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2025-12-15 - 16:55
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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 Dec 15, 2025 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
700499230,5cyclictest0-21swapper/107:37:111
700599210,5cyclictest0-21swapper/207:57:122
700499213,3cyclictest3984-21H222:02:191
700599200,5cyclictest15765-21fschecks_time12:12:102
700499203,16cyclictest10984-21smtpd11:06:051
700499202,15cyclictest0-21swapper/110:43:271
700499200,17cyclictest0-21swapper/107:22:161
7003992016,3cyclictest0-21swapper/009:24:050
7005991916,2cyclictest10693-21grep12:02:152
7005991914,2cyclictest31907-21switchtime09:47:172
7004991916,2cyclictest18862-21cat09:25:001
7004991911,4cyclictest0-21swapper/110:17:151
700399192,3cyclictest0-21swapper/009:46:140
7003991915,3cyclictest0-21swapper/011:53:410
700399190,16cyclictest3983-21H222:02:190
7005991816,1cyclictest0-21swapper/207:36:032
7005991815,2cyclictest28079-21nfsd412:32:152
7005991814,3cyclictest0-21swapper/210:10:352
7005991814,2cyclictest17961-21nfsd411:17:122
700599181,2cyclictest3985-21H222:02:192
700599181,16cyclictest11829-21uname09:12:132
700599180,2cyclictest3976-21H222:02:192
700599180,17cyclictest20077-20python312:20:022
700599180,16cyclictest3976-21H222:02:192
700499188,0cyclictest0-21swapper/111:42:341
7004991816,1cyclictest0-21swapper/108:56:081
7004991815,2cyclictest11303-21processes08:12:161
7004991815,2cyclictest11303-21processes08:12:161
7004991814,3cyclictest20718-21sshd07:33:041
700499181,2cyclictest21396-21latency_hist09:30:011
700499180,16cyclictest5302-21nfsd411:52:141
700499180,16cyclictest2007-21systemd-journal11:00:591
700399182,15cyclictest0-21swapper/007:12:130
7003991815,2cyclictest7726-21cat08:07:120
700599172,14cyclictest0-21swapper/207:51:032
7005991715,1cyclictest0-21swapper/212:37:142
7005991715,1cyclictest0-21swapper/210:47:152
7005991715,1cyclictest0-21swapper/210:37:102
7005991715,1cyclictest0-21swapper/210:30:042
7005991715,1cyclictest0-21swapper/209:52:132
7005991714,2cyclictest5361-21grep09:02:092
7005991714,2cyclictest3989-21H222:02:192
7005991714,2cyclictest24861-21expr09:37:082
7005991714,2cyclictest22258-21sed08:32:172
7005991714,2cyclictest19103-21ls08:27:132
7005991713,3cyclictest2007-21systemd-journal11:59:512
700599171,1cyclictest23367-21nfsd411:27:152
700599170,2cyclictest20261-21needreboot09:27:142
700599170,2cyclictest2018-21sort11:47:152
700599170,2cyclictest15247-21update-motd-upd10:15:022
700599170,1cyclictest0-21swapper/211:45:002
700599170,1cyclictest0-21swapper/210:08:282
700599170,16cyclictest993-21dbus-daemon08:38:582
700599170,16cyclictest5596-21nvmesmart_nvme008:02:132
700599170,16cyclictest5409-21nvmesmart_nvme011:52:152
700599170,16cyclictest3985-21H222:02:192
700599170,16cyclictest3979-21H222:02:192
700599170,16cyclictest3707-21master08:17:272
700599170,16cyclictest28144-21fschecks_time09:42:102
700599170,16cyclictest24821-21smtpd11:33:212
700599170,16cyclictest20052-21threads10:22:182
700599170,16cyclictest1517-21lxd12:16:412
700599170,16cyclictest13960-21cstates09:17:092
700599170,16cyclictest11161-21ntpq08:12:152
