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2026-07-05 - 08:36
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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 rackbslot7.osadl.org (updated Sun Jul 05, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3963220415,68sleep24008-21awk18:57:422
41339911931,43cyclictest0-21swapper/122:32:561
3663211210,20sleep00-21swapper/018:53:450
41379911155,11cyclictest277-21dbus-daemon22:07:422
4129991047,80cyclictest5272-21apt-get23:27:580
4129991033,69cyclictest3414-21ssh21:37:590
4133991013,75cyclictest7215-21apt-get22:38:051
41339910125,39cyclictest26845-21tune2fs21:23:041
4137999913,76cyclictest5859-21ssh23:29:062
412999998,79cyclictest3317-21apt-get00:17:550
413399983,69cyclictest3395-21chrt00:18:051
290229711,59sleep12930-21/usr/sbin/munin18:53:091
412999955,70cyclictest8498-21apt-get23:33:010
4133999326,36cyclictest18677-21fschecks_time22:03:041
412999933,50cyclictest15-21ksoftirqd/000:26:380
412999933,50cyclictest15-21ksoftirqd/000:26:380
4137999210,69cyclictest3354-21apt-get21:38:442
4133999262,23cyclictest352-21runrttasks00:23:191
4133999262,23cyclictest352-21runrttasks00:23:191
4133999231,23cyclictest1999-21rm21:35:271
4133999231,23cyclictest1999-21rm21:35:271
4133999162,18cyclictest24314-21latency_hist22:12:441
412999905,76cyclictest18123-21kworker/u18:3+ext4-rsv-conversion22:38:080
4137998910,70cyclictest8478-21/usr/sbin/munin23:34:032
4133998932,27cyclictest31774-21seq00:11:281
4133998923,28cyclictest0-21swapper/119:32:391
413399886,57cyclictest21922-21apt-get23:02:561
413399886,57cyclictest21922-21apt-get23:02:561
4133998863,16cyclictest20834-21fschecks_time23:53:041
4133998826,25cyclictest0-21swapper/122:20:511
4133998822,34cyclictest15044-21ntpq23:43:081
412999889,45cyclictest15-21ksoftirqd/022:56:010
412999889,45cyclictest15-21ksoftirqd/022:56:010
4137998771,10cyclictest14240-21modprobe21:02:412
4133998729,25cyclictest17047-21seq19:33:401
4133998729,23cyclictest27108-21seq20:05:281
4133998724,22cyclictest0-21swapper/120:17:471
4133998720,29cyclictest0-21swapper/123:13:041
4133998630,28cyclictest11250-21diskmemload21:52:411
4133998630,28cyclictest11250-21diskmemload21:52:411
4133998626,26cyclictest32278-21sh21:32:411
4133998626,26cyclictest21887-21seq23:02:371
4133998625,28cyclictest6663-21grep20:43:041
4133998625,28cyclictest6663-21grep20:43:041
4133998624,25cyclictest6451-21cat23:29:241
4133998623,26cyclictest2828-21munin-run00:17:431
4133998623,23cyclictest0-21swapper/119:15:011
4133998623,23cyclictest0-21swapper/119:15:011
4133998622,34cyclictest15657-21unixbench_singl21:03:201
4129998611,42cyclictest870-21mailstats21:33:140
4129998611,42cyclictest870-21mailstats21:33:140
4133998542,29cyclictest17641-21apt-get19:37:541
4133998532,19cyclictest300-21rs:main1
4133998531,19cyclictest20295-21seq19:44:091
4133998529,23cyclictest1032-21seq20:24:321
4133998524,29cyclictest6656-21tune2fs21:43:031
4133998523,21cyclictest0-21swapper/120:10:341
4133998523,21cyclictest0-21swapper/120:10:341
4133998521,27cyclictest5407-21runrttasks18:59:541
4133998460,16cyclictest4120-21cyclictest20:49:021
4133998459,16cyclictest14342-21sh23:42:451
4133998459,16cyclictest14342-21sh23:42:451
4133998452,23cyclictest13490-21grep19:23:151
4133998431,20cyclictest30316-21seq20:15:041
4133998431,20cyclictest30316-21seq20:15:041
4133998430,27cyclictest352-21runrttasks22:27:551
4133998425,26cyclictest0-21swapper/121:17:181
4133998424,24cyclictest8995-21ssh23:34:031
4133998420,30cyclictest0-21swapper/123:58:161
414299834,44cyclictest0-21swapper/323:33:543
4137998362,14cyclictest11250-21diskmemload23:38:002
4137998362,14cyclictest11250-21diskmemload23:38:002
4137998341,14cyclictest18479-21ssh22:56:292
4137998341,14cyclictest18479-21ssh22:56:292
4137998327,28cyclictest4684-21ssh00:19:372
4133998327,23cyclictest23795-21seq19:57:261
4133998326,27cyclictest17106-21find22:53:181
4133998326,27cyclictest17106-21find22:53:181
4133998324,25cyclictest16339-21grep21:58:171
4133998323,24cyclictest106612awk20:53:221
4133998323,24cyclictest106612awk20:53:221
4133998321,28cyclictest0-21swapper/121:38:581
4129998363,14cyclictest21091-21latency_hist22:07:430
4129998355,19cyclictest6661-21latency_hist22:37:450
412999835,44cyclictest15-21ksoftirqd/021:26:010
412999832,39cyclictest15-21ksoftirqd/022:18:140
4137998268,7cyclictest0-21swapper/219:02:412
4133998238,37cyclictest0-21swapper/100:02:521
4133998227,23cyclictest9089-21seq19:09:591
4133998227,23cyclictest9089-21seq19:09:591
4133998225,25cyclictest26362-21latency_hist21:22:431
4133998223,22cyclictest0-21swapper/122:50:421
4133998222,29cyclictest31045-21ssh22:23:111
4133998222,29cyclictest31045-21ssh22:23:111
4133998221,28cyclictest0-21swapper/119:18:181
4133998219,28cyclictest0-21swapper/123:08:011
412999826,37cyclictest15-21ksoftirqd/019:57:380
412999823,71cyclictest22645-21ssh23:03:220
412999823,71cyclictest22645-21ssh23:03:220
4129998214,58cyclictest8305-21runrttasks20:48:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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