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2026-01-01 - 16:54
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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 Thu Jan 01, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9894993120,10cyclictest0-21swapper/209:15:142
989099230,5cyclictest0-21swapper/112:02:171
988499230,22cyclictest0-21swapper/010:26:300
989499213,11cyclictest13699-21apt-get09:10:022
989499204,15cyclictest3414-21master09:37:062
989499203,16cyclictest24633-21missed_timers08:30:202
9894992016,3cyclictest0-21swapper/208:28:352
989499200,17cyclictest0-21swapper/212:05:142
989099202,3cyclictest0-21swapper/108:30:231
9890992016,3cyclictest0-21swapper/109:59:481
989099200,19cyclictest843-21systemd-network08:12:361
988499202,3cyclictest0-21swapper/012:00:400
9884992015,3cyclictest0-21swapper/007:19:210
9884992015,3cyclictest0-21swapper/007:19:210
989499193,15cyclictest0-21swapper/210:00:192
989099192,16cyclictest30075-21systemctl11:30:211
989099192,16cyclictest0-21swapper/107:19:221
989099192,16cyclictest0-21swapper/107:19:221
989099190,3cyclictest0-21swapper/110:25:141
988499193,1cyclictest14663-21timerwakeupswit10:05:220
988499192,16cyclictest21314-21cpuspeed_turbos10:20:160
9884991911,3cyclictest0-21swapper/010:10:450
989499182,15cyclictest324472sleep207:47:382
9894991815,2cyclictest31950irq/134-nvme0q309:05:002
9894991814,3cyclictest0-21swapper/210:22:312
9894991813,3cyclictest8193-21latency_hist09:00:002
989499180,2cyclictest20546-21munin-plugin-st08:25:002
989499180,17cyclictest17556-21nvmesmart_nvme007:20:202
989499180,17cyclictest1477-21snapd11:32:182
989499180,17cyclictest0-21swapper/210:45:232
989499180,17cyclictest0-21swapper/207:57:512
989099182,1cyclictest167262sleep111:06:311
9890991815,2cyclictest3992-21H222:10:211
9890991814,3cyclictest0-21swapper/110:10:011
989099181,2cyclictest26511-21missed_timers09:30:201
989099180,1cyclictest0-21swapper/108:50:191
989099180,17cyclictest5925-21grep11:45:141
989099180,17cyclictest2376-21expr11:40:151
9884991816,1cyclictest0-21swapper/011:30:180
988499180,3cyclictest17307-21sshd08:16:140
988499180,16cyclictest399-20systemd-journal10:05:010
9894991715,1cyclictest0-21swapper/210:35:182
9894991714,2cyclictest8971-21python308:05:012
9894991714,2cyclictest32224-21latency11:35:182
9894991714,2cyclictest32224-21latency11:35:182
9894991714,2cyclictest31387-21expr09:40:132
9894991714,2cyclictest29541-21ls08:40:132
9894991714,2cyclictest19630-21expr10:15:182
9894991714,2cyclictest1484-21snapd07:32:172
989499170,3cyclictest0-21swapper/211:14:212
989499170,2cyclictest6863-21cron09:59:552
989499170,2cyclictest399-20systemd-journal08:17:002
989499170,2cyclictest3766-21nfsd408:50:192
989499170,2cyclictest25947-21cat09:30:152
989499170,2cyclictest19863-21fschecks_time07:25:152
989499170,2cyclictest16680-21postgres09:13:132
989499170,2cyclictest13604-21tr07:15:132
989499170,2cyclictest13604-21tr07:15:132
989499170,2cyclictest1151-21cat10:40:192
989499170,16cyclictest7485-21cut08:00:162
989499170,16cyclictest7071-21expr10:50:152
989499170,16cyclictest32751-21/usr/sbin/munin12:35:162
989499170,16cyclictest29015-21cat10:35:002
989499170,16cyclictest28534-21nfsd412:25:182
989499170,16cyclictest25823-21cut12:20:192
989499170,16cyclictest25627-21latency_hist11:25:012