700599170,16cyclictest11161-21ntpq08:12:152
700599170,16cyclictest0-21swapper/209:30:242
700599170,16cyclictest0-21swapper/209:05:572
700599170,15cyclictest0-21swapper/209:57:362
7004991715,1cyclictest21-21ksoftirqd/110:25:441
7004991715,1cyclictest149552chrt12:10:441
7004991714,2cyclictest6151-21if_err_enp1s009:02:111
7004991714,2cyclictest5553-21ntp_kernel_err08:02:141
7004991714,2cyclictest3989-21H222:02:191
7004991714,2cyclictest3985-21H222:02:191
7004991714,2cyclictest3979-21H222:02:191
7004991714,2cyclictest28326-21ps12:32:161
7004991714,2cyclictest21886-21grep08:32:151
7004991714,2cyclictest1617-21latency09:52:131
7004991714,2cyclictest1351-21lxd07:42:401
7004991714,2cyclictest11017-21grep10:07:161
7004991714,1cyclictest0-21swapper/110:33:421
7004991714,1cyclictest0-21swapper/108:42:161
700499171,15cyclictest0-21swapper/109:32:091
700499170,2cyclictest7285-21sed10:57:171
700499170,2cyclictest3983-21H222:02:191
700499170,2cyclictest3351-21lxd11:32:401
700499170,2cyclictest23904-21cnf-update-db12:25:011
700499170,2cyclictest16642-21ntp_kernel_pll_08:22:131
700499170,2cyclictest1515-21lxd08:16:401
700499170,16cyclictest7568-21date10:02:121
700499170,16cyclictest455-21plymouthd12:02:111
700499170,16cyclictest3707-21master09:06:281
700499170,16cyclictest31896-21tr08:52:111
700499170,16cyclictest26463-21/usr/sbin/munin10:37:091
700499170,16cyclictest19229-21/usr/sbin/munin10:22:141
700499170,16cyclictest19148-21needreboot08:27:141
700499170,16cyclictest1523-21lxd07:26:401
700499170,16cyclictest12628-21munin-plugin-st07:20:011
700499170,16cyclictest1085-21gdbus07:52:181
700499170,15cyclictest8421-21processes08:07:161
7003991715,1cyclictest9-21ksoftirqd/012:05:430
7003991715,1cyclictest9-21ksoftirqd/008:55:250
7003991715,1cyclictest3989-21H222:02:190
7003991714,2cyclictest2872-21systemd-logind08:36:500
7003991714,2cyclictest26245-21ntpq11:32:140
7003991714,2cyclictest25524-21grep12:27:150
7003991714,2cyclictest24703-21cpuspeed_turbos09:37:090
7003991714,2cyclictest19044-21tr10:22:120
7003991714,2cyclictest1218-21tr10:47:160
7003991714,2cyclictest10294-21smtpd09:11:040
700399171,15cyclictest9-21ksoftirqd/010:25:310
700399171,15cyclictest9-21ksoftirqd/007:23:050
700399171,15cyclictest123032sleep007:19:300
700399171,15cyclictest0-21swapper/011:18:090
700399171,15cyclictest0-21swapper/008:02:170
700399170,2cyclictest4099-21H222:02:190
700399170,2cyclictest3053-21systemd-logind10:38:500
700399170,2cyclictest21832-21apache_processe09:32:070
700399170,2cyclictest21337-21chrt07:35:560
700399170,2cyclictest13216-21cron11:09:010
700399170,1cyclictest4035-21H222:02:190
700399170,16cyclictest9848-21cat12:02:100
700399170,16cyclictest9594-21systemctl09:07:160
700399170,16cyclictest870-21systemd-logind12:13:500
700399170,16cyclictest7730-21munin-plugin-st09:05:010
700399170,16cyclictest4099-21H222:02:190
700399170,16cyclictest3989-21H222:02:190
700399170,16cyclictest3983-21H222:02:190
700399170,16cyclictest29888-21munin-plugin-st09:45:010
700399170,16cyclictest28077-21awk12:32:150
700399170,16cyclictest2332-21awk07:57:160
700399170,16cyclictest20592-21needreboot11:22:130
