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2026-04-23 - 11:27
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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 Apr 23, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11182462258189,53sleep10-21swapper/119:07:371
11180992246202,28sleep00-21swapper/019:06:010
12987812770,4sleep01298602-21/usr/sbin/munin00:15:140
179699610,7rtkit-daemon1795-21rtkit-daemon21:25:120
179699610,4rtkit-daemon1795-21rtkit-daemon22:43:120
12049252530,12sleep126-21ksoftirqd/122:01:261
179699520,4rtkit-daemon1795-21rtkit-daemon23:09:290
179699520,4rtkit-daemon1795-21rtkit-daemon00:16:161
11580182520,5sleep00-21swapper/020:45:150
179699510,4rtkit-daemon1795-21rtkit-daemon23:01:060
179699510,4rtkit-daemon1795-21rtkit-daemon21:35:380
12964052510,4sleep00-21swapper/000:10:200
12389202510,1chrt1238919-21ssh22:50:201
179699500,4rtkit-daemon1795-21rtkit-daemon22:53:360
12584722500,5sleep00-21swapper/023:18:140
179699490,3rtkit-daemon1795-21rtkit-daemon23:32:180
179699480,3rtkit-daemon1795-21rtkit-daemon20:51:400
179699470,3rtkit-daemon1795-21rtkit-daemon20:33:201
111861599446,12cyclictest1277819-21apt-get23:45:130
179699430,4rtkit-daemon0-21swapper/121:53:421
111861599436,11cyclictest1167777-21diskmemload23:35:240
1118615994311,12cyclictest1276819-21seq23:43:230
111861599419,11cyclictest1167777-21diskmemload21:50:440
111861599416,11cyclictest1167777-21diskmemload00:25:220
111861599415,13cyclictest1132815-21munin-run19:45:000
1118615994113,10cyclictest1202590-21taskset21:59:110
111861599409,10cyclictest1234927-21/usr/sbin/munin22:45:140
111861599409,10cyclictest1234927-21/usr/sbin/munin22:45:140
111861599408,9cyclictest1285019-21cron23:55:000
111861599405,11cyclictest1155213-21apt-get20:40:070
111861599399,7cyclictest1216869-21apt-get22:20:120
111861599394,11cyclictest1253394-21sed23:10:230
111861599393,20cyclictest1302411-21apt-get00:20:130
111861599393,10cyclictest1154531-21sed20:35:240
179699380,3rtkit-daemon0-21swapper/021:47:380
179699370,3rtkit-daemon0-21swapper/023:55:400
179699370,3rtkit-daemon0-21swapper/021:20:570
179699370,3rtkit-daemon0-21swapper/000:39:410
111861599377,13cyclictest1290970-21seq00:01:350
111861599377,10cyclictest1167777-21diskmemload22:03:040
111861599376,8cyclictest1224246-21apt-get22:30:120
111861599375,20cyclictest1147714-21cat20:20:180
111861599374,19cyclictest1206677-21apt-get22:05:120
111861599374,11cyclictest1132796-21apt-get19:45:280
111861599373,20cyclictest1171733-21apt-get21:15:140
111861599372,20cyclictest1292958-21apt-get00:05:130
179699360,3rtkit-daemon0-21swapper/122:14:551
179699360,3rtkit-daemon0-21swapper/121:59:171
111861599369,10cyclictest1212012-21sh22:11:440
111861599368,10cyclictest1164051-21seq21:00:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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