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2026-05-12 - 11:53
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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 May 12, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26493993230,2cyclictest0-21swapper/121:46:541
2649799246,17cyclictest12046-21sed00:25:002
2649799242,15cyclictest0-21swapper/219:12:262
2649799240,1cyclictest0-21swapper/222:46:322
2649799240,13cyclictest0-21swapper/223:37:522
2649299240,5cyclictest0-21swapper/022:20:010
2649299240,3cyclictest21504-21date19:55:170
2649299240,2cyclictest31496-21awk00:00:170
2649299240,11cyclictest0-21swapper/023:47:540
2649799234,17cyclictest32377-21expr20:15:162
2649799234,17cyclictest32377-21expr20:15:152
26497992319,3cyclictest6186-21expr20:25:142
26497992319,3cyclictest16302-21sort22:39:012
26497992319,3cyclictest0-21swapper/219:25:222
26497992318,4cyclictest13200-21latency00:25:182
26497992318,2cyclictest0-21swapper/220:46:322
26492992318,4cyclictest0-21swapper/020:45:140
26492992317,5cyclictest0-21swapper/020:32:370
2649299231,21cyclictest15761-21sed22:35:220
2649299230,3cyclictest3918-21cat20:20:170
2649299230,3cyclictest28768-21sed23:55:210
2649299230,22cyclictest29299-21dpkg20:10:010
2649299230,22cyclictest17150-21tr21:40:200
2649299230,1cyclictest0-21swapper/023:10:210
2649299230,16cyclictest4303-21expr19:25:150
2649799225,16cyclictest8802-21ntpq21:25:202
2649799225,16cyclictest30835-21awk20:10:182
2649799224,17cyclictest29056-21sort21:05:162
2649799224,17cyclictest20660-21taskset21:48:022
26497992219,2cyclictest8242-21sed19:30:212
26497992218,3cyclictest9898-21tr20:30:182
26497992218,3cyclictest5993-21taskset00:10:442
26497992218,3cyclictest26338-21awk23:50:212
26497992218,3cyclictest14426-21cat21:35:212
26497992213,1cyclictest0-21swapper/200:35:522
2649399220,8cyclictest843-21systemd-network21:22:331
2649399220,4cyclictest29492-21cut21:05:181
2649299220,3cyclictest31789-21cat19:15:210
2649299220,2cyclictest6621-21date00:15:000
2649299220,2cyclictest32323-21cut23:05:160
2649299220,2cyclictest30347-21sed23:00:220
2649299220,2cyclictest24225-21smartctl20:00:150
2649299220,2cyclictest17868-21munin-run19:50:010
2649299220,2cyclictest13674-21grep19:40:180
2649299220,21cyclictest6730-21/usr/sbin/munin00:15:160
2649299220,20cyclictest0-21swapper/021:55:410
2649299220,20cyclictest0-21swapper/021:20:010
2649299220,20cyclictest0-21swapper/019:10:280
2649299220,1cyclictest0-21swapper/022:45:120
2649299220,1cyclictest0-21swapper/021:30:140
2649299220,1cyclictest0-21swapper/020:35:170
2649299220,1cyclictest0-21swapper/020:15:160
2649299220,1cyclictest0-21swapper/020:15:150
2649299220,1cyclictest0-21swapper/000:10:010
2649299220,17cyclictest9699-21sed22:25:190
2649299220,16cyclictest7328-21run-parts20:25:230
2649299220,16cyclictest20176-21awk23:40:180
2649299220,16cyclictest17219-21expr22:40:130
2649299220,16cyclictest13473-21awk00:25:190
2649299220,16cyclictest12056-21munin-run19:40:010
2649299220,15cyclictest22230-21sed20:55:010
2649799214,16cyclictest441-21gpg-connect-age19:20:012
2649799214,16cyclictest17834-21kernelversion22:40:172
2649799213,3cyclictest3002-21tr20:20:142
2649799213,17cyclictest0-21swapper/223:19:142
2649799213,17cyclictest0-21swapper/222:15:132
