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2026-05-21 - 09:42
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Thu May 21, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10513172318276,28sleep00-21swapper/019:08:410
10511302273232,27sleep10-21swapper/119:06:401
118935721670,2sleep10-21swapper/123:09:131
12335472740,1chrt1233544-21sh00:08:400
12335472740,1chrt1233544-21sh00:08:400
11748912710,3sleep1251rcuc/122:49:481
179699670,4rtkit-daemon1795-21rtkit-daemon00:11:231
11546802600,3sleep1251rcuc/122:20:291
105158999579,6cyclictest0-21swapper/121:42:231
105158999579,6cyclictest0-21swapper/121:42:221
105158999573,6cyclictest1178933-21apt-get22:55:131
105158999572,7cyclictest1108279-21apt-get21:20:141
105158999572,5cyclictest1076559-21apt-get20:10:121
105158999568,6cyclictest1189943-21apt-get23:10:131
105158999563,10cyclictest1078507-21apt-get20:15:131
105158999560,5cyclictest1218797-21ssh23:48:331
105158999552,6cyclictest1134703-21apt-get21:55:111
105158999552,12cyclictest1083197-21ntp_states20:25:201
105158999551,6cyclictest1228316-21ntp_states00:00:211
179699540,3rtkit-daemon0-21swapper/019:36:501
105158999547,8cyclictest0-21swapper/100:19:511
105158999542,7cyclictest1058154-21apt-get19:25:131
105158999542,6cyclictest1220007-21diskstats23:50:151
105158999522,7cyclictest1149420-21apt-get22:15:101
1051589995211,4cyclictest1099825-21diskmemload22:36:241
11453832510,2sleep00-21swapper/022:09:420
10920222510,4sleep10-21swapper/120:50:011
105158999502,5cyclictest1223555-21apt-get23:55:141
105158999491,8cyclictest1099825-21diskmemload21:46:511
105158999471,6cyclictest1099825-21diskmemload00:30:361
10959412460,3sleep00-21swapper/021:00:000
105158799452,6cyclictest13-21ksoftirqd/000:00:000
179699440,3rtkit-daemon1795-21rtkit-daemon23:19:580
105158999444,9cyclictest1182557-21apt-get23:00:131
105158999442,6cyclictest1051701-21apt-get19:10:081
105158999438,7cyclictest1141526-21sshd22:04:091
105158999430,9cyclictest1206985-21ssh23:32:511
105158799436,9cyclictest13-21ksoftirqd/020:20:010
179699420,29rtkit-daemon1051579-21cyclictest22:58:390
105158999420,7cyclictest1200909-21ssh23:25:041
105158799421,8cyclictest13-21ksoftirqd/021:20:010
11699272410,2sleep10-21swapper/122:41:571
105158999412,6cyclictest1103983-21apt-get21:15:131
105158999412,5cyclictest0-21swapper/122:07:441
105158999412,37cyclictest1072031-21munin-run20:00:001
1051589994115,4cyclictest1215438-21mktemp23:45:011
105158799416,8cyclictest13-21ksoftirqd/019:35:120
105158999401,7cyclictest1099825-21diskmemload21:31:521
105158999400,4cyclictest1233255-21ssh00:07:431
105158999400,4cyclictest1233255-21ssh00:07:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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