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2026-04-28 - 09:02
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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 highest latencies:
System rackdslot0.osadl.org (updated Tue Apr 28, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9607992725,1cyclictest629-21mii-tool23:40:152
9598992414,5cyclictest0-21swapper/023:20:190
960399224,12cyclictest0-21swapper/100:10:001
9598992118,2cyclictest25917-21php7.019:39:010
959899200,19cyclictest843-21systemd-network23:58:160
959899200,17cyclictest0-21swapper/021:28:330
960799192,16cyclictest22548-21cpuspeed_turbos20:30:132
960799192,16cyclictest15542-21smartctl22:10:182
9607991917,1cyclictest0-21swapper/222:40:152
960799190,2cyclictest13325-21latency_hist20:15:012
960799190,16cyclictest3979-21H222:10:212
960399192,16cyclictest14499-21snapd22:27:581
9603991917,1cyclictest0-21swapper/123:15:181
9603991917,1cyclictest0-21swapper/123:15:181
9598991917,1cyclictest0-21swapper/019:34:480
9598991916,2cyclictest16536-21sed22:15:010
9598991916,2cyclictest1100-21snmpd21:00:010
959899190,3cyclictest25911-21iwlist20:35:160
960799182,15cyclictest4338-21cpuspeed_turbos22:50:142
9607991816,1cyclictest0-21swapper/222:18:572
9607991816,1cyclictest0-21swapper/200:26:472
9607991815,2cyclictest27669-21nfsd419:40:182
9607991815,2cyclictest1811-21timerwakeupswit21:45:232
9607991814,3cyclictest26455-21ntp_states22:30:182
9607991814,3cyclictest0-21swapper/223:05:012
960799180,17cyclictest16302-21apt-key20:20:002
960799180,17cyclictest0-21swapper/222:22:412
960799180,16cyclictest5525-21munin-plugin-st21:55:002
960399182,1cyclictest16698-21ntp_offset21:15:211
960399182,15cyclictest0-21swapper/119:30:211
9603991814,1cyclictest0-21swapper/119:55:141
9603991813,2cyclictest3979-21H222:10:211
9598991815,2cyclictest5382-21nfsd422:50:190
9598991815,1cyclictest0-21swapper/019:46:220
959899181,16cyclictest9381-21nfsd420:05:180
959899180,17cyclictest14505-21snapd23:15:280
959899180,17cyclictest14505-21snapd23:15:280
959899180,17cyclictest0-21swapper/023:35:180
959899180,17cyclictest0-21swapper/021:10:210
959899180,15cyclictest0-21swapper/020:55:120
960799172,1cyclictest28-21ksoftirqd/200:04:402
9607991715,1cyclictest3989-21H222:10:212
9607991715,1cyclictest0-21swapper/220:20:222
9607991715,1cyclictest0-21swapper/219:50:222
9607991714,2cyclictest736-21cat20:50:012
9607991714,2cyclictest30055-21chrt20:41:462
9607991714,2cyclictest29870-21fschecks_time19:45:162
9607991714,2cyclictest28065-21ps23:30:162
9607991714,2cyclictest25812-21http_loadtime20:35:162
9607991714,2cyclictest21500-21cat23:20:142
9607991714,2cyclictest1054-21acpi20:50:092
9607991714,2cyclictest0-21swapper/221:10:192
960799170,2cyclictest5439-21grep20:55:182
960799170,2cyclictest1879-21ls22:45:182
960799170,16cyclictest9870-21threads20:05:222
960799170,16cyclictest5277-21postgres23:49:522
960799170,16cyclictest399-20systemd-journal23:15:012
960799170,16cyclictest399-20systemd-journal23:15:002
960799170,16cyclictest3976-21H222:10:212
960799170,16cyclictest32342-21nfsd400:35:182
960799170,16cyclictest29147-21ntp_kernel_err22:35:162
960799170,16cyclictest28552-21cat00:30:142
960799170,16cyclictest27189-21expr21:35:142
