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2026-03-29 - 18:00
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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 Sun Mar 29, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7150222273193,28sleep10-21swapper/107:08:431
7133932255213,28sleep00-21swapper/007:05:100
179699720,3rtkit-daemon0-21swapper/109:50:251
8823502620,5sleep10-21swapper/111:55:191
8714312600,6sleep00-21swapper/011:40:160
179699600,5rtkit-daemon0-21swapper/108:24:540
179699590,3rtkit-daemon0-21swapper/110:34:250
715292995513,10cyclictest734053-21python307:55:011
715292995412,11cyclictest913594-21cat12:40:011
179699540,3rtkit-daemon1795-21rtkit-daemon10:34:111
715292995312,10cyclictest724129-21apt-config07:30:011
715292995311,10cyclictest857152-21wc11:20:011
715292995310,17cyclictest717222-21grep07:15:001
715292995310,11cyclictest771976-21sed09:20:011
715292995224,20cyclictest775488-21apt-get09:25:121
715292995213,10cyclictest723638-21python307:30:011
715292995211,12cyclictest775316-21latency_hist09:25:011
715292995210,12cyclictest822248-21latency_hist10:30:011
179699520,4rtkit-daemon1795-21rtkit-daemon07:57:321
715292995112,12cyclictest790093-21date09:45:011
715292995111,12cyclictest896760-21mailstats12:15:221
715292995110,10cyclictest899066-21python312:20:011
715292995015,11cyclictest812108-21sh10:15:201
715292995011,13cyclictest729187-21grep07:40:221
715292995011,10cyclictest850067-21date11:10:011
715292995010,11cyclictest857948-21grep11:20:191
715292995010,10cyclictest818725-21munin-run10:25:001
715292994913,14cyclictest780373-21sed09:30:251
715292994913,10cyclictest748362-21perf08:29:591
715292994912,9cyclictest853627-21sh11:14:591
715292994912,14cyclictest844377-21grep11:00:241
715292994912,13cyclictest755881-21grep08:45:231
715292994911,11cyclictest892056-21latency_hist12:10:011
715292994910,11cyclictest764415-21latency_hist09:10:011
715292994814,16cyclictest750335-21python308:35:001
715292994813,9cyclictest1-21systemd12:05:001
715292994813,12cyclictest870685-21runrttasks11:39:161
715292994811,11cyclictest843235-21cat11:00:001
715292994811,10cyclictest1-21systemd10:40:241
715292994810,26cyclictest892109-1kworker/1:0H12:15:011
715292994810,12cyclictest719755-21cat07:20:011
715292994718,7cyclictest785996-21python309:40:001
715292994714,8cyclictest825773-21taskset10:35:131
715292994713,11cyclictest793780-21cat09:50:011
715292994713,10cyclictest744484-21dpkg08:20:021
715292994712,9cyclictest807805-21latency_hist10:09:591
715292994712,21cyclictest728094-21sed07:40:001
715292994712,11cyclictest808265-21perl10:10:181
715292994712,11cyclictest764917-21df_inode09:10:161
715292994711,13cyclictest801615-21grep10:00:211
715292994711,12cyclictest904276-21grep12:25:251
715292994711,11cyclictest867676-21cat11:35:011
715292994614,10cyclictest835384-21ssh10:48:291
715292994613,12cyclictest761453-21ntpq09:00:211
715292994612,13cyclictest906829-21fschecks_count12:30:171
715292994612,11cyclictest720654-21ntpq07:20:201
715292994611,13cyclictest879162-21ntpq11:50:221
715292994611,13cyclictest837320-21sed10:50:241
715292994611,11cyclictest759782-21grep08:55:231
715292994515,13cyclictest872704-21taskset11:40:401
715292994514,10cyclictest764404-21diskmemload11:45:151
715292994512,13cyclictest742512-21grep08:15:171
715292994511,22cyclictest756772-21/usr/sbin/munin08:50:211
715292994511,14cyclictest740578-21grep08:10:161
715292994511,10cyclictest739625-21awk08:05:261
715292994510,11cyclictest751877-21mailstats08:35:251
179699450,3rtkit-daemon0-21swapper/111:00:140
179699450,11rtkit-daemon801537-21ntp_states10:00:200
715292994412,10cyclictest861862-21find11:25:241
715292994411,11cyclictest731292-21grep07:45:251
715292994411,10cyclictest798536-21grep09:55:231
715292994411,10cyclictest737122-21strings08:00:201
179699440,3rtkit-daemon1795-21rtkit-daemon12:21:070
715292994311,14cyclictest754394-21sshd08:42:351
179699420,3rtkit-daemon0-21swapper/111:48:020
179699410,4rtkit-daemon1795-21rtkit-daemon11:58:470
179699380,3rtkit-daemon0-21swapper/011:14:500
179699380,3rtkit-daemon0-21swapper/009:07:460
179699360,3rtkit-daemon0-21swapper/010:26:250
179699350,3rtkit-daemon0-21swapper/111:36:190
179699330,4rtkit-daemon832846-21apt-get10:45:120
179699330,4rtkit-daemon1795-21rtkit-daemon09:19:570
179699330,4rtkit-daemon1795-21rtkit-daemon07:10:200
179699330,3rtkit-daemon0-21swapper/111:51:010
179699330,3rtkit-daemon0-21swapper/110:41:190
179699330,3rtkit-daemon0-21swapper/109:42:020
179699320,5rtkit-daemon0-21swapper/108:45:500
179699320,3rtkit-daemon0-21swapper/110:13:090
179699320,3rtkit-daemon0-21swapper/108:10:410
179699320,3rtkit-daemon0-21swapper/107:26:580
179699310,4rtkit-daemon1795-21rtkit-daemon12:36:080
179699310,4rtkit-daemon1795-21rtkit-daemon09:02:480
179699310,3rtkit-daemon0-21swapper/111:28:050
179699310,3rtkit-daemon0-21swapper/108:50:380
715291993012,11cyclictest750920-21apt-get08:35:150
179699300,4rtkit-daemon1795-21rtkit-daemon09:26:250
179699300,3rtkit-daemon0-21swapper/109:48:320
179699300,3rtkit-daemon0-21swapper/109:39:430
179699300,3rtkit-daemon0-21swapper/108:15:480
179699290,5rtkit-daemon807368-21diskmemload10:09:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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