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2025-11-04 - 10:18
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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 highest latencies:
System rackcslot4.osadl.org (updated Tue Nov 04, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19015212259187,57sleep10-21swapper/119:09:341
19012552255187,53sleep00-21swapper/019:06:440
125899640,3rtkit-daemon1257-21rtkit-daemon21:24:490
19780532580,3sleep00-21swapper/021:45:280
19680002520,4sleep10-21swapper/121:32:311
125899520,4rtkit-daemon1257-21rtkit-daemon22:36:540
125899510,4rtkit-daemon1257-21rtkit-daemon22:23:050
125899510,3rtkit-daemon1257-21rtkit-daemon22:57:320
19292962490,4sleep11929300-21switchtime20:15:261
19969252480,4sleep10-21swapper/122:10:271
125899470,4rtkit-daemon1257-21rtkit-daemon19:53:321
125899460,4rtkit-daemon1257-21rtkit-daemon20:01:451
125899450,4rtkit-daemon1974078-21ssh21:40:220
19942652430,2sleep10-21swapper/122:08:151
190169099422,38cyclictest26-21ksoftirqd/121:15:121
125899380,4rtkit-daemon828-21runrttasks19:33:420
190168799373,4cyclictest13-21ksoftirqd/021:10:020
125899370,4rtkit-daemon2084046-21apt-get00:10:170
125899370,4rtkit-daemon1257-21rtkit-daemon00:19:140
125899370,3rtkit-daemon0-21swapper/019:27:500
125899360,4rtkit-daemon1257-21rtkit-daemon22:17:271
125899360,3rtkit-daemon0-21swapper/123:29:260
125899360,3rtkit-daemon0-21swapper/122:16:050
125899360,3rtkit-daemon0-21swapper/100:22:591
125899360,3rtkit-daemon0-21swapper/020:57:360
190168799354,8cyclictest13-21ksoftirqd/023:50:230
190168799351,7cyclictest1918463-21apt-get19:50:150
190168799350,8cyclictest1948051-21systemd21:05:000
190168799350,8cyclictest13-21ksoftirqd/019:15:010
125899350,4rtkit-daemon1257-21rtkit-daemon23:55:421
125899350,3rtkit-daemon0-21swapper/021:31:110
125899350,3rtkit-daemon0-21swapper/020:50:341
125899350,3rtkit-daemon0-21swapper/019:40:240
190169099340,2cyclictest0-21swapper/122:50:261
190168799342,3cyclictest13-21ksoftirqd/000:30:000
190168799341,7cyclictest2091320-21apt-get00:20:130
190168799341,7cyclictest1984318-21apt-get21:55:130
190168799340,8cyclictest2036773-21apt-get23:05:130
125899340,4rtkit-daemon1257-21rtkit-daemon21:12:220
125899340,3rtkit-daemon1257-21rtkit-daemon20:31:211
125899340,3rtkit-daemon0-21swapper/021:14:141
125899340,3rtkit-daemon0-21swapper/020:47:051
190168799331,8cyclictest2073781-21apt-get23:55:160
190168799331,7cyclictest2018068-21apt-get22:40:140
190168799330,7cyclictest13-21ksoftirqd/020:50:270
125899330,4rtkit-daemon1257-21rtkit-daemon20:21:390
125899330,3rtkit-daemon1257-21rtkit-daemon23:37:191
125899330,3rtkit-daemon1257-21rtkit-daemon22:45:350
125899330,3rtkit-daemon1257-21rtkit-daemon20:49:030
125899330,3rtkit-daemon0-21swapper/023:09:251
125899330,3rtkit-daemon0-21swapper/022:41:431
190169099323,8cyclictest828-21runrttasks23:30:241
1901687993229,2cyclictest63750irq/132-enp2s023:11:570
190168799321,7cyclictest2032880-40apt-check23:00:140
190168799321,4cyclictest13-21ksoftirqd/000:05:010
190168799320,8cyclictest2025488-21apt-get22:50:120
190168799320,7cyclictest1938045-21apt-get20:40:150
125899320,5rtkit-daemon1963928-21runrttasks21:26:391
125899320,3rtkit-daemon0-21swapper/120:30:060
190168799312,8cyclictest13-21ksoftirqd/022:25:160
190168799311,3cyclictest13-21ksoftirqd/020:15:000
190168799310,8cyclictest1995705-21apt-get22:10:140
190168799310,6cyclictest2062421-21apt-get23:40:140
125899310,4rtkit-daemon1257-21rtkit-daemon00:27:421
125899310,3rtkit-daemon0-21swapper/123:37:240
