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2026-04-01 - 09:22
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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 Wed Apr 01, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5078072272186,29sleep00-21swapper/019:07:280
5077672266188,28sleep10-21swapper/119:07:021
6071172840,1chrt606853-21/usr/sbin/munin22:20:160
6904522770,7chrt0-21swapper/000:20:190
6735332650,4sleep00-21swapper/023:53:340
50817899642,40cyclictest699301-40unattended-upgr00:30:400
179699620,3rtkit-daemon1795-21rtkit-daemon22:10:251
50817899612,39cyclictest547668-21apt-get20:45:110
50817899603,36cyclictest631494-21apt-get22:55:140
50817899602,37cyclictest561294-21apt-get21:15:110
50817899593,36cyclictest579050-21apt-get21:40:110
50817899592,37cyclictest683331-21apt-get00:10:080
50817899583,35cyclictest635474-21apt-get23:00:150
508180995715,15cyclictest610912-21apt-get22:25:241
50817899572,37cyclictest549617-21apt-get20:50:120
50817899572,36cyclictest638914-21apt-get23:05:120
50817899562,27cyclictest537269-21apt-get20:20:060
179699550,4rtkit-daemon1795-21rtkit-daemon21:58:540
50817899540,1cyclictest557288-21diskmemload22:03:590
50817899522,25cyclictest628067-21apt-get22:50:130
508178995214,20cyclictest556387-21proc_pri21:05:200
179699520,4rtkit-daemon1795-21rtkit-daemon22:19:321
179699520,4rtkit-daemon1795-21rtkit-daemon19:10:241
179699520,3rtkit-daemon1795-21rtkit-daemon22:41:220
50817899511,34cyclictest512639-21python319:20:030
50817899510,3cyclictest557288-21diskmemload00:04:430
508180995016,9cyclictest689771-21apt-get00:20:131
50817899502,33cyclictest557288-21diskmemload21:20:460
50817899502,33cyclictest557288-21diskmemload00:09:360
50817899502,25cyclictest693364-21apt-get00:25:150
50817899502,24cyclictest529262-21apt-get20:00:110
179699500,4rtkit-daemon1795-21rtkit-daemon19:50:051
508180994915,10cyclictest664157-21/usr/sbin/munin23:40:191
50817899492,24cyclictest519068-21apt-get19:35:140
508178994914,19cyclictest540639-21open_files20:25:230
50817899491,25cyclictest701066-21apt-get00:35:100
50817899491,25cyclictest649739-21apt-get23:20:140
50817899490,3cyclictest605237-21sh22:16:430
508180994816,13cyclictest633878-21ssh22:57:561
508180994813,24cyclictest606824-21taskset22:20:081
508180994813,13cyclictest698016-21apt-get00:30:321
50817899489,22cyclictest626853-21sh22:47:290
50817899481,27cyclictest557288-21diskmemload23:25:520
50817899481,27cyclictest557288-21diskmemload22:08:560
50817899481,24cyclictest656251-21apt-get23:30:070
50817899480,2cyclictest510834-21apt-get19:15:100
50817899480,25cyclictest610142-21apt-get22:25:300
508180994714,12cyclictest571635-21ssh21:29:581
508180994713,12cyclictest512580-21apt-get19:20:071
508180994713,11cyclictest594024-21grep22:00:231
508180994711,9cyclictest686188-21unin-run00:15:011
508180994711,20cyclictest557555-21apt-get21:10:131
508180994711,12cyclictest642699-21apt-get23:10:121
508180994711,11cyclictest686389-21apt-get00:15:141
508180994710,10cyclictest621045-21sed22:40:011
50817899477,20cyclictest557288-21diskmemload00:16:260
50817899471,25cyclictest522986-21apt-get19:45:110
508180994615,14cyclictest564607-21ssh21:19:491
508180994615,13cyclictest581576-21ssh21:43:311
508180994615,13cyclictest536286-21sh20:15:211
508180994615,11cyclictest557288-21diskmemload23:06:421
508180994614,12cyclictest672727-21ssh23:51:381
508180994613,13cyclictest674377-21apt-get23:55:131
508180994613,11cyclictest584328-21chrt21:46:351
50817899467,21cyclictest0-21swapper/023:49:450
50817899461,29cyclictest571421-21ssh21:29:270
50817899461,26cyclictest557288-21diskmemload23:36:420
50817899461,24cyclictest517116-21apt-get19:30:140
50817899460,2cyclictest558542-21ps21:10:230
179699460,4rtkit-daemon1795-21rtkit-daemon20:14:270
508180994515,11cyclictest557288-21diskmemload21:21:571
508180994514,8cyclictest763-21dbus-daemon20:50:011
508180994514,10cyclictest592650-21ssh21:59:581
508180994513,10cyclictest557288-21diskmemload23:36:001
508180994513,10cyclictest1-21systemd19:50:011
508180994512,11cyclictest586075-21apt-get21:50:151
508180994511,11cyclictest596475-21apt-get22:05:151
50817899456,20cyclictest557288-21diskmemload21:46:040
50817899451,24cyclictest557288-21diskmemload21:50:330
179699450,4rtkit-daemon0-21swapper/121:06:591
179699450,3rtkit-daemon0-21swapper/120:00:331
50818099449,19cyclictest575306-21latency_hist21:35:011
508180994414,11cyclictest681317-21taskset00:05:361
508180994413,15cyclictest636978-21chrt23:00:491
508180994413,11cyclictest557288-21diskmemload22:53:461
508180994411,12cyclictest656620-21gpg-connect-age23:30:021
50817899441,26cyclictest572269-21perl21:30:160
50817899441,23cyclictest617659-21apt-get22:35:120
50817899441,23cyclictest575789-21df_inode21:35:150
50817899441,22cyclictest614342-21apt-get22:30:110
50817899440,8cyclictest644396-21ssh23:11:160
50817899440,7cyclictest675775-21ssh23:55:340
50817899440,24cyclictest646192-21apt-get23:15:130
50817899440,1cyclictest0-21swapper/023:40:030
508180994315,9cyclictest557288-21diskmemload22:40:591
508180994314,13cyclictest680673-21rm00:04:271
508180994313,11cyclictest5513302sleep120:54:481
508180994313,11cyclictest535276-21runrttasks20:14:421
508180994313,10cyclictest651737-21taskset23:22:021
508180994312,10cyclictest557288-21diskmemload22:31:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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