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2026-03-13 - 06:38
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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 Fri Mar 13, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30194992925,3cyclictest0-21swapper/021:20:150
30195992818,10cyclictest0-21swapper/120:30:501
3019499270,18cyclictest0-21swapper/021:10:010
30195992415,0cyclictest0-21swapper/123:15:161
30195992415,0cyclictest0-21swapper/123:15:151
30195992414,5cyclictest0-21swapper/122:10:011
3019599240,24cyclictest0-21swapper/120:05:161
3019699230,22cyclictest870-21systemd-logind22:56:512
30195992114,6cyclictest0-21swapper/122:15:161
3019499210,18cyclictest0-21swapper/020:12:330
3019499210,18cyclictest0-21swapper/020:12:330
3019699202,17cyclictest0-21swapper/200:05:182
3019699200,19cyclictest426-21systemd-udevd21:36:512
3019599202,17cyclictest0-21swapper/120:30:001
30195992017,2cyclictest26366-21basename23:50:001
30195992017,0cyclictest0-21swapper/122:10:551
30195992016,3cyclictest0-21swapper/120:53:421
30195992014,3cyclictest0-21swapper/119:45:121
30196991917,1cyclictest28-21ksoftirqd/200:20:002
30196991916,2cyclictest15239-21php7.219:38:592
30196991915,3cyclictest0-21swapper/223:11:102
3019699190,18cyclictest870-21systemd-logind21:18:512
3019699190,18cyclictest426-21systemd-udevd23:36:522
3019699190,18cyclictest399-20systemd-journal00:00:012
3019699190,18cyclictest0-21swapper/223:55:172
3019699190,17cyclictest11680-21snapd23:50:092
3019599193,15cyclictest20123-21cat23:35:211
30195991917,1cyclictest0-21swapper/123:00:011
30195991916,2cyclictest19767-21acpi20:45:101
30195991916,1cyclictest0-21swapper/119:50:071
30195991911,4cyclictest0-21swapper/120:18:181
3019599190,3cyclictest0-21swapper/122:22:081
3019599190,16cyclictest0-21swapper/120:14:581
3019599190,16cyclictest0-21swapper/120:14:571
3019499193,15cyclictest26763-21apt23:50:110
30194991915,3cyclictest399-20systemd-journal00:25:010
3019699183,1cyclictest0-21swapper/219:25:182
3019699183,1cyclictest0-21swapper/219:15:192
30196991815,2cyclictest27994-21cat22:55:012
30196991815,2cyclictest18529-21dpkg21:40:022
30196991815,2cyclictest1490-21snapd00:10:292
30196991815,2cyclictest1478-21snapd21:27:392
30196991813,3cyclictest0-21swapper/200:35:132
3019699180,2cyclictest30681-21grep22:00:182
3019699180,15cyclictest0-21swapper/220:20:152
3019599182,1cyclictest0-21swapper/119:15:001
3019599182,15cyclictest268042sleep120:00:031
3019599182,15cyclictest10283-21cpuspeed_turbos23:20:141
3019599182,15cyclictest0-21swapper/123:00:211
30195991818,0cyclictest27582-21mii-tool21:55:161
30195991818,0cyclictest0-21swapper/123:50:211
30195991816,1cyclictest0-21swapper/122:30:011
30195991815,2cyclictest32183-21cat22:05:011
30195991815,2cyclictest14237-21cat21:30:211
30195991815,1cyclictest0-21swapper/119:57:041
30195991815,1cyclictest0-21swapper/100:06:591
30195991814,3cyclictest29221-21grep21:00:191
30195991814,3cyclictest0-21swapper/122:40:011
30195991814,3cyclictest0-21swapper/121:55:011
30195991814,1cyclictest0-21swapper/121:23:211
3019599181,2cyclictest16967-21cut20:40:011
3019599181,16cyclictest0-21swapper/100:10:131
30194991816,1cyclictest9-21ksoftirqd/019:45:170
30194991815,2cyclictest14760-21expr22:30:140
30194991814,3cyclictest1351-21lxd20:08:490
30194991813,1cyclictest0-21swapper/019:10:150