125899310,3rtkit-daemon0-21swapper/120:39:170
125899310,3rtkit-daemon0-21swapper/119:48:560
125899310,3rtkit-daemon0-21swapper/022:56:221
125899310,3rtkit-daemon0-21swapper/022:24:231
125899310,3rtkit-daemon0-21swapper/021:05:251
190168799301,8cyclictest2102698-21apt-get00:35:130
125899300,3rtkit-daemon0-21swapper/121:53:300
125899300,3rtkit-daemon0-21swapper/023:13:591
125899300,3rtkit-daemon0-21swapper/023:02:591
125899300,3rtkit-daemon0-21swapper/021:20:311
125899300,3rtkit-daemon0-21swapper/020:20:501
190169099290,7cyclictest1965621-21kworker/1:221:55:211
190169099290,7cyclictest1937948-21cat20:40:011
190168799296,6cyclictest13-21ksoftirqd/023:48:040
190168799294,7cyclictest13-21ksoftirqd/023:30:140
190168799290,8cyclictest2045357-21grep23:15:260
190168799290,8cyclictest1991721-21ls22:05:160
190168799290,8cyclictest1954134-21apt-get21:15:170
190168799290,7cyclictest2098971-21apt-get00:30:140
125899290,3rtkit-daemon0-21swapper/100:07:440
125899290,3rtkit-daemon0-21swapper/022:35:371
125899290,3rtkit-daemon0-21swapper/021:04:081
125899290,3rtkit-daemon0-21swapper/019:40:031
1901690992824,2cyclictest2089546-21rm00:16:501
190169099280,8cyclictest1904012-21if_enp2s019:15:021
190169099280,8cyclictest1901834-21cpu19:10:181
190169099280,7cyclictest1908198-21latency_hist19:25:001
190168799281,8cyclictest1920413-21apt-get19:55:140
190168799281,8cyclictest13-21ksoftirqd/022:00:170
190168799280,7cyclictest13-21ksoftirqd/022:30:170
125899280,3rtkit-daemon0-21swapper/022:33:421
20820252270,5sleep10-21swapper/100:05:241
1901690992724,2cyclictest17350irq/39-mmc019:35:111
190169099270,8cyclictest251rcuc/123:45:281
190169099270,8cyclictest2048853-21switchtime23:20:251
190168799276,5cyclictest13-21ksoftirqd/021:26:500
190168799272,3cyclictest13-21ksoftirqd/019:35:130
1901690992616,8cyclictest2066121-21cut23:45:021
190169099260,8cyclictest1928043-21perf20:15:001
190169099260,6cyclictest0-21swapper/120:59:261
190169099260,6cyclictest0-21swapper/100:35:201
190168799268,3cyclictest141rcu_preempt20:00:130
190168799267,8cyclictest13-21ksoftirqd/021:37:250
190168799263,7cyclictest13-21ksoftirqd/019:18:000
125899260,3rtkit-daemon0-21swapper/120:28:060
125899260,3rtkit-daemon0-21swapper/019:32:151
125899260,1rtkit-daemon1257-21rtkit-daemon20:18:560
190169099257,6cyclictest2078274-21needreboot00:00:231
1901690992516,7cyclictest1983561-21ssh21:54:011
190169099250,6cyclictest0-21swapper/120:06:281
1901687992511,3cyclictest13-21ksoftirqd/023:20:490
125899250,1rtkit-daemon1257-21rtkit-daemon20:29:381
125899250,1rtkit-daemon1257-21rtkit-daemon19:56:131
125899250,1rtkit-daemon1257-21rtkit-daemon00:12:291
190169099242,7cyclictest251rcuc/121:45:261
190169099240,6cyclictest0-21swapper/121:39:421
190168799240,8cyclictest13-21ksoftirqd/019:20:190
190168799240,6cyclictest1924335-21apt-get20:05:120
190169099239,11cyclictest2070790-21/usr/sbin/munin23:50:201
1901690992317,4cyclictest2047445-21turbostat23:19:591
190169099230,5cyclictest0-21swapper/123:25:111
190169099230,21cyclictest2025245-21perf22:49:591
125899230,14rtkit-daemon0-21swapper/100:32:261
190169099224,13cyclictest1973264-21apt-get21:40:151
190169099222,18cyclictest1938350-21tune2fs20:40:191
190169099213,17cyclictest0-21swapper/122:25:421
1901690992115,4cyclictest26-21ksoftirqd/119:50:011
190169099211,3cyclictest1900062-1kworker/1:3H19:30:021
125899210,3rtkit-daemon0-21swapper/122:03:541
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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