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2026-06-15 - 10:48
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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 Mon Jun 15, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12184992710,11cyclictest26817-21latency_hist22:30:002
1218499250,20cyclictest9304-21nfsd420:00:192
1217899230,5cyclictest0-21swapper/119:57:011
1217499230,5cyclictest0-21swapper/023:12:020
12184992222,0cyclictest0-21swapper/220:34:062
1217499226,14cyclictest0-21swapper/019:49:590
1217499220,17cyclictest0-21swapper/000:15:180
1218499214,2cyclictest23037-21grep22:20:182
1218499213,17cyclictest0-21swapper/221:00:022
12184992114,3cyclictest0-21swapper/223:45:522
12184992114,3cyclictest0-21swapper/219:51:492
1218499210,3cyclictest0-21swapper/220:25:142
1218499210,19cyclictest399-20systemd-journal20:45:002
1218499210,18cyclictest22395-21grep23:15:192
12174992121,0cyclictest0-21swapper/020:10:160
12174992113,4cyclictest0-21swapper/019:20:140
1218499203,2cyclictest15110-21expr00:00:162
1218499200,17cyclictest0-21swapper/223:00:132
1217499204,9cyclictest0-21swapper/020:25:010
12174992015,4cyclictest28379-21http_loadtime22:30:180
12174992015,4cyclictest28379-21http_loadtime22:30:170
1218499192,16cyclictest0-21swapper/221:15:592
1218499192,16cyclictest0-21swapper/221:09:582
12184991915,3cyclictest0-21swapper/223:37:192
12184991915,3cyclictest0-21swapper/200:20:522
1218499191,16cyclictest0-21swapper/221:45:012
1217899193,15cyclictest0-21swapper/119:10:131
1217899190,18cyclictest0-21swapper/121:18:541
1217899190,17cyclictest24649-21nfsd421:25:191
1217499193,1cyclictest4173-21expr20:50:130
1217499192,16cyclictest8114-21cpuspeed_turbos21:55:140
1217499192,16cyclictest29975-21cut19:40:160
12174991916,2cyclictest26616-21tlsmgr23:22:430
12174991916,2cyclictest2220-21cat00:35:130
12174991915,3cyclictest0-21swapper/019:40:020
12174991914,3cyclictest0-21swapper/021:10:520
1217499190,18cyclictest0-21swapper/020:40:140
1218499183,1cyclictest0-21swapper/219:23:382
1218499182,15cyclictest30805-21awk23:30:162
1218499182,15cyclictest224712sleep200:12:472
1218499182,15cyclictest0-21swapper/222:00:002
1218499182,15cyclictest0-21swapper/221:10:212
1218499182,15cyclictest0-21swapper/219:15:192
12184991816,1cyclictest26039-21sh23:25:002
12184991816,1cyclictest17594-21grep20:15:192
12184991815,2cyclictest31147-21latency_hist00:30:012
12184991815,2cyclictest29091-21grep20:35:212
12184991815,2cyclictest13610-21apache_processe20:10:112
12184991814,3cyclictest0-21swapper/220:06:072
1218499181,2cyclictest14631-21nfsd422:05:192
1218499181,16cyclictest27677-21taskset21:30:222
1218499181,16cyclictest0-21swapper/223:42:012
1218499180,3cyclictest24044-21uniq19:30:162
1218499180,3cyclictest12240-21grep23:00:002
1218499180,1cyclictest0-21swapper/221:39:082
1218499180,17cyclictest5809-21sort21:50:152
1218499180,17cyclictest28479-21sessionclean19:39:012
1218499180,17cyclictest24301-21nfsd400:15:192
1218499180,17cyclictest19743-21cut20:20:162
1218499180,16cyclictest0-21swapper/222:46:012
1218499180,15cyclictest0-21swapper/223:05:202
1217899182,15cyclictest21-21ksoftirqd/120:05:151
12178991815,2cyclictest24847-21cat00:15:211
12178991815,2cyclictest0-21swapper/100:11:071
