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2026-03-20 - 12:48
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack3slot2.osadl.org (updated Fri Mar 20, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179464522670,5chrt1794634-21ntpq00:06:090
180135022480,4chrt1801348-21memory00:30:280
177153322430,4chrt1771532-21sed22:41:190
177646822340,4chrt1776463-21df_inode23:00:170
172954222030,3sleep01729543-21gcc20:11:200
177350821960,2sleep01773509-21cat22:50:070
178259821860,3sleep01782596-21sendmail_mailtr23:21:150
178481221740,4chrt1784810-21df_inode23:30:150
174596521710,4chrt1745967-21latency21:10:260
173787021690,4chrt1737871-21gcc20:41:040
173320621680,4chrt1733207-21basename20:25:120
178636221660,4chrt1786363-21/usr/sbin/munin23:35:260
171665921650,4chrt1716657-21irqstats19:25:250
179722421630,4chrt1797221-21ntpq00:15:310
176708121600,3chrt1767078-21ntpq22:25:570
171216199159128,20cyclictest1720981-21kworker/u2:119:50:370
171216199156126,19cyclictest1737260-21kworker/u2:220:45:310
173044321410,3sleep01730447-21cpu20:15:130
171216199141112,20cyclictest1745603-21kworker/u2:221:25:060
177913221390,2sleep01779135-21wc23:10:080
171216199139108,20cyclictest1735800-21kworker/u2:020:36:280
172661921350,2sleep01726620-21gcc20:00:450
17121619912994,23cyclictest1792970-21cmp00:00:010
174773521240,3sleep01747736-21readlink21:16:150
174336421210,3sleep01743366-21awk21:00:490
17121619911888,19cyclictest1745603-21kworker/u2:221:30:360
174515521120,2sleep01745156-21timerwakeupswit21:06:350
17121619910677,18cyclictest1773464-21kworker/u2:222:58:570
175718221020,2sleep01757180-21ntp_kernel_err21:50:290
1712161999967,21cyclictest1793115-21munin-node00:00:130
1712161999967,20cyclictest83-21jbd2/mmcblk0p2-22:35:260
1712161999564,20cyclictest1756748-21kworker/u2:022:16:340
1712161998453,20cyclictest1720981-21kworker/u2:119:55:230
172770728212,18sleep01727710-21diskstats20:05:170
172253528213,19sleep01722533-21ntpq19:46:030
1712161998253,20cyclictest1763703-21kworker/u2:122:21:460
17423742819,19sleep01742383-21vmstat20:56:370
171953128113,19sleep01719566-21ntpq19:35:290
171199628121,19sleep00-21swapper19:08:480
172107827812,19sleep01721080-21ntpq19:40:490
180325727713,19sleep01803279-21users00:36:200
178800727711,17sleep01788005-21ntpq23:41:020
173509027710,19sleep01735088-21ntpq20:31:110
171417727712,14sleep01714180-21ntpq19:16:070
176144927511,15sleep01761443-21ntpq22:05:470
1712161997547,19cyclictest1776261-21kworker/u2:023:15:210
179645227311,13sleep00-21swapper00:12:220
17800322737,16sleep00-21swapper23:11:550
171897327310,52sleep0358-21snmpd19:33:500
17506582710,2sleep01750659-21sed21:26:200
1712161996930,17cyclictest1762532-21diskstats22:10:180
175500826811,46sleep0358-21snmpd21:42:120
1712161996839,19cyclictest1780643-21kworker/u2:223:30:060
1712161996737,19cyclictest1745603-21kworker/u2:221:45:120
17898982666,14sleep00-21swapper23:47:500
1712161996614,19cyclictest1712383-21diskstats19:10:180
177389426512,43sleep01773897-21ntpq22:50:310
17691042656,13sleep00-21swapper22:33:430
1712161996514,18cyclictest1798784-21ntp_states00:21:000
17912332645,13sleep00-21swapper23:52:240
17329692645,13sleep00-21swapper20:24:190
1712161996421,18cyclictest0-21swapper21:58:490
1712161996421,18cyclictest0-21swapper20:53:240
1712161996413,19cyclictest1800125-21ntpq00:25:520
1712161996413,18cyclictest1715586-21ntp_states19:21:070
1712161996220,17cyclictest0-21swapper21:37:000
1712161996128,24cyclictest1761006-21latency_hist22:05:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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