyclictest26683-21sed21:20:182
16703991714,2cyclictest16464-21cat23:55:002
16703991714,2cyclictest13384-21mailstats20:55:222
1670399171,15cyclictest8973-21sed20:50:012
1670399171,15cyclictest239672chrt22:14:122
1670399171,15cyclictest0-21swapper/223:45:132
1670399170,2cyclictest31593-21cpuspeed_turbos21:30:142
1670399170,2cyclictest29541-21apache_volume20:30:132
1670399170,2cyclictest1708-21nfsd422:30:182
1670399170,2cyclictest15979-21grep21:00:222
1670399170,2cyclictest11635-21cut19:55:212
1670399170,1cyclictest3983-21H222:10:212
1670399170,1cyclictest3983-21H222:10:212
1670399170,16cyclictest9249-21grep23:40:172
1670399170,16cyclictest843-21systemd-network20:41:402
1670399170,16cyclictest2470-21pzem_power00:25:222
1670399170,16cyclictest2470-21pzem_power00:25:222
1670399170,16cyclictest20936-21ls23:05:172
1670399170,16cyclictest20015-21nvmesmart_nvme020:10:202
1670399170,16cyclictest16836-21cron21:05:012
1670399170,16cyclictest10458-21munin-plugin-st21:50:012
1669799172,1cyclictest17746-21nfsd423:55:181
16697991714,2cyclictest4147-21perf23:35:001
16697991714,2cyclictest4035-21H222:10:211
16697991714,2cyclictest31398-21cat19:35:131
16697991714,2cyclictest31213-21smartctl00:20:161
16697991714,2cyclictest1522-21lxd21:32:501
16697991714,1cyclictest0-21swapper/100:37:511
16697991713,3cyclictest5176-21cpuspeed_turbos23:35:141
1669799171,2cyclictest21617-21date22:10:001
1669799170,2cyclictest485-21cut20:35:161
1669799170,2cyclictest21955-21cpuspeed_turbos22:10:141
1669799170,2cyclictest17179-21latency_hist21:05:011
1669799170,2cyclictest14093-21perf21:00:001
1669799170,16cyclictest8468-21expr23:40:131
1669799170,16cyclictest6603-21cat22:40:141
1669799170,16cyclictest6257-21sed19:45:191
1669799170,16cyclictest4508-21kernelversion20:40:171
1669799170,16cyclictest3991-21H222:10:211
1669799170,16cyclictest3991-21H222:10:211
1669799170,16cyclictest31867-21perf20:35:011
1669799170,16cyclictest30526-21sendmail-mta23:23:261
1669799170,16cyclictest28826-21ls19:30:141
1669799170,16cyclictest28591-21tr22:20:191
1669799170,16cyclictest22184-21anvil21:11:371
1669799170,16cyclictest2007-21systemd-journal23:19:101
1669799170,16cyclictest17338-21nfsd422:00:181
1669799170,16cyclictest16766-21snapd23:25:481
1669799170,16cyclictest1565-21nfsd422:30:181
16692991714,2cyclictest8038-21uname00:35:180
16692991714,2cyclictest4867-21latency_hist21:40:010
16692991714,2cyclictest31873-21awk20:35:010
16692991714,2cyclictest21356-21nfsd421:10:190
16692991714,2cyclictest2007-21systemd-journal21:59:080
16692991714,2cyclictest1515-21lxd22:42:500
16692991714,2cyclictest11133-21kernelversion19:55:190
16692991713,3cyclictest5914-21tr22:40:000
16692991713,3cyclictest3976-21H222:10:210
16692991713,3cyclictest0-21swapper/023:11:160
1669299170,2cyclictest399-20systemd-journal21:10:010
1669299170,2cyclictest3983-21H222:10:210
1669299170,2cyclictest3575-21python300:30:000
1669299170,2cyclictest3575-21python300:30:000
1669299170,2cyclictest3450-21gsd-color21:50:220
1669299170,2cyclictest3450-21gsd-color21:50:220
1669299170,2cyclictest24321-21anvil00:08:270
1669299170,2cyclictest23986-21missed_timers21:15:170
1669299170,2cyclictest23521-21tune2fs19:20:150
1669299170,2cyclictest13776-21/usr/sbin/munin20:00:170
1669299170,2cyclictest10151-21lxd23:26:360
1669299170,1cyclictest3985-21H222:10:210
1669299170,1cyclictest3979-21H222:10:210
1669299170,1cyclictest3979-21H222:10:210
1669299170,1cyclictest0-21swapper/023:55:160
1669299170,16cyclictest4099-21H222:10:210