1217899181,3cyclictest0-21swapper/119:49:161
1217899181,16cyclictest27721-21nfsd423:25:171
1217899181,16cyclictest13585-21/usr/sbin/munin20:10:141
1217899180,3cyclictest14504-21snapd20:22:581
1217899180,2cyclictest3976-21H222:10:211
1217499182,7cyclictest0-21swapper/020:55:070
1217499182,15cyclictest0-21swapper/020:50:020
12174991815,2cyclictest9371-21ls23:50:140
12174991815,2cyclictest6976-21expr23:45:140
12174991815,2cyclictest5104-21grep22:45:150
12174991815,2cyclictest20247-21nfsd422:15:180
12174991814,3cyclictest0-21swapper/022:55:130
1217499181,16cyclictest28486-21sed21:35:000
1217499180,3cyclictest5658-21python323:45:000
1217499180,3cyclictest0-21swapper/000:25:070
1217499180,15cyclictest0-21swapper/021:45:150
12184991715,1cyclictest71272chrt22:50:062
12184991715,1cyclictest31881-21cut22:35:202
12184991715,1cyclictest0-21swapper/221:25:142
12184991714,2cyclictest843-21systemd-network22:43:312
12184991714,2cyclictest20554-21pzem22:15:202
12184991714,2cyclictest1909-21grep00:35:142
12184991714,2cyclictest0-21swapper/222:10:182
1218499170,2cyclictest3225-21sort21:45:192
1218499170,2cyclictest31829-21cpuspeed_turbos19:45:142
1218499170,2cyclictest28180-21cstates22:30:152
1218499170,2cyclictest28180-21cstates22:30:152
1218499170,2cyclictest18768-21cstates23:10:122
1218499170,2cyclictest13807-21expr19:10:172
1218499170,16cyclictest9559-21cstates23:50:132
1218499170,16cyclictest912-21awk20:45:102
1218499170,16cyclictest6620-21ntpq19:55:192
1218499170,16cyclictest5276-21awk20:50:182
1218499170,16cyclictest3450-21gsd-color19:41:002
1218499170,16cyclictest21032-21cat19:25:122
1218499170,16cyclictest21032-21cat19:25:112
1218499170,16cyclictest17352-21apache_processe00:05:122
1218499170,16cyclictest12838-21latency23:55:172
1218499170,16cyclictest11646-21chrt21:02:332
1218499170,16cyclictest11208-21expr22:00:132
1218499170,16cyclictest0-21swapper/223:25:132
1218499170,16cyclictest0-21swapper/221:20:092
1218499170,16cyclictest0-21swapper/200:30:122
12178991716,1cyclictest0-21swapper/123:32:151
12178991715,1cyclictest21-21ksoftirqd/121:40:131
12178991715,1cyclictest0-21swapper/123:08:031
12178991714,3cyclictest0-21swapper/121:31:521
12178991714,2cyclictest9760-21cut21:00:141
12178991714,2cyclictest8657-21fschecks_time20:00:151
12178991714,2cyclictest7534-21idleruntime20:55:151
12178991714,2cyclictest3983-21H222:10:211
12178991714,2cyclictest21256-21fschecks_count21:20:121
12178991714,2cyclictest17192-21taskset21:11:211
12178991714,2cyclictest1526-21lxd00:00:341
12178991714,2cyclictest13564-21tr22:05:141
12178991714,2cyclictest12508-21cpuspeed_turbos21:05:141
12178991714,2cyclictest10580-21ps23:50:191
12178991713,3cyclictest1738-21http_loadtime20:45:141
1217899171,15cyclictest3386-21processes00:35:191
1217899170,2cyclictest3985-21H222:10:211
1217899170,2cyclictest1526-21lxd20:50:481
1217899170,16cyclictest8510-21taskset23:47:391
1217899170,16cyclictest6291-21missed_timers21:50:191
1217899170,16cyclictest3976-21H222:10:211
1217899170,16cyclictest3843-21nvmesmart_nvme019:50:191
1217899170,16cyclictest31510-21cpuspeed_turbos00:30:121
1217899170,16cyclictest30659-21expr22:35:121
1217899170,16cyclictest30251-21nfsd419:40:171