3019499181,16cyclictest0-21swapper/019:33:470
3019499180,17cyclictest5350-21nfsd419:20:160
3019699172,1cyclictest0-21swapper/219:10:142
30196991715,1cyclictest3981-21H222:10:212
30196991714,2cyclictest426-21systemd-udevd21:32:522
30196991714,2cyclictest3987-21H222:10:212
30196991714,2cyclictest3987-21H222:10:212
30196991714,2cyclictest3976-21H222:10:212
30196991714,2cyclictest2872-21systemd-logind20:36:522
30196991714,2cyclictest26949-21cpuspeed_turbos21:55:152
30196991714,2cyclictest22824-21processes21:45:192
30196991714,2cyclictest2069-21systemd-udevd20:40:512
30196991714,2cyclictest20105-21/usr/sbin/munin22:40:212
30196991714,2cyclictest1351-21lxd19:52:502
30196991714,2cyclictest11610-21ntpq23:20:182
30196991713,2cyclictest22526-21nfsd423:40:172
3019699171,15cyclictest28-21ksoftirqd/200:28:522
3019699170,2cyclictest7811-21hddtemp_smartct21:20:152
3019699170,2cyclictest5137-21chrt22:10:432
3019699170,2cyclictest399-20systemd-journal22:25:172
3019699170,2cyclictest29931-21chrt21:00:352
3019699170,2cyclictest2470-21cron20:15:012
3019699170,2cyclictest2470-21cron20:15:002
3019699170,16cyclictest5322-21nfsd419:20:152
3019699170,16cyclictest3979-21H222:10:212
3019699170,16cyclictest3976-21H222:10:212
3019699170,16cyclictest32190-21sed23:00:172
3019699170,16cyclictest31908-21nfsd421:05:182
3019699170,16cyclictest24668-21df19:55:142
3019699170,16cyclictest24354-21timerwakeupswit20:50:232
3019699170,16cyclictest18396-21latency_hist19:45:002
3019699170,16cyclictest1829-21systemd-journal22:45:582
3019699170,16cyclictest16573-21sshd22:32:112
3019699170,16cyclictest15126-21smtpd23:30:082
3019699170,16cyclictest11577-21cut22:25:012
3019699170,16cyclictest0-21swapper/223:05:162
3019699170,16cyclictest0-21swapper/221:52:452
30195991715,1cyclictest15351-21grep21:35:131
30195991714,2cyclictest8745-21apache_accesses00:15:111
30195991714,2cyclictest6434-21cat20:20:151
30195991714,2cyclictest5400-21missed_timers21:15:171
30195991714,2cyclictest29797-21cat23:55:141
30195991714,2cyclictest25897-21cat22:50:131
30195991714,2cyclictest25315-21grep20:55:141
30195991714,2cyclictest18760-21cat20:40:201
30195991714,2cyclictest16137-21cstates23:30:121
30195991714,2cyclictest14985-21ls00:25:171
30195991714,2cyclictest1344-21grep21:10:141
30195991714,2cyclictest12944-21gpgv19:35:031
30195991714,2cyclictest11658-21dpkg00:20:001
30195991713,3cyclictest0-21swapper/123:05:211
30195991712,1cyclictest0-21swapper/119:40:151
3019599170,2cyclictest9678-21sed19:30:021
3019599170,2cyclictest32229-21apache_accesses00:00:101
3019599170,16cyclictest7265-21ls19:25:141
3019599170,16cyclictest4729-21/usr/sbin/munin23:10:191
3019599170,16cyclictest3955-21/usr/sbin/munin19:20:131
3019599170,16cyclictest22832-21chrt22:45:111
3019599170,16cyclictest21972-21fschecks_time23:40:141
3019599170,16cyclictest21921-21/usr/sbin/munin21:45:141
3019599170,16cyclictest21836-21sed22:40:211
3019599170,16cyclictest15515-21sed22:30:161
3019599170,16cyclictest12951-21/usr/sbin/munin23:25:121
3019599170,16cyclictest1145-21cstates19:15:141
3019599170,16cyclictest10482-21cut21:25:161
3019599170,16cyclictest0-21swapper/121:05:131
30194991715,1cyclictest13767-21chrt22:26:040
30194991715,1cyclictest0-21swapper/020:55:150
30194991715,1cyclictest0-21swapper/000:30:190
30194991714,2cyclictest5054-21perl21:15:140
