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2026-03-11 - 16:07
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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 Wed Mar 11, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
692299230,5cyclictest0-21swapper/211:15:182
692199220,11cyclictest0-21swapper/109:25:181
692299214,11cyclictest0-21swapper/208:50:182
692299214,11cyclictest0-21swapper/208:50:182
692299210,3cyclictest0-21swapper/207:39:052
692199210,3cyclictest0-21swapper/111:56:371
692199200,19cyclictest843-21systemd-network08:34:071
692199192,16cyclictest0-21swapper/112:00:121
692099192,16cyclictest24881-21cpuspeed_turbos11:30:120
6920991914,4cyclictest0-21swapper/009:33:010
6920991914,3cyclictest0-21swapper/011:57:160
692299182,2cyclictest6369-21kernelversion10:55:172
692299182,15cyclictest59752sleep211:52:012
692299182,15cyclictest501-21cat11:45:002
692299182,15cyclictest0-21swapper/209:15:402
692299182,15cyclictest0-21swapper/207:52:112
6922991815,2cyclictest18616-21cpuspeed_turbos07:30:132
6922991814,3cyclictest15998-21sshd11:13:372
6922991814,3cyclictest0-21swapper/208:09:182
692299181,2cyclictest9984-21pickup09:07:482
692299181,2cyclictest26782-21chrt11:31:352
692299181,2cyclictest2007-21systemd-journal12:02:552
692299181,16cyclictest12898-21latency10:10:162
692299180,3cyclictest1523-21lxd09:52:412
692299180,1cyclictest0-21swapper/207:12:142
692199182,15cyclictest30742-21http_loadtime09:45:161
692199181,2cyclictest3389-21nfsd408:55:181
692199181,16cyclictest29453-21cpuspeed_turbos10:40:131
692199180,3cyclictest20587-21grep10:25:131
692199180,16cyclictest6153-21sed08:05:021
692099182,15cyclictest0-21swapper/010:25:310
6920991816,1cyclictest0-21swapper/008:47:340
6920991816,1cyclictest0-21swapper/007:15:020
6920991815,2cyclictest13919-21tr11:10:130
692099181,3cyclictest0-21swapper/008:00:130
6920991813,4cyclictest0-21swapper/008:11:240
692099181,2cyclictest863-21avahi-daemon11:00:190
692099181,2cyclictest863-21avahi-daemon11:00:180
692099180,1cyclictest0-21swapper/011:35:550
692099180,17cyclictest18461-21anvil09:27:360
692299172,1cyclictest0-21swapper/212:25:012
692299172,1cyclictest0-21swapper/212:25:002
6922991715,1cyclictest0-21swapper/209:10:142
6922991715,1cyclictest0-21swapper/208:45:122
6922991715,1cyclictest0-21swapper/207:40:152
6922991714,2cyclictest26357-21cpuspeed_turbos08:40:142
6922991714,2cyclictest24471-21netstat08:35:182
6922991714,2cyclictest23407-21ntp_states11:25:192
6922991714,2cyclictest20886-21cat08:30:122
6922991714,2cyclictest20421-21processes09:25:212
6922991714,2cyclictest20065-21munin-run10:25:012
6922991714,2cyclictest19824-21chrt12:17:092
6922991714,2cyclictest19214-21grep08:25:172
6922991714,2cyclictest12304-21date08:15:022
6922991714,2cyclictest10827-21timerwakeupswit10:05:212
692299171,15cyclictest84052chrt10:03:022
692299171,15cyclictest0-21swapper/209:45:152
692299170,2cyclictest9718-21pzem11:00:192
692299170,2cyclictest9718-21pzem11:00:182
692299170,2cyclictest23470-21/usr/sbin/munin12:25:132
692299170,2cyclictest20691-21nvmesmart_nvme011:20:192
692299170,1cyclictest0-21swapper/210:35:182
692299170,16cyclictest5801-21chrt09:59:582
692299170,16cyclictest4263-21tr08:00:182
692299170,16cyclictest3658-21latency_hist11:50:002
692299170,16cyclictest32367-21tr07:55:132
