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2026-07-11 - 12:40
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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 Sat Jul 11, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13071992613,12cyclictest0-21swapper/020:45:160
13080992424,0cyclictest0-21swapper/220:55:162
13080992424,0cyclictest0-21swapper/220:55:162
1307599240,19cyclictest0-21swapper/121:45:171
1308099230,5cyclictest0-21swapper/219:37:342
1308099230,22cyclictest0-21swapper/223:56:362
1308099210,20cyclictest843-21systemd-network22:47:552
1307599216,13cyclictest0-21swapper/123:25:191
1307199210,20cyclictest843-21systemd-network00:04:070
13080992017,2cyclictest25810-21grep00:15:142
1307199204,9cyclictest0-21swapper/021:05:180
1307199202,17cyclictest0-21swapper/021:30:010
13080991917,1cyclictest0-21swapper/220:30:452
13080991917,1cyclictest0-21swapper/220:30:442
1308099190,18cyclictest19176-21tr00:05:142
1307599193,15cyclictest21792-21expr19:25:141
1307599192,2cyclictest5428-21cut00:35:181
1307599192,16cyclictest14550-21snapd20:37:571
13075991916,2cyclictest26931-21gpgv20:30:011
13075991916,2cyclictest26931-21gpgv20:30:011
1307599191,17cyclictest13880-21proc_pri20:05:211
1307599190,1cyclictest0-21swapper/121:52:531
1307599190,17cyclictest19327-21nfsd420:15:171
1307199193,1cyclictest0-21swapper/020:26:510
1307199192,2cyclictest30431-21grep20:35:150
1307199192,2cyclictest14605-21cat22:00:220
1307199192,16cyclictest11913-21expr22:55:130
13071991919,0cyclictest0-21swapper/022:35:150
13071991916,2cyclictest340-21cat19:45:010
13071991916,1cyclictest0-21swapper/022:05:020
13071991915,3cyclictest22199-21grep20:20:190
13071991913,4cyclictest0-21swapper/021:45:010
1307199190,3cyclictest0-21swapper/000:35:000
1307199190,18cyclictest0-21swapper/022:21:510
1308099182,15cyclictest0-21swapper/220:45:162
13080991816,1cyclictest0-21swapper/223:42:182
13080991816,1cyclictest0-21swapper/223:30:132
13080991816,1cyclictest0-21swapper/222:25:182
13080991815,2cyclictest22992-21cat23:15:142
13080991815,2cyclictest20227-21cat23:10:132
13080991815,2cyclictest11671-21cupsd21:19:162
13080991814,3cyclictest0-21swapper/200:05:002
1308099181,16cyclictest3238-21systemctl21:40:202
1308099181,16cyclictest13276-21expr22:00:142
1308099181,15cyclictest0-21swapper/219:14:042
1308099180,17cyclictest1526-21lxd19:28:502
1308099180,16cyclictest0-21swapper/222:40:182
1307599182,15cyclictest1720-21expr23:35:131
1307599182,15cyclictest0-21swapper/122:39:061
13075991816,1cyclictest26264-21taskset19:30:491
13075991815,2cyclictest0-21swapper/123:55:181
13075991814,3cyclictest0-21swapper/123:20:181
1307599180,17cyclictest17708-21fschecks_time23:05:141
1307599180,16cyclictest6266-21cpuspeed_turbos22:45:141
1307599180,16cyclictest30227-21anvil23:30:361
1307199182,15cyclictest279682sleep022:25:160
1307199182,15cyclictest0-21swapper/022:30:140
13071991816,1cyclictest29478-21latency_hist19:40:010
13071991816,1cyclictest27908-21date23:25:010
13071991816,1cyclictest21534-21cut19:25:020
13071991816,1cyclictest14904-21latency_hist20:10:010
13071991816,1cyclictest0-21swapper/023:25:120
13071991815,2cyclictest7174-21sed21:50:000
13071991815,2cyclictest592-21chrt21:37:350
13071991815,2cyclictest10615-21fschecks_count21:55:140
13071991814,3cyclictest0-21swapper/000:29:330
13071991814,3cyclictest0-21swapper/000:10:110
1307199181,16cyclictest0-21swapper/023:15:490
1307199180,3cyclictest30464-21chrt21:34:530
1307199180,17cyclictest31350-21cstates23:30:130
1307199180,17cyclictest0-21swapper/023:35:190
1307199180,14cyclictest0-21swapper/021:50:180
13080991715,1cyclictest26282-21/usr/sbin/munin21:25:172
13080991715,1cyclictest24206-21timerandwakeup00:10:202
13080991715,1cyclictest0-21swapper/223:00:012
13080991715,1cyclictest0-21swapper/222:05:172
13080991715,1cyclictest0-21swapper/221:35:132
13080991714,2cyclictest8652-21awk21:50:152
13080991714,2cyclictest3026-21postgres21:30:032
1308099171,15cyclictest0-21swapper/219:45:012
1308099170,2cyclictest9242-21sendmail20:00:012
1308099170,2cyclictest8878-21cut23:45:182
1308099170,2cyclictest3707-21master23:35:562
1308099170,2cyclictest3182-21apt-get19:50:022
1308099170,2cyclictest24034-21cpuspeed_turbos20:25:132
1308099170,2cyclictest21273-21expr20:20:132
1308099170,2cyclictest18465-21nvmesmart_nvme023:05:182
1308099170,2cyclictest15328-21/usr/sbin/munin20:10:162
1308099170,2cyclictest13481-21cat20:05:172
1308099170,16cyclictest690-21fschecks_time22:35:142
1308099170,16cyclictest6774-21chrt21:48:502
1308099170,16cyclictest6475-21find00:38:582
1308099170,16cyclictest30451-21sed22:30:172
1308099170,16cyclictest29182-21memory23:25:152
1308099170,16cyclictest29171-21nfsd400:20:182
1308099170,16cyclictest26122-21timerwakeupswit19:30:232
1308099170,16cyclictest2357-21grep00:30:182
1308099170,16cyclictest23133-21taskset22:16:202
1308099170,16cyclictest18949-21irqstats20:15:162
1308099170,16cyclictest18214-21latency21:10:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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