1217899170,16cyclictest27490-21nfsd419:35:181
1217899170,16cyclictest25511-21expr20:30:131
1217899170,16cyclictest1523-21lxd20:44:491
1217899170,16cyclictest14997-21ls23:05:001
1217899170,16cyclictest12219-21expr23:55:131
1217899170,16cyclictest0-21swapper/120:15:151
12174991715,1cyclictest975-21chrt00:31:430
12174991715,1cyclictest0-21swapper/023:35:140
12174991714,2cyclictest3989-21H222:10:210
12174991714,2cyclictest32176-21expr21:40:150
12174991714,2cyclictest24820-21expr19:30:200
12174991714,2cyclictest23353-21/usr/sbin/munin21:25:170
12174991714,2cyclictest22502-21cstates20:25:140
12174991714,2cyclictest22037-21ls22:20:130
12174991714,2cyclictest15737-21expr23:05:140
12174991714,2cyclictest1390-21cstates22:40:130
12174991714,2cyclictest1100-21snmpd22:00:210
12174991714,2cyclictest10200-21tune2fs21:00:150
12174991714,2cyclictest0-21swapper/000:20:170
12174991713,3cyclictest13311-21fschecks_time23:00:130
1217499170,2cyclictest7965-21/usr/sbin/munin20:00:210
1217499170,2cyclictest5719-21cat21:50:140
1217499170,2cyclictest31656-21awk22:35:160
1217499170,2cyclictest28978-21latency_hist23:30:000
1217499170,2cyclictest28152-21expr20:35:150
1217499170,2cyclictest25395-21cstates20:30:140
1217499170,2cyclictest20978-21expr19:25:120
1217499170,2cyclictest20978-21expr19:25:110
1217499170,2cyclictest20968-21/usr/sbin/munin23:15:170
1217499170,2cyclictest13673-21nvmesmart_nvme021:05:210
1217499170,16cyclictest4810-21cron19:55:010
1217499170,16cyclictest455-21plymouthd22:10:140
1217499170,16cyclictest28781-21apt-get23:30:010
1217499170,16cyclictest2199-21dpkg19:50:120
1217499170,16cyclictest18064-21cut21:15:140
1217499170,16cyclictest17998-21fschecks_count00:05:150
1217499170,16cyclictest16533-21cpuspeed_turbos20:15:150
1217499170,16cyclictest15184-21chrt19:15:070
1217499170,16cyclictest14595-21find00:00:120
1217499170,16cyclictest12001-21cpuspeed_turbos23:55:130
1217499170,16cyclictest0-21swapper/000:11:140
12178991615,1cyclictest21-21ksoftirqd/122:00:131
12178991614,1cyclictest25188-21fschecks_time22:25:151
12178991614,1cyclictest206612chrt19:25:011
12178991614,1cyclictest206612chrt19:25:011
12178991614,1cyclictest0-21swapper/122:45:181
12178991614,1cyclictest0-21swapper/121:35:131
12178991614,1cyclictest0-21swapper/120:35:151
12178991614,1cyclictest0-21swapper/119:20:151
12178991614,1cyclictest0-21swapper/100:25:221
12178991613,2cyclictest15451-21tr19:15:131
1217899160,1cyclictest27441-21gpgv22:30:011
1217899160,1cyclictest27441-21gpgv22:30:011
1217899160,1cyclictest17773-21ps22:10:201
1217899160,15cyclictest5802-21dpkg23:45:001
1217899160,15cyclictest465-21df23:35:131
1217899160,15cyclictest2550-21expr21:45:151
1217899160,15cyclictest23029-21nfsd422:20:171
1217899160,15cyclictest19586-21cat22:15:141
1217899160,15cyclictest19290-21vmstat00:05:241
1217899160,15cyclictest18273-21apt-get23:10:121
1217899160,15cyclictest0-21swapper/121:55:171
1217899160,15cyclictest0-21swapper/120:25:151
1217899160,15cyclictest0-21swapper/119:30:151
12174991614,1cyclictest0-21swapper/022:50:130
1217499160,1cyclictest0-21swapper/020:05:160
12178991513,1cyclictest0-21swapper/122:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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