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2026-04-23 - 11:26
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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 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
111861599365,12cyclictest1167777-21diskmemload22:35:210
179699350,4rtkit-daemon1795-21rtkit-daemon22:25:181
179699350,3rtkit-daemon0-21swapper/122:20:521
179699350,3rtkit-daemon0-21swapper/020:10:361
111861599359,9cyclictest1183074-21ssh21:30:200
111861599357,9cyclictest1167777-21diskmemload22:25:070
111861599356,12cyclictest1167777-21diskmemload22:17:250
111861599356,11cyclictest1311765-21seq00:31:330
111861599356,11cyclictest1311765-21seq00:31:330
111861599355,14cyclictest1162834-21sed20:55:260
111861599355,10cyclictest1260667-21sed23:20:240
111861599354,13cyclictest1192494-21ssh21:44:590
111861599354,11cyclictest1144444-21sed20:10:250
1118615993511,8cyclictest1243219-21seq22:56:090
179699340,3rtkit-daemon0-21swapper/122:15:581
179699340,3rtkit-daemon0-21swapper/023:25:230
179699340,3rtkit-daemon0-21swapper/020:18:211
111861599347,11cyclictest1127113-21seq19:30:070
111861599344,14cyclictest1166529-21cat21:05:170
111861599344,13cyclictest1119844-21sed19:10:220
111861599344,12cyclictest1139855-21basename20:00:180
111861599344,11cyclictest1152680-21sed20:30:230
111861599344,11cyclictest1142374-21sed20:05:240
111861599344,10cyclictest1124274-21sed19:20:220
179699330,5rtkit-daemon1272881-21seq23:37:291
111861599334,10cyclictest1120664-21munin-node19:15:020
111861599333,11cyclictest1147110-21latency_hist20:20:000
179699320,4rtkit-daemon1795-21rtkit-daemon19:26:221
179699320,3rtkit-daemon0-21swapper/100:31:131
179699320,3rtkit-daemon0-21swapper/100:31:121
179699320,3rtkit-daemon0-21swapper/021:37:191
179699320,3rtkit-daemon0-21swapper/020:22:421
179699320,3rtkit-daemon0-21swapper/000:01:451
111861599327,9cyclictest1135451-21/usr/sbin/munin19:50:190
111861599324,12cyclictest1150217-21cat20:25:220
111861599323,12cyclictest1138528-21sed19:55:250
111861599323,12cyclictest1129612-21seq19:35:190
179699310,4rtkit-daemon1259089-21ssh23:19:461
179699310,4rtkit-daemon0-21swapper/023:00:531
179699310,3rtkit-daemon1795-21rtkit-daemon19:59:441
179699310,3rtkit-daemon0-21swapper/021:40:151
179699310,3rtkit-daemon0-21swapper/021:20:321
179699310,3rtkit-daemon0-21swapper/020:05:271
179699310,3rtkit-daemon0-21swapper/020:04:511
1118618993115,4cyclictest1163975-21store21:00:071
111861599314,10cyclictest1170940-21ssh21:13:520
111861599313,18cyclictest0-21swapper/019:27:320
179699300,4rtkit-daemon0-21swapper/020:53:281
179699300,3rtkit-daemon0-21swapper/023:45:581
179699300,3rtkit-daemon0-21swapper/023:44:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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