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2026-07-09 - 08:39
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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 Thu Jul 09, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3091999233,1cyclictest0-21swapper/022:25:170
3091999232,15cyclictest192572chrt00:31:010
30919992316,2cyclictest21338-21nfsd420:45:180
3091999230,17cyclictest0-21swapper/022:59:270
3091999230,17cyclictest0-21swapper/022:59:270
3091999230,16cyclictest3317-21apache_volume22:10:120
3092899225,16cyclictest4035-21H222:10:212
3092399220,21cyclictest31613-21fschecks_count23:00:141
30919992213,0cyclictest0-21swapper/021:05:140
3091999221,1cyclictest0-21swapper/000:09:430
3091999221,16cyclictest29274-21seq20:02:470
3091999220,3cyclictest12466-21cron21:30:010
3091999220,16cyclictest16714-21chrt22:34:400
3091999220,15cyclictest0-21swapper/019:20:210
3092399210,20cyclictest843-21systemd-network22:19:251
3091999213,11cyclictest2238-21python300:05:000
30919992114,2cyclictest4642-21munin-plugin-st19:20:020
30919992111,5cyclictest0-21swapper/021:50:010
3091999211,14cyclictest0-21swapper/023:21:090
3091999210,3cyclictest3985-21H222:10:210
3091999210,2cyclictest24592-21/usr/sbin/munin20:50:210
3091999210,2cyclictest18307-21apache_volume23:35:110
3091999210,20cyclictest843-21systemd-network21:55:140
3091999210,1cyclictest0-21swapper/023:00:210
3091999210,16cyclictest3991-21H222:10:210
3091999210,15cyclictest21544-21expr19:50:130
3091999210,15cyclictest17830-21expr20:40:120
3091999210,15cyclictest0-21swapper/023:55:030
3091999210,15cyclictest0-21swapper/023:45:200
3092899200,5cyclictest399-20systemd-journal22:55:002
30923992016,3cyclictest0-21swapper/119:57:071
30923992016,3cyclictest0-21swapper/119:57:071
30919992014,2cyclictest3987-21H222:10:210
30919992014,2cyclictest14927-21chrt23:27:020
30919992014,1cyclictest12706-21uname00:20:160
30919992013,2cyclictest19001-21timerwakeupswit22:35:210
3091999201,1cyclictest0-21swapper/022:49:070
3091999201,15cyclictest3981-21H222:10:210
3091999200,2cyclictest6679-21expr22:15:120
3091999200,2cyclictest3979-21H222:10:210
3091999200,2cyclictest3979-21H222:10:210
3091999200,16cyclictest3991-21H222:10:210
3091999200,16cyclictest3991-21H222:10:210
3091999200,15cyclictest234602chrt23:44:240
3091999200,15cyclictest0-21swapper/022:41:230
3092899193,15cyclictest28-21ksoftirqd/220:55:132
30928991917,1cyclictest0-21swapper/220:02:452
3092899190,2cyclictest4035-21H222:10:212
3092899190,2cyclictest3991-21H222:10:212
3092899190,16cyclictest4035-21H222:10:212
3092899190,16cyclictest3991-21H222:10:212
3092399193,15cyclictest21-21ksoftirqd/121:17:321
30923991916,2cyclictest3058-21rs:main1
30923991916,2cyclictest30511-21sendmail-mta22:59:351
30923991916,2cyclictest30511-21sendmail-mta22:59:351
3092399190,16cyclictest3989-21H222:10:211
3092399190,16cyclictest3976-21H222:10:211
3091999192,16cyclictest14504-21snapd00:10:270
30919991917,1cyclictest9-21ksoftirqd/000:39:190
30919991916,2cyclictest3987-21H222:10:210
3091999190,2cyclictest3981-21H222:10:210
3091999190,2cyclictest3981-21H222:10:210
3091999190,16cyclictest3979-21H222:10:210
3091999190,15cyclictest4035-21H222:10:210
30928991816,1cyclictest30779-21ntp_offset23:55:172
