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2026-07-15 - 08:19
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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 Wed Jul 15, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1487999230,20cyclictest0-21swapper/122:04:291
14879992212,7cyclictest0-21swapper/119:55:181
14878992214,4cyclictest0-21swapper/020:56:120
14880992119,1cyclictest28-21ksoftirqd/200:25:282
1487999210,20cyclictest0-21swapper/100:35:201
1487899211,3cyclictest0-21swapper/019:35:470
1488099202,17cyclictest0-21swapper/223:07:252
1488099202,17cyclictest0-21swapper/200:15:412
1488099200,3cyclictest0-21swapper/222:10:212
1488099200,19cyclictest0-21swapper/222:00:162
14879992011,0cyclictest0-21swapper/122:55:181
14878992013,3cyclictest0-21swapper/020:23:360
1488099194,1cyclictest0-21swapper/223:17:192
1488099192,16cyclictest7115-21sed20:50:012
1488099192,16cyclictest0-21swapper/219:33:012
14880991916,2cyclictest31113-21processes21:30:202
14880991916,2cyclictest29598-21idleruntime19:35:162
1488099191,17cyclictest0-21swapper/221:52:132
1488099190,3cyclictest0-21swapper/223:48:502
1488099190,3cyclictest0-21swapper/222:35:122
1488099190,3cyclictest0-21swapper/221:01:032
1487999192,16cyclictest993-21dbus-daemon19:45:221
1487999190,18cyclictest0-21swapper/120:22:331
1487999190,18cyclictest0-21swapper/119:26:511
1487899192,16cyclictest19714-21fschecks_time20:15:160
1487899190,18cyclictest4351-21missed_timers21:40:180
1487899190,18cyclictest4351-21missed_timers21:40:170
1487899190,17cyclictest18597-21fschecks_time19:15:160
1488099182,2cyclictest16074-21expr23:00:132
1488099182,1cyclictest0-21swapper/219:45:012
1488099182,15cyclictest0-21swapper/222:53:322
14880991815,1cyclictest0-21swapper/219:50:392
14880991814,3cyclictest29123-21proc_pri20:30:202
1488099181,2cyclictest8539-21ls21:50:012
1488099181,2cyclictest30011-21sed00:20:202
1488099181,16cyclictest29856-21cat23:25:012
1488099180,3cyclictest8548-21postgres23:44:112
1488099180,3cyclictest2311-21sessionclean21:39:002
1488099180,3cyclictest21269-21awk00:05:192
1488099180,3cyclictest10276-21awk20:00:012
1488099180,2cyclictest15869-21grep19:10:162
1488099180,17cyclictest3980-21H222:10:212
1488099180,17cyclictest27127-21cat20:30:012
1488099180,17cyclictest0-21swapper/220:55:172
1487999182,15cyclictest8966-21cat21:50:141
14879991814,3cyclictest2007-21systemd-journal20:04:141
14879991814,3cyclictest0-21swapper/119:54:551
14879991813,4cyclictest0-21swapper/121:29:211
1487999181,16cyclictest993-21dbus-daemon00:25:211
1487999181,16cyclictest31089-21needreboot23:25:181
1487999181,16cyclictest10489-21cpuspeed_turbos22:50:151
1487999180,3cyclictest399-20systemd-journal22:07:191
1487899182,15cyclictest0-21swapper/020:10:010
14878991816,1cyclictest0-21swapper/021:05:220
14878991813,4cyclictest0-21swapper/023:58:570
1487899181,1cyclictest0-21swapper/022:55:140
1487899181,16cyclictest9215-21nfsd419:55:190
14878991810,3cyclictest0-21swapper/000:27:160
1487899180,3cyclictest26484-21apt21:25:010
1487899180,3cyclictest25813-21nfsd423:15:170
1487899180,1cyclictest0-21swapper/019:50:270
1487899180,17cyclictest399-20systemd-journal20:35:010
14880991714,2cyclictest4303-21memory21:40:182
14880991714,2cyclictest4303-21memory21:40:182
14880991714,2cyclictest31338-21ntp_states23:25:192
14880991714,2cyclictest24263-21latency_hist23:15:002
14880991714,2cyclictest21805-21apache_processe20:20:132
14880991714,2cyclictest19961-21irqstats20:15:182
14880991714,2cyclictest18994-21threads00:00:242
14880991714,1cyclictest0-21swapper/221:10:132
1488099171,15cyclictest15864-21chrt20:09:332
1488099171,15cyclictest0-21swapper/223:30:162
1488099170,2cyclictest4707-21chrt19:48:582
1488099170,2cyclictest3606-21wc23:35:142
1488099170,2cyclictest26420-21hddtemp_smartct22:20:162
1488099170,2cyclictest24350-21ntp_states22:15:212
1488099170,2cyclictest24038-21fschecks_count19:25:152
1488099170,2cyclictest23816-21/usr/sbin/munin00:10:162
1488099170,2cyclictest21654-21expr21:15:142
1488099170,2cyclictest17133-21cpuspeed_turbos22:05:152
1488099170,2cyclictest15785-21/usr/sbin/munin21:05:112
1488099170,2cyclictest14236-21expr22:55:192
1488099170,2cyclictest13605-21ls23:50:222
1488099170,1cyclictest0-21swapper/222:49:472
1488099170,16cyclictest9456-21cron20:55:002
1488099170,16cyclictest9456-21cron20:55:002
1488099170,16cyclictest684-21apt-config20:40:012
1488099170,16cyclictest6503-21ls00:35:232
1488099170,16cyclictest3599-21sort00:30:212
1488099170,16cyclictest31459-21cstates22:30:132
1488099170,16cyclictest29140-21hddtemp_smartct22:25:152
1488099170,16cyclictest26867-21taskset21:25:102
1488099170,16cyclictest24578-21expr21:20:142
1488099170,16cyclictest21956-21cut19:20:192
1488099170,16cyclictest19057-21chrt19:15:192
1488099170,16cyclictest18887-21munin-run20:15:012
1488099170,16cyclictest12006-21df21:55:142
1488099170,16cyclictest1193-21mktemp20:40:022
1488099170,16cyclictest11263-21df20:00:142
14879991715,1cyclictest13657-21chrt21:59:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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