989499170,16cyclictest24966-21cat07:35:142
989499170,16cyclictest2185-21smartctl07:50:202
989499170,16cyclictest1894-21munin-run08:50:022
989499170,16cyclictest1550-21snapd07:40:092
989499170,16cyclictest1550-21snapd07:40:092
989499170,16cyclictest1525-21lxd09:52:412
989499170,16cyclictest1525-21lxd09:52:412
989499170,16cyclictest15057-21expr11:05:142
989499170,16cyclictest11570-21awk11:00:002
989499170,16cyclictest1079-21cups-browsed08:10:222
989499170,16cyclictest10174-21/usr/sbin/munin07:10:232
989099172,1cyclictest0-21swapper/108:40:131
9890991715,1cyclictest0-21swapper/111:25:171
9890991714,2cyclictest9862-21grep09:00:191
9890991714,2cyclictest455-21plymouthd08:35:241
9890991714,2cyclictest3142-21/usr/sbin/munin10:45:131
9890991714,2cyclictest17593-21expr09:15:111
9890991714,1cyclictest0-21swapper/110:00:241
989099171,15cyclictest31054-21nfsd410:35:171
989099171,15cyclictest29463-21nfsd409:35:181
989099170,2cyclictest6971-21nfsd408:55:181
989099170,2cyclictest3945-21VM22:10:211
989099170,2cyclictest32386-21unattended-upgr07:46:541
989099170,2cyclictest28760-21cut07:40:171
989099170,2cyclictest28760-21cut07:40:171
989099170,2cyclictest2370-21timerwakeupswit12:35:231
989099170,2cyclictest22527-21grep12:15:141
989099170,2cyclictest20634-21cut09:20:141
989099170,1cyclictest0-21swapper/109:54:441
989099170,1cyclictest0-21swapper/109:54:431
989099170,16cyclictest8711-21tune2fs11:50:171
989099170,16cyclictest863-21avahi-daemon07:55:201
989099170,16cyclictest843-21systemd-network08:15:111
989099170,16cyclictest8155-21sendmail_mailtr08:00:211
989099170,16cyclictest3991-21H222:10:211
989099170,16cyclictest3989-21H222:10:211
989099170,16cyclictest308-21cpuspeed_turbos10:40:141
989099170,16cyclictest2750-21grep09:45:171
989099170,16cyclictest21061-21expr08:25:141
989099170,16cyclictest19586-21expr07:25:151
989099170,16cyclictest17235-21mailstats10:10:211
989099170,16cyclictest1521-21lxd10:54:411
989099170,16cyclictest1202-21expr07:50:131
989099170,16cyclictest11856-21taskset08:08:101
989099170,16cyclictest10406-21cpuspeed_turbos07:10:141
9884991715,1cyclictest297332chrt07:43:360
9884991715,1cyclictest297332chrt07:43:360
9884991715,1cyclictest0-21swapper/008:05:010
9884991714,2cyclictest863-21avahi-daemon11:45:010
9884991714,2cyclictest5535-21switchtime07:55:190
9884991714,2cyclictest4482-21sed08:50:230
9884991714,2cyclictest3991-21H222:10:210
9884991714,2cyclictest3983-21H222:10:210
9884991714,2cyclictest3739-21expr10:45:150
9884991714,2cyclictest32077-21cpuspeed_turbos08:45:120
9884991714,2cyclictest27647-21timerwakeupswit11:25:230
9884991714,2cyclictest21894-21timerwakeupswit09:20:220
9884991714,2cyclictest14334-21test09:10:010
9884991714,2cyclictest1351-21lxd12:30:420
9884991714,2cyclictest12637-21grep08:10:130
9884991714,2cyclictest10528-21chrt09:01:200
988499171,15cyclictest19394-21latency10:15:170
988499171,15cyclictest0-21swapper/009:00:010
988499170,2cyclictest8681-21anvil10:53:280
988499170,2cyclictest5815-21nfsd409:50:200
988499170,2cyclictest5815-21nfsd409:50:190
988499170,2cyclictest3450-21gsd-color09:30:220
988499170,2cyclictest31546-21latency_hist08:45:020
988499170,2cyclictest30912-21nfsd410:35:170
988499170,2cyclictest24152-21fschecks_count08:30:160
988499170,2cyclictest1701-21kernelversion07:50:160
988499170,2cyclictest16978-21cron11:09:000