30194991714,2cyclictest26546-21latency_hist21:55:010
30194991714,2cyclictest25301-21nfsd419:55:190
30194991714,2cyclictest20219-21cpuspeed_turbos22:40:130
30194991714,2cyclictest1446-21pzem_energy22:05:200
30194991714,2cyclictest13729-21smartctl19:35:150
30194991714,2cyclictest12965-21grep23:25:140
30194991714,2cyclictest1077-21nfsd400:00:180
3019499171,1cyclictest177632sleep023:32:180
3019499170,3cyclictest22670-21nfsd423:40:180
3019499170,2cyclictest5544-21python322:15:010
3019499170,2cyclictest2397-21missed_timers21:10:170
3019499170,2cyclictest22723-21nvmesmart_nvme021:45:180
3019499170,2cyclictest17000-21latency_hist20:40:000
3019499170,2cyclictest16866-21systemctl21:35:200
3019499170,2cyclictest16233-21expr19:40:140
3019499170,2cyclictest1550-21snapd20:47:480
3019499170,2cyclictest15124-21expr00:25:160
3019499170,2cyclictest1085-21gdbus20:40:200
3019499170,2cyclictest10151-21lxd23:56:350
3019499170,1cyclictest0-21swapper/022:21:410
3019499170,16cyclictest8761-21sed22:20:000
3019499170,16cyclictest7319-21awk20:20:200
3019499170,16cyclictest4729-21/usr/sbin/munin23:10:190
3019499170,16cyclictest3987-21H222:10:210
3019499170,16cyclictest3983-21H222:10:210
3019499170,16cyclictest3904-21idleruntime20:15:150
3019499170,16cyclictest29261-21perf20:05:010
3019499170,16cyclictest28188-21/usr/sbin/munin21:55:200
3019499170,16cyclictest27090-21pzem_current22:50:190
3019499170,16cyclictest22639-21munin-run00:40:010
3019499170,16cyclictest13940-21ntp_states21:30:180
30196991614,1cyclictest3634-21runrttasks21:12:122
30196991614,1cyclictest0-21swapper/223:45:202
30196991614,1cyclictest0-21swapper/222:35:212
30196991613,2cyclictest6558-21expr22:15:122
3019699161,1cyclictest28-21ksoftirqd/200:20:162
3019699160,2cyclictest20451-21fschecks_time20:45:142
3019699160,2cyclictest18640-21nfsd400:30:182
3019699160,2cyclictest12946-21apache_accesses23:25:112
3019699160,15cyclictest4483-21expr20:15:182
3019699160,15cyclictest3985-21H222:10:212
3019699160,15cyclictest28367-21pzem_power20:00:212
3019699160,15cyclictest19711-21sed19:45:172
3019699160,15cyclictest0-21swapper/222:05:122
30195991614,1cyclictest18366-21dpkg21:40:011
30195991614,1cyclictest0-21swapper/100:35:181
30194991614,1cyclictest1523-21lxd22:56:350
30194991614,1cyclictest0-21swapper/023:20:160
30194991614,1cyclictest0-21swapper/023:05:180
30194991614,1cyclictest0-21swapper/022:35:120
30194991614,1cyclictest0-21swapper/021:25:190
30194991614,1cyclictest0-21swapper/020:25:160
30194991614,1cyclictest0-21swapper/019:15:140
30194991614,1cyclictest0-21swapper/000:15:130
30194991614,1cyclictest0-21swapper/000:05:130
30194991613,2cyclictest19318-21kernelversion23:35:150
3019499160,2cyclictest28549-21df_inode21:00:150
3019499160,1cyclictest0-21swapper/023:00:130
3019499160,15cyclictest30784-21awk22:00:170
3019499160,15cyclictest24242-21expr23:45:130
3019499160,15cyclictest23862-21ntp_kernel_err20:50:180
3019499160,15cyclictest22835-21find22:45:110
3019499160,15cyclictest21774-21expr19:50:130
3019499160,15cyclictest18393-21gpg-connect-age21:40:020
3019499160,15cyclictest11545-21cpuspeed_turbos20:30:140
3019499160,15cyclictest0-21swapper/023:15:140
3019499160,15cyclictest0-21swapper/023:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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