30928991816,1cyclictest28-21ksoftirqd/200:03:502
30928991815,2cyclictest3954-21VM22:10:212
30928991815,2cyclictest3954-21VM22:10:212
30928991815,2cyclictest14958-21seq23:27:262
30928991814,3cyclictest3983-21H222:10:212
30928991814,3cyclictest3976-21H222:10:212
30928991813,4cyclictest426-21systemd-udevd19:30:522
30928991813,4cyclictest426-21systemd-udevd19:30:522
30928991813,2cyclictest3989-21H222:10:212
3092899180,2cyclictest4035-21H222:10:212
3092899180,2cyclictest3987-21H222:10:212
3092899180,2cyclictest3987-21H222:10:212
3092899180,2cyclictest3987-21H222:10:212
3092899180,2cyclictest3987-21H222:10:212
3092899180,2cyclictest3983-21H222:10:212
3092899180,2cyclictest3983-21H222:10:212
3092899180,2cyclictest3979-21H222:10:212
3092899180,17cyclictest3983-21H222:10:212
3092899180,17cyclictest3981-21H222:10:212
3092899180,17cyclictest3351-21lxd20:36:492
3092899180,17cyclictest0-21swapper/219:16:492
3092899180,16cyclictest4099-21H222:10:212
3092899180,16cyclictest4035-21H222:10:212
3092899180,16cyclictest3979-21H222:10:212
3092899180,15cyclictest4035-21H222:10:212
3092399182,15cyclictest3244-21processes21:10:191
3092399182,15cyclictest177582sleep123:33:281
30923991816,1cyclictest4035-21H222:10:211
30923991816,1cyclictest4027-21changes_closed20:00:521
30923991816,1cyclictest21-21ksoftirqd/121:36:451
30923991816,1cyclictest0-21swapper/100:06:261
30923991815,2cyclictest13256-21proc_pri00:20:211
3092399181,2cyclictest24020-21nfsd422:45:161
3092399181,2cyclictest0-21swapper/100:30:131
3092399181,16cyclictest29998-21tr22:00:141
3092399180,2cyclictest3991-21H222:10:211
3092399180,2cyclictest3989-21H222:10:211
3092399180,2cyclictest3983-21H222:10:211
3092399180,2cyclictest3981-21H222:10:211
3092399180,17cyclictest32372-21cpuspeed_turbos00:00:131
3092399180,15cyclictest3983-21H222:10:211
30919991814,3cyclictest3991-21H222:10:210
30919991813,2cyclictest3976-21H222:10:210
3091999180,2cyclictest3976-21H222:10:210
3091999180,17cyclictest8716-21nfsd423:15:180
3091999180,17cyclictest3985-21H222:10:210
3091999180,15cyclictest3979-21H222:10:210
30928991714,2cyclictest9079-21cpu20:25:132
30928991714,2cyclictest4035-21H222:10:212
30928991714,2cyclictest3991-21H222:10:212
30928991714,2cyclictest3991-21H222:10:212
30928991714,2cyclictest3991-21H222:10:212
30928991714,2cyclictest3985-21H222:10:212
30928991714,2cyclictest3979-21H222:10:212
30928991714,2cyclictest3979-21H222:10:212
30928991714,2cyclictest28-21ksoftirqd/222:10:172
30928991714,2cyclictest20305-21cpuspeed_turbos20:45:142
30928991714,2cyclictest18308-21apache_volume23:35:112
30928991714,2cyclictest13104-21cpuspeed_turbos21:30:142
30928991714,2cyclictest11969-21cpuspeed_turbos00:20:132
3092899170,2cyclictest399-20systemd-journal00:18:282
3092899170,2cyclictest3981-21H222:10:212
3092899170,2cyclictest3981-21H222:10:212
3092899170,2cyclictest3088-21sendmail_mailqu23:05:202
3092899170,2cyclictest29882-21sendmail_mailst21:00:212
3092899170,2cyclictest1856-21systemd-udevd20:22:522
3092899170,16cyclictest4099-21H222:10:212
3092899170,16cyclictest4099-21H222:10:212
3092899170,16cyclictest4035-21H222:10:212
3092899170,16cyclictest3989-21H222:10:212
3092899170,16cyclictest3989-21H222:10:212