700399170,16cyclictest20321-21cut12:20:010
700399170,16cyclictest11881-21sshd08:14:060
700399170,16cyclictest11881-21sshd08:14:060
700399170,16cyclictest0-21swapper/010:10:480
700399170,14cyclictest0-21swapper/008:46:250
7005991614,1cyclictest7551-21/usr/sbin/munin10:02:122
7005991614,1cyclictest172692sleep208:23:002
7005991614,1cyclictest0-21swapper/211:22:092
7005991614,1cyclictest0-21swapper/211:07:102
7005991614,1cyclictest0-21swapper/211:01:352
7005991614,1cyclictest0-21swapper/210:42:122
7005991614,1cyclictest0-21swapper/208:42:092
7005991614,1cyclictest0-21swapper/208:06:052
7005991613,2cyclictest3983-21H222:02:192
700599160,1cyclictest0-21swapper/208:55:162
700599160,15cyclictest3989-21H222:02:192
700599160,15cyclictest25363-21nfsd412:27:132
700599160,15cyclictest13190-21cat07:22:102
700599160,15cyclictest12185-21/usr/sbin/munin12:07:082
700599160,15cyclictest0-21swapper/211:12:112
700599160,15cyclictest0-21swapper/210:52:082
700599160,15cyclictest0-21swapper/209:20:202
700599160,15cyclictest0-21swapper/208:47:132
700599160,15cyclictest0-21swapper/207:15:132
7004991614,1cyclictest4099-21H222:02:191
7004991614,1cyclictest20206-21idleruntime11:22:111
7004991614,1cyclictest0-21swapper/112:37:101
7004991614,1cyclictest0-21swapper/112:21:521
7004991614,1cyclictest0-21swapper/112:07:111
7004991614,1cyclictest0-21swapper/111:27:111
7004991614,1cyclictest0-21swapper/108:47:111
7004991614,1cyclictest0-21swapper/107:46:041
7004991614,1cyclictest0-21swapper/107:12:061
7004991613,2cyclictest1521-21lxd09:36:401
7004991613,2cyclictest1474-21expr11:47:111
700499160,1cyclictest0-21swapper/111:37:081
700499160,15cyclictest17285-21df11:17:081
700499160,15cyclictest12478-21systemctl09:12:171
700499160,15cyclictest0-21swapper/111:57:171
700499160,15cyclictest0-21swapper/111:12:101
700499160,15cyclictest0-21swapper/110:52:171
700499160,15cyclictest0-21swapper/110:47:131
700499160,15cyclictest0-21swapper/107:55:351
7003991614,1cyclictest1288-21lxd09:16:400
7003991614,1cyclictest1-21systemd10:30:410
7003991614,1cyclictest0-21swapper/012:35:020
7003991614,1cyclictest0-21swapper/011:57:160
7003991614,1cyclictest0-21swapper/011:48:400
7003991614,1cyclictest0-21swapper/011:40:120
7003991614,1cyclictest0-21swapper/011:05:010
7003991613,2cyclictest3981-21H222:02:190
7003991613,2cyclictest30053-21chrt07:50:150
7003991613,2cyclictest29394-21apache_accesses10:42:090
7003991613,2cyclictest18563-21chrt07:30:130
7003991613,2cyclictest16627-21/usr/sbin/munin10:17:140
7003991613,2cyclictest15763-21expr08:22:100
700399160,2cyclictest27762-21expr11:37:110
700399160,2cyclictest0-21swapper/008:51:540
700399160,1cyclictest0-21swapper/010:57:090
700399160,15cyclictest4500-21grep10:52:170
700399160,15cyclictest2802-21Xwayland08:40:330
700399160,15cyclictest27186-21cpuspeed_turbos07:47:090
700399160,15cyclictest16882-21if_lxdbr007:27:140
700399160,15cyclictest138692chrt11:11:090
700399160,15cyclictest0-21swapper/010:07:140
700399160,15cyclictest0-21swapper/008:32:140
700399150,15cyclictest0-21swapper/011:26:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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