960799170,16cyclictest24760-21awk21:30:192
960799170,16cyclictest21699-21wc00:15:222
960799170,16cyclictest18723-21fschecks_time21:20:132
960799170,16cyclictest11243-21nfsd419:10:182
960799170,16cyclictest10376-21fschecks_time21:05:152
960799170,16cyclictest10376-21fschecks_time21:05:152
960799170,16cyclictest0-21swapper/222:00:182
960799170,15cyclictest0-21swapper/223:10:182
9603991715,1cyclictest238572chrt23:25:071
9603991715,1cyclictest0-21swapper/122:07:321
9603991715,1cyclictest0-21swapper/120:55:111
9603991715,1cyclictest0-21swapper/120:40:181
9603991715,1cyclictest0-21swapper/120:32:201
9603991714,2cyclictest9821-21grep22:00:181
9603991714,2cyclictest6544-21sed22:55:001
9603991714,2cyclictest3654-21idleruntime23:45:171
9603991714,2cyclictest32522-21expr23:40:131
9603991714,2cyclictest32218-21latency_hist21:45:011
9603991714,2cyclictest20376-21expr00:15:151
9603991714,2cyclictest161322sleep122:11:071
9603991714,2cyclictest0-21swapper/119:15:001
9603991714,1cyclictest0-21swapper/121:00:161
9603991713,3cyclictest0-21swapper/100:12:521
9603991713,3cyclictest0-21swapper/100:12:521
960399171,15cyclictest0-21swapper/100:25:001
960399170,2cyclictest9237-21/usr/sbin/munin23:55:141
960399170,2cyclictest4036-21H222:10:211
960399170,2cyclictest3979-21H222:10:211
960399170,2cyclictest32318-21awk20:45:221
960399170,2cyclictest2723-21/usr/sbin/munin21:50:121
960399170,2cyclictest1448-21expr20:50:131
960399170,2cyclictest1085-21gdbus19:25:211
960399170,1cyclictest0-21swapper/123:38:581
960399170,1cyclictest0-21swapper/119:35:451
960399170,16cyclictest9821-21cpuspeed_turbos23:00:141
960399170,16cyclictest28996-21nfsd422:35:151
960399170,16cyclictest25568-21taskset21:31:411
959899172,1cyclictest0-21swapper/021:59:080
9598991715,1cyclictest0-21swapper/019:12:580
9598991715,1cyclictest0-21swapper/000:15:180
9598991714,2cyclictest31910-21uname00:35:170
9598991714,2cyclictest28760-21cron19:45:010
9598991714,2cyclictest25781-21timerwakeupswit23:25:220
9598991714,2cyclictest2485-21awk20:50:170
9598991714,2cyclictest20461-21cut19:30:010
9598991714,2cyclictest16190-21python320:20:010
9598991714,2cyclictest1085-21gdbus22:25:200
9598991713,3cyclictest0-21swapper/020:30:590
959899171,15cyclictest19047-21cat00:10:220
959899171,15cyclictest19047-21cat00:10:220
959899170,2cyclictest9247-21cron21:09:560
959899170,2cyclictest9247-21cron21:09:560
959899170,2cyclictest32322-21grep23:40:120
959899170,2cyclictest24483-21switchtime00:20:220
959899170,2cyclictest14501-21snapd19:22:580
959899170,2cyclictest1351-21lxd20:26:480
959899170,2cyclictest12595-21/usr/sbin/munin19:15:170
959899170,2cyclictest10918-21awk23:00:180
959899170,16cyclictest8666-21sed22:55:210
959899170,16cyclictest5924-21cat20:00:150
959899170,16cyclictest31341-21grep22:40:140
959899170,16cyclictest29032-21awk22:35:160
959899170,16cyclictest28075-21sort20:40:140
959899170,16cyclictest26882-21expr23:30:110
959899170,16cyclictest26176-21apt-config21:35:000
959899170,16cyclictest20150-21cat22:20:130
959899170,16cyclictest15224-21latency_hist23:10:000
959899170,16cyclictest12478-21awk00:00:190
959899170,16cyclictest1085-21gdbus00:05:210
959899170,16cyclictest0-21swapper/021:15:240
9607991615,1cyclictest0-21swapper/221:55:142
