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2026-05-10 - 12:56
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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 rack1slot3.osadl.org (updated Sun May 10, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198705199140,12cyclictest0-21swapper/323:25:013
198705199140,12cyclictest0-21swapper/320:50:123
198705199130,11cyclictest0-21swapper/321:35:113
198705199130,11cyclictest0-21swapper/319:25:123
198705199130,11cyclictest0-21swapper/300:25:143
198705199120,1cyclictest0-21swapper/300:10:113
198705199120,11cyclictest0-21swapper/322:00:003
198705199120,11cyclictest0-21swapper/321:25:103
198705199120,11cyclictest0-21swapper/300:35:183
1987051991111,0cyclictest0-21swapper/300:20:133
1987051991110,0cyclictest0-21swapper/320:20:113
1987051991110,0cyclictest0-21swapper/320:05:113
198705199110,8cyclictest0-21swapper/319:15:193
198705199110,11cyclictest0-21swapper/319:40:183
198705199110,10cyclictest0-21swapper/323:25:013
198705199110,10cyclictest0-21swapper/323:05:173
198705199110,10cyclictest0-21swapper/322:00:123
198705199110,10cyclictest0-21swapper/320:15:173
198705199110,0cyclictest0-21swapper/323:10:113
198705199110,0cyclictest0-21swapper/322:20:013
198705199110,0cyclictest0-21swapper/321:20:123
198705199110,0cyclictest0-21swapper/321:15:183
198705199110,0cyclictest0-21swapper/319:50:113
198705199109,0cyclictest0-21swapper/323:36:453
1987051991010,0cyclictest26450irq/132-ahci[0000:00:17.0]20:15:013
1987051991010,0cyclictest0-21swapper/323:00:133
1987051991010,0cyclictest0-21swapper/322:40:013
1987051991010,0cyclictest0-21swapper/321:50:103
198705199100,9cyclictest0-21swapper/323:20:013
198705199100,9cyclictest0-21swapper/320:00:163
198705199100,9cyclictest0-21swapper/319:15:013
198705199100,8cyclictest0-21swapper/300:00:133
198705199100,0cyclictest0-21swapper/323:55:113
198705199100,0cyclictest0-21swapper/323:00:013
19870519999,0cyclictest0-21swapper/320:55:193
19870519999,0cyclictest0-21swapper/320:45:013
19870519999,0cyclictest0-21swapper/300:15:013
19870519998,0cyclictest0-21swapper/321:10:123
19870519997,1cyclictest0-21swapper/322:25:113
19870519997,0cyclictest0-21swapper/320:00:013
19870519990,9cyclictest0-21swapper/321:05:183
19870519990,0cyclictest0-21swapper/323:45:173
19870519988,0cyclictest0-21swapper/322:30:123
19870519988,0cyclictest0-21swapper/321:30:133
19870519980,7cyclictest0-21swapper/320:30:123
19870519977,0cyclictest0-21swapper/323:45:013
19870519977,0cyclictest0-21swapper/322:45:483
19870519977,0cyclictest0-21swapper/322:10:123
19870519976,0cyclictest0-21swapper/322:05:273
19870519970,7cyclictest0-21swapper/322:40:103
19870519970,6cyclictest0-21swapper/323:32:293
19870519970,6cyclictest0-21swapper/321:05:003
1985675271,0sleep00-21swapper/019:05:150
19870519966,0cyclictest0-21swapper/322:20:163
19870519966,0cyclictest0-21swapper/320:45:123
1985596261,3sleep30-21swapper/319:05:143
19870519955,0cyclictest0-21swapper/321:45:133
19870519955,0cyclictest0-21swapper/321:43:323
19870519955,0cyclictest0-21swapper/319:22:533
19870519955,0cyclictest0-21swapper/300:34:243
2042542240,2sleep02042563-21munin-run21:30:000
2012201240,3sleep22012351-21python320:10:182
19870519943,0cyclictest0-21swapper/320:25:123
19870519943,0cyclictest0-21swapper/319:30:163
19870519940,3cyclictest2077080-21chrt22:50:113
19870519940,3cyclictest1998054-21chrt19:35:153
19870519940,2cyclictest0-21swapper/300:05:123
1986487242,1sleep10-21swapper/119:05:361
1986466242,1sleep20-21swapper/219:05:212
2110611230,0sleep10-21swapper/100:10:111
2107432230,2sleep22107645-21unixbench_multi00:00:202
2093892230,1sleep12093918-21apt-get23:30:131
2083904231,1sleep12082930-21/usr/sbin/munin23:05:191
2081283230,1sleep12081367-21irqstats23:00:161
2072225230,2sleep02072282-21munin-run22:40:010
2068049230,1sleep02068075-21apt-get22:30:120
2052503230,2sleep22052507-21ssh21:51:242
1993734230,2sleep11994009-21expr19:25:141
1993366230,2sleep01993497-21latency_hist19:25:010
19870519933,0cyclictest0-21swapper/320:35:123
19870519930,2cyclictest0-21swapper/319:45:123
19870519930,1cyclictest0-21swapper/323:50:113
2121304220,1sleep10-21swapper/100:34:571
2115864220,1sleep02116036-21python300:20:190
2105362220,1sleep10-21swapper/123:55:181
2101986220,1sleep02102021-21munin-run23:50:010
2092786220,1sleep00-21swapper/023:25:200
2091863220,1sleep22091804-21/usr/sbin/munin23:25:142
2086842220,1sleep22086900-21apt-config23:15:012
2081668220,0sleep00-21swapper/023:00:180
2079366220,1sleep02079516-21ntp_states22:55:180
2075233220,1sleep12075359-21ntp_states22:45:181
2067259220,1sleep00-21swapper/022:25:200
2066385220,1sleep22066429-21basename22:25:142
2063884220,0sleep00-21swapper/022:20:120
2054012220,1sleep02054072-21/usr/sbin/munin21:55:180
2045287220,1sleep22045440-21memory21:35:152
2040304221,1sleep02013084-21kworker/0:0+events21:22:360
2033593220,1sleep02033764-21python321:05:190
2029119220,1sleep12029384-21diskstats20:55:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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