988499170,2cyclictest11974-21apache_accesses11:00:120
988499170,1cyclictest0-21swapper/009:59:480
988499170,16cyclictest3182-21grep09:45:200
988499170,16cyclictest25852-21awk07:35:190
988499170,16cyclictest24462-21ntp_states11:20:200
988499170,16cyclictest22822-21sed12:15:160
988499170,16cyclictest14187-21sed09:10:010
988499170,16cyclictest11982-21nfsd411:55:180
988499170,16cyclictest10659-21sed11:55:000
9894991614,1cyclictest1375-21munin-node11:25:502
9894991614,1cyclictest0-21swapper/212:30:142
9894991614,1cyclictest0-21swapper/212:10:242
9894991614,1cyclictest0-21swapper/211:15:062
9894991613,2cyclictest12658-21fschecks_time11:00:162
989499160,2cyclictest3422-21awk11:40:222
989499160,2cyclictest26550-21expr08:35:152
989499160,2cyclictest15854-21cpuspeed_turbos10:10:122
989499160,2cyclictest13573-21ls12:00:152
989499160,15cyclictest5086-21dpkg11:45:012
989499160,15cyclictest2469-21latency09:45:162
989499160,15cyclictest24167-21cat10:25:142
989499160,15cyclictest10938-21grep11:55:132
989499160,15cyclictest0-21swapper/211:50:112
989499160,15cyclictest0-21swapper/210:05:122
989499160,15cyclictest0-21swapper/209:25:172
989499160,15cyclictest0-21swapper/209:20:132
9890991616,0cyclictest0-21swapper/112:20:161
9890991614,1cyclictest0-21swapper/112:10:151
9890991614,1cyclictest0-21swapper/111:10:141
9890991614,1cyclictest0-21swapper/111:00:121
9890991614,1cyclictest0-21swapper/110:30:121
9890991614,1cyclictest0-21swapper/108:45:121
9890991614,1cyclictest0-21swapper/107:35:141
9890991614,1cyclictest0-21swapper/107:20:171
9890991613,2cyclictest21315-21cpuspeed_turbos10:20:161
9890991613,2cyclictest1490-21snapd11:20:081
989099160,1cyclictest0-21swapper/111:15:111
989099160,1cyclictest0-21swapper/110:15:131
989099160,15cyclictest20436-21cat08:25:001
989099160,15cyclictest11892-21fschecks_time09:05:141
989099160,15cyclictest0-21swapper/112:30:151
989099160,15cyclictest0-21swapper/112:25:141
989099160,15cyclictest0-21swapper/111:35:201
989099160,15cyclictest0-21swapper/111:35:191
989099160,15cyclictest0-21swapper/109:25:221
989099160,15cyclictest0-21swapper/109:10:181
9884991614,1cyclictest25689-21missed_timers12:20:170
9884991614,1cyclictest11590-21ntpq07:10:190
9884991614,1cyclictest0-21swapper/012:38:590
9884991614,1cyclictest0-21swapper/011:15:220
9884991614,1cyclictest0-21swapper/011:10:130
9884991614,1cyclictest0-21swapper/010:40:200
9884991614,1cyclictest0-21swapper/008:20:130
9884991613,2cyclictest31564-21nfsd407:45:180
988499160,1cyclictest0-21swapper/012:25:130
988499160,1cyclictest0-21swapper/011:40:190
988499160,1cyclictest0-21swapper/010:30:150
988499160,1cyclictest0-21swapper/007:25:170
988499160,15cyclictest9557-21cat10:55:130
988499160,15cyclictest23462-21/usr/sbin/munin07:30:250
988499160,15cyclictest21261-21ls08:25:140
988499160,15cyclictest16457-21ls07:20:130
988499160,15cyclictest16294-21ls12:05:130
988499160,15cyclictest0-21swapper/011:35:010
988499160,15cyclictest0-21swapper/011:35:000
988499160,15cyclictest0-21swapper/009:40:180
988499160,15cyclictest0-21swapper/009:25:180
988499160,15cyclictest0-21swapper/008:35:140
9894991513,1cyclictest0-21swapper/212:15:162
9890991512,2cyclictest9196-21seq10:55:011
9884991512,2cyclictest17370-21tr09:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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