3092899170,16cyclictest3983-21H222:10:212
3092899170,16cyclictest3981-21H222:10:212
3092899170,16cyclictest3981-21H222:10:212
3092899170,16cyclictest3976-21H222:10:212
3092899170,16cyclictest23341-21chrt21:47:012
3092899170,16cyclictest2153-21cstates21:10:132
3092899170,16cyclictest14505-21snapd00:30:272
30923991715,1cyclictest23222-21chrt23:41:131
30923991714,2cyclictest9771-21perf19:30:011
30923991714,2cyclictest4748-21nfsd422:10:181
30923991714,2cyclictest3987-21H222:10:211
30923991714,2cyclictest3983-21H222:10:211
30923991714,2cyclictest3976-21H222:10:211
30923991714,2cyclictest3040-21pzem_current23:05:201
30923991714,2cyclictest25383-21ntp_offset21:50:191
30923991714,2cyclictest20653-21df22:40:141
30923991714,2cyclictest18670-21grep20:40:161
30923991714,2cyclictest12972-21nfsd420:30:191
30923991713,3cyclictest3985-21H222:10:211
3092399171,15cyclictest4035-21H222:10:211
3092399170,2cyclictest4640-21apache_processe23:10:101
3092399170,2cyclictest4099-21H222:10:211
3092399170,2cyclictest4035-21H222:10:211
3092399170,2cyclictest3991-21H222:10:211
3092399170,2cyclictest3991-21H222:10:211
3092399170,2cyclictest3976-21H222:10:211
3092399170,2cyclictest29116-21python322:00:001
3092399170,1cyclictest4035-21H222:10:211
3092399170,1cyclictest3989-21H222:10:211
3092399170,16cyclictest922-21http_loadtime22:05:151
3092399170,16cyclictest7344-21/usr/sbin/munin23:15:191
3092399170,16cyclictest4099-21H222:10:211
3092399170,16cyclictest3987-21H222:10:211
3092399170,16cyclictest3987-21H222:10:211
3092399170,16cyclictest3987-21H222:10:211
3092399170,16cyclictest3976-21H222:10:211
3092399170,16cyclictest3976-21H222:10:211
3092399170,16cyclictest14500-21snapd23:50:271
3092399170,16cyclictest11076-21irqstats21:25:151
3092399170,16cyclictest0-21swapper/100:35:331
3091999172,1cyclictest0-21swapper/022:06:090
3091999172,1cyclictest0-21swapper/020:15:080
30919991714,2cyclictest16107-21ls21:35:120
30919991714,2cyclictest15697-21cut23:30:130
30919991713,3cyclictest3979-21H222:10:210
3091999170,2cyclictest4099-21H222:10:210
3091999170,2cyclictest3979-21H222:10:210
3091999170,2cyclictest18909-21expr19:45:120
3091999170,16cyclictest4035-21H222:10:210
3091999170,16cyclictest3989-21H222:10:210
3091999170,16cyclictest27094-21pzem_current20:55:200
3091999170,16cyclictest2057-21fschecks_count23:05:140
3091999170,16cyclictest14350-21ps21:30:200
3091999170,15cyclictest3987-21H222:10:210
30928991614,1cyclictest0-21swapper/221:55:192
3092899160,1cyclictest0-21swapper/220:10:112
3092899160,15cyclictest0-21swapper/223:45:132
30923991614,1cyclictest0-21swapper/121:20:211
30923991614,1cyclictest0-21swapper/120:20:161
30923991613,2cyclictest3385-21systemctl19:15:211
3092399161,1cyclictest11390-21nfsd419:30:191
3092399161,1cyclictest11390-21nfsd419:30:191
3092399160,2cyclictest6307-21apache_processe00:10:101
3092399160,1cyclictest17184-21seq22:35:121
3092399160,1cyclictest0-21swapper/123:55:121
3092399160,15cyclictest0-21swapper/120:50:141
3091999160,15cyclictest672-21timerwakeupswit19:10:230
3091999160,15cyclictest3979-21H222:10:210
3091999160,15cyclictest0-21swapper/019:25:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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