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2026-05-05 - 17:47
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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 Tue May 05, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2502992217,4cyclictest0-21swapper/107:30:171
250299220,1cyclictest0-21swapper/108:00:151
250199220,4cyclictest0-21swapper/009:55:500
2503992113,4cyclictest0-21swapper/210:03:462
250299212,16cyclictest0-21swapper/108:22:141
250199210,3cyclictest0-21swapper/008:23:400
2503992018,1cyclictest271rcuc/210:12:262
250199203,9cyclictest30707-21/usr/sbin/munin11:05:000
250399191,17cyclictest28-21ksoftirqd/210:48:222
250399190,4cyclictest399-20systemd-journal07:28:012
250399190,18cyclictest271rcuc/212:28:112
250399190,17cyclictest5541-21munin-plugin-st07:15:012
250399190,15cyclictest0-21swapper/212:03:192
250299197,1cyclictest0-21swapper/110:35:121
250299192,2cyclictest19547-21timerwakeupswit12:35:211
250199193,15cyclictest0-21swapper/010:40:180
2501991917,1cyclictest0-21swapper/008:55:190
2501991916,2cyclictest1645-21cut11:10:010
250199190,18cyclictest0-21swapper/009:20:590
250399182,15cyclictest4035-21H222:10:212
2503991818,0cyclictest28-21ksoftirqd/211:18:472
2503991816,1cyclictest0-21swapper/211:35:162
250399180,17cyclictest399-20systemd-journal10:23:592
250399180,17cyclictest0-21swapper/211:32:362
250399180,17cyclictest0-21swapper/209:20:182
250399180,15cyclictest271rcuc/209:51:282
250299180,3cyclictest5342-21grep12:10:171
250299180,3cyclictest2203-21latency_hist10:15:001
250299180,16cyclictest0-21swapper/109:48:081
2501991815,2cyclictest4781-21cat12:10:140
2501991814,1cyclictest0-21swapper/007:55:140
250199180,2cyclictest3976-21H222:10:210
250199180,17cyclictest843-21systemd-network09:40:140
250199180,17cyclictest0-21swapper/012:38:420
250399172,1cyclictest28-21ksoftirqd/210:30:172
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,1cyclictest3989-21H222:10:212
2503991715,1cyclictest28-21ksoftirqd/209:45:012
2503991715,1cyclictest28-21ksoftirqd/208:35:202
2503991715,1cyclictest28-21ksoftirqd/207:30:152
2503991715,1cyclictest271rcuc/207:45:152
2503991715,1cyclictest0-21swapper/210:25:182
2503991714,2cyclictest31392-21/usr/sbin/munin11:05:162
2503991714,2cyclictest26317-21/usr/sbin/munin10:55:162
2503991714,2cyclictest21084-21sort07:40:162
2503991712,1cyclictest0-21swapper/209:55:212
250399171,15cyclictest3985-21H222:10:212
250399171,15cyclictest3210-21JS22:10:212
250399171,15cyclictest28-21ksoftirqd/207:55:232
250399171,15cyclictest26278-21smartctl11:50:192
250399170,2cyclictest18865-21nfsd412:35:162
250399170,2cyclictest15624-21tune2fs12:30:152
250399170,2cyclictest14550-21snapd08:01:582
250399170,1cyclictest0-21swapper/209:10:142
250399170,1cyclictest0-21swapper/208:45:122
250399170,16cyclictest8457-21fschecks_time11:20:132
250399170,16cyclictest8430-21threads12:15:192
250399170,16cyclictest5130-21python310:20:012
250399170,16cyclictest32610-21grep09:00:002
250399170,16cyclictest21062-21wget09:35:162
250299172,1cyclictest0-21swapper/109:04:431
2502991715,1cyclictest0-21swapper/112:20:171
2502991714,2cyclictest6561-21munin-plugin-st09:10:011
2502991714,2cyclictest32634-21mailstats10:05:221
2502991714,2cyclictest25413-21expr11:50:131
2502991714,2cyclictest24518-21sed08:45:021
2502991714,2cyclictest2351-21/usr/sbin/munin10:15:091
2502991714,2cyclictest23385-21chrt09:42:341
2502991714,2cyclictest21403-21smtpd11:40:521
2502991714,2cyclictest1829-21systemd-journal07:35:511
2502991714,2cyclictest16894-21expr08:30:131
2502991714,2cyclictest16097-21nfsd409:25:201
2502991714,2cyclictest16097-21nfsd409:25:191
2502991714,2cyclictest13723-21munin-run10:35:001
2502991712,4cyclictest3643-21cat12:10:001
250299170,2cyclictest6357-21grep11:15:171
250299170,2cyclictest455-21plymouthd07:20:141
250299170,2cyclictest399-20systemd-journal11:29:551
250299170,2cyclictest3709-21qmgr11:55:211
250299170,2cyclictest29634-21chrt08:52:121
250299170,2cyclictest25417-21date10:55:011
250299170,2cyclictest19625-21sshd10:44:361
250299170,2cyclictest18141-21cat09:30:141
250299170,2cyclictest1523-21lxd11:24:431
250299170,1cyclictest0-21swapper/108:15:191
250299170,16cyclictest6801-21latency07:15:181
250299170,16cyclictest26140-21fschecks_count10:55:141
250299170,16cyclictest22683-21latency_hist10:50:011
250299170,16cyclictest20215-21grep07:40:121
250299170,16cyclictest16268-21latency_hist08:30:001
250299170,16cyclictest1523-21lxd12:16:431
250299170,16cyclictest10626-21taskset10:26:391
250299170,16cyclictest0-21swapper/111:50:001
2501991714,2cyclictest856-21grep12:05:130
2501991714,2cyclictest3991-21H222:10:210
2501991714,2cyclictest26528-21ls07:50:170
2501991714,2cyclictest22230-21grep11:45:140
2501991714,2cyclictest19501-21grep11:40:130
2501991714,2cyclictest12328-21nfsd411:25:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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