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2026-03-22 - 18:32
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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 Sun Mar 22, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11695992323,0cyclictest0-21swapper/212:05:162
1169599230,5cyclictest0-21swapper/212:23:502
11690992314,0cyclictest0-21swapper/110:59:011
1169099230,6cyclictest9938-21awk11:49:591
1169099230,22cyclictest0-21swapper/112:31:091
1169599223,13cyclictest20424-21munin-run08:20:002
11695992219,2cyclictest0-21swapper/207:40:162
1169599202,17cyclictest22727-21nfsd412:10:182
11695992012,4cyclictest0-21swapper/209:40:432
11690992016,1cyclictest0-21swapper/107:31:321
11690992012,4cyclictest0-21swapper/112:25:101
11695991916,2cyclictest4275-21http_loadtime12:35:172
11695991916,2cyclictest15536-21expr07:15:152
11695991914,2cyclictest26819-21/usr/sbin/munin07:35:132
11690991917,1cyclictest0-21swapper/109:49:471
11690991916,2cyclictest3053-21systemd-logind10:24:521
11690991916,2cyclictest21533-21nfsd411:10:181
11686991916,2cyclictest993-21dbus-daemon09:20:000
11686991916,2cyclictest16755-21snapd12:37:470
11686991914,4cyclictest4780-21cat09:45:010
11686991912,3cyclictest0-21swapper/008:50:270
1168699190,18cyclictest0-21swapper/007:30:140
1169599189,0cyclictest0-21swapper/211:00:142
1169599189,0cyclictest0-21swapper/207:10:162
11695991816,1cyclictest0-21swapper/210:00:192
11695991816,1cyclictest0-21swapper/208:25:002
11695991815,2cyclictest4452-21latency_hist11:40:002
11695991815,1cyclictest0-21swapper/208:01:202
11695991815,1cyclictest0-21swapper/208:01:202
11695991814,3cyclictest29399-21dpkg08:35:012
11695991814,3cyclictest16744-21snapd08:55:182
11695991813,3cyclictest0-21swapper/208:42:452
1169599181,16cyclictest30101-21cat12:25:132
1169599180,17cyclictest17887-21sed08:15:022
1169099182,15cyclictest201552chrt07:24:391
11690991814,3cyclictest0-21swapper/109:30:001
1169099180,3cyclictest843-21systemd-network11:01:461
1168699182,15cyclictest113652sleep008:03:230
1168699182,15cyclictest113652sleep008:03:220
1168699182,15cyclictest0-21swapper/011:40:170
11686991816,1cyclictest0-21swapper/012:02:570
11686991814,2cyclictest0-21swapper/011:10:180
1168699180,3cyclictest455-21plymouthd11:55:210
1168699180,3cyclictest3041-21https07:50:020
1168699180,17cyclictest7281-21perf09:50:010
1168699180,16cyclictest14892-21apt-config07:15:020
1168699180,15cyclictest3987-21H222:10:210
11695991715,1cyclictest0-21swapper/211:55:162
11695991715,1cyclictest0-21swapper/209:05:162
11695991715,1cyclictest0-21swapper/208:35:012
11695991714,2cyclictest6142-21nfsd411:40:172
11695991714,2cyclictest572-21expr07:45:152
11695991714,2cyclictest5664-21perl09:45:142
11695991714,2cyclictest25956-21ls09:25:112
11695991714,2cyclictest2487-21sed10:39:012
11695991714,2cyclictest24118-21ntp_states09:20:172
11695991714,2cyclictest23756-21which11:15:142
11695991714,2cyclictest21687-21ntpq11:10:182
11695991714,2cyclictest18283-21expr07:20:142
11695991714,2cyclictest18038-21if_enp1s009:10:152
11695991714,2cyclictest12556-21pickup10:59:122
11695991713,3cyclictest23876-21egrep08:25:142
1169599171,15cyclictest29684-21/usr/sbin/munin10:30:212
1169599170,2cyclictest8097-21ls07:55:222
1169599170,2cyclictest5030-21awk07:50:192
1169599170,2cyclictest4951-21pzem_energy08:45:222
1169599170,2cyclictest32744-21/usr/sbin/munin11:30:202
1169599170,2cyclictest32744-21/usr/sbin/munin11:30:192
1169599170,2cyclictest16749-21snapd12:02:472
1169599170,16cyclictest8396-21apt-get10:50:002
1169599170,16cyclictest7659-21/usr/sbin/munin09:50:182
1169599170,16cyclictest6459-21cat08:50:152
1169599170,16cyclictest32609-21cpuspeed_turbos12:30:132
1169599170,16cyclictest31076-21dpkg09:35:022
1169599170,16cyclictest26335-21cstates11:20:132
1169599170,16cyclictest26097-21cat10:20:212
1169599170,16cyclictest17498-21wc11:05:132
1169599170,16cyclictest12617-21cut08:05:162
1169599170,16cyclictest10883-21cstates11:50:142
1169599170,16cyclictest0-21swapper/210:05:202
1169599170,16cyclictest0-21swapper/209:55:112
11690991715,1cyclictest0-21swapper/107:42:301
11690991714,2cyclictest843-21systemd-network11:22:211
11690991714,2cyclictest3356-21nfsd409:40:181
11690991714,2cyclictest31283-21pzem_power08:35:221
11690991714,2cyclictest19112-21needreboot08:15:191
11690991714,2cyclictest16766-21snapd08:42:481
11690991714,2cyclictest1472-21ntpq10:35:181
11690991714,2cyclictest1079-21cups-browsed12:05:211
11690991714,2cyclictest1079-21cups-browsed10:50:011
1169099171,15cyclictest21-21ksoftirqd/110:03:331
1169099171,15cyclictest172312sleep108:11:001
1169099171,15cyclictest0-21swapper/111:35:161
1169099170,2cyclictest8330-21fschecks_time09:50:141
1169099170,2cyclictest4636-21nfsd408:45:191
1169099170,2cyclictest28048-21nfsd407:35:161
1169099170,2cyclictest22036-21df_inode12:10:151
1169099170,2cyclictest1856-21systemd-udevd08:24:521
1169099170,2cyclictest11728-21ntpq11:50:191
1169099170,16cyclictest5610-21hddtemp_smartct11:40:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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