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2025-11-19 - 06:49
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot2.osadl.org (updated Wed Nov 19, 2025 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281652203187,12sleep10-21swapper/119:07:041
281052190174,11sleep30-21swapper/319:06:163
282262182165,12sleep00-21swapper/019:07:500
281512177160,12sleep20-21swapper/219:06:522
50522860,0sleep20-21swapper/200:31:362
51342830,0sleep10-21swapper/100:31:381
312342450,0sleep10-21swapper/121:29:401
194782440,0sleep10-21swapper/122:45:021
167742440,0sleep10-21swapper/122:10:221
3722330,1sleep12857499cyclictest23:40:191
285849992,1cyclictest16616-21cron23:00:013
285849990,4cyclictest6139-21sh23:43:253
285849960,5cyclictest0-21swapper/322:50:133
285749962,2cyclictest0-21swapper/123:25:131
285699962,4cyclictest31823-21kworker/0:122:56:480
285699962,4cyclictest31823-21kworker/0:100:33:260
285699961,5cyclictest31823-21kworker/0:100:20:150
285699961,4cyclictest31823-21kworker/0:123:05:030
285699960,5cyclictest0-21swapper/023:40:140
285849953,1cyclictest1993-21/usr/sbin/munin19:20:213
285849950,5cyclictest0-21swapper/323:37:403
285849950,5cyclictest0-21swapper/320:30:123
285849950,3cyclictest23638-21basename00:25:133
285799950,5cyclictest0-21swapper/223:10:212
285799950,5cyclictest0-21swapper/222:17:002
285799950,0cyclictest0-21swapper/200:39:352
285749951,3cyclictest0-21swapper/123:30:121
285749951,2cyclictest0-21swapper/122:50:141
285749951,2cyclictest0-21swapper/120:25:121
285749951,2cyclictest0-21swapper/100:15:141
285749950,5cyclictest0-21swapper/123:39:101
285749950,0cyclictest0-21swapper/120:35:241
285699955,0cyclictest0-21swapper/023:46:420
285699952,3cyclictest31823-21kworker/0:121:05:230
285699952,3cyclictest31823-21kworker/0:119:25:200
285699952,3cyclictest31823-21kworker/0:100:35:120
285699951,4cyclictest31823-21kworker/0:120:30:140
285699951,4cyclictest31811-21munin-run21:30:000
285699951,1cyclictest1142-21cat23:24:560
285699950,5cyclictest0-21swapper/023:03:040
285699950,4cyclictest0-21swapper/021:15:130
12783250,0chrt12784-21diskmemload21:52:273
9801240,0sleep00-21swapper/000:01:160
285849944,0cyclictest0-21swapper/323:52:303
285849944,0cyclictest0-21swapper/323:30:163
285849944,0cyclictest0-21swapper/320:20:133
285849944,0cyclictest0-21swapper/300:30:553
285849943,1cyclictest28679-21/usr/sbin/munin19:10:203
285849942,1cyclictest9890-21/usr/sbin/munin22:40:183
285849942,1cyclictest9588-21/usr/sbin/munin20:40:233
285849942,1cyclictest2529-21ssh23:57:553
285849942,1cyclictest15972-21ssh22:26:233
285849941,3cyclictest0-21swapper/322:46:183
285849940,4cyclictest30106-21ls21:45:163
285849940,4cyclictest14314-21latency_hist20:50:003
285849940,4cyclictest0-21swapper/323:25:123
285849940,4cyclictest0-21swapper/323:22:063
285849940,4cyclictest0-21swapper/323:13:573
285849940,4cyclictest0-21swapper/322:31:133
285849940,4cyclictest0-21swapper/322:23:103
285849940,4cyclictest0-21swapper/321:20:133
285849940,4cyclictest0-21swapper/320:00:153
285849940,4cyclictest0-21swapper/300:00:123
285849940,3cyclictest4661-21sh22:05:043
285849940,3cyclictest32488-21ssh22:02:163
285849940,3cyclictest32403-21ssh21:30:153
285849940,3cyclictest27462-21diskstats20:10:173
285849940,3cyclictest24720-21sh21:42:073
285849940,3cyclictest22750-21cut21:25:163
285849940,3cyclictest20130-21hddtemp_smartct19:55:163
285849940,3cyclictest17680-21sh23:16:063
285849940,3cyclictest16675-21cat22:10:233
285849940,3cyclictest14362-21apt-get19:45:143
285849940,3cyclictest13589-21/usr/sbin/munin00:20:133
285849940,3cyclictest11691-21ssh21:19:583
285849940,3cyclictest10629-21ssh00:35:003
285849940,3cyclictest10576-21ssh00:18:273
285849940,1cyclictest9164-21/usr/sbin/munin23:45:133
285849940,1cyclictest7094-21/usr/sbin/munin20:35:143
285849940,1cyclictest29410-21/usr/sbin/munin20:15:203
285849940,1cyclictest25627-21hddtemp_smartct21:10:163
285849940,1cyclictest19477-21/usr/sbin/munin21:00:133
285849940,1cyclictest17207-21/usr/sbin/munin23:00:193
285849940,1cyclictest1632-21sendmail_mailtr22:35:233
285849940,1cyclictest0-21swapper/300:05:123
285849940,0cyclictest0-21swapper/321:35:213
285849940,0cyclictest0-21swapper/321:09:593
285799944,0cyclictest0-21swapper/219:24:332
285799944,0cyclictest0-21swapper/200:12:222
285799943,1cyclictest7852-21gltestperf20:35:162
285799941,2cyclictest0-21swapper/220:25:132
285799941,2cyclictest0-21swapper/200:25:142
285799941,1cyclictest0-21swapper/220:45:132
285799941,1cyclictest0-21swapper/219:40:122
285799940,4cyclictest3756-21apt-get00:15:142
285799940,4cyclictest2839-21ssh23:58:072
285799940,4cyclictest0-21swapper/223:40:152
285799940,4cyclictest0-21swapper/223:20:132
285799940,4cyclictest0-21swapper/223:03:152
285799940,4cyclictest0-21swapper/222:55:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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