2649799213,17cyclictest0-21swapper/219:50:162
2649799213,17cyclictest0-21swapper/200:08:592
2649799212,18cyclictest0-21swapper/223:10:212
2649799212,18cyclictest0-21swapper/200:00:172
26497992118,2cyclictest4371-21sed21:20:012
26497992118,2cyclictest32649-21cut23:05:182
26497992118,2cyclictest32582-21gpg-connect-age19:20:022
26497992118,2cyclictest27371-21proc_pri22:55:192
26497992118,2cyclictest11700-21mailstats21:30:202
26497992118,2cyclictest0-21swapper/221:55:182
26497992118,2cyclictest0-21swapper/220:40:402
26497992118,2cyclictest0-21swapper/219:45:222
26497992118,2cyclictest0-21swapper/219:40:172
26497992117,3cyclictest0-21swapper/223:25:142
26497992117,3cyclictest0-21swapper/221:40:202
26497992117,3cyclictest0-21swapper/221:20:202
26497992117,3cyclictest0-21swapper/220:50:172
26492992113,7cyclictest3414-21master00:35:390
2649299210,3cyclictest6303-21expr22:20:120
2649299210,2cyclictest8369-21latency21:25:170
2649299210,2cyclictest21924-21grep21:50:130
2649299210,2cyclictest16987-21sed23:35:150
2649299210,2cyclictest11786-21cat22:30:140
2649299210,1cyclictest10493-21/usr/sbin/munin23:25:140
2649299210,1cyclictest0-21swapper/023:50:130
2649299210,1cyclictest0-21swapper/022:55:130
2649299210,1cyclictest0-21swapper/022:50:160
2649299210,1cyclictest0-21swapper/021:50:010
2649299210,1cyclictest0-21swapper/021:10:150
2649299210,1cyclictest0-21swapper/021:05:180
2649299210,1cyclictest0-21swapper/020:08:590
2649299210,1cyclictest0-21swapper/000:30:010
2649299210,16cyclictest7725-21sed23:20:000
2649799204,2cyclictest0-21swapper/221:14:562
2649799203,2cyclictest0-21swapper/223:00:192
2649799203,16cyclictest0-21swapper/223:35:012
2649799202,17cyclictest20747-21/usr/sbin/munin19:55:162
2649799202,17cyclictest0-21swapper/223:40:182
2649799202,17cyclictest0-21swapper/221:00:082
2649799202,17cyclictest0-21swapper/200:30:162
26497992017,2cyclictest7661-21kernelversion00:15:162
26497992017,2cyclictest4035-21H222:10:212
26497992017,2cyclictest25814-21cron20:05:012
26497992017,2cyclictest11443-21cpuspeed_turbos20:35:152
26497992017,2cyclictest0-21swapper/223:55:192
26497992017,2cyclictest0-21swapper/222:25:012
26497992017,2cyclictest0-21swapper/222:00:162
26497992017,2cyclictest0-21swapper/220:05:152
2649399203,16cyclictest4035-21H222:10:211
2649299202,17cyclictest9-21ksoftirqd/022:09:460
26492992014,4cyclictest32438-21tr22:10:150
26492992013,6cyclictest0-21swapper/023:20:130
26492992013,6cyclictest0-21swapper/023:20:120
2649299200,1cyclictest202732chrt19:54:120
2649299200,1cyclictest15621-21latency_hist21:40:010
2649299200,1cyclictest0-21swapper/019:20:010
2649299200,1cyclictest0-21swapper/000:20:220
2649299200,19cyclictest0-21swapper/022:00:190
2649299200,19cyclictest0-21swapper/019:30:130
2649299200,18cyclictest0-21swapper/023:35:010
2649299200,0cyclictest0-21swapper/021:00:090
2649799192,3cyclictest0-21swapper/222:30:132
2649799192,16cyclictest0-21swapper/222:50:502
2649799192,16cyclictest0-21swapper/221:50:122
26497991917,1cyclictest0-21swapper/223:45:182
26497991916,2cyclictest1912-21ls22:10:222
26497991915,3cyclictest844-21rpcbind19:35:182
26493991913,5cyclictest426-21systemd-udevd19:26:521
2649399190,18cyclictest13914-21latency_hist20:40:001
2649399190,18cyclictest0-21swapper/123:10:001