692299170,16cyclictest30346-21sort12:35:202
692299170,16cyclictest28379-21uname11:35:152
692299170,16cyclictest25598-21nfsd409:35:162
692299170,16cyclictest23630-21chrt09:30:342
692299170,16cyclictest2324-21date10:50:012
692299170,16cyclictest15057-21date08:20:012
692299170,16cyclictest14441-21sed12:08:592
692299170,16cyclictest10427-21iwlist08:10:152
692299170,15cyclictest0-21swapper/210:15:122
692199172,9cyclictest14198-21perf10:15:001
6921991715,1cyclictest3756-21missed_timers10:50:151
6921991714,2cyclictest28099-21awk07:45:151
6921991714,2cyclictest17473-21cut11:15:181
6921991714,2cyclictest15265-21ls10:15:121
6921991714,2cyclictest13541-21grep09:15:151
6921991714,2cyclictest12572-21expr12:05:121
6921991714,2cyclictest11530-21timerwakeupswit08:10:221
692199171,15cyclictest261842sleep107:42:211
692199171,15cyclictest22403-21grep07:35:191
692199170,2cyclictest9245-21ntp_kernel_pll_09:05:201
692199170,2cyclictest6261-21apache_volume10:00:121
692199170,2cyclictest32347-21http_loadtime08:50:141
692199170,2cyclictest32347-21http_loadtime08:50:131
692199170,2cyclictest26889-21expr10:35:151
692199170,2cyclictest20844-21mailstats11:20:201
692199170,2cyclictest16205-21/usr/sbin/munin09:20:111
692199170,2cyclictest15849-21/usr/sbin/munin12:10:141
692199170,1cyclictest0-21swapper/112:35:161
692199170,1cyclictest0-21swapper/108:00:131
692199170,16cyclictest863-21avahi-daemon11:00:191
692199170,16cyclictest863-21avahi-daemon11:00:191
692199170,16cyclictest3256-21apache209:40:131
692199170,16cyclictest29737-21trivial-rewrite07:50:151
692199170,16cyclictest27838-21switchtime08:40:211
692199170,16cyclictest25830-21cut10:35:001
692199170,16cyclictest19927-21proc_pri07:30:191
692199170,16cyclictest12995-21expr07:20:141
692199170,16cyclictest0-21swapper/111:30:151
692199170,16cyclictest0-21swapper/109:59:201
692199170,15cyclictest0-21swapper/111:35:301
6920991715,2cyclictest7188-21threads10:55:220
6920991715,1cyclictest27535-21nfsd410:35:180
6920991714,2cyclictest28508-21nfsd409:40:180
6920991714,2cyclictest26539-21expr08:40:130
6920991714,2cyclictest24574-21wc11:30:000
6920991714,2cyclictest21819-21nfsd408:30:180
6920991714,2cyclictest1959-21needreboot11:45:170
6920991714,2cyclictest16396-21ntp_states10:15:170
6920991714,2cyclictest16245-21needreboot08:20:160
6920991714,2cyclictest1486-21snapd12:12:380
6920991714,2cyclictest0-21swapper/010:10:150
692099171,1cyclictest60122sleep011:52:330
692099171,15cyclictest3207-21JS22:10:210
692099171,15cyclictest0-21swapper/012:25:010
692099171,15cyclictest0-21swapper/012:25:010
692099170,2cyclictest6069-21apt-config08:05:010
692099170,2cyclictest3987-21H222:10:210
692099170,2cyclictest16358-21fschecks_count07:25:160
692099170,2cyclictest1551-21snapd09:00:090
692099170,2cyclictest13567-21awk08:15:180
692099170,2cyclictest1351-21lxd12:30:430
692099170,16cyclictest31860-21perf07:55:000
692099170,16cyclictest26320-21anvil07:47:310
692099170,16cyclictest25082-21latency07:40:190
692099170,16cyclictest23816-21expr08:35:130
692099170,16cyclictest21495-21expr07:35:150
692099170,16cyclictest2057-21apache_volume08:55:110
692099170,16cyclictest1550-21snapd09:10:080
692099170,16cyclictest15451-21sshd09:15:540
692099170,16cyclictest15175-21date07:25:010
692099170,16cyclictest1485-21snapd09:07:380
