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2025-12-02 - 22:58
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Tue Dec 02, 2025 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9387092258183,59sleep10-21swapper/107:08:481
9386602257214,28sleep00-21swapper/007:08:180
125899770,4rtkit-daemon1257-21rtkit-daemon11:32:501
125899760,4rtkit-daemon1257-21rtkit-daemon10:27:141
93899399623,8cyclictest1105879-40unattended-upgr11:45:321
93899399623,8cyclictest1059884-21apt-get10:45:151
93899399623,11cyclictest1006923-21apt-get09:35:141
93899399613,8cyclictest987188-21apt-get09:10:161
93899399602,9cyclictest1063690-21apt-get10:50:121
10896492580,4sleep11089282-21python311:25:021
938993995614,25cyclictest1022690-21apt-get09:55:141
93899399552,6cyclictest1030118-21apt-get10:05:141
93899399551,6cyclictest1014494-21apt-get09:45:131
93899399548,3cyclictest986904-21diskmemload09:18:031
93899399528,5cyclictest0-21swapper/112:23:441
93899399522,6cyclictest1010832-21apt-get09:40:141
93899399522,5cyclictest1082119-21apt-get11:15:141
125899520,4rtkit-daemon1257-21rtkit-daemon11:35:220
125899520,4rtkit-daemon1257-21rtkit-daemon11:21:540
10008102520,3sleep10-21swapper/109:25:351
9968462510,5sleep00-21swapper/009:20:240
93899399519,5cyclictest982839-21seq08:58:471
93899399517,4cyclictest986904-21diskmemload11:36:571
93899399501,9cyclictest959706-21apt-get08:00:101
93899399501,10cyclictest952092-21df_inode07:40:151
125899500,4rtkit-daemon1257-21rtkit-daemon09:51:550
125899500,4rtkit-daemon1257-21rtkit-daemon08:21:270
125899500,3rtkit-daemon1257-21rtkit-daemon08:19:260
93899399492,5cyclictest1078438-21apt-get11:10:161
93899399491,10cyclictest1109936-21diskstats11:50:171
93899399490,9cyclictest1002946-21ssh09:30:051
93899399482,7cyclictest1071879-21ntp_states11:00:241
93899399481,7cyclictest986904-21diskmemload10:30:141
93899399481,6cyclictest983194-21apt-get09:00:131
93899399480,16cyclictest1029761-21ssh10:04:511
125899480,4rtkit-daemon1257-21rtkit-daemon07:24:000
93899399472,7cyclictest1136087-21memory12:25:201
93899399471,10cyclictest941640-21ntp_states07:15:051
93899399470,5cyclictest1019134-21ntp_states09:50:211
93899399470,16cyclictest1055235-21ssh10:38:231
125899470,3rtkit-daemon1257-21rtkit-daemon08:26:220
93899399461,7cyclictest1128326-21apt-get12:15:121
93899399461,10cyclictest1057530-21users10:40:271
93899399451,7cyclictest986904-21diskmemload11:24:331
93899399451,6cyclictest986904-21diskmemload11:42:131
93899399451,6cyclictest986904-21diskmemload10:24:291
93899399451,6cyclictest986904-21diskmemload10:19:451
93899399441,7cyclictest986904-21diskmemload11:09:251
93899399431,7cyclictest986904-21diskmemload12:02:171
93899399422,34cyclictest1033945-21apt-get10:10:151
93899399421,6cyclictest986904-21diskmemload12:39:021
93899399411,5cyclictest986904-21diskmemload12:08:001
93899399392,7cyclictest985143-21apt-get09:05:131
93899399392,7cyclictest985143-21apt-get09:05:131
938993993912,2cyclictest1069701-21sh10:57:351
125899390,4rtkit-daemon1257-21rtkit-daemon11:28:320
125899390,4rtkit-daemon0-21swapper/107:10:471
125899390,3rtkit-daemon0-21swapper/010:33:010
93899399382,7cyclictest995650-21apt-get09:20:131
125899380,5rtkit-daemon991630-40apt-check09:15:110
125899380,3rtkit-daemon0-21swapper/007:26:391
93899399378,6cyclictest975995-21cat08:40:211
93899399372,8cyclictest947902-21apt-get07:30:171
93899399372,7cyclictest1124671-21apt-get12:10:151
93899399371,8cyclictest1115039-21ssh11:55:581
93899399370,35cyclictest0-21swapper/107:55:001
938991993716,7cyclictest13-21ksoftirqd/010:15:120
125899370,5rtkit-daemon1257-21rtkit-daemon10:29:570
125899370,3rtkit-daemon0-21swapper/108:03:050
93899399367,5cyclictest970261-21ntpq08:25:231
125899360,4rtkit-daemon1257-21rtkit-daemon09:30:010
93899399357,7cyclictest966156-21memory08:15:181
93899399351,10cyclictest1138916-21ssh12:30:041
125899350,4rtkit-daemon1257-21rtkit-daemon07:16:250
125899350,4rtkit-daemon0-21swapper/109:06:220
125899350,4rtkit-daemon0-21swapper/109:06:220
125899350,3rtkit-daemon0-21swapper/108:41:130
125899350,3rtkit-daemon0-21swapper/107:40:500
93899399348,3cyclictest0-21swapper/107:20:181
938993993410,4cyclictest951285-31updatedb.mlocat07:36:191
938991993411,5cyclictest13-21ksoftirqd/009:00:010
125899340,5rtkit-daemon986904-21diskmemload10:59:290
125899340,4rtkit-daemon1257-21rtkit-daemon10:20:180
125899340,4rtkit-daemon1257-21rtkit-daemon07:26:040
125899340,3rtkit-daemon0-21swapper/112:01:040
125899340,3rtkit-daemon0-21swapper/110:53:240
93899199330,8cyclictest1056179-21apt-get10:40:140
125899330,4rtkit-daemon1257-21rtkit-daemon10:00:200
125899330,4rtkit-daemon1257-21rtkit-daemon07:57:400
125899330,3rtkit-daemon0-21swapper/111:16:110
93899399320,13cyclictest963413-21turbostat08:10:001
93899399311,6cyclictest979483-21diskstats08:50:171
93899399310,10cyclictest958511-21ntp_states07:55:271
938991993113,3cyclictest13-21ksoftirqd/008:33:010
93899199310,8cyclictest1104984-21ssh11:44:550
93899199310,8cyclictest1003010-21apt-get09:30:130
125899310,4rtkit-daemon1257-21rtkit-daemon11:31:360
125899310,4rtkit-daemon1138998-21ssh12:30:120
125899310,4rtkit-daemon0-21swapper/112:38:520
938991993013,3cyclictest13-21ksoftirqd/010:13:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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