2649299190,4cyclictest0-21swapper/020:40:140
2649299190,1cyclictest0-21swapper/021:20:210
2649299190,1cyclictest0-21swapper/020:55:040
26497991815,2cyclictest0-21swapper/223:20:132
26497991815,2cyclictest0-21swapper/223:20:132
2649799181,16cyclictest0-21swapper/222:25:192
2649399182,2cyclictest3985-21H222:10:211
2649399182,15cyclictest21-21ksoftirqd/123:55:001
2649399182,15cyclictest15417-21cut20:40:191
2649399181,16cyclictest0-21swapper/119:13:331
2649399180,2cyclictest3985-21H222:10:211
2649399180,17cyclictest426-21systemd-udevd22:18:511
2649799170,16cyclictest0-21swapper/220:55:042
2649399172,15cyclictest21-21ksoftirqd/123:26:171
26493991715,1cyclictest7699-21grep19:30:171
26493991715,1cyclictest0-21swapper/120:49:361
26493991715,1cyclictest0-21swapper/120:12:101
26493991715,1cyclictest0-21swapper/100:05:131
26493991714,2cyclictest6362-21/usr/sbin/munin20:25:151
26493991714,2cyclictest3976-21H222:10:211
26493991714,2cyclictest3287-21grep23:10:171
26493991714,2cyclictest29156-21expr23:00:141
26493991714,2cyclictest19335-21http22:45:011
26493991714,2cyclictest1912-21vmstat20:15:241
26493991714,2cyclictest1912-21vmstat20:15:241
26493991714,2cyclictest13508-21kernelversion19:40:161
26493991714,2cyclictest11252-21/usr/sbin/munin22:30:121
26493991714,1cyclictest0-21swapper/100:35:141
2649399171,15cyclictest3980-21H222:10:211
2649399171,15cyclictest21-21ksoftirqd/123:30:111
2649399170,2cyclictest7635-21if_lxdbr000:15:171
2649399170,2cyclictest455-21plymouthd20:04:341
2649399170,2cyclictest4378-21sed21:20:021
2649399170,2cyclictest4035-21H222:10:211
2649399170,2cyclictest3985-21H222:10:211
2649399170,2cyclictest3979-21H222:10:211
2649399170,2cyclictest32328-21apache_accesses22:10:121
2649399170,2cyclictest27832-21hddtemp_smartct23:55:151
2649399170,2cyclictest1826-21cupsd21:34:461
2649399170,2cyclictest12041-21cat19:40:021
2649399170,2cyclictest10744-21grep00:20:181
2649399170,1cyclictest3987-21H222:10:211
2649399170,1cyclictest3987-21H222:10:211
2649399170,16cyclictest6617-21systemctl23:15:211
2649399170,16cyclictest31418-21needreboot00:00:171
2649399170,16cyclictest30589-21needreboot22:05:181
2649399170,16cyclictest27846-21users22:55:211
2649399170,16cyclictest16014-21sshd22:36:031
2649399170,16cyclictest10501-21vmstat22:25:251
26493991614,1cyclictest4550-21cat00:10:131
26493991614,1cyclictest0-21swapper/119:56:331
26493991614,1cyclictest0-21swapper/119:50:121
26493991614,1cyclictest0-21swapper/119:20:151
2649399160,2cyclictest14690-21sed21:35:221
2649399160,15cyclictest8622-21cpuspeed_turbos20:30:131
2649399160,15cyclictest7771-21find23:20:091
2649399160,15cyclictest7771-21find23:20:091
2649399160,15cyclictest3450-21gsd-color21:50:121
2649399160,15cyclictest3351-21lxd20:50:491
2649399160,15cyclictest31197-21apache_accesses21:10:121
2649399160,15cyclictest22985-21grep20:55:161
2649399160,15cyclictest22786-21dpkg22:50:141
2649399160,15cyclictest20036-21/usr/sbin/munin22:45:221
2649399160,15cyclictest12648-21cat00:25:151
2649399160,15cyclictest0-21swapper/123:45:141
2649399160,15cyclictest0-21swapper/121:55:131
2649399160,15cyclictest0-21swapper/119:45:141
2649399150,1cyclictest0-21swapper/121:00:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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