692099170,16cyclictest1484-21snapd10:52:390
692099170,16cyclictest13292-21tail12:05:170
692099170,16cyclictest1132-21pzem_energy10:45:200
6922991614,1cyclictest27277-21/usr/sbin/munin09:40:132
6922991614,1cyclictest0-21swapper/212:30:122
6922991614,1cyclictest0-21swapper/211:05:122
6922991614,1cyclictest0-21swapper/209:20:132
6922991614,1cyclictest0-21swapper/207:20:172
6922991614,1cyclictest0-21swapper/207:15:172
692299160,2cyclictest0-21swapper/209:00:162
692299160,15cyclictest27018-21tr07:45:122
692299160,15cyclictest21684-21nfsd410:25:162
692299160,15cyclictest15599-21df12:10:142
692299160,15cyclictest15499-21sh07:25:012
692299160,15cyclictest0-21swapper/211:55:122
692299160,15cyclictest0-21swapper/210:50:092
692299160,15cyclictest0-21swapper/210:40:172
692299160,15cyclictest0-21swapper/210:35:012
692299160,15cyclictest0-21swapper/208:55:122
6921991614,1cyclictest11278-21cat11:05:171
6921991614,1cyclictest0-21swapper/112:20:131
6921991614,1cyclictest0-21swapper/112:20:121
6921991614,1cyclictest0-21swapper/111:40:131
6921991614,1cyclictest0-21swapper/111:15:011
6921991614,1cyclictest0-21swapper/110:45:141
6921991614,1cyclictest0-21swapper/109:35:131
6921991614,1cyclictest0-21swapper/109:00:141
6921991614,1cyclictest0-21swapper/108:35:131
6921991614,1cyclictest0-21swapper/108:25:211
6921991613,2cyclictest648-21find11:45:101
6921991613,2cyclictest3987-21H222:10:211
6921991613,2cyclictest23571-21plymouth11:25:201
692199160,1cyclictest551-21http_loadtime07:55:151
692199160,1cyclictest10476-21processes10:05:201
692199160,1cyclictest0-21swapper/110:55:151
692199160,1cyclictest0-21swapper/107:15:141
692199160,15cyclictest23834-21fschecks_count12:25:141
692199160,15cyclictest22841-21strings09:30:181
692199160,15cyclictest20272-21cut10:25:011
692199160,15cyclictest18163-21expr12:15:131
692199160,15cyclictest15663-21expr08:20:141
692199160,15cyclictest11891-21needreboot09:10:181
692199160,15cyclictest0-21swapper/112:30:111
692199160,15cyclictest0-21swapper/111:50:161
692199160,15cyclictest0-21swapper/108:45:141
692199160,15cyclictest0-21swapper/108:15:131
692199160,15cyclictest0-21swapper/107:25:151
6920991614,1cyclictest30650-21tune2fs09:45:150
6920991614,1cyclictest12783-21sed11:05:240
6920991614,1cyclictest0-21swapper/012:35:130
6920991614,1cyclictest0-21swapper/012:25:120
6920991614,1cyclictest0-21swapper/011:20:140
6920991614,1cyclictest0-21swapper/010:40:120
6920991614,1cyclictest0-21swapper/010:30:060
6920991614,1cyclictest0-21swapper/010:20:110
6920991614,1cyclictest0-21swapper/010:05:140
6920991614,1cyclictest0-21swapper/009:55:010
6920991614,1cyclictest0-21swapper/007:55:150
6920991613,2cyclictest17993-21cat12:15:120
692099160,2cyclictest18136-21expr08:25:130
692099160,2cyclictest17567-21nfsd409:20:180
692099160,2cyclictest11680-21snapd11:15:090
692099160,1cyclictest0-21swapper/009:55:160
692099160,15cyclictest9960-21apt-get07:15:130
692099160,15cyclictest32236-21fschecks_count08:50:140
692099160,15cyclictest32236-21fschecks_count08:50:130
692099160,15cyclictest19559-21missed_timers07:30:160
692099160,15cyclictest0-21swapper/011:40:160
692099160,15cyclictest0-21swapper/009:35:120
692199150,1cyclictest1728-21nfsd409:50:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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