1669299170,16cyclictest31772-21fschecks_time19:35:140
1669299170,16cyclictest28330-21df00:15:140
1669299170,16cyclictest26800-21/usr/sbin/munin20:25:160
1669299170,16cyclictest25489-21/usr/sbin/munin20:20:200
1669299170,16cyclictest19723-21/usr/sbin/munin19:15:180
1669299170,16cyclictest19695-21sed20:10:180
1669299170,16cyclictest16855-21munin-run21:05:010
1669299170,16cyclictest13994-21master20:59:060
1669299170,16cyclictest11871-21awk23:45:180
16703991614,1cyclictest6047-21if_err_lxdbr021:40:172
16703991614,1cyclictest31794-21smartctl23:25:152
16703991614,1cyclictest0-21swapper/222:50:112
16703991614,1cyclictest0-21swapper/220:20:172
16703991614,1cyclictest0-21swapper/220:05:222
16703991614,1cyclictest0-21swapper/220:05:222
16703991614,1cyclictest0-21swapper/219:25:152
16703991613,2cyclictest24100-21updatedb.mlocat00:05:492
16703991613,2cyclictest19290-21cstates22:05:132
1670399161,1cyclictest91362sleep200:36:282
1670399160,15cyclictest7722-21expr19:50:142
1670399160,15cyclictest24792-21sed19:20:222
1670399160,15cyclictest23868-21sort21:15:172
1670399160,15cyclictest1835-21timerwakeupswit20:35:232
1670399160,15cyclictest0-21swapper/223:55:152
1670399160,15cyclictest0-21swapper/223:30:172
1670399160,15cyclictest0-21swapper/223:15:142
1670399160,15cyclictest0-21swapper/222:40:162
1670399160,15cyclictest0-21swapper/221:55:012
1670399160,15cyclictest0-21swapper/221:55:012
1670399160,15cyclictest0-21swapper/200:00:152
16697991614,1cyclictest25403-21nfsd420:20:201
16697991614,1cyclictest2130-21netstat00:25:201
16697991614,1cyclictest2130-21netstat00:25:201
16697991614,1cyclictest0-21swapper/123:00:161
16697991614,1cyclictest0-21swapper/121:55:151
16697991614,1cyclictest0-21swapper/121:50:131
16697991614,1cyclictest0-21swapper/121:50:131
16697991614,1cyclictest0-21swapper/121:37:321
16697991614,1cyclictest0-21swapper/119:55:191
16697991614,1cyclictest0-21swapper/119:25:101
16697991614,1cyclictest0-21swapper/100:05:141
16697991613,2cyclictest4099-21H222:10:211
1669799160,1cyclictest28382-21/usr/sbin/munin21:25:191
1669799160,15cyclictest5785-21sh00:30:191
1669799160,15cyclictest24662-21timerandwakeup23:10:211
1669799160,15cyclictest15149-21fschecks_time22:55:151
1669799160,15cyclictest10750-21ls23:45:131
1669799160,15cyclictest0-21swapper/123:05:181
1669799160,15cyclictest0-21swapper/122:45:131
1669799160,15cyclictest0-21swapper/121:25:011
1669799160,15cyclictest0-21swapper/121:15:111
1669799160,15cyclictest0-21swapper/120:25:221
1669799160,15cyclictest0-21swapper/119:50:181
1669799160,15cyclictest0-21swapper/100:15:171
16692991615,1cyclictest9-21ksoftirqd/023:06:310
16692991614,1cyclictest0-21swapper/022:05:130
16692991614,1cyclictest0-21swapper/020:35:150
16692991614,1cyclictest0-21swapper/020:15:140
16692991614,1cyclictest0-21swapper/000:10:130
16692991613,2cyclictest4099-21H222:10:210
1669299160,2cyclictest1841-21expr23:30:130
1669299160,1cyclictest28606-21expr21:25:150
1669299160,1cyclictest25719-21cpuspeed_turbos19:25:150
1669299160,15cyclictest29949-21apt-get22:25:130
1669299160,15cyclictest17599-21ls23:00:150
1669299160,15cyclictest16743-21snapd20:50:160
1669299160,15cyclictest0-21swapper/023:50:200
1669299160,15cyclictest0-21swapper/023:20:140
1669299160,15cyclictest0-21swapper/021:20:150
1669299160,15cyclictest0-21swapper/020:40:160
1669299150,1cyclictest17142-21latency22:00:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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