9607991614,1cyclictest0-21swapper/223:05:142
9607991614,1cyclictest0-21swapper/219:20:152
9607991613,2cyclictest3979-21H222:10:212
9607991613,2cyclictest17321-21/usr/sbin/munin00:10:172
9607991613,2cyclictest17321-21/usr/sbin/munin00:10:172
9607991613,2cyclictest11816-21df22:05:142
960799160,1cyclictest0-21swapper/223:35:152
960799160,1cyclictest0-21swapper/219:30:212
960799160,15cyclictest7200-21cat21:00:112
960799160,15cyclictest29734-21expr21:40:132
960799160,15cyclictest21331-21expr21:25:132
960799160,15cyclictest15755-21cstates21:15:162
960799160,15cyclictest12633-21wc19:15:162
960799160,15cyclictest0-21swapper/223:50:082
960799160,15cyclictest0-21swapper/223:25:142
960799160,15cyclictest0-21swapper/222:55:132
960799160,15cyclictest0-21swapper/222:25:142
960799160,15cyclictest0-21swapper/219:25:142
9603991614,2cyclictest0-21swapper/120:03:181
9603991614,1cyclictest27164-21cat23:30:121
9603991614,1cyclictest0-21swapper/122:56:011
9603991614,1cyclictest0-21swapper/122:45:181
9603991614,1cyclictest0-21swapper/122:40:211
9603991614,1cyclictest0-21swapper/121:35:201
9603991614,1cyclictest0-21swapper/121:20:131
9603991614,1cyclictest0-21swapper/120:35:181
9603991614,1cyclictest0-21swapper/120:25:141
9603991614,1cyclictest0-21swapper/120:10:131
9603991614,1cyclictest0-21swapper/119:45:141
9603991614,1cyclictest0-21swapper/119:45:011
9603991614,1cyclictest0-21swapper/119:20:181
9603991614,1cyclictest0-21swapper/119:15:181
9603991614,1cyclictest0-21swapper/100:00:151
9603991613,2cyclictest14499-21snapd21:10:281
960399160,2cyclictest25972-21expr00:25:141
960399160,1cyclictest32527-21expr21:45:141
960399160,15cyclictest77862chrt21:56:251
960399160,15cyclictest6021-21expr23:50:121
960399160,15cyclictest31442-21expr00:35:131
960399160,15cyclictest26474-21smartctl22:30:191
960399160,15cyclictest22465-21awk23:20:181
960399160,15cyclictest17660-21if_eno122:15:161
960399160,15cyclictest10151-21lxd19:52:491
960399160,15cyclictest0-21swapper/121:25:161
960399160,15cyclictest0-21swapper/121:05:141
960399160,15cyclictest0-21swapper/121:05:141
960399160,15cyclictest0-21swapper/120:20:011
960399160,15cyclictest0-21swapper/120:15:191
9598991614,1cyclictest3987-21H222:10:210
9598991614,1cyclictest0-21swapper/023:45:230
9598991614,1cyclictest0-21swapper/022:15:140
9598991614,1cyclictest0-21swapper/022:00:130
9598991614,1cyclictest0-21swapper/020:10:150
9598991614,1cyclictest0-21swapper/000:30:170
9598991613,2cyclictest26752-21cpuspeed_turbos21:35:130
9598991613,2cyclictest1516-21lxd21:48:490
959899160,2cyclictest29881-21expr21:40:140
959899160,1cyclictest3450-21gsd-color22:45:200
959899160,1cyclictest0-21swapper/000:25:160
959899160,15cyclictest593-21sed19:50:170
959899160,15cyclictest4779-21ls21:50:220
959899160,15cyclictest3413-21latency19:55:180
959899160,15cyclictest31939-21nfsd420:45:190
959899160,15cyclictest11460-21expr22:05:120
959899160,15cyclictest0-21swapper/023:50:120
959899160,15cyclictest0-21swapper/023:10:140
959899160,15cyclictest0-21swapper/021:20:160
959899160,15cyclictest0-21swapper/020:20:130
960399150,1cyclictest0-21swapper/100:30:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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