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2026-08-30 - 14:13
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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 Sun Aug 30, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12843993331,2cyclictest0-21swapper/121:20:011
1284399262,15cyclictest28526-21latency_hist23:24:591
12844992219,2cyclictest29609-21latency_hist19:40:012
1284399214,11cyclictest0-21swapper/100:32:381
1284499202,13cyclictest19541-21gpgv20:20:012
1284299204,9cyclictest22582-21python323:15:000
1284299200,18cyclictest20842-21fgrep00:05:210
1284499193,15cyclictest0-21swapper/222:30:042
1284499192,2cyclictest9929-21nfsd420:00:172
1284499192,2cyclictest3983-21H222:10:212
1284499192,16cyclictest3985-21H222:10:212
12844991917,1cyclictest28-21ksoftirqd/222:02:442
12844991915,3cyclictest0-21swapper/219:26:472
12844991914,4cyclictest23631-21nfsd400:10:152
1284499190,4cyclictest11676-21fschecks_count23:50:132
1284399199,9cyclictest870-21systemd-logind20:54:511
1284399192,2cyclictest4099-21H222:10:211
12843991917,1cyclictest0-21swapper/100:01:251
12843991916,2cyclictest0-21swapper/122:55:401
1284399191,2cyclictest3987-21H222:10:211
1284399190,2cyclictest3989-21H222:10:211
1284399190,1cyclictest0-21swapper/119:13:241
1284399190,18cyclictest870-21systemd-logind23:48:521
1284399190,16cyclictest3987-21H222:10:211
12842991917,1cyclictest0-21swapper/019:19:160
1284299191,3cyclictest0-21swapper/022:20:180
1284499182,15cyclictest28-21ksoftirqd/220:32:422
12844991816,1cyclictest0-21swapper/223:28:162
12844991814,3cyclictest455-21plymouthd23:05:172
12844991814,3cyclictest3989-21H222:10:212
1284499180,2cyclictest3987-21H222:10:212
1284499180,17cyclictest7945-21debian-sa123:45:002
1284499180,16cyclictest4099-21H222:10:212
1284499180,15cyclictest22108-21cat00:10:002
1284399182,15cyclictest21-21ksoftirqd/100:27:161
12843991816,1cyclictest21-21ksoftirqd/123:57:441
12843991815,2cyclictest4099-21H222:10:211
12843991815,2cyclictest28083-21nfsd419:35:181
12843991814,3cyclictest3985-21H222:10:211
1284399181,16cyclictest0-21swapper/122:15:321
1284399180,2cyclictest4099-21H222:10:211
1284399180,2cyclictest3976-21H222:10:211
1284399180,17cyclictest5679-21nfsd421:45:191
1284399180,17cyclictest3983-21H222:10:211
1284399180,17cyclictest30367-21turbostat21:35:001
1284399180,17cyclictest1956-21anvil20:46:041
1284299182,15cyclictest271232chrt00:17:220
1284299182,15cyclictest271232chrt00:17:210
1284299182,15cyclictest0-21swapper/000:22:550
12842991816,1cyclictest9-21ksoftirqd/000:35:070
12842991816,1cyclictest0-21swapper/020:40:290
12842991816,1cyclictest0-21swapper/019:25:400
12842991815,2cyclictest4099-21H222:10:210
12842991815,2cyclictest3987-21H222:10:210
12842991815,2cyclictest15008-21nfsd423:55:190
12842991814,3cyclictest0-21swapper/022:00:170
1284299180,3cyclictest1829-21systemd-journal19:57:310
1284299180,2cyclictest3991-21H222:10:210
1284299180,17cyclictest1079-21cups-browsed23:15:010
1284299180,16cyclictest32103-21latency_hist19:45:010
12844991715,1cyclictest0-21swapper/221:25:132
12844991714,2cyclictest8785-21cat23:45:152
12844991714,2cyclictest649-21expr19:45:152
12844991714,2cyclictest5281-21chrt22:41:372
12844991714,2cyclictest3985-21H222:10:212
12844991714,2cyclictest31807-21latency21:35:182
12844991714,2cyclictest16984-21cat20:15:002
12844991714,1cyclictest0-21swapper/221:15:132
1284499171,2cyclictest29610-21mailstats21:30:212
1284499171,15cyclictest0-21swapper/219:20:152
1284499170,2cyclictest3989-21H222:10:212
1284499170,2cyclictest3985-21H222:10:212
1284499170,2cyclictest3983-21H222:10:212
1284499170,2cyclictest2803-21ntp_offset21:40:202
1284499170,2cyclictest2803-21ntp_offset21:40:192
1284499170,2cyclictest17962-21cron19:17:002
1284499170,2cyclictest14831-21ls21:05:182
1284499170,2cyclictest1351-21lxd19:32:512
1284499170,16cyclictest993-21dbus-daemon20:51:192
1284499170,16cyclictest9462-21munin-run21:55:002
1284499170,16cyclictest8694-21apache_accesses22:50:112
1284499170,16cyclictest5431-21cat20:50:002
1284499170,16cyclictest4099-21H222:10:212
1284499170,16cyclictest3985-21H222:10:212
1284499170,16cyclictest3979-21H222:10:212
1284499170,16cyclictest32083-21mailstats00:25:212
1284499170,16cyclictest30415-21sendmail_mailtr20:35:192
1284499170,16cyclictest27354-21perf00:20:002
1284499170,16cyclictest27354-21perf00:20:002
1284499170,16cyclictest2594-21cpuspeed_turbos23:35:122
1284499170,16cyclictest21425-21needreboot20:20:172
1284499170,16cyclictest19660-21ntp_states22:10:192
1284499170,16cyclictest1923-21sed00:30:172
1284499170,16cyclictest18307-21apache219:10:122
1284499170,16cyclictest17730-21fschecks_count21:10:152
1284499170,16cyclictest12980-21pzem_energy20:05:212
1284499170,15cyclictest3991-21H222:10:212
1284399172,14cyclictest0-21swapper/120:31:411
12843991714,2cyclictest7280-21grep22:45:191
12843991714,2cyclictest3985-21H222:10:211
12843991714,2cyclictest31403-21python320:40:011
12843991714,2cyclictest2872-21systemd-logind19:54:521
12843991714,2cyclictest2273-21mii-tool21:40:171
12843991714,2cyclictest2273-21mii-tool21:40:161
12843991714,2cyclictest19885-21swap22:10:201
12843991713,2cyclictest25613-21proc_pri19:30:211
12843991713,2cyclictest18627-21nfsd423:05:171
1284399171,15cyclictest0-21swapper/120:20:131
1284399170,2cyclictest4099-21H222:10:211
1284399170,2cyclictest3989-21H222:10:211
1284399170,2cyclictest32109-21munin-plugin-st19:45:001
1284399170,2cyclictest30327-21cat23:25:181
1284399170,2cyclictest22748-21ntp_kernel_pll_19:25:181
1284399170,2cyclictest1856-21systemd-udevd21:28:511
1284399170,17cyclictest0-21swapper/120:10:121
1284399170,16cyclictest8415-21awk21:50:181
1284399170,16cyclictest7016-21smartctl23:40:181
1284399170,16cyclictest3991-21H222:10:211
1284399170,16cyclictest3987-21H222:10:211
1284399170,16cyclictest3076-21iscsid19:55:131
1284399170,16cyclictest27334-21munin-run00:20:001
1284399170,16cyclictest27334-21munin-run00:19:591
1284399170,16cyclictest25280-21apt-get20:30:011
1284399170,16cyclictest22588-21http23:15:001
1284399170,16cyclictest19813-21apt-config20:20:001
1284399170,16cyclictest16035-21chrt23:00:181
1284399170,16cyclictest15892-21snapd20:40:281
1284399170,16cyclictest15045-21nfsd421:05:191
1284399170,16cyclictest12870-21cut20:05:201
1284399170,15cyclictest3985-21H222:10:211
1284299172,1cyclictest0-21swapper/020:11:380
12842991716,1cyclictest1100-21snmpd19:34:460
12842991715,1cyclictest26076-21/usr/sbin/munin23:20:140
12842991714,2cyclictest4099-21H222:10:210
12842991714,2cyclictest4099-21H222:10:210
12842991714,2cyclictest3991-21H222:10:210
12842991714,2cyclictest3989-21H222:10:210
12842991714,2cyclictest3983-21H222:10:210
12842991714,2cyclictest28004-21lxd21:34:500
12842991714,2cyclictest27254-21grep20:30:180
12842991714,2cyclictest27145-21ls19:35:130
12842991714,2cyclictest26616-21tlsmgr23:43:040
12842991714,2cyclictest23143-21grep20:25:140
12842991714,2cyclictest20046-21cpuspeed_turbos21:15:130
12842991714,2cyclictest17709-21df_inode21:10:150
12842991714,2cyclictest11100-21grep21:00:140
12842991714,2cyclictest0-21swapper/000:14:160
1284299171,2cyclictest27470-21chrt21:27:590
1284299171,1cyclictest9869-21sendmail_mailqu23:45:200
1284299171,15cyclictest31162-21php7.020:39:010
1284299171,15cyclictest30069-21if_lxdbr022:30:160
1284299170,3cyclictest32538-21cut22:35:130
1284299170,2cyclictest849-21apt21:40:000
1284299170,2cyclictest4099-21H222:10:210
1284299170,2cyclictest4035-21H222:10:210
1284299170,2cyclictest3989-21H222:10:210
1284299170,2cyclictest3985-21H222:10:210
1284299170,2cyclictest3985-21H222:10:210
1284299170,2cyclictest3983-21H222:10:210
1284299170,2cyclictest12945-21processes20:05:200
1284299170,2cyclictest11083-21date22:55:000
1284299170,16cyclictest9834-21sed20:00:160
1284299170,16cyclictest8471-21awk21:50:180
1284299170,16cyclictest3991-21H222:10:210
1284299170,16cyclictest31231-21awk00:25:160
1284299170,16cyclictest24068-21grep21:20:200
1284299170,16cyclictest21922-21switchtime20:20:200
1284299170,16cyclictest1737-21anvil22:41:140
1284299170,16cyclictest17329-21cstates20:15:140
1284299170,16cyclictest15497-21perf19:15:010
1284299170,16cyclictest15195-21fschecks_count23:00:130
1284299170,16cyclictest12792-21sed22:55:170
12844991616,0cyclictest0-21swapper/222:35:512
12844991614,1cyclictest0-21swapper/223:15:162
12844991614,1cyclictest0-21swapper/223:00:162
12844991614,1cyclictest0-21swapper/222:55:142
12844991614,1cyclictest0-21swapper/220:40:012
12844991614,1cyclictest0-21swapper/219:50:142
12844991614,1cyclictest0-21swapper/219:40:142
12844991613,2cyclictest14495-21snapd21:20:052
1284499160,2cyclictest23333-21expr20:25:142
1284499160,1cyclictest8543-21expr20:55:122
1284499160,1cyclictest0-21swapper/222:20:162
1284499160,15cyclictest5952-21acpi19:55:102
12843991614,1cyclictest0-21swapper/121:00:181
12843991614,1cyclictest0-21swapper/119:45:141
12843991614,1cyclictest0-21swapper/119:15:201
12843991613,2cyclictest31916-21apt22:35:121
1284399160,1cyclictest0-21swapper/119:20:161
1284399160,15cyclictest4507-21expr00:35:141
1284399160,15cyclictest17831-21hddtemp_smartct21:10:161
1284399160,15cyclictest0-21swapper/121:20:121
1284399160,15cyclictest0-21swapper/120:55:191
1284399160,15cyclictest0-21swapper/120:00:191
1284399160,15cyclictest0-21swapper/100:05:121
12842991614,1cyclictest0-21swapper/019:45:130
1284299160,15cyclictest9887-21apt-get21:55:130
1284299160,15cyclictest455-21plymouthd20:45:130
1284299160,15cyclictest0-21swapper/022:15:140
1284299160,15cyclictest0-21swapper/021:08:590
1284299160,15cyclictest0-21swapper/020:50:140
1284299160,15cyclictest0-21swapper/019:20:160
1284299160,15cyclictest0-21swapper/000:30:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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