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2026-06-17 - 10:33
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Wed Jun 17, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25629992320,2cyclictest8882-21mailstats23:20:211
25628992316,6cyclictest0-21swapper/000:20:000
2563099213,11cyclictest24731-21ls22:55:002
2562999210,6cyclictest6561-21nfsd422:20:181
2562999210,18cyclictest0-21swapper/122:59:281
25628992113,4cyclictest0-21swapper/021:45:330
2563099200,19cyclictest843-21systemd-network22:45:212
2563099192,2cyclictest29746-21cut21:10:012
25630991914,3cyclictest0-21swapper/222:17:082
2563099190,18cyclictest12456-21sendmail_mailqu19:40:212
2563099190,15cyclictest0-21swapper/223:45:262
2562999190,18cyclictest843-21systemd-network22:39:091
2562899193,15cyclictest9-21ksoftirqd/023:40:210
2562899192,15cyclictest0-21swapper/022:10:330
2562899190,18cyclictest0-21swapper/021:44:140
2562899190,18cyclictest0-21swapper/021:44:140
25630991815,2cyclictest15699-21nfsd421:40:172
25630991815,2cyclictest15699-21nfsd421:40:162
25630991815,2cyclictest11117-21expr22:30:142
25630991814,3cyclictest32235-21tr00:05:172
25630991814,3cyclictest30466-21nvmesmart_nvme019:15:202
25630991814,3cyclictest0-21swapper/220:38:562
2563099180,2cyclictest3981-21H222:10:212
2563099180,17cyclictest4750-21nfsd400:10:182
2562999183,1cyclictest0-21swapper/121:40:391
2562999183,1cyclictest0-21swapper/121:40:381
2562999182,15cyclictest15140-21fw_packets00:30:161
2562999182,15cyclictest0-21swapper/100:24:491
25629991816,1cyclictest0-21swapper/120:46:001
2562999180,3cyclictest7785-21if_lxdbr020:30:171
2562999180,3cyclictest1351-21lxd20:38:511
2562999180,15cyclictest0-21swapper/121:02:251
2562899182,15cyclictest37782sleep023:11:330
2562899181,16cyclictest11295-21perf00:25:000
2562899180,17cyclictest3351-21lxd20:00:510
2562899180,16cyclictest24683-21python322:55:000
25630991715,1cyclictest27061-21http_loadtime19:10:152
25630991715,1cyclictest0-21swapper/223:15:132
25630991715,1cyclictest0-21swapper/222:45:012
25630991715,1cyclictest0-21swapper/221:25:232
25630991714,2cyclictest9596-21pzem_energy22:25:202
25630991714,2cyclictest32747-21latency_hist20:20:012
25630991714,2cyclictest32737-21timerwakeupswit23:05:232
25630991714,2cyclictest27669-21cpuspeed_turbos20:10:152
25630991714,2cyclictest25300-21grep23:50:192
25630991714,2cyclictest22678-21needreboot20:55:182
25630991714,2cyclictest21340-21latency_hist20:55:012
25630991714,2cyclictest2100-21ps20:20:192
25630991714,2cyclictest12345-21perf23:30:002
2563099171,15cyclictest0-21swapper/222:55:002
2563099170,2cyclictest3987-21H222:10:212
2563099170,2cyclictest2872-21systemd-logind19:31:522
2563099170,2cyclictest24297-21cut20:05:012
2563099170,2cyclictest20551-21proc_pri19:55:212
2563099170,2cyclictest14504-21snapd21:55:282
2563099170,2cyclictest14500-21snapd20:30:282
2563099170,2cyclictest14345-21nvmesmart_nvme020:40:212
2563099170,16cyclictest9685-21smartctl00:20:162
2563099170,16cyclictest7613-21expr00:15:182
2563099170,16cyclictest31525-21/usr/sbin/munin21:10:202
2563099170,16cyclictest30216-21switchtime22:05:242
2563099170,16cyclictest24289-21grep21:00:112
2563099170,16cyclictest17676-21sshd20:46:092
2563099170,16cyclictest11274-21sleep21:35:002
2563099170,16cyclictest0-21swapper/223:58:402
2563099170,15cyclictest3599-21bounce20:25:082
2563099170,15cyclictest0-21swapper/223:40:172
25629991716,1cyclictest21-21ksoftirqd/119:23:471
25629991716,0cyclictest0-21swapper/100:25:171
25629991715,1cyclictest83822chrt00:18:211
25629991715,1cyclictest48552sleep122:19:261
25629991715,1cyclictest0-21swapper/122:50:141
25629991714,2cyclictest30616-21mailstats19:15:201
25629991714,2cyclictest29797-21expr00:00:121
25629991714,2cyclictest28964-21munin-run19:15:011
25629991714,2cyclictest21971-21sed22:50:011
25629991714,2cyclictest16809-21apt-get21:45:021
25629991714,2cyclictest1526-21lxd21:36:511
25629991714,2cyclictest1515-21lxd22:08:511
25629991714,2cyclictest14205-21grep23:30:191
25629991713,3cyclictest0-21swapper/122:00:001
2562999171,2cyclictest8616-21grep19:35:151
2562999171,15cyclictest0-21swapper/122:25:231
2562999170,2cyclictest23612-21sed23:49:591
2562999170,2cyclictest1829-21systemd-journal20:25:071
2562999170,2cyclictest15000-21chrt20:41:471
2562999170,2cyclictest14504-21snapd20:50:581
2562999170,1cyclictest0-21swapper/123:55:181
2562999170,16cyclictest5083-21sort21:20:221
2562999170,16cyclictest433-21cut20:20:011
2562999170,16cyclictest3351-21lxd20:06:511
2562999170,16cyclictest30821-21tr21:10:171
2562999170,16cyclictest28693-21cut20:10:181
2562999170,16cyclictest28192-21cut21:05:191
2562999170,16cyclictest2656-21munin-run21:20:011
2562999170,16cyclictest2656-21munin-run21:20:001
2562999170,16cyclictest23172-21expr20:00:191
2562999170,16cyclictest20427-21awk19:55:191
2562999170,16cyclictest17848-21nvmesmart_nvme022:40:201
2562999170,16cyclictest17840-21fschecks_time00:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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