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2025-11-25 - 17:58
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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 rack0slot5.osadl.org (updated Tue Nov 25, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1884571995487,27cyclictest0-21swapper/1200:13:044
18845619953721,515cyclictest0-21swapper/1019:05:042
18845619953721,515cyclictest0-21swapper/1019:05:042
1884561995291,29cyclictest0-21swapper/1022:11:042
1884561995291,29cyclictest0-21swapper/1022:11:042
188453299523522,1cyclictest1951302-21kworker/3:2+i915-unordered20:22:049
188455599521519,2cyclictest2108668-21kworker/9:0+i915-unordered23:18:0415
1884519994780,478cyclictest0-21swapper/000:21:040
188455599474474,0cyclictest1920461-21kworker/9:0+i915-unordered20:06:0415
188452399468438,30cyclictest0-21swapper/119:10:041
188452399468438,30cyclictest0-21swapper/119:10:041
188456699467465,2cyclictest2166201-21kworker/11:2+events00:26:043
188452899459457,2cyclictest1675544-21kworker/2:2+i915-unordered19:05:048
188452899459457,2cyclictest1675544-21kworker/2:2+i915-unordered19:05:048
188457499457427,30cyclictest0-21swapper/1300:21:045
188452899452451,1cyclictest2038805-21kworker/2:0+i915-unordered22:11:048
188452899452451,1cyclictest2038805-21kworker/2:0+i915-unordered22:11:048
1884539994494,28cyclictest0-21swapper/522:40:2711
18845429944822,30cyclictest0-21swapper/623:40:0312
18845429944822,30cyclictest0-21swapper/620:02:0312
18845429944821,29cyclictest0-21swapper/621:08:0212
18845199944721,30cyclictest0-21swapper/022:06:270
18845199944721,30cyclictest0-21swapper/022:06:270
18845839944525,418cyclictest0-21swapper/1521:23:277
18845839944428,415cyclictest2116574-21ntpq23:25:037
18845749944320,419cyclictest0-21swapper/1323:22:265
18845399944318,29cyclictest0-21swapper/522:00:0411
18845399944318,29cyclictest0-21swapper/522:00:0411
18845399944317,28cyclictest0-21swapper/521:45:0311
18845429944115,30cyclictest0-21swapper/620:19:0312
18845429944114,30cyclictest0-21swapper/622:48:0312
18845429944114,30cyclictest0-21swapper/621:32:2512
18845669944025,29cyclictest0-21swapper/1122:53:043
18845619944023,417cyclictest0-21swapper/1021:58:042
18845429943913,30cyclictest0-21swapper/620:46:0312
188453599438437,1cyclictest2095603-21kworker/4:1+i915-unordered00:13:0410
18845839943619,417cyclictest0-21swapper/1500:00:047
188453599434432,2cyclictest1454512-21kworker/4:3+i915-unordered19:49:0510
18845719943315,418cyclictest0-21swapper/1221:06:044
1884539994338,29cyclictest0-21swapper/519:24:2711
1884571994319,422cyclictest0-21swapper/1220:00:284
1884539994315,29cyclictest0-21swapper/523:16:2711
188452399431429,2cyclictest0-21swapper/123:18:041
18845239943118,413cyclictest0-21swapper/119:38:041
18845619943011,419cyclictest0-21swapper/1021:30:042
1884539994305,29cyclictest0-21swapper/522:56:0311
1884539994303,29cyclictest0-21swapper/519:08:0311
1884539994303,29cyclictest0-21swapper/519:08:0311
18845329943013,417cyclictest0-21swapper/321:36:049
1884539994294,29cyclictest0-21swapper/521:38:2811
18845839942626,399cyclictest0-21swapper/1521:43:037
1884539994260,29cyclictest0-21swapper/522:05:2711
1884539994260,29cyclictest0-21swapper/522:05:2711
1884532994267,418cyclictest0-21swapper/323:17:269
1884571994256,415cyclictest0-21swapper/1223:10:264
1884566994258,417cyclictest0-21swapper/1123:06:273
1884555994253,421cyclictest0-21swapper/922:25:2815
1884532994257,418cyclictest0-21swapper/321:56:269
18845839942424,399cyclictest0-21swapper/1500:11:277
18845719942424,397cyclictest0-21swapper/1200:19:264
1884555994249,415cyclictest0-21swapper/922:17:0415
1884555994243,420cyclictest0-21swapper/922:38:2715
18845429942420,0cyclictest0-21swapper/619:45:2612
1884539994240,29cyclictest0-21swapper/520:58:0211
18845289942427,396cyclictest0-21swapper/219:37:048
18845839942324,399cyclictest0-21swapper/1523:07:267
1884539994232,418cyclictest0-21swapper/523:14:2711
1884519994230,423cyclictest0-21swapper/023:05:040
18845839942224,398cyclictest0-21swapper/1521:45:267
18845559942224,397cyclictest0-21swapper/920:26:0315
1884583994210,419cyclictest0-21swapper/1523:56:267
18845839942023,397cyclictest0-21swapper/1519:54:037
1884583994200,418cyclictest0-21swapper/1522:42:277
1884583994200,418cyclictest0-21swapper/1522:08:037
1884583994200,418cyclictest0-21swapper/1522:08:037
18845479942021,398cyclictest0-21swapper/722:44:2613
18845429941922,395cyclictest0-21swapper/620:28:0312
18845289941923,395cyclictest0-21swapper/223:32:048
18845559941817,400cyclictest0-21swapper/919:40:0415
18845429941821,395cyclictest0-21swapper/619:54:2712
18845429941821,393cyclictest0-21swapper/623:25:2612
188453599418416,2cyclictest0-21swapper/419:05:0410
188453599418416,2cyclictest0-21swapper/419:05:0410
18845749941724,393cyclictest0-21swapper/1321:56:045
188454799417416,1cyclictest0-21swapper/723:13:2613
18845429941719,0cyclictest0-21swapper/600:18:0312
1884519994170,416cyclictest1910321-21ntpq19:30:040
188456699416415,1cyclictest0-21swapper/1123:31:153
18845429941620,394cyclictest0-21swapper/621:35:2612
18845429941620,394cyclictest0-21swapper/620:40:2712
18845429941617,397cyclictest0-21swapper/623:02:2612
188452399416415,1cyclictest0-21swapper/120:06:041
18845429941519,394cyclictest0-21swapper/620:33:0312
188456699414410,3cyclictest3682525-21snmpd00:07:533
18845559941422,392cyclictest0-21swapper/922:24:0415
188453999414414,0cyclictest0-21swapper/500:02:0411
18845399941420,393cyclictest0-21swapper/521:12:0411
188457499413411,2cyclictest0-21swapper/1322:27:045
18845559941314,399cyclictest0-21swapper/923:50:0315
18845359941320,13cyclictest1924726-21kworker/4:0+i915-unordered20:59:0410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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