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2026-03-24 - 14:35
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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 Mar 24, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119699232,18cyclictest1816-21apache_accesses21:05:111
119699230,22cyclictest0-21swapper/123:52:311
119699230,22cyclictest0-21swapper/123:25:141
120099226,15cyclictest0-21swapper/223:35:162
1200992212,3cyclictest0-21swapper/220:00:152
119699220,21cyclictest843-21systemd-network19:12:251
119699220,18cyclictest0-21swapper/122:18:571
119599223,11cyclictest14524-21munin-run23:20:000
119699212,16cyclictest0-21swapper/120:37:001
1196992114,3cyclictest0-21swapper/122:20:481
1196992112,0cyclictest0-21swapper/121:45:161
1200992015,2cyclictest0-21swapper/222:20:182
1196992018,1cyclictest0-21swapper/123:02:131
1196992016,3cyclictest0-21swapper/123:32:411
119699200,3cyclictest0-21swapper/119:22:531
1195992020,0cyclictest0-21swapper/023:58:270
120099192,16cyclictest0-21swapper/219:34:472
1200991916,2cyclictest3979-21H222:10:212
120099191,17cyclictest0-21swapper/221:05:192
120099190,18cyclictest0-21swapper/219:18:292
119699193,15cyclictest32290-21sed21:55:211
119699193,15cyclictest18539-21expr00:20:211
119699192,2cyclictest11668-21perf23:14:591
119699192,16cyclictest7512-21cat21:15:011
119699192,16cyclictest14156-21grep00:15:141
1196991917,1cyclictest12193-21cpuspeed_turbos23:15:141
1196991916,1cyclictest0-21swapper/120:43:261
119699191,3cyclictest863-21avahi-daemon21:20:211
119699190,18cyclictest843-21systemd-network21:31:271
119699190,18cyclictest0-21swapper/120:54:381
119699190,18cyclictest0-21swapper/120:14:271
119599193,15cyclictest0-21swapper/022:19:040
1195991914,4cyclictest30511-21ps23:45:190
1195991914,2cyclictest3991-21H222:10:210
120099182,1cyclictest0-21swapper/221:36:292
1200991814,2cyclictest15160-21pzem21:25:202
120099180,3cyclictest560-21cut23:50:182
120099180,17cyclictest5005-21cut22:05:162
120099180,17cyclictest15523-21expr22:25:142
120099180,16cyclictest0-21swapper/223:24:482
119699182,1cyclictest24334-21cat21:40:221
119699182,1cyclictest0-21swapper/121:00:191
119699182,1cyclictest0-21swapper/119:40:131
119699182,15cyclictest307052chrt20:56:591
119699182,15cyclictest28633-21latency_hist23:44:591
119699182,15cyclictest0-21swapper/123:45:211
1196991816,1cyclictest9790-21switchtime21:15:211
1196991816,1cyclictest288002chrt19:58:281
1196991816,1cyclictest22643-21expr00:30:121
1196991815,2cyclictest5134-21expr19:15:141
1196991815,2cyclictest18594-21cstates22:30:121
119699181,2cyclictest29533-21switchtime21:50:201
119699181,2cyclictest16215-21fschecks_time19:35:161
119699181,16cyclictest8493-21chrt20:19:421
119699181,16cyclictest26961-21cstates22:45:171
119699181,16cyclictest21616-21chrt00:25:551
119699180,3cyclictest13401-21sort19:30:131
119699180,17cyclictest870-21systemd-logind20:32:311
119699180,17cyclictest0-21swapper/122:25:131
119699180,16cyclictest0-21swapper/100:09:091
119699180,15cyclictest0-21swapper/123:10:001
119599182,1cyclictest377-21open_inodes21:00:210
119599182,15cyclictest326572chrt21:57:040
119599181,16cyclictest21012-21date19:45:010
119599180,3cyclictest0-21swapper/019:57:360
119599180,16cyclictest4714-21cpuspeed_turbos19:15:140
120099172,1cyclictest28-21ksoftirqd/222:11:152
1200991715,1cyclictest0-21swapper/223:01:472
1200991715,1cyclictest0-21swapper/221:15:222
1200991714,2cyclictest822-21munin-plugin-st22:00:012
1200991714,2cyclictest501-21/usr/sbin/munin22:55:102
1200991714,2cyclictest3989-21H222:10:212
1200991714,2cyclictest28750-21chrt22:46:492
1200991714,2cyclictest26309-21latency_hist19:55:002
1200991714,2cyclictest20457-21if_enp1s000:25:172
1200991714,2cyclictest18949-21timerandwakeup20:35:242
1200991714,2cyclictest16754-21snapd20:55:182
1200991714,2cyclictest15344-21nfsd400:15:182
1200991714,2cyclictest1522-21lxd22:32:342
1200991714,2cyclictest1100-21snmpd22:42:092
1200991714,2cyclictest1079-21cups-browsed23:40:222
120099170,3cyclictest0-21swapper/220:41:592
120099170,2cyclictest7626-21grep23:05:182
120099170,2cyclictest3981-21H222:10:212
120099170,2cyclictest31034-21nfsd422:50:182
120099170,16cyclictest9080-21threads19:20:212
120099170,16cyclictest8863-21cat20:20:012
120099170,16cyclictest5864-21df00:00:132
120099170,16cyclictest3981-21H222:10:212
120099170,16cyclictest23476-21chrt22:39:352
120099170,16cyclictest12826-21idleruntime23:15:152
120099170,16cyclictest11223-21dpkg00:10:002
120099170,16cyclictest10964-21awk22:15:182
1196991714,2cyclictest30427-21missed_timers20:00:181
1196991713,3cyclictest399-20systemd-journal23:35:011
119699171,15cyclictest3251-21chrt22:02:181
119699170,2cyclictest4122-21cat23:55:201
119699170,2cyclictest31362-21/usr/sbin/munin22:50:211
119699170,2cyclictest24494-21/usr/sbin/munin19:50:151
119699170,2cyclictest23044-21cstates20:45:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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