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2026-06-19 - 14:44
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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 Fri Jun 19, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27388992417,6cyclictest0-21swapper/000:35:000
2738899233,19cyclictest0-21swapper/000:30:010
27389992219,2cyclictest13854-21if_lxdbr021:35:161
2738899220,21cyclictest870-21systemd-logind21:23:510
2739099212,18cyclictest8209-21fschecks_time21:25:172
2738999210,18cyclictest0-21swapper/119:49:141
2738899212,18cyclictest101rcuc/023:06:000
27388992117,3cyclictest547-21munin-run21:15:010
2739099204,2cyclictest8253-21processes22:20:202
2738999206,12cyclictest0-21swapper/100:30:161
2738999203,2cyclictest4402-21run-parts20:20:191
2739099192,1cyclictest0-21swapper/200:11:452
2739099190,1cyclictest0-21swapper/223:30:152
2739099190,18cyclictest0-21swapper/223:20:142
2739099190,15cyclictest0-21swapper/221:51:042
27389991917,1cyclictest0-21swapper/121:28:291
2738999190,3cyclictest0-21swapper/123:27:151
2738899194,1cyclictest0-21swapper/000:00:130
27388991917,1cyclictest101rcuc/019:17:060
27388991911,5cyclictest0-21swapper/023:25:160
2738899190,16cyclictest3989-21H222:10:210
27390991814,3cyclictest14496-21snapd00:30:282
27390991814,2cyclictest0-21swapper/200:15:172
2739099181,2cyclictest3976-21H222:10:212
2739099181,16cyclictest4099-21H222:10:212
2739099180,3cyclictest18361-21php7.023:39:002
2739099180,2cyclictest3979-21H222:10:212
2739099180,2cyclictest3979-21H222:10:212
2738999182,15cyclictest0-21swapper/123:15:161
2738999182,15cyclictest0-21swapper/122:11:061
27389991815,2cyclictest0-21swapper/120:56:031
27389991814,3cyclictest5601-21lxd20:50:491
27389991814,3cyclictest0-21swapper/119:16:151
2738999181,2cyclictest1708-21expr00:05:151
2738999181,16cyclictest5325-21cat00:10:141
2738999181,16cyclictest24846-21gzip23:50:021
2738999180,3cyclictest8556-21grep00:15:181
2738999180,17cyclictest455-21plymouthd23:10:131
2738999180,16cyclictest0-21swapper/122:00:001
27388991817,1cyclictest29154-21kworker/0:220:33:420
2738899181,16cyclictest31493-21chrt20:13:110
2738899181,14cyclictest111rcu_preempt19:57:210
2738899180,16cyclictest26027-21needreboot21:00:180
2738899180,16cyclictest26027-21needreboot21:00:170
2738899180,16cyclictest24733-21dpkg23:50:020
2738899180,16cyclictest22620-21anvil22:50:120
2738899180,15cyclictest4099-21H222:10:210
2739099172,1cyclictest15854-21kernelversion22:35:172
2739099172,1cyclictest0-21swapper/219:19:512
27390991715,1cyclictest0-21swapper/222:01:392
27390991715,1cyclictest0-21swapper/219:45:152
27390991714,2cyclictest6785-21nfsd420:25:172
27390991714,2cyclictest3991-21H222:10:212
27390991714,2cyclictest3247-21cat21:15:212
27390991714,2cyclictest29270-21/usr/sbin/munin20:10:152
27390991714,2cyclictest21439-21if_lxdbr022:45:152
27390991714,2cyclictest19027-21apt-get21:45:132
27390991714,2cyclictest15527-21awk20:40:202
27390991714,2cyclictest12676-21expr22:30:152
27390991714,2cyclictest11669-21fschecks_time20:35:152
27390991713,3cyclictest455-21plymouthd20:55:132
27390991713,3cyclictest10001-21/usr/sbin/munin00:20:122
27390991713,3cyclictest0-21swapper/219:12:312
2739099170,2cyclictest3707-21master19:36:262
2739099170,2cyclictest3433-21nfsd423:10:172
2739099170,2cyclictest25993-21/usr/sbin/munin22:55:202
2739099170,2cyclictest2293-21nvmesmart_nvme019:20:172
2739099170,2cyclictest20793-21nvmesmart_nvme020:50:202
2739099170,1cyclictest3989-21H222:10:212
2739099170,16cyclictest5732-21forks23:15:132
2739099170,16cyclictest3983-21H222:10:212
2739099170,16cyclictest32489-21expr20:15:132
2739099170,16cyclictest3197-21cstates20:20:132
2739099170,16cyclictest3053-21systemd-logind23:00:512
2739099170,16cyclictest28325-21sed20:05:232
2739099170,16cyclictest24544-21python323:50:012
2739099170,16cyclictest23895-21fschecks_count22:50:152
2739099170,16cyclictest22126-21nfsd419:55:162
2739099170,16cyclictest19908-21kernelversion23:40:182
2739099170,16cyclictest18777-21chrt20:47:412
2739099170,16cyclictest1856-21systemd-udevd21:38:512
2739099170,16cyclictest1590-21fschecks_time22:10:142
2739099170,16cyclictest10152-21fschecks_time22:25:142
27389991715,1cyclictest11683-21grep20:35:151
27389991715,1cyclictest0-21swapper/121:50:121
27389991714,2cyclictest8828-21sed19:30:221
27389991714,2cyclictest6913-21tr22:20:141
27389991714,2cyclictest586-21ls20:15:161
27389991714,2cyclictest31803-21latency00:00:181
27389991714,2cyclictest28640-21memory21:05:171
27389991714,2cyclictest28090-21cat23:55:141
27389991714,2cyclictest17974-21grep20:45:201
27389991714,2cyclictest16073-21apache_volume23:35:121
27389991714,2cyclictest15143-21sed23:30:221
27389991714,2cyclictest11439-21netstat21:30:191
2738999171,15cyclictest29011-21nfsd419:10:171
2738999171,15cyclictest19955-21timerandwakeup00:35:221
2738999170,2cyclictest5586-21run-parts22:15:211
2738999170,2cyclictest5586-21run-parts22:15:201
2738999170,2cyclictest5